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110results about How to "Improve operation management level" patented technology

Real-time data collecting and fault positioning system of power distribution network and working method thereof

The invention provides a real-time data collecting and fault positioning system of a power distribution network and a working method thereof. The real-time data collecting and fault positioning system comprises transformer substation voltage collecting units, a plurality of line units, a real-time data server, a background monitoring computer and a handheld terminal, wherein each transformer substation is provided with one transformer substation voltage collecting unit; each transformer substation voltage collecting unit comprises one intelligent voltage detection terminal; each line unit comprises three fault positioning and data collecting sensors and one communication and calculation terminal; the intelligent voltage detection terminal, the communication and calculation terminal and the handheld terminal are in wireless communication with the real-time data server; the three fault positioning and data collecting sensors of the same line unit are in short-distance wireless communication with the communication and calculation terminal. The working method mainly comprises the step of carrying out real-time data collection and fault judgment. The information precision of power transmission line data which is collected in real time is high, short circuit and grounding faults are rapidly and accurately judged, the time of powering off and overhauling is shortened, the quantity of fault line patrolling workers is reduced and manpower and material resources are saved.
Owner:CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +2

Real-time traffic condition judging method based on time window

The invention discloses a real-time traffic condition judging method based on a time window. The method comprises the following steps of: performing data preprocessing; performing traffic state clustering initialization through a two-step clustering algorithm; updating the time window to obtain the traffic flow base data of a current time interval; and updating two-step clustering algorithm parameters and a clustering center, and judging the real-time traffic state of the current time interval. According to the invention, based on historical traffic flow base data, the traffic state clustering initialization is performed by a two-step clustering algorithm, and the optimal classification of the traffic state is obtained through primary selection of the optimal cluster number and determination of the optimal cluster number respectively; then, based on the initialization result, the real-time data is introduced, and the data is updated dynamically by use of a storage structure of the time window; and finally, the two-step clustering algorithm parameters and the clustering center are calculated and updated in real time, the optimal classification of the traffic state is re-determined, and the real-time traffic state of the current time interval is judged. The method makes up for the limitation of the conventional traffic state judging algorithm, and is of positive significance to promoting the construction of the urban intelligent transport system.
Owner:SOUTHEAST UNIV

Power supply system key information acquisition system and communication method based on Beidou satellite transmission and communication method thereof

The invention relates to a power supply system key information acquisition system and communication method based on Beidou satellite transmission, belonging to the field of remote monitoring of a power supply system. The system consists of a main station side system and a factory station side system, wherein the main station side system comprises a main station side data server and a Beidou satellite command airplane, and the Beidou satellite command airplane is connected with the main station side data server; the factory station side system consists of a three-phase acquisition circuit, a multi-path analogue-to-digital conversion integrated circuit, an intelligent electric energy meter, a Beidou satellite subscriber machine, a processor, a display and a data storage device, and the three-phase acquisition circuit is connected with the multi-path analogue-to-digital conversion integrated circuit; the multi-path analogue-to-digital conversion integrated circuit is connected with the processor; and the processor is respectively connected with the intelligent electric energy meter, the Beidou satellite subscriber machine, the data storage device and the display. The system has the advantages of reinforcing the accuracy, the timeliness and the safety of key data transmission, monitoring a distributive mini-type hydropower station in real time, improving the running management level of the mini-type hydropower station and optimizing the power flow distribution of a power grid so as to reduce the loss of the power grid and exert the effects of energy saving and emission reduction.
Owner:LEADZONE SMART GRID TECH

Intelligent substation warning and aid decision making system

The invention discloses an intelligent substation warning and aid decision making system for processing potential safety hazards or faults in a substation according to the expert knowledge base technology. The intelligent substation warning and aid decision making system comprises a center control computer and an intelligent substation monitoring system, and the center control computer is further provided with an expert knowledge base module, an expert knowledge explaining module, a warning and decision inference machine module and a system data warehouse module. By means of the system, the essence of faults is found out from the aspect of ways of thinking of experts, and expert knowledge is used for forming solving plans for assisting fault processing personnel in dealing with the faults. Through warning message layered optimization, comprehensive induction, fault inference model establishing and accident inversion, the intelligent substation warning and aid decision making system can be effectively used for guiding and helping operating personnel to make correct judgment about accidents or abnormities quickly; meanwhile, all kinds of data and operation states of the substation are analyzed and processed in real time so that potential safety hazards of the system can be found, corresponding warning messages can be generated automatically, and the operation management level and power supply reliability of the substation are improved.
Owner:长园深瑞继保自动化有限公司

