User-oriented multi-type distributed power integrated networking system and control method
A distributed power supply, user-oriented technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as grid voltage fluctuations, output power changes, voltage fluctuations, etc., to achieve economic, green development, and improve overall availability. control effect
Active Publication Date: 2020-05-22
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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Problems solved by technology
Under normal operating conditions, if the environment changes suddenly, such as sudden wind intensification or sudden drop, dark clouds drifting over the photovoltaic panels, etc., the output power will also change, which will cause voltage fluctuations and flicker in the grid
At present, my country's research on distributed power generation has made breakthrough progress, but the grid-connected operation of distributed power generation has brought a series of problems to be solved
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0035] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or c...
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The invention discloses a user-oriented integrated networking system and control method for multi-type distributed power sources. By respectively connecting AC-DC distributed power sources and AC-DC loads to the AC link and DC link of a power electronic transformer, the multi-type power supply is finally completed. The modular integrated network of distributed power sources can be connected to the high-voltage system of the external power grid. The invention not only helps to realize the rapid integration and networking of distributed power sources on the user side, lowers the technical threshold for the operation and maintenance of distributed power sources, but also significantly improves the controllability of distributed power sources and realizes the active participation of distributed power sources in large power grids. Operation scheduling, enhancing the power quality of power supply in the distribution network, increasing the utilization hours of distributed power sources, and realizing the economic and green development of the power grid.
Description
technical field [0001] The invention relates to the technical field of distributed power generation and grid connection, in particular to a user-oriented multi-type distributed power integrated networking system and control method. Background technique [0002] At present, coal and petroleum-based conventional energy sources provide electricity for more than 90% of the world's electrical loads. This conventional energy is characterized by centralized power generation, long-distance power transmission, and the formation of a large grid interconnection. However, its resources are limited and the pollution of the atmosphere is becoming more and more serious, which has caused global energy shortage and environmental degradation. At the same time, large power grids have disadvantages such as single power supply mode, inability to flexibly track load changes, and local accidents are easy to spread and cause large-scale power outages. Using clean and renewable energy represented b...
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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/381H02J3/382
Inventor于芃程艳苏建军孙树敏张用刘兴华左新斌陈素红李笋石鑫李广磊赵鹏王士柏王玥娇张兴友滕玮
OwnerELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY