A method for an electric energy metering system of a grid-connected wind-solar combined power generation system
A technology of electric energy metering system and power generation system, which is applied in the direction of wind power generation, photovoltaic power generation, photovoltaic power station, etc., can solve the problems of unfavorable wind, joint development of light resources, and high project cost, so as to promote rational utilization, accurately measure grid-connected electricity, and save The effect of engineering investment
Active Publication Date: 2020-01-14
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
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Problems solved by technology
Due to the current subsidy prices for the development of wind and solar renewable energy resources by power companies in various places are different, the single utilization method adopts separate measurement and can be used for on-grid electricity prices according to national policies. Since the joint development system shares a grid-connected channel, the accurate measurement of it requires a reasonable distinction between the power generated by wind power and photovoltaic power, and subsidizes according to different power prices. At present, there is no system or method that can solve this problem
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[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0035] like Figure 1-2 , an electric energy metering system of a grid-connected wind-solar combined power generation system in the present invention, comprising a photovoltaic array 1 and a wind power generation array 2, each output end of the photovoltaic array 1 is respectively connected to the input end of the corresponding inverter 3, so The output end of the inverter 3 is communicated with the input end of the box-type transformer 4, each output end of the wind power generation array 2 is connected with the input end of the corresponding box-type transformer 4, and the output end of the box-type transformer 4 It is connected with the input end of the incoming line cabinet 5 of the step-up station, and the output e...
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The present invention disclosed the power metering system and methods of the grid -ranging scenery combined power generation system, including photovoltaic arrays and wind power generation arrays, and the outputs of the photovoltaic arrays are connected to the input terminal of the inverter, respectively.The output terminal is connected to the input terminal of the box -type transformer. The output terminals of the wind power array are connected to the input terminal of the corresponding box transformer, and the output terminal of the box transformer is connected to the input end of the booster station entry cabinet.Connected to the public power grid of the terminal transformer station; there is a supporting power meter and voltage current transformer between the box -type transformers and the inlet cabinet of the voltage stations, the output of the supporting electric energy meter and voltage current intestines of the branch circuit,Terminal connection; the output terminal connection with the output terminal of the end -transmitting power station in the line cabinet, the output terminal of the passing power meter and the voltage current transformer, the output terminal of the collection terminal is connected to the main control server.
Description
technical field [0001] The invention relates to the technical field of electric energy metering, in particular to a method for an electric energy metering system of a grid-connected wind-solar combined power generation system. Background technique [0002] In recent years, under the background of the depletion of traditional fossil energy and the increasingly prominent environmental problems, it has become the general trend to vigorously develop renewable energy such as solar energy and wind power. It has the characteristics of intermittent and fluctuating, and it is difficult for a single wind power or photovoltaic power generation to make up for the above characteristics. In some areas of my country with better lighting conditions and wind energy resources, solar energy and wind energy can complement each other in timing and keep the output power stable. , therefore, it is of great significance to realize large-scale wind-wind combined power generation. [0003] An importan...
Claims
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IPC IPC(8): H02J3/38H02S10/12H02J13/00G01R22/06
CPCH02J3/383H02J3/386H02J13/0006H02S10/12G01R22/063Y04S10/123Y02E10/56Y02E10/76Y02E40/70
Inventor 姚昆赵森郑志强孟强张颖廖源张丽敏王圆圆
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST