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38results about How to "Performance real-time monitoring" patented technology

Data scheduling method and system of equity linked network

ActiveCN101296152AReduce data requestsImprove download capabilityNetworks interconnectionReal-time computingData request
The embodiment of the invention provides a data scheduling method of P2P networks and a system thereof. The method comprises the steps that: local nodes send an initial data request to all service nodes and all the service nodes send back the initial data to the local nodes; the local nodes calculate the performance parameters of all the service nodes respectively according to the performance indexes of all the service nodes transmitting the initial data; all the service nodes are sorted according to the performance parameters calculated and a data request is carried out again to service nodes according to the sorting result. The method and the system can improve downloading performance, realize real-time monitoring towards the performance of all the service nodes, control the current downloading scheduling by utilizing the monitoring situation, thereby guaranteeing full and effective utilization of the current service nodes and being able to self adapt to the change of network situations.
Owner:TENCENT TECH (SHENZHEN) CO LTD +1

Petroleum drilling real-time monitoring system

InactiveCN102828747AViscosity is accurate in real timeAccurate viscositySurveyDisplay devicePetroleum
The invention provides a petroleum drilling real-time monitoring system which comprises a drilling liquid performance monitoring instrument, a geological logging monitoring instrument and a drilling engineering parameter monitoring instrument, wherein sensors are arranged on all the instruments; the sensors are used for transmitting a detecting signal to computer processing equipment through a wireless transmitting and receiving system, and the detecting signal is processed through the computer software and then converted into a chart to be displayed through a display in real time. With the adoption of the petroleum drilling real-time monitoring system, the shortcomings of the comprehensive logging instrument that only the geological logging and drilling engineering parameters can be monitored can be overcome; the drilling liquid performance can be monitored online in real time, so that the drilling liquid, the drilling engineering and the geological logging can be integrated and processed through a computer, and then a comprehensive system integrating the acquiring, displaying and processing of various data at a drilling site can be formed; the comprehensive system can meets the various demands of safely optimizing the drilling and comprehensively determining an oil-gas-water layer.
Owner:韩文峰

Method for measuring drainage pump output of low pressure heater system of thermal generator set based on energy balance

The invention relates to a method for measuring the drainage pump flow of a regenerative system of a thermal generator set based on energy balance. A thermodynamic system in the method consists of low pressure heaters connected in series. The method comprises the following steps of: mixing drained water of a first-stage low pressure heater with outlet condensed water of the first-stage low pressure heater by using a drainage pump, wherein the drained water of the other low pressure heaters of all stages flows automatically stage by stage; acquiring the extraction temperature and pressure, the outlet water temperature and pressure and the drained water temperature of each low pressure heater from a database of a plant-level supervisory information system (SIS) or a decentralized control system (DCS) of a thermal power plant; calculating the stream extraction enthalpy value of each low pressure heater, the outlet water enthalpy value of the low pressure heater and the drain water enthalpy value of the low pressure heater; establishing a heat balance equation for each low pressure heater, and establishing a flow balance equation and a mixing point heat balance equation for a mixing point of outlet water of the drainage pump of the first-stage low pressure heater; deducing an iteration-free soft measurement model according to the balance equations, and calculating flow shares of the drainage pump; and finally, calculating the drainage pump flow according to a flow detection value of the condensed water.
Owner:SOUTHEAST UNIV

Flow measuring method for thermal power generation unit independent low pressure heater drain pump based on energy balance

A flow measuring method for a thermal power generation unit independent low pressure drain pump based on energy balance. The thermal power system in the invention is composed of an independent low pressure heater (low pressure heater for short) and a drain pump; wherein, the drain pump is adopted to mix the low pressure heated drain water with condensation water at the outlet of the drain pump, and no other drain water flows in for low pressure heat release. Low pressure heated steam extraction temperature and pressure, outlet water temperature, pressure and drain water temperature can be obtained from the databases of a thermal power plant supervisor information system (SIS) or a distributed control system (DCS); the steam extraction enthalpy of the heater, the low pressure heater outlet water enthalpy and low pressure heater drain water enthalpy are obtained through calculation. A heat transfer balance equation is created for the low pressure heater, a flow balance equation and a mixing point thermal balance equation are created for the drain pump outlet water of the low pressure heater and the low pressure heater outlet water mixing point; a soft measurement module is deduced through the balance equations, and the flow portion of the drain water is obtained through calculation. Finally, combined with the condensation water detection value in the SIS or DCS database, the drain pump flow is figured out accordingly.
Owner:SOUTHEAST UNIV

