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1416 results about "Purchase cost" patented technology

The purchase price is the price an investor pays for an investment, and the price becomes the investor’s cost basis for calculating gain or loss when selling the investment. The purchase price includes any commission or sales charges paid for the investment, and the weighted average cost is used for multiple purchases of the same security.

Dual-layer optimization method for power distribution network expansion planning and light storage locating and sizing

The invention discloses a dual-layer optimization method for power distribution network expansion planning and light storage locating and sizing. The method comprises the steps of building an upper-layer optimization model for active power distribution network expansion planning: determining a target function and constraint conditions of the upper-layer model; building a lower-layer optimization model for light storage capacity configuration: determining a target function and constraint conditions of the lower-layer model; and solving the upper-layer model and the lower-layer model: executing an upper-layer model optimization method, a lower-layer model optimization method and a dual-layer optimization method. According to the method, the built dual-layer optimization models taking a distribution network enterprise and users as subjects and taking calculation of optimal economic cost as a target comprehensively analyze economic influence of light storage system access and power distribution network expansion planning on the distribution network enterprise and the users; a planning model taking annual cost expense as a target function can well assess the economy of a power distribution network; and the light storage system can be reasonably configured, so that the power purchase costs of the users are effectively reduced, the on-spot consumption of photovoltaic energy is increased, and the network loss of a power distribution system can be effectively reduced.
Owner:TIANJIN UNIV

Multi-objective optimization scheduling method for electric vehicle charging station including photovoltaic power generation system

The invention discloses a multi-objective optimization scheduling method for an electric vehicle charging station including a photovoltaic power generation system, and belongs to the technical field of smart power grids. Power purchase cost minimization and circulating electric quantity minimization of an energy storage system are used as objective functions, and a multi-objective optimization scheduling model of the electric vehicle charging station including the photovoltaic power generation system is built; the decision variable of the scheduling model and the constraint condition of the decision variable are determined; basic data are determined; solution is carried out through a multi-objective optimization algorithm to obtain a non-dominated solution leading surface, and then multiple Pareto optimal solutions are obtained; according to the low comprehensive cost of the main circulating electric quantity of the energy storage system and the power purchase cost, the charging station scheduling optimal scheme is selected at last. The multi-objective optimization scheduling method is suitable for the electric vehicle charging station including the photovoltaic power generation system of various cities with rich light sources; the scheduling scheme of the electric vehicle charging station including the photovoltaic power generation system is optimized; theoretical bases and technical supporting can be provided for the scheduling of the electric vehicle charging station including the photovoltaic power generation system; the operation economical efficiency of the charging station is improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Charge and discharge optimizing method considering customer satisfaction and distribution network safety for electric automobile

The invention discloses a charge and discharge optimizing method considering customer satisfaction and distribution network safety for an electric automobile, and particular relates to a multi-objective bilevel charge and discharge optimizing method considering the customer satisfaction and network distribution safety constraint for the electric automobile. The multi-objective bilevel charge and discharge optimizing method is suitable for scheduling and controlling of network entry of large-scale electric automobiles. Based on the consideration of distribution network purchase and selling electricity price and electricity purchase cost, distribution network load fluctuation, customer charge demand, satisfaction participation of charge scheduling and the like, the invention provides a charge bilevel scheduling model for the electric automobile in the distribution network by using minimum electricity purchase cost and minimum load fluctuation of the distribution network as well as maximum satisfaction that the customer participates in charge scheduling as objects, and an NSGA-II algorithm and a Yalmip / Cplex tool are adopted for solving; electricity purchase cost and net load fluctuation of the distribution network is minimized by a distribution network layer, so operation economy of the distribution network is improved; a charging station layer is matched with the distribution network layer for scheduling; the satisfaction that the customer participates in charge and discharge scheduling is improved by adopting a two-stage optimizing method.
Owner:HOHAI UNIV