Automation device for use in civil aircraft environment control system function test

The invention relates to an automation device for use in a civil aircraft environment control system function test, which belongs to the technical field of aircraft manufacturing. The automation device comprises an air source processing component, an electric air heating furnace, an air heating furnace controller, a main pipeline system, a pneumatic valve control component, a metal hose component, a wireless sensing communication module, a programmable logic controller (PLC) control module and an upper machine monitoring computer. In the invention, an aircraft pressure cabin and air conditioner pipeline leakage amount test, a cabin pressure regulating system test, a cabin air temperature regulating system function test and an anti-ice system function test are carried out by using an on-spot air source of an aircraft assembly plant in place of an engine or an auxiliary power unit (APU) unit, so that a plurality of test items in the aircraft environment control function test can be completed, and the requirements of aircraft mass production on the quality and efficiency improvement on the environment control function test in a final assembly process are met.
Owner:SHANGHAI JIAO TONG UNIV +1

Fire coal blending method of thermal power plants

InactiveCN102592249AGuaranteed safe burningReduce the price per unit of energy consumptionData processing applicationsInformation repositoryCombustion
The invention discloses a fire coal blending method of thermal power plants, which belongs to the technical field of thermal power generation and automation and includes: building a coal yard inventory three-dimensional information model database according to coal yard inventory information; building a boiler combustion standard information base according to requirements of each boiler on coal quality and boiler self influence factors; generating a constraint condition according to the boiler combustion standard information base and the coal yard inventory three-dimensional information model database, and building a fire coal economical objective function to obtain a fire coal blending model; and calculating all fire coal blending proportion schemes when the boilers consume standard coal with a set quantity according to the fire coal blending model, and selecting a scheme with topmost layer coal as the optimum scheme. The fire coal blending method is most economical, reduces unit energy consumption price and improves economic benefit of power generation enterprises under the premise of ensuring boiler safe combustion.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Online boiler monitoring and management system

The invention discloses an online boiler monitoring and management system. Operational parameters of a boiler are acquired by an online boiler monitoring device. Acquired data are transmitted to an online boiler monitoring server through a network communication system by internet. The online boiler monitoring server stores and comprehensively processes the data and allows for man-machine interaction by means of image-text reports, audible and visual alarm, short-text emails and the like. Based on data acquisition, data processing and report file generation by a management platform system, boiler operation management level is increased, safe, energy-saving and environment-friendly operation of the boiler is achieved, and dynamic sharing of the data in multi-level departments is achieved.
Owner:MIURA IND SUZHOU

Energy efficiency analysis method of generator set

ActiveCN105224735ASolve the problem of the calculation method of the influence of heat consumptionConvenient researchSpecial data processing applicationsSimulationAnalysis method
The invention provides an energy efficiency analysis method of a generator set. The method comprises: acquiring generator set parameters, set performance target value and actual values; calculating external condition deviations according to boiler actual coal consumption, current environment temperature, turboset circulating water temperature, turboset heat-supply power generation ratio and turboset power generation capacity of the generator set parameters; respectively calculating a boiler efficiency deviation, a turboset efficiency deviation and a station service power consumption rate deviation through a boiler performance test, a turboset performance test and station service power consumption rate testing performance test under multiple working conditions, and calculating a device performance deviation according to the boiler efficiency deviation, the turboset efficiency deviation and the station service power consumption rate deviation; calculating expected values of set actual operation according to generator set design parameters, the external condition deviations and the device performance deviation; and respectively calculating difference values between the expected values and the target values and difference values between the expected values and the actual values, and calculating generator set energy efficiency according to preset weights and corresponding membership functions of the two types of difference values.
Owner:NORTH CHINA ELECTRICAL POWER RES INST +1

Treatment method for slaughter wastewater

The invention discloses a treatment method for slaughter wastewater. The treatment method includes the steps of pretreatment, biochemical treatment, precipitation separation, oxidative decolorization, activated carbon adsorption, disinfection treatment and sludge concentration. Through adopting the advanced, practical, mature and reliable treatment technology, the inflow requirements for water large in water quality fluctuation and amount are met, and it is ensured that the treated wastewater can not be discharged until reaching standards. By the adoption of the reasonable technology and reasonable arrangement, the construction cost is lowered as far as possible, and on the premise of guaranteeing safe, economical and stable operation of a system, the good treatment effect is achieved with the minimum investment. Based on the rule of the advanced and mature technology and reliable quality, the relation between manual operation and automatic control is reasonably handled, an automation technology is adopted for the step where manual operation is inconvenient, and the labor cost is high, and therefore the operation management level of the system is increased.
Owner:济南兄弟环保科技有限公司

