Distributed micro-grid black-start control system and method based on photovoltaic and energy storage

A control system and black start technology, applied in photovoltaic power generation, energy storage, AC network load balancing, etc., to achieve reasonable structural design, improve safety and stability, and improve operating economy and stability

Active Publication Date: 2015-09-02
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, at present there is no reasonable structural design, black start of distributed power generation, reduction of power outage area, power outage time and recovery time in case of power grid

Method used

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  • Distributed micro-grid black-start control system and method based on photovoltaic and energy storage

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0023] Example.

[0024] see figure 1 In this embodiment, the distributed micro-grid black start control system based on photovoltaic and energy storage includes a photovoltaic array interface 1, a photovoltaic DC converter 2, a photovoltaic grid-connected controller 3, an energy storage charging controller 4, and a distributed power supply DC power interface 5. Energy storage converter controller 6, battery DC access controller 7, distributed power supply AC power interface 8, energy storage process controller 9, battery 10, DC power supply converter 11, battery DC controller 12, black Start the control system host 13, the external AC power interface 14 and the external DC power interface 15.

[0025] In this emb...

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Abstract

The invention relates to a distributed micro-grid black-start control system and method based on photovoltaic and energy storage. At present, a distributed micro-grid black-start control system and method based on photovoltaic and energy storage, which are reasonable in structural design, do not exist. The black-start control system is characterized in that a photovoltaic array interface, a photovoltaic DC converter, a photovoltaic grid connected controller and an AC bus are connected in sequence through a cable, the photovoltaic DC converter, an energy storage charging controller and a storage battery are connected in sequence through a cable, and an energy storage current transformer controller and a storage battery DC controller are connected through a communication cable. The black-start control method is characterized in that A, an AC bus system provides power; B, a DC bus system provides power; and C, black-start of a distributed power supply is performed. The control system is reasonable in structural design, black-start of a distributed power supply can be achieved, the power failure area, the power failure time and the recovery time once a power grid breaks down can be reduced, and the safety stability of regional power grids and a large power grid can be improved.

Description

technical field [0001] The invention relates to a distributed micro-grid black start control system and method based on photovoltaic and energy storage, in particular to the application and distributed micro-grid system and distributed energy station system. Background technique [0002] Based on distributed power generation technology, distributed microgrid organizes distributed power sources (DR) in a certain area, and combines end-user power quality management and energy cascade utilization technology to form a small, modular and decentralized energy supply network. The microgrid is an important part of the power grid, which can realize the joint operation of the internal power supply and the power load, and realize the connection between the microgrid and the main grid through the microgrid grid-connected switch, realize the coordinated control of the microgrid and the main grid, and can smoothly connect Connected to the main power grid and run independently, fully meeti...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32
CPCY02E10/56Y02E70/30
Inventor 张钟平周宇昊张志勇施行之王思文王勇刘丽丽郑梦超郑一昂
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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