Comprehensive monitoring system for electric power system transformers

A comprehensive monitoring system for electric power system transformers comprises an IEC61850-based unified modularized CPU (central processing unit) hardware platform, a sensor, a system terminal, at least one of nine monitoring logical devices, and further comprises an expert analysis system, including a thermal management mathematical model and an oil and gas analysis mathematical model, wherein by configuring and starting software, a function for monitoring corresponding LDs (logical device) which are independent of one another is achieved; and by performing independent effective data acquisition on the transformers respectively, and integrating and processing the data by the CPU, the electric power system transformers are comprehensively monitored in a configurable way. The comprehensive monitoring system for the electric power system transformers is convenient and flexible in application; current situations of repeated data acquisition, and shortage of data integration, data processing, information exchange and information sharing are changed; conversion from the conventional mechanism-based timed maintenance to the state-based preventative maintenance is facilitated; the maintenance cost is obviously saved; service lives of the transformers are prolonged; and a customer can obviously reduce the purchase cost and the management cost.
Owner:SHENZHEN SHUANGHE ELECTRIC CO LTD

Energy optimizing dispatching method of home hybrid power supply system in real-time power price environment

The invention discloses an energy optimizing dispatching method of a home hybrid power supply system in a real-time power price environment. The energy optimizing dispatching method comprises the steps of establishing a flexible load working model according to a linear inequality constraint condition, obtaining electric energy matching between DG (distributed generation) and a load by use of a genetic algorithm (GA), performing automatic optimization by use of the information of the DG and the RTP (Real Time Price) and arranging the flexible load to operate at a lowest-price moment, developing a charge / discharge policy of an energy storage device to realize the energy re-planning of the DG, thereby satisfying the balance between supply and demand of the DG and the load, and finally, making up the difference between supply and demand in such a manner of supplying power to a storage battery or the load from a large power grid and reducing the power purchase cost to an utmost extent. The energy optimizing dispatching method of the home hybrid power supply system in the real-time power price environment provides detailed algorithm description for an actual smart home user as a test object; besides, the effectiveness of the developed policy in improving the utilization rate of the electric energy of the DG and the economic benefit of the user is proven through a series of experiments.
Owner:ZHEJIANG UNIV

Air processing device and method

The invention relates to an air processing device and method. The air processing device comprises a shell body. An indoor air inlet, an outdoor air inlet, a fresh air outlet, a turbid wind inlet and a turbid wind outlet are formed in the shell body. The shell body is internally provided with a fresh air channel and a turbid wind channel which are isolated with each other. The fresh air channel is used for communicating the indoor air inlet, the outdoor air inlet and the fresh air outlet. The turbid wind channel is used for communicating the turbid wind inlet with the turbid wind outlet. A purification dedusting module fresh air blower, a refrigerating and heating device and an air inlet converter used for closing the indoor air inlet or the outdoor air inlet are arranged in the fresh air channel. Accordingly, the fresh air channel not only can be communicated with the indoor air inlet to achieve the purpose of the circulation and purification of indoor air, but also can be communicated with the outdoor air inlet to achieve the purpose for improving the quality of the indoor air after outdoor fresh air is purified and then gets into the indoor, and the purpose for regulating the air temperature can be achieved as well. According to the air processing device and method, the device is extensive in use and capable of greatly reducing the purchase cost and the occupied space.
Owner:青岛莱菲尔电器有限公司

Detachable Disposable Mask and a Disposable Mask Body Thereof

A detachable disposable mask and a disposable mask body thereof is disclosed. The detachable disposable mask includes a disposable mask body and two straps. The disposable mask body has a thermoplastic filter sheet that contains polyolefin material. Each strap has two assembling members respectively located on two ends thereof. The assembling members are detachably assembled on the disposable mask body. After a period of use, the filtering effect of the disposable mask body is reduced, so the disposable mask body must be abandoned. However, since the assembling members of the straps are detachably assembled on the disposable mask body, the straps needn't be abandoned following the disposable mask body. Accordingly, the detachable disposable mask can avoid waste of straps, reduce users' purchase cost and improve the effect of environmental protection. The present invention claims the benefit of Chinese Patent Application No. 200610066167.3, filed Mar. 24, 2006.
Owner:CHIU CHUN LIANG