Analysis method for objective factor affecting generator set energy efficiency

ActiveCN105303032ASolve the problem of the calculation method of the influence of heat consumptionConvenient researchSpecial data processing applicationsCurrent loadAnalysis method
An analysis method for objective factor affecting generator set energy efficiency comprises the following steps of acquiring generator set parameters including generator set design parameters, boiler practical coal combustion amount, current environment temperature, turboset circulating water temperature, load rate, turboset heat supplying and generating ratio and turboset generation amount, calculating external condition deviation according to the boiler practical coal combustion amount, current environment temperature, turboset circulating water temperature, load rate, turboset heat supplying and generating ratio and turboset generation amount, calculating boiler efficiency deviation, turboset efficiency deviation and station service power consumption rate deviation according to a boiler performance test, a turboset performance test and a station service power consumption rate test under multi-work conditions, calculating net coal consumption rate deviation of the multi-work conditions according to the boiler efficiency deviation, turboset efficiency deviation and station service power consumption rate deviation, generating equipment performance curve according to multi-load points and net coal consumption rate deviation, and calculating objective factors of the current load according to external condition deviation and the equipment performance curve.
Owner:NORTH CHINA ELECTRICAL POWER RES INST +1

Method for calculating output loss of wind power field and unit

InactiveCN101667226AThe mapping relationship fully reflectsMapping relationship reflectsSpecial data processing applicationsElectricityTime segment
The invention provides a method for calculating the output loss of a wind power field and a unit and a device thereof, relating to the technical field of wind power generation. The lost generated energy of a failed wind turbine unit within the fault time segment is obtained through referring the generated energy of a plurality of wind turbine units which work normally around the failed wind turbine unit within the fault time segment or utilizing an expert system. The invention has the advantages of calculating accurately the output loss caused by the abnormal work of the wind power field and the wind turbine units due to various causes so as to be beneficial to improving the running management level of the wind power field, providing accurate calculation basis for all application requiringoutput power loss data of wind power plants and providing accurate basis for performance evaluation of employees of the wind power plants, calculation of carbon emission reduction, economic benefit analysis of the wind power plants as well as solution of economic disputes caused by the abnormal working of the wind power plants and the wind turbine units due to various causes.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Acquisition system of cathode protection data of buried pipeline

ActiveCN104928686AGuaranteed timelinessSatisfied with ease of operation and ease of useManagement levelPower flow
The invention discloses an acquisition system of cathode protection data of a buried pipeline. The acquisition system comprises one or more data acquiring and storing devices, and a data analyzing and early-warning device, wherein the data acquiring and storing devices are in communication connection with the data analyzing and early-warning device through a network; the data acquiring and storing devices acquire the cathode protection data of the buried pipeline; after the acquired cathode protection data of the buried pipeline is processed and stored, the data acquiring and storing devices transmit the cathode protection data of the buried pipeline to the data analyzing and early-warning device; the data analyzing and early-warning device receives the cathode protection data of the buried pipeline, which is transmitted by the data acquiring and storing devices, and performs early-warning analysis; early warning is performed according to the result of the early-warning analysis. The acquisition system disclosed by the invention realizes acquisition and monitoring, and centralized supervision and management of the stray current and the cathode protection data of the buried pipeline, so that the timeliness, the reliability and the authenticity of the stray current and the cathode protection data are guaranteed; besides, corresponding manpower resources are saved, and the operation management level of stray current protection and cathode protection for the pipelines are effectively improved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Device for testing characteristics of breaker opening and closing coils

The invention discloses a device for testing the characteristics of breaker opening and closing coils. The device comprises a controller, a coil resistance testing unit and a coil insulation and number-of-turns testing unit. The controller is respectively connected with a signal source, the coil resistance testing unit and the coil insulation and number-of-turns testing unit, the coil resistance testing unit and the coil insulation and number-of-turns testing unit perform testing through a coil to be tested, tested data are sent to the controller, the controller performs fault diagnosis on the breaker opening and closing coils in real time, and therefore real-time monitoring of the breaker opening and closing coils is realized. According to the device, the performance and the quality of the coils are estimated through testing of the characteristics of the coils, quality defects and fault hidden dangers are eliminated, the reliability and the stability of products in use are guaranteed, and the operation safety of a power system is improved.
Owner:STATE GRID CORP OF CHINA +1