Method for measuring and calculating pump efficiency based on soft flow measurement for drainage pump

The invention discloses a method for measuring and calculating pump efficiency based on soft flow measurement for a drainage pump. A thermodynamic system consists of a low-pressure heater (low heater for short) and the drainage pump which are connected in series. The method comprises the following steps: acquiring water pressure of an outlet of the low heater with the drainage pump, acquiring the temperature of inlet water of the drainage pump and acquiring real-time current and real-time voltage of a motor collocated in the drainage pump, motor efficiency and power factor from a database of a factory-level SIS or a DCS of a heat-engine plant, acquiring inlet water pressure and average drainage specific volume of the drainage pump through calculation, calculating the pressure difference of the drainage pump, namely the difference between the outlet water pressure of the heater with the drainage pump and the inlet water pressure of the drainage pump, calculating the flow of the drainage pump by using a method for measuring and calculating the flow of the drainage pump in a low heating system of a thermal power unit based on energy balance, and calculating the output power and the input power of the drainage pump according to the data. The ratio of the calculated output power to the input power is the efficiency of the drainage pump.
Owner:SOUTHEAST UNIV

Real-time monitoring method and the real-time evaluation method for seismic performance of building anti-seismic fupport post

The invention discloses a real-time monitoring method and a real-time evaluation method for the seismic performance of a building anti-seismic fupport post. The method comprises the steps of installing a strain sensor in a boom of the anti-seismic fupport post, and installing an acceleration sensor in an inclined strut; recording the initial mass m of a construction electromechanical engineering facility, selecting monitoring data within a certain time length t1 as a calculation interval, calculating the self-vibration cycle average value Ttest and the static strain average value epsilon test1 of obtained original data after the installation of the anti-seismic fupport post and before the usage of the anti-seismic fupport post, and calculating the initial rigidity k of the anti-seismic fupport post based on the initial mass m and the self-vibration cycle average value Ttest; during the usage stage, selecting monitoring data within a certain time length t2 as a calculation interval, calculating the static strain average value epsilon test 2, the actual quality mtest of the construction electromechanical engineering facility and the resistant-lateral rigidity ktest. The invention discloses a real-time assessment method for the anti-seismic fupport post. According to the invention, the performance of the anti-seismic fupport post can be monitored in real time, so that the use health condition of the anti-seismic fupport post can be further evaluated. The early warning for maintenance and replacement is provided. The advantages of convenience, real-time performance, safety andthe like can be realized.
Owner:JIANGSU YIDINGGU ELECTROMECHANICAL TECH CO LTD

Modeling method of using membrane humidifier to realize fuel-cell intake-air humidification

The invention provides a modeling method of using a membrane humidifier to realize fuel-cell intake-air humidification. A transient simulation model of the one-dimensional flat membrane humidifier isestablished. Governing equations of the model include four conservation equations of a water content in membrane, water vapor in a flow channel, liquid water in a wet side flow channel and energy. High-heat high-humidity exhaust gas of a fuel cell stack is used to humidify desiccated low-temperature reaction gas at a humidification inlet, and a water-heat coupling transfer process inside the humidifier, phase change processes among the water vapor, the liquid water and membrane water and a combined humidification function of water and gas are fully considered. The model is based on a display format updating algorithm, the governing equations are solved at a center of each layer, calculation efficiency is high, and sufficient model accuracy can be guaranteed. The membrane humidifier model can realize coupling with the electricity stack, and a perfect humidification system is constructed through setting of boundary conditions to be used as a numerical simulation tool of heat and mass transfer analysis, structure optimization and type selection of a system, and has very high guiding significance for actual product development.
Owner:TIANJIN UNIV

Independent low-pressure heater and drainage pump flow soft measurement-based method for measuring and calculating pump efficiency