Construction method for processing and recycling slurry shield muck

The invention discloses a method for processing and recycling slurry shield muck. According to the method, slurry is coarsely screened, primarily swirled to remove sand and swirled for the second time to remove mud; then the processed over-rich slurry is pressed for filtering, so that the muck taken out along with a slurry recycling system of a slurry shield can be graded and separated more finely, thus the purpose of optimizing the performance of the shield recycling slurry can be achieved; meanwhile, due to the gradation and separation of the shield muck, particles of different types and different properties are recycled and reused specifically; useful components of the shield muck are reused in the scene shield construction, so that the material purchase cost can be saved; outward transport of the waste muck and outward drain of wastewater can be reduced; the construction cost can be saved; the construction environment can be effectively protected.
Owner:CHINA TUNNEL CONSTR GUANGDONG

Intelligent ordered charging management system for electric vehicle and ordered charging control method

The invention relates to the field of electric vehicle charging and provides an intelligent ordered charging management system for an electric vehicle and an ordered charging control method. The intelligent ordered charging management system for the electric vehicle comprises a terminal network cloud platform, an electric vehicle power battery APP system, an intelligent ordered charging management module, a charging station management system, an intelligent implementing network terminal server, a neural network algorithm module, a retired battery mobile type energy storage system and an energy storage inverter. The intelligent ordered charging management system has the advantages that the neural-network-based control system for intelligent ordered charging management of the electric vehicle intelligently manages and controls the charge-discharge time sequence of all electric vehicle power batteries in a charging station in combination of a mobile energy storage system built by retired power batteries, peak clipping and valley filling of the regional power grid are realized, the purchase cost of the charging station is reduced, and the operating efficiency of the charging station of the electric vehicle is maximized.
Owner:程伟

System and method for approval and allocation of costs in electronic procurement

InactiveUS20070192218A1Facilitates post-procurement approvalEasy to identifyComplete banking machinesFinanceInvoiceSystems approaches
A system, method and computer program product for approval and allocation of costs in electronic procurement is described, wherein approval and allocation of costs are made in response to an electronic invoice, which includes information used to allocate procurement costs to one or more cost centers.
Owner:LIBERTY PEAK VENTURES LLC

Sintering method of high-grade high-titania vanadium-titanium magnetite concentrate

The invention discloses a sintering method of a high-grade high-titania vanadium-titanium magnetite concentrate. The sintering method comprises the steps of: 1) placing a mixture composed of 65-70 parts by weight of high-grade vanadium-titanium magnetite concentrates, 10-15 parts by weight of low-grade ordinary fine ores, 6-8 parts by weight of quicklime, 5-6 parts by weight of limestone, 0-2 parts by weight of steel slag, 4.6-5 parts by weight of coke powder, and return mineral powder into a mixer and adding water for mixing, with the total weight of the high-grade vanadium-titanium magnetite concentrates and the low-grade ordinary fine ores controlled at 80 wt% of the mixture excluding the return mineral powder, and with sum of the proportion of the return mineral powder in the mixture excluding the return mineral powder and the sintering yield of a sintering machine less than or equal to 1; 2) putting the mixture in a sintering cup for ignition and air draft sintering, with the FeO content of the sintered ore controlled at 7-10 wt%, th vertical sintering speed controlled at 17-20mm / min, the thickness of a material layer controlled at 650-750mm, and the sintering temperature controlled at 1250-1300DEG C. The method of the invention can optimize the burdening structure of sintering raw materials and reduce the purchase cost of raw materials.
Owner:PANGANG GROUP RESEARCH INSTITUTE CO LTD +2