Refuse landfill intelligent management system

The invention belongs to the technical field of monitoring, and provides a refuse landfill intelligent management system which comprises a control center, a vehicle monitoring sub-system, a landfill monitoring sub-system, an admission amount monitoring sub-system and a leachate treatment station monitoring sub-system, wherein the vehicle monitoring sub-system, the landfill monitoring sub-system, the admission amount monitoring sub-system and the leachate treatment station monitoring sub-system are connected and communicated with the control center. Each monitoring sub-system is used for monitoring each process area in a refuse landfill in real time and giving an early alarm when abnormal conditions occur. The control center is used for receiving information sent by each monitoring sub-system, displaying the running condition of each area in real time, processing the information, displaying the processed information in forms of a table, a graph and / or an image, receiving control instructions, regulating and controlling each monitoring sub-system, and conducting remote monitoring in an Internet issuing mode as well. According to the refuse landfill intelligent management system, the refuse landfill is intelligently monitored, and the running management level and safety of the refuse landfill are improved.
Owner:瀚蓝城市环境服务有限公司

Method for evaluating power quality comprehensively based on the Vague sets and the improved technique for order preference by similarity to ideal solution and application thereof

The invention discloses a method for evaluating power quality comprehensively based on the Vague sets and the improved technique for order preference by similarity to ideal solution and the application thereof. The method consists of the steps of: monitoring the common connection points of an offshore wind power plant, and acquiring the simulation data of power quality indicators; determining the weight vectors (i)W( / i) of the power quality indicators of each evaluation object; indicating the scores of the indicators of each evaluation object with Vague values; determining an absolute positive ideal solution and an absolute negative ideal solution; calculating the distance between each evaluation object and the absolute positive ideal solution and the distance between each evaluation object and the absolute negative ideal solution and the relative closeness of each evaluation object, and comprehensively evaluating and sequencing the power quality according to the calculated results. By means of this invention, the weights are determined more objectively and less subjectively, and in the meantime, the weight of indicators and the weights of the true membership function, the false membership function and the abstention part of the indicators are considered, so that the evaluation result can be closer to the actual situation. The method plays a very significant role in enhancing the transparency of the power market and improving the power supply quality of the power system.
Owner:ZHEJIANG UNIV

System and method of testing high-voltage circuit breaker

The present invention discloses a system and method of testing a high-voltage circuit breaker. The system comprises a speed measurement sensor, a distance measurement sensor, a current sensor, a data acquisition and processing system and an industrial control computer. The insulation characteristics, the electrical characteristics and the mechanical characteristics, measured by the speed measurement sensor, the distance measurement sensor and the current sensor, of a high-voltage circuit breaker are sent to the industrial control computer through the data acquisition and processing system; the insulation characteristics are the leakage current and the insulation resistor of the high-voltage circuit breaker; the electrical characteristics are the opening and closing current and the measurement current; and the mechanical characteristics are the total motion time, the motion amount and the motion merge-joint direction of the high-voltage circuit breaker, and the accelerated speed, the acceleration time, the uniform motion speed, the uniform motion time, the deceleration process of the motion, the overshoot of the motion and the overshoot time when the motion starts. The system and method of testing a high-voltage circuit breaker are able to discover an abnormal state and predicate a fault period at the early state of the fault so as to fully make a service preparation and provide a technology basis for reasonably making the maintenance plan of a device, therefore the operation reliability of the power grid is improved.
Owner:JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1

Intelligentized sewage treatment expert system

The invention discloses an intelligentized sewage treatment expert system, and belongs to the technical field of environmental engineering .The expert system comprises a data storage device and a display device; input data and a data analysis result can be displayed in the display device; the display device can display two first-stage modules including the operating management problem query module and the effluent quality standard exceeding reason reasoning module; the effluent quality standard exceeding reason reasoning module is provided with five second-stage modules including the effluent TN quality standard exceeding reason judging module, the effluent NH3-N quality standard exceeding reason judging module, the effluent COD quality standard exceeding reason judging module, the effluent SS quality standard exceeding reason judging module and the effluent TP quality standard exceeding reason judging module .According to the expert system, sewage treatment field expert-level experience and knowledge are integrated into the same system platform, a more convenient way capable of effectively solving the practical problems is supplied to technicians in the sewage treatment field, checking can be conducted in time, an effective solution can be presented in time, and the operating management level of a sewage treatment plant is increased.
Owner:无锡普汇环保科技有限公司