The invention relates to an independent low-pressure heater and drainage pump flow soft measurement-based method for measuring and calculating pump efficiency. A thermodynamic system of the invention consists of an independent low-pressure heater (LH) and a drainage pump. The method comprises the following steps of: acquiring the water pressure at the outlet of the heater with the drainage pump from a database of a heat-engine plant supervisor information system (SIS) or a decentralized control system (DCS); acquiring the water temperature at the inlet of the drainage pump; acquiring the real-time current and voltage, efficiency and power factor of a motor of the drainage pump; acquiring the water pressure at the inlet of the drainage pump and the drainage average specific volume through calculation; calculating the pressure difference of the drainage pump, namely the difference between the water pressure at the outlet of the heater with the drainage pump and the water pressure at the inlet of the drainage pump; calculating the flow of the drainage pump by using a method for measuring and calculating the flow of the independent low-pressure heater and drainage pump of a heat-engine machine set based on energy balance; figuring out the output power and the input power of the drainage pump according to the data; and calculating a ratio of the output power to the input power, namely the efficiency of the drainage pump.
Owner:SOUTHEAST UNIV

Solar electronic advertising screen

InactiveCN106782072AAngle adjustment control is convenientImprove efficiencyBatteries circuit arrangementsElectric powerElectricitySolar power
The invention relates to the technical field of electronic advertising screens, and in particular to a solar electronic advertising screen. The solar electronic advertising screen comprises a base, a support and an advertising screen body and is characterized in that a controller and a storage battery are arranged in the base, wherein the storage battery supplies electricity for the advertising screen body; the support is of a framework structure; the advertising screen body is fixed in the support; the support is fixed on the base; an exhaust fan is arranged on the support; a temperature sensor and a light sensor are arranged on the advertising screen body; a solar panel component is arranged on the top of the support and comprises a solar panel, a supporting rod and an air cylinder; a rotating disk is connected to the lower end of the supporting rod; a motor is connected to the rotating disk and is fixed on the support; the upper end of the supporting rod is hinged to the middle part of the solar panel; the air cylinder is fixed on the support. According to the solar electronic advertising screen adopting the technical scheme, disclosed by the invention, the solar power generation efficiency can be improved; meanwhile, the performance of the advertising screen is guaranteed.
Owner:成都西川文化传媒有限公司

Service performance monitoring method, reverse proxy server, statistical analysis server and system

The embodiment of the invention discloses a service performance monitoring method, a reverse proxy server, a statistical analysis server and a system, relates to the field of information technology, and aims to increase the monitoring efficiency and accuracy of service performance and ensure stable running of services. The method comprises the following steps: receiving a user service request by using the reverse proxy server, wherein the user service request carries service identification information; sending the user service request to a corresponding service server according to service identification information by using the reverse proxy server to perform service processing; acquiring time information about service processing of the service server; and saving the time information and the service identification information in a database by using the reverse proxy server in order that the statistical analysis server generates performance statistical data corresponding to a service.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Centralized memory monitoring method and device

The invention provides a centralized memory monitoring method and device. The method comprises the steps of obtaining performance data of at least one performance index of a centralized memory in a first time period; inputting the performance data of the at least one performance index in the first time period into a preset dynamic baseline model to obtain a first dynamic baseline of the at least one performance index in a second time period output by the preset dynamic baseline model, the second time period being later than the first time period; obtaining performance data of at least one performance index of the centralized memory in the second time period; and comparing the performance data of the at least one performance index in the second time period with the first dynamic baseline, determining whether the at least one performance index is abnormal in the second time period or not according to a comparison result, if the at least one performance index is abnormal in the second time period, generating abnormal information of the at least one performance index, and sending the abnormal information to an alarm platform. Thus, the performance of the centralized memory is monitoredand predicted.
Owner:TRAVELSKY

Structural performance digital twinborn body construction method of intelligent excavator

ActiveCN112836404AReal-time monitoring of operating limit positionsRealize virtual visual miningDetails involving processing stepsControl safety arrangementsElement analysisData information
A structural performance digital twin construction method of an intelligent excavator comprises the following steps: performing finite element analysis on key parts in the excavation process of the intelligent excavator to obtain related structural mechanical properties; collecting important operation states of key parts of the intelligent excavator in the excavation process, and acquiring key operation data through data processing calculation; fusing sensor data and an artificial intelligence algorithm, and using the prediction model for conducting structural performance prediction on intelligent excavator parts under various unknown working conditions; and finally, modeling and rendering the performance data information by utilizing a computer graphics technology to obtain a digital twinborn body for displaying the structural performance of the intelligent excavator, and realizing digital twinborn mapping of the performance information of the key parts in the excavation process of the intelligent excavator. Under various operation conditions, the structural mechanical properties of key parts of the intelligent excavator are calculated in real time through the sensors and the artificial intelligence algorithm, and the practical functions of real-time display monitoring of performance information, excavation track display, feedback control, fault early warning and the like are achieved.
Owner:DALIAN UNIV OF TECH