Network high available method and device based on docker

The invention discloses a network high available method and device based on a docker and relates to the technical field of a device or method for performing a special program. The method comprises the steps of setting virtual network card devices; adding a docker container network device; and bridging container network cards to the virtual network card devices through network bridge network cards. The method is based on a none network mode of the docker. The bridge network cards are added in a network plug-in mode. In a mode of linking the virtual network cards bonded with ports through the bridge network cards, various containers are supported to enjoy independent networks and independent IPs and do not share ports. Links are redundant, traffic loads are balanced, and the traffic bandwidth is increased. Through application of the method, the purchase cost of establishing a container virtualized system platform is reduced, and moreover, the reusability of server resources on operation of the same kinds of applications is improved.
Owner:北京赢点科技有限公司

A virtual power plant optimal scheduling method based on a master-slave game strategy

The invention discloses a virtual power plant optimization scheduling method based on a master-slave game strategy. The method comprises the following steps: 1, analyzing and constructing a virtual power plant model containing multiple load types; 2, establishing a virtual power plant transaction model based on an existing power market transaction mechanism; 3, establishing a risk cost model considering uncertain factors; 4, carrying out optimal scheduling on the virtual power plant by adopting a master-slave game strategy; And 5, solving the optimized scheduling model through a reinforcementlearning algorithm. According to the method, the volatility of distributed energy output in the virtual power plant and the uncertainty of load prediction are considered, an economic dispatching modelof the virtual power plant in the power market is constructed, and a master-slave game strategy and a reinforcement learning algorithm are adopted for optimization solution, so that the purposes of improving the production benefits of the virtual power plant and reducing the load power purchase cost are achieved.
Owner:HEFEI UNIV OF TECH

Integrated communication device with interphone and mobile phone function

A communication device integrating talkback and mobile phone functions comprises a first switching antenna, a mobile phone radio-frequency signal receiving-transmitting module, a mobile phone baseband signal processing module, and a man-machine interface module that are sequentially connected and used for mobile phone communication, as well as a second switching antennae, a talkback radio-frequency signal module, a talkback signal demodulating module, and a talkback baseband signal processing module that are sequentially connected and used for talkback communication. The mobile phone radio-frequency signal receiving-transmitting module has a clock interface for providing reference clock to the talkback radio-frequency signal module, so that the talkback communication and the mobile phone communication can share one clock, thereby reducing manufacturing cost of a manufacturer and user's purchase cost. Meanwhile, the mobile phone baseband signal processing module performs signal input and output with the talkback baseband signal processing module through idle control interfaces and data interfaces thereof, so as to transmit audio signals and text signals for free through talkback communication, thereby reducing user's service cost.
Owner:上海富太克投资咨询有限公司

Method for realizing QinQ access

The invention discloses a method for realizing QinQ simple and flexible access, so as to solve the problems in the prior art that the public network and the private network cannot be mixedly accessed, and multiple virtual private networks cannot share the bandwidth of one port. The present invention determines whether to add an outer layer public network VLAN tag and what kind of outer layer public network VLAN tag to add according to the access VLAN tag and port number of the data packet by establishing a QinQ configuration table, and pairs the added outer layer VLAN tag at the output port. The method of stripping labels realizes simple and flexible QinQ access. This method can realize the hybrid processing of multiple QinQs on one port, and realize the sharing of one port by multiple VPNs to realize bandwidth sharing. The port occupancy rate is reduced, and the purchase cost of the equipment is effectively reduced.
Owner:NEW H3C TECH CO LTD

Automated new energy technology consulting and demand aggregation system and method

InactiveUS7512540B2Expanding outreachLow costElectric devicesSpecial tariff metersViral marketingNew energy
An automated energy consulting system and method is provided comprising an interactive input system linked to calculation algorithms and databases of energy-related products and services, affiliated service providers, and climate, financing and regulatory criteria. The system generates proposals of available energy-related products, services and financing options, and obtains and aggregates customer commitments to allow discounted purchasing of the components. Customers can earn referral commissions to encourage customers and volunteers to virally disseminate the access information. For customers not eligible for beneficial products and services because of regulatory deficiencies, the system automates the customer education process to encourage them to advocate politically for the changes that will make them eligible. The automation of the energy consulting and marketing process, mass customization, demand aggregation, and viral marketing reduce customer acquisition and component purchasing costs and reduce the price to consumers, creating new economically viable markets for environmentally friendly energy-related products and services.
Owner:GLUCK DANIEL S +1

Global Smart Manufacturing Sales Service System

The invention relates to a global smart manufacturing sales service system integrating information technology, Digital and intelligent global purchasing, Payment, Intelligent Manufacturing, sales andlogistics distribution as one, enabling Global Power, Small and medium-sized enterprises, making them available for global procurement, Global sales, Intelligent manufacturing capabilities, and improving global logistics and distribution, efficiency of global payments. At the same time, in order to ensure the independence of enterprise operation information, based on confidentiality and security,global enterprises can share the experience of intelligent manufacturing, continuously improve product quality, Reduce operating costs, deep integration of end customers and manufacturers can also beachieved, on the basis of big data analysis, the global enterprises can adjust their business decisions in real time, and can accurately push the product information to the customers to improve customer satisfaction and shopping experience, which greatly improves the efficiency of the supply chain, reduces the purchase cost of end-user products, and reduces the operating costs of enterprises, andhas great social benefits.
Owner:福建宏泰智能工业互联网有限公司

New-energy entire car controller integrated with transmission case control function

The invention provides a new-energy entire car controller integrated with a transmission case control function. The controller is integrated with the transmission case control function, i.e., an original entire car control function and a transmission case control function are integrated in the entire car controller, so that a special TCU (transmission control unit) is not needed any more; analog input, on-off input and frequency input are connected with respective sensors; a power-driven part and a motor-driven part are connected with respective actuators; the components are connected together with an internal bus on a controller circuit board by virtue of internal connecting wires so as to form a complete controller hardware circuit. New-energy entire car controller software integrated with the transmission case control function is realized by virtue of an entire car control algorithm and a transmission case control algorithm. The new-energy entire car controller can be used for shortening the development cycle, lowering the development cost, reducing automobile parts such as a controller, an auxiliary connector and wire harnesses and lowering the purchase costs of the parts.
Owner:BEIJING JIUZHOU HUAHAI TECH

Consolidated procurement management system and method

A consolidated procurement management system includes a server (2), and a plurality of buyer systems (4) and a plurality of supplier systems (5) connected to the server through a network (3). The server includes: a material requirement information receipt module (21) for receiving material requirement information from the buyer systems; a material requirement consolidation module (22) for calculating a total requirement quantity for each material, and generating consolidated material requirement data; a quote receipt module (25) for receiving quotes from the supplier systems; a purchase module (26) for determining one or more winning suppliers from a plurality of suppliers participating in price negotiations, and for generating purchase orders; and a purchase cost allocation module (29) for calculating purchase costs and expenses for each buyer, and for generating purchase cost allocation information. A related consolidated procurement management method is also disclosed.
Owner:HON HAI PRECISION IND CO LTD

Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile

The invention belongs to the technical field of building materials, and particularly relates to a non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as an exciting agent, and a preparation method of the non-steam autoclaved high performance concrete tube pile. The concrete tube pile is prepared from ordinary Portland cement, mineral additives, the calcium silicate hydrate seed powder, sand, stones, a water reducing agent and an antifoaming agent. According to the non-steam autoclaved high performance concrete tube pile and the preparation method thereof disclosed by the invention, the calcium silicate hydrate seed powder is used as the exciting agent, so that a nucleation potential barrier of cement hydration can be reduced, besides, preferential adsorption nucleation is performed on reactant ions, the cement hydration is promoted, the pozzolanic effect of the mineral additives can also be advanced, the early strength of the concrete is improved from many aspects, and the non-steam autoclaved purpose is realized. According to the non-steam autoclaved high performance concrete tube pile and the preparation method thereof disclosed by the invention, the defects of low early strength, complex production technology, high energy consumption and the like of a conventional high performance concrete tube pile can be overcome, the equipment purchase cost and the equipment maintenance cost can also be reduced, and good economic and social benefits can be achieved.
Owner:TONGJI UNIV