Portable mobile alternating current intrusion fault detection and positioning device

At present, most of alternating current intrusion fault detection devices are fixedly installed, while, with such kind of installation mode adopted, a specific fault point cannot be judged and positioned; some mobile grounding fault finding devices take alternating current intrusion faults as common grounding faults and perform troubleshooting through injecting a low-frequency signal. The invention belongs to the electric power detection technical field and provides a portable mobile alternating current intrusion fault detection and positioning device. The portable mobile alternating current intrusion fault detection and positioning device comprises a host signal source and a hand-held detector; the host signal source is used for monitoring whether alternating current intrusion exists in a direct-current system, displaying voltage and alternating current components in the direct-current system and issuing data information to the handheld detector; and the handheld detector performs alternating current intrusion point troubleshooting according to received data information. According to the portable mobile alternating current intrusion fault detection and positioning device of the invention, a non-fixed installation mode is adopted, and therefore, with a portable mobile type installation structure adopted, the portable mobile alternating current intrusion fault detection and positioning device can move to find a fault point and position a specific alternating current intrusion fault point.
Owner:BEIHAI POWER SUPPLY BUREAU OF GUANGXI GRID +1

Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method

The invention relates to an electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method. The method comprises the following steps: 1, a three-phase rating table is arranged in every electrical transformer district, and three phase components through three-phase rating tables are obtained and are transmitted to a concentrator; 2, the practical phase of a carrier wave from all single phase measurement points is acquired by an electrical transformer district router and is transmitted to the concentrator; 3, an electricity energy acquisition main station request a communication protocol and a measurement point number to the concentrator, and the electrical transformer district rating tables, all the single phase user tables and the electrical transformer district three-phase table electricity power information are acquired from the concentrator; and 4, the line loss of every single phase is calculated through using a single phase line loss formula according to the acquired electrical transformer district rating tables, all the single phase user tables and the electrical transformer district three-phase table electricity power information. Compared with the prior art, the method disclosed in the invention has the advantages of accurate calculation and convenient querying.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1

Optimum start-stop control method of central air-conditioning refrigerating system

The invention discloses an optimum start-stop control method of a central air-conditioning refrigerating system. The method comprises the following step: establishing a central air-conditioning precooling load model and optimum start control of the refrigerating system based on the model. Meanwhile, a control network system needed to implement the optimum start control is included. The control network comprises three-layer network architectures which are separately a monitoring center, a trunk transport network and a field control network, wherein the monitoring center uses the Ethernet, the trunk transport network uses the fiber optic Ethernet and the field control network uses the Ethernet; the field control network comprises three sub systems which are separately a cold station controlsystem, an energy consumption metering and analyzing system and a terminal air conditioner control system, wherein the terminal air conditioner is formed by a plurality of regional control systems. Onthe premise of guaranteeing that parameters of the air conditioner reach the standard, optimum energy consumption of the air conditioning system can be achieved, and the safe reliability of system operation is guaranteed.
Owner:江苏联宏智慧能源股份有限公司

Distribution network maintenance time optimization method and system

The invention relates to a distribution network maintenance time optimization method and system. Related data of each feeder device in the distribution network are acquired to generate a distributionnetwork maintenance scheme; and the distribution network maintenance scheme is set as a chromosome, a genetic algorithm is adopted to solve the pre-built distribution network state maintenance model to obtain the optimal maintenance time of each feeder, wherein the related data of each feeder device in the distribution network comprise the health index of a device on each feeder of the distribution network. The technical scheme provided in the invention solves the problem of large deviation of reliability prediction evaluation decision making under a small time scale, and can also guide and support the distribution network state maintenance work with a feeder, a substation or an associated device combined, and leap of a scientific, quantitative and economic maintenance technology is realized.
Owner:CHINA ELECTRIC POWER RES INST +2

Alternating-current intrusion fault warning and maloperation prevention device

ActiveCN106786467AEasy to checkReduce the risk of protection misoperationPower supply testingFault locationVoltage amplitudeEngineering
The invention relates to the technical field of power detection, in particular to an alternating-current intrusion fault warning and maloperation prevention device. Aiming at resistive alternating-current intrusion, an appropriate capacitive load is input between a direct-current power bus and the ground automatically according to an intrusion alternating-current voltage amplitude in order to reduce the intrusion alternating-current amplitude of an alternating current power source into a direct-current power supply system, and accordingly risks of protection maloperation caused by alternating-current intrusion faults of the direct-current power supply system can be reduced. The alternating-current intrusion fault warning and maloperation prevention device is applicable to monitoring of alternating-current intrusion faults of direct-current power supply systems at different voltage classes of 220V / 110V / 48V and the like in substations or power plants and can be used for detection of various alternating-current intrusion faults in a range of 0-285V, warning time is shorter than 0.2s, and recording of alternating-current waveforms and intrusion waveforms is realized; equipment operation reliability of the substations or the power planes can be improved beneficially, maloperation is prevented, and serious and major accidents are reduced.
Owner:GUANGXI POWER GRID CO LIUZHOU POWER SUPPLY BUREAU +1

Intelligent routing inspection system and method of factory running device

The invention discloses an intelligent routing inspection system and method of a factory running device. The intelligent routing inspection system comprises electronic tags, a mobile terminal and a server, wherein the mobile terminal is in signal connection with the server. The method comprises the following steps: the server edits the routing inspection project information of a device in the catalogue of each electronic tag according to the routing inspection content of the marked device corresponding to the electronic tag; the mobile terminal senses the electronic tag on the device, reads the device information, and sends the device information of the device marked by the electronic tag to the server; the server sends the routing inspection project information of the corresponding device to the mobile terminal; the mobile terminal obtains the corresponding routing inspection information of the device according to the routing inspection project information, and sends the routing inspection information to the server; the server analyzes the received routing inspection information, obtains the running state of the device according to the analysis result, and issues the abnormal information of the device in real time. According to the intelligent routing inspection system and method of the factory running device, the routing inspection information of the device can be obtained in real time, the running state of the device can be analyzed, and the device can be timely repaired and maintained, so that the device is in controllable and in-control states.
Owner:CHINA RESOURCES CEMENT TECH RES DEV

Active low-voltage power distribution network fault positioning optimization method based on hierarchical model

The invention discloses an active low-voltage power distribution network fault positioning optimization method based on a hierarchical model. The active low-voltage power distribution network fault positioning optimization method comprises the following steps of: performing hierarchical equivalence on a power distribution network; setting a plurality of monitoring nodes and reporting monitoring information; encoding a fault state of a fault current information monitoring section reported by means of the monitoring nodes; constructing a monitoring node switching function of the power distribution network by utilizing a monitoring node switching state information matrix and a section state information matrix; introducing a decision-making variable Di of information distortion to form a faulthypothesis vector; and introducing a section state Si and a distortion factor into the design of the decision-making variable to design a target function. According to the active low-voltage power distribution network fault positioning optimization method, a weight coefficient of a key node is optimized, stability and precision of a positioning algorithm are provided, a fault information reporting threshold value is designed according to access conditions of distributed power supplies of an actual low-voltage power distribution network, the number of the distributed power supplies in the model is reduced, the hierarchical model is optimized, positioning efficiency and precision are improved, and the operation management level of a power supply department is improved.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO +1

Energy monitoring and management system based on energy storage device and management method thereof

The invention discloses an energy monitoring and management system based on an energy storage device and a management method thereof. The energy monitoring and management system based on the energy storage device comprises an energy storage device-based terminal unit, energy control devices, an intensive energy monitoring and management platform, a power grid operation system, a market trading system and a user operation system, wherein the energy storage device-based terminal unit is physically connected with an external power supply and is in wired or wireless communication connection with the energy control devices; the energy control devices are in wired or wireless communication connection with the intensive energy monitoring and management platform; the energy control devices are inwired or wireless communication connection; and the intensive energy monitoring and management platform is in wired or wireless communication connection with the power grid operation system, the market trading system and the user operation system respectively. The application efficiency of the energy storage device can be better enhanced, power demands of a user side can be better met, the energyutilization level is improved, and the social and economic benefits and the environmental friendliness are enhanced on the whole.
Owner:方日升 +1

Load shedding and dynamic partitioning coordination control method considering electric power safety accident risk

The invention discloses a load shedding and dynamic partitioning coordination control method considering electric power safety accident risk, and belongs to the technical fields of an electric power system and automation thereof. According to the load shedding and dynamic partitioning coordination control method, the number of the maximum available dynamic partitioning operations is determined according to overload safety margin of equipment under preconceived faults; whether the equipment overload problem under the preconceived faults can be solved or not is verified under the maximum operating number constraint after each dynamic partitioning operation with qualified comprehensive control performance is implemented; if the equipment overload problem can be solved, the optimal dynamic partitioning operation combination is selected therefrom; if the equipment overload problem cannot be solved, the load-shedding performance cost ratio of each alternative load-shedding point is calculated by considering the electric power safety accident risk; and the load with the highest performance cost ratio is cut off in an iteration manner until the overload problem under the preconceived faults is solved. By adoption of the load shedding and dynamic partitioning coordination control method, the electric power safety accidents caused when the overload problem is solved by load shedding can be effectively reduced or eliminated, so that the operating management level of the power grid can be improved.
Owner:NARI TECH CO LTD +1

Method for determining coagulant optimal addition quantity and optimal pH in water treatment

The invention discloses a method for determining optimal coagulating agent feeding amount and optimal pH value in water treatment, which comprises the following steps of: (1) determining boundary condition of coagulating agent feeding amount, and determining the molar ratio range of metal ions in the coagulating agent and the total phosphorus in the water to be treated; (2) determining boundary condition of pH value and determining the range of pH value; and (3) conducting simplex optimization experiments by collecting a water sample, placing into a container, selecting three points in the molar ratio range of metal ions in the coagulating agent and the total phosphorus in the water sample to be treated, stirring, settling, collecting liquid below liquid level, measuring the concentration of normal phosphate and total phosphorus, and determining the optimal coagulating agent feeding amount and optimal pH value in water treatment according to the result. The inventive method has simple operation and can conveniently determine the optimal coagulating agent feeding amount and optimal pH value in water treatment; and the total phosphorus removal rates using each of the coagulating agents all reach optimal level. The inventive method improves the operational management level of sewage treatment plants and water regeneration plants.
Owner:TIANJIN MUNICIPAL ENG DESIGN & RES INST

Power distribution automation monitoring platform

The invention discloses a power distribution automation monitoring platform, and belongs to the technical field of intelligent power distribution integration. The power distribution automation monitoring platform is characterized by comprising a power distribution automation main station, multiple substations connected with the power distribution automation main station through an SDH optical fiber backbone network, and multiple power distribution automation terminals connected with the substations through an optical fiber ring network, wherein the substations are connected with loads through an optimization compensation apparatus; each substation comprises a substation router and a substation interchanger which are in communication through an Ethernet network; the substation router is connected with the SDH optical fiber backbone network; and the power distribution automation terminals are connected to the optical fiber ring network through a terminal interchanger. A high-voltage bus is provided with a high-voltage electric parameter data terminal, so that accurate metering and improvement of a protection effect are achieved; by virtue of a high-voltage protection system, failures are reduced, the protection characteristic is improved, and the problems existing in conventional power distribution are overcome; and in addition, by adoption of the power distribution automation monitoring platform, the effects of electricity larceny prevention, accurate metering, energy saving and power saving, sensitive control, safety, concurrent equipment upgrading and automation, and reduction of power grid line loss can be realized.
Owner:DONGYING POWER SUPPLY COMPANY STATE GRID SHANDONG ELECTRIC POWER +1

Automatic analysis method, system and equipment for operation problem of distribution network line

The invention relates to an automatic analysis method, system and equipment for a distribution network line operation problem. The method comprises the following steps of: determining power supply capability data, operation risk data, line new user access data and line scheduling data by acquiring current data, user installation capacity data, installation user quantity, line account data, business work order data, line topology data and user account data of a distribution network line; and analyzing and outputting the identified operation problem of the distribution network line based on a preset condition so as to realize automatic revelation of the operation problem of the distribution network line. According to the method, automatic statistical analysis of distribution network line operation problems is realized, manual statistical analysis is replaced, the working efficiency is improved, and the workload is reduced; meanwhile, automatic revelation of the operation problem of the distribution network is realized, a foundation is laid for improving the operation management level of the distribution network, and the high-quality power supply requirement of a power user is ensured.
Owner:FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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