Performance monitoring, diagnosis and maintenance for industrial controller with automatic operation capability

The invention disclose a performance monitoring, diagnosis and maintenance for an industrial controller with the automatic operation capability, and the method comprises the following steps: S1, respectively collecting and storing the data samples of a control loop set value variable SP, a controller output variable OP, a process output variable PV, an actuator state variable AV, a redundancy measurement variable SV and a related process variable RV; S2, recognizing a process model according to the above data samples of the variables, assessing and diagnosing the performance of the controller, so as to obtain the working state of the controller, and adjusting the a variable parameter, corresponding to the working state, of the controller according to a preset processing strategy and the obtained working state. The method can automatically analyze the daily industrial operation data, automatically extracts process information, continuously updates the performance reference automatically according to the changes of dynamic characteristics, and guarantees the real-time monitoring of the performances of the controller.
Owner:清云智控(北京)科技有限公司

Performance monitoring method of oil chromatogram on-line monitoring equipment

The invention provides a performance monitoring method of oil chromatogram on-line monitoring equipment. The performance monitoring method comprises the following steps of: summarizing oil chromatogram on-line monitoring data of the oil chromatogram on-line monitoring equipment of each stage of power grid; calculating abnormal probability of the oil chromatogram on-line monitoring equipment according to the oil chromatogram on-line monitoring data; generating a performance description curve of the oil chromatogram on-line monitoring equipment according to the abnormal probability respectively; and monitoring the performance of the oil chromatogram on-line monitoring equipment according to the performance description curve. Through the technology provided by the invention, scientific and real-time monitoring of performance of the oil chromatogram on-line monitoring equipment can be realized, so that the performance conditions of various types of oil chromatogram on-line monitoring equipment can be quickly and accurately mastered by an upper main network, the reliability, the stability and the effectiveness of the oil chromatogram on-line monitoring data are guaranteed, and an important decision making reference is provided for purchasing and type selection of the equipment.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Real-time monitoring method and device for abnormal power performance of wind turbine generator

The invention relates to a real-time monitoring method for abnormal power performance of a wind turbine generator. The method comprises the following steps: acquiring historical operation data of a to-be-monitored wind turbine generator and historical data of an anemometer tower of a wind power plant in the same period; cleaning historical operation data of the to-be-monitored wind turbine generator, removing invalid data and reserving data of the to-be-monitored wind turbine generator in the normal operation state; and constructing a multi-dimensional feature vector representing the power performance of the wind turbine generator, and dividing the multi-dimensional feature vector into a model learning group and a model verification group. The method has the advantages that quantitative evaluation of the power generation power is more accurate and effective, the operation data of the wind turbine generator and the data at the anemometer tower are considered when the prediction model is established, and the prediction precision of the model is remarkably improved. The purpose of monitoring the power generation performance of the wind turbine generator in real time can be achieved. The power performance change condition of the wind turbine generator can be monitored in real time.
Owner:ZHEJIANG ZHENENG TECHN RES INST

Performance management method and device for service function chain system

The invention discloses a performance management method and device for a service function chain system and relates to the field of communication. The method comprises the steps that a monitoring module of a service function chain controller receives performance index data of the service function chain system; the monitoring module receives node performance data sent by monitoring agent modules of service nodes; and the service function chain controller selects the service nodes to establish a service function chain based on the performance index data and the node performance data and monitors and manages function nodes in the service function chain. According to the performance management method and device for the service function chain system provided by the invention, a service function chain performance management monitoring mechanism is increased; the service function chain controller can monitor the performance of the service nodes in real time; the service function chain system can satisfy special performance demands of user or third party service; the service function chain with performance guarantee is established for a customer; the service nodes in the operated service function chain can be timely replaced; the reliability of the service function chain system is increased; and the utilization efficiency of the service function nodes is improved.
Owner:CHINA TELECOM CORP LTD

Financial real-time informationized fixed asset processing device and system

The invention discloses a financial real-time informationized fixed asset processing device. The financial intelligent processing system comprises financial intelligent processing equipment. The financial intelligent processing equipment is composed of an antenna, a host and a chip. The antenna is of a double-antenna structure, the antenna is detachably and rotatably connected to the outer side ofthe host through a connecting frame, and the antenna is used for wireless transmission of data. The invention provides a cloud platform technology unified management processing method integrating fixed asset value automatic conversion, fixed asset performance real-time monitoring and accounting automatic processing. The method is suitable for financial fixed asset accounting of modern manufacturing enterprises. The value of the enterprise related fixed assets is reflected in real time according to different counting and depreciation modes or value reduction processing of the fixed assets setby equipment operation management personnel, corresponding accounting processing is timely and automatically carried out and recorded on a financial account set platform, and asset management of the enterprise and management overall planning of a financial sharing center are facilitated.
Owner:钟榆星

A Condenser Heat Exchange Performance Evaluation Method Based on Statistical Analysis of Operating Data

The invention discloses a method for evaluating the heat exchange performance of a condenser based on statistical analysis of operating data, which belongs to the technical field of thermal power generation. The evaluation methods in the prior art are difficult to achieve comprehensive and accurate evaluation. If the detection and evaluation of the condenser is carried out by using detection equipment, on the one hand, it needs to increase the cost input, on the other hand, it is difficult to evaluate in real time. According to the data of unit load, circulating water pump operation combination, low-pressure cylinder exhaust temperature, circulating water outlet temperature and circulating water inlet temperature data, the present invention uses a statistical analysis method to respectively establish a standard data fitting model and a comparative data fitting model to obtain condensate The comprehensive heat transfer performance of the condenser can be obtained, and the variation range of the condenser heat transfer performance can be obtained by comparing the differences between the two. The invention can comprehensively evaluate the heat exchange performance of the condenser, and then realize the real-time monitoring of the performance of the condenser, with low cost and less investment.
Owner:ZHEJIANG ZHENENG TECHN RES INST

Method for measuring and calculating pump efficiency based on soft flow measurement for drainage pump

The invention discloses a method for measuring and calculating pump efficiency based on soft flow measurement for a drainage pump. A thermodynamic system consists of a low-pressure heater (low heater for short) and the drainage pump which are connected in series. The method comprises the following steps: acquiring water pressure of an outlet of the low heater with the drainage pump, acquiring thetemperature of inlet water of the drainage pump and acquiring real-time current and real-time voltage of a motor collocated in the drainage pump, motor efficiency and power factor from a database of a factory-level SIS or a DCS of a heat-engine plant, acquiring inlet water pressure and average drainage specific volume of the drainage pump through calculation, calculating the pressure difference of the drainage pump, namely the difference between the outlet water pressure of the heater with the drainage pump and the inlet water pressure of the drainage pump, calculating the flow of the drainage pump by using a method for measuring and calculating the flow of the drainage pump in a low heating system of a thermal power unit based on energy balance, and calculating the output power and the input power of the drainage pump according to the data. The ratio of the calculated output power to the input power is the efficiency of the drainage pump.
Owner:SOUTHEAST UNIV

Intelligent self-learning verification system and method for electric energy meter

The invention relates to an intelligent self-learning verification system and method for an electric energy meter, the system comprises a collector and a processor, and the processor comprises a data analysis unit, a fault monitoring analysis unit and a verification bin self-verification unit. The method is applied to an intelligent verification system of metering equipment in the power industry, and long-time, continuous, stable and healthy operation of the automatic verification system is ensured. The self-learning intelligent verification capability of the system is applied, the environment state, the hardware operation state and the system abnormity of the system are collected and counted, and the verification equipment self-verification function is added. Therefore, the stability coefficient of the intelligent verification system is continuously improved, the performance is continuously optimized, the false detection rate of intelligent verification of the electric energy meter is reduced, and the working efficiency of operation and maintenance personnel is improved.
Owner:YUNNAN POWER GRID

Nanoimprint process monitoring method, nanoimprint process monitoring device and nanoimprint equipment

The invention discloses a nanoimprint process monitoring method, a nanoimprint process monitoring device and nanoimprint equipment, and the nanoimprint process monitoring method comprises the following steps: a light source emits a monitoring laser to a PCM module on a to-be-monitored object, wherein the to-be-monitored object comprises a nanoimprint template and / or a nanoimprint product; an imaging module receives the reflected laser of the PCM module to obtain a reflected light spot formed by the reflected laser; and a processor acquires the reflected light spot fed back by the imaging module and judges whether the to-be-monitored object is qualified or not according to the reflected light spot. According to the technical scheme, the PCM module is monitored through the monitoring laser,indirect non-contact real-time process monitoring can be conducted on the to-be-monitored object, and therefore real-time process monitoring is provided in nanoimprint lithography mass production.
Owner:GOERTEK INC