Testing a mobile application

The present invention discloses a manager, a test agent installed on a personal mobile device and methods thereof. The manager comprises: a first network connection module configured to establish a connection with the mobile device through Internet, the mobile device being installed with a test agent for performing test operation on a mobile application on the mobile device; and a security module configured to communicate with the test agent through the first network connection module to make the test agent perform security control on the mobile device. According to the manager, mobile devices, and methods of the present invention, the cost such as maintenance cost of the data center and purchase cost of mobile devices can be reduced dramatically. It is not necessary to analyze market demands since mobile devices owned by the users of the mobile devices are the mobile devices that need to be tested by the tester.
Owner:KYNDRYL INC

GNSS multi-frequency satellite navigation antenna

The invention discloses a GNSS multi-frequency satellite navigation antenna which mainly solves the problem that an existing four-arm helical antenna is narrow in working frequency band and low in gain. The GNSS multi-frequency satellite navigation antenna comprises a frustum, a flexible medium covering the surface of the frustum, a mixed radiation arm printed on the surface of the flexible medium, a connector and a medium plate connected to the bottom of the frustum. A lower layer of the medium plate is provided with a power divider, an upper layer of the medium plate is provided with a radiation floor formed by a metal layer, and a radiator is connected with the power divider through a second connector. The antenna comprises all frequency bands (1.16-1.28GHz and 1.55-1.61GHz) of a GNSS, the number of global navigation satellite antennas can be reduced, and operator's purchase cost is reduced; the antenna simultaneously has the advantages that the frequency band is larger than 5.4dB, signal strength in the same direction and at the same distance can still be kept while power of a transmitter can be reduced, navigation precision is improved, noise jamming near the horizontal plane is reduced, and operation efficiency is improved.
Owner:XIDIAN UNIV

Multi-target multi-constrained medium and long term power purchase decision-making method

ActiveCN103337039ASolve problems that are difficult to consider in a unified optimizationSolving Quantitative DifficultiesData processing applicationsElectricity pricePollution
The invention provides a multi-target multi-constrained medium and long term power purchase decision-making method, which comprises the steps of establishing a target function, establishing a constraint model; carrying out optimization on a single target, and carrying out joint optimization on multiple targets. The decision-making method provided by the invention carries out optimization target modeling on various requirements comprising minimum power generation cost of a set, minimum power purchase cost, minimum pollution discharge cost and the like in power purchase, carries out optimization constraint modeling on various indicator requirements comprising energy burning policies, coal burning stock, water incoming conditions, transaction electricity price, transaction scale, energy conservation and emission reduction, coal consumption and the like in practical production operations and transaction organizations, and carries out multi-target multi-constrained joint optimization according to an optimum value degeneration method. The multi-target multi-constrained medium and long term power purchase decision-making method is a decision-making auxiliary tool for purchase of a grid company, and provides effective technical support for the grid company to save the cost and increase earnings.
Owner:STATE GRID CORP OF CHINA +1

Wall-mountable television base

The invention provides a wall-mountable television base. The wall-mountable television base includes a base, a base support, a wall-mounting frame and a wall-mounting wall fixing piece, wherein the base is connected with the base support in a hinged manner, the base support is connected with the back of a display screen in a sliding manner in the vertical direction, and the wall-mounting frame is fixed on the back of the display screen and hooked on the wall-mounting wall fixing piece. Through the adjustable hinge angle of the base and the base support, the base can be stored in a concealed manner when a television is mounted on the wall; and the wall-mounting frame can be hooked on the wall-mounting wall fixing piece, so that the television can be mounted on the wall. Therefore, the base and the wall-mounting function can be switched for use. The wall-mounting structure has a high strength and stability, is simple to operate and can simplify the mounting for the user and reduce the purchase cost of the user.
Owner:TPV DISPLAY TECH (XIAMEN) CO LTD

Digital right protection method based on virus detection and watermark embedding

InactiveCN101945093AEnsure safetyHave the ability to prevent virusesPlatform integrity maintainanceTransmissionVirus detectionLicense
The invention discloses a digital right protection method based on virus detection and watermark embedding, comprising the following steps of carrying out virus detection on an uploaded media works file; embedding an owner user information watermark and a platform mark watermark into the media works file; generating a license after a consumer pays the purchase cost; embedding consumer user information and PC information into the media works file in a mode of the watermark; carrying out binary transformation on the media works file with the owner user information watermark, the platform mark watermark and the consumer user information-PC information watermark; encapsulating the license and the media works file after transformation to download; when a digital certificate of the consumer is valid or a only physic mark of a current PC is correct, carrying out decapsulation and format transformation on the downloaded media works file according to the use jurisdiction stipulated by the license of the downloaded media works to play. The method can avoid virus entry and off-line diffusion and can realize diffusion channel tracing.
Owner:WUHAN UNIV OF TECH

Frequency modulation auxiliary service transaction clearing method in transitional power market

The invention discloses a frequency modulation auxiliary service transaction clearing method in transitional power market. The method comprises the steps that 1) the range of generator sets participating in power market optimal dispatching in a power grid is determined; 2) an independent frequency modulation transaction clearing model aiming at the minimum frequency modulation purchase cost is established; 3) a constraint in the independent frequency modulation transaction clearing model in the step 2) is extended; 4) a non-linear factor in an assessment model is linearized to acquire the linear model of power grid frequency modulation auxiliary service transaction clearing; and 5) a mixed integer linear programming method is used to solve the clearance model. The method provided by the invention has the advantages that on the basis of optimal frequency modulation service invoking, frequency modulation capacity assignment and power grid operation safety are jointly optimized; refined frequency modulation service invoking is realized under the condition of safe operation of the power grid; frequency modulation auxiliary service clearing is carried out based on the quotation of various market members; and safe operation of a power system is effectively guaranteed.
Owner:NARI TECH CO LTD +4

Aircraft and control method thereof

The invention discloses an aircraft and a control method thereof. The method comprises the steps that images are collected through a binocular camera; deep processing is performed on the images collected by the binocular camera, and deep images are obtained; according to parameters of the deep images and the binocular camera, the safe distance between the aircraft and a person is controlled; gestures of persons in the deep images are recognized, a control instruction of the aircraft is obtained according to the recognized gestures of the persons; within the safe distance, the aircraft is controlled according to the control instruction of the aircraft. According to the aircraft and the control method thereof, the aircraft can be controlled through the gestures of the persons, a user can conveniently use the aircraft, the user purchase cost is lowered, the aircraft control enjoyment can be improved, and interaction between persons and the aircraft is enhanced.
Owner:EHANG INTELLIGENT EQUIP GUANGZHOU CO LTD

Greening planting technology for expressway in arid area of desert

InactiveCN102499004AAdequate supplyGrow fastForestryHorticulturePinus contortaAmorpha fruticosa
The invention belongs to a highway greening cultivation technology and in particular to a greening planting technology for an expressway in the arid area of desert. The technology is characterized by comprising the following steps: selecting corresponding arbor, shrub and grass according to the local topography, landform, climate characteristics, vegetation condition and common nursery stock varieties, and performing planting time selection, planting preparation, planting of the arbor, shrub and grass, vegetation maintenance, daily nursing and the like, wherein the arbor is selected from one or several of poplar, Saliz matsudana or pinus sylvestris; the shrub is selected from two or more of Amorpha fruticosa, Sabina vulgaris, caragana microphylla and hedysarum scoparium; and the grass is selected from one or several of medicago sativa, Astragalus adsurgens and Artemisia songarica Schrenk. According to the invention, the time from nursery stock planting to large-scale greening is basically consistent with the time from highway construction to operation, and the construction period is relatively reasonable; the selected nursery stock is common nursery stock which has sufficient supply source, is drought-resistant, easily survives and grows quickly; and the purchase cost and maintenance cost are low.
Owner:CHINA RAILWAY HI TECH IND CORP LTD +1
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