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User-oriented multi-type distributed power supply integration networking system and control method

A distributed power supply, user-oriented technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as output power changes, grid voltage fluctuations, voltage fluctuations, etc., to achieve economic and green development, and improve overall reliability controlling effect

Active Publication Date: 2018-04-13
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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Problems solved by technology

[0007] (2) Voltage fluctuation and flicker
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
[0009] (3) Power harmonics and DC bias
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

Method used

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  • User-oriented multi-type distributed power supply integration networking system and control method
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Embodiment Construction

[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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Abstract

The invention discloses a user-oriented multi-type distributed power supply integration networking system and a control method, wherein an alternating current and direct current distributed power supply and an alternating current and direct current load are respectively connected to an alternating current link and a direct current link of an electric power electronic transformer; the modular integration networking of the multi-type distributed power supply is finally completed; and a high-voltage system of an external power grid can be connected. According to the user-oriented multi-type distributed power supply integration networking system and the control method, the rapid integration networking of the distributed power source on the user side is facilitated and the operation and maintenance technical threshold of the distributed power supply is reduced; and meanwhile, the controllability of the distributed power supply is remarkably improved; the distributed power supply can actively participate in the operation scheduling of a large power grid; the power supply power quality of the power distribution network is enhanced; the utilization hours of the distributed power supply canbe increased; and the economic and green development of the power grid can be realized.

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...

Claims

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Application Information

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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
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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