Server performance monitoring method and device, storage medium and terminal

The invention provides a server performance monitoring method and device, a storage medium and a terminal, and the method comprises the steps: transmitting a performance information obtaining instruction to a server, so as to obtain the performance information of the server; and displaying the obtained performance information. According to the scheme provided by the invention, the server performance can be monitored in real time.
Owner:GREE ELECTRIC APPLIANCES INC

A real-time monitoring method and device for abnormal power performance of wind turbines

The invention relates to a real-time monitoring method for abnormal power performance of a wind turbine, comprising the steps of: acquiring historical operating data of the wind turbine to be monitored and historical data of the anemometer tower of the wind farm where it is located in the same period; cleaning the historical operation data of the wind turbine to be monitored , eliminate invalid data, and retain the data under the normal operating state of the wind turbine to be monitored; and construct a multi-dimensional feature vector representing the power performance of the wind turbine, and divide the multi-dimensional feature vector into a model learning group and a model verification group. The beneficial effects of the present invention are: the present invention is more accurate and effective in quantitative evaluation of generated power, and not only the operating data of the wind turbine itself but also the data at the wind measuring tower are considered when establishing the prediction model, which significantly improves the model performance. prediction accuracy. The purpose of real-time monitoring of the power generation performance of the wind turbine can be realized; the invention can also monitor the change of the power performance of the wind turbine in real time.
Owner:ZHEJIANG ZHENENG TECHN RES INST

Software performance monitoring method and device

The invention provides a software performance monitoring method and device. The method comprises the steps of obtaining memory occupation data of target software in a current system; obtaining a memory early warning value and a memory alarm value; and comparing the memory usage data with the memory early warning value and the memory alarm value, and generating a monitoring measure when a comparison result meets a preset strategy. In the software performance monitoring method and device, electronic equipment and a computer readable medium, the performance of the management software can be automatically monitored in real time without the help of other tool software and manpower participation, alarm information is generated in time so that an administrator can make a corresponding optimization strategy, and normal operation of the management software can be effectively guaranteed.
Owner:HANGZHOU DPTECH TECH

Performance monitoring method of oil chromatogram on-line monitoring equipment

The invention provides a performance monitoring method of oil chromatogram on-line monitoring equipment. The performance monitoring method comprises the following steps of: summarizing oil chromatogram on-line monitoring data of the oil chromatogram on-line monitoring equipment of each stage of power grid; calculating abnormal probability of the oil chromatogram on-line monitoring equipment according to the oil chromatogram on-line monitoring data; generating a performance description curve of the oil chromatogram on-line monitoring equipment according to the abnormal probability respectively; and monitoring the performance of the oil chromatogram on-line monitoring equipment according to the performance description curve. Through the technology provided by the invention, scientific and real-time monitoring of performance of the oil chromatogram on-line monitoring equipment can be realized, so that the performance conditions of various types of oil chromatogram on-line monitoring equipment can be quickly and accurately mastered by an upper main network, the reliability, the stability and the effectiveness of the oil chromatogram on-line monitoring data are guaranteed, and an important decision making reference is provided for purchasing and type selection of the equipment.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Pump Efficiency Calculation Method Based on Flow Soft Measurement of Independent Low Addition Drainage Pump

A pump efficiency measurement method based on soft flow measurement of independent low-add-drain pumps. The thermal system of the present invention is composed of an independent low-pressure heater (referred to as low-pressure heater) and a drain pump. From the database of the plant-level monitoring information system SIS or the distributed control system DCS of the thermal power plant, obtain the outlet water pressure with the drain pump heater, obtain the temperature of the inlet water of the drain pump, and obtain the real-time current, real-time voltage, and motor efficiency of the drain pump configuration motor. With the power factor, the inlet water pressure of the drainage pump and the average drainage specific volume are calculated, and the pressure difference of the drainage pump is calculated as the difference between the outlet water pressure of the heater with the drainage pump and the inlet water pressure of the drainage pump, and the independent thermal power unit based on energy balance is applied. The low-load drain pump flow measurement method calculates the drain pump flow rate, and calculates the drain pump output power and input power according to the above data. The ratio of output power to input power is calculated as the drain pump efficiency.
Owner:SOUTHEAST UNIV
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