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Coordination-consistency based distributed power supply control method and system for power distribution network

A technology of distributed power supply and power distribution network, which is applied in the direction of single-network parallel feeding arrangement, etc., and can solve problems such as unavailable

Active Publication Date: 2016-02-03
WUHAN UNIV
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  • Abstract
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  • Coordination-consistency based distributed power supply control method and system for power distribution network
  • Coordination-consistency based distributed power supply control method and system for power distribution network
  • Coordination-consistency based distributed power supply control method and system for power distribution network

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[0043] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be introduced below in conjunction with the embodiments of the present invention and the accompanying drawings.

[0044] Such as figure 1 As shown, in the application scenario of a distributed power supply control method based on coordination and consistency provided by the present invention, key nodes in the power distribution network, such as the entrance of the feeder, the branch point of the main feeder, etc., are installed with voltage monitoring devices 1. Voltage monitoring device 2, ..., monitoring device I; these monitoring devices can collect the effective value U of the connected node voltage 1 ,U 2 ,...,U I , The voltage monitoring device can adopt existing mature products. Distributed power generation 1, distributed power generation 2, ..., distributed power generation J are also c...

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Abstract

The invention discloses a coordination-consistency based distributed power supply control method and system for a power distribution network. The control method comprises the steps of extracting reactive power required to be injected to the power distribution network, forming a distributed power supply set for achieving the purpose of injecting the reactive power to the power distribution network, forming a coordination-consistency controlled and reactive-power-decomposed matrix, calculating the reactive power injection setting value of each distributed power supply in the set, transmitting the reactive power injection setting value to the corresponding distributed power supply by a voltage monitoring apparatus through a bidirectional communication circuit; and enabling each distributed power supply to generate the corresponding reactive power to be injected to the power distribution network according to the reactive power injection setting value so as to enable the sum of the injected reactive power to satisfy demands. The control method does not require a central control unit; and the distributed power supply can automatically regulate the output reactive power to effectively maintain the node voltage level of the power distribution network, provide the power supply quality and the power supply reliability, take full advantage of the distributed power supply in providing the auxiliary service to the power distribution network, further improve the service efficiency of the distributed power supply, and promote the development and the utilization of the distributed power supply.

Description

technical field [0001] The invention belongs to the field of power distribution operation, and in particular relates to a distributed power supply control technical solution based on coordination and consistency. Background technique [0002] Voltage quality is one of the most concerned indicators of distribution network operation. In the current distribution network, there is no means to comprehensively monitor the voltage of each node. Voltage regulation is carried out in substations that supply power to the distribution network, or by various The loads are compensated with reactive capacitance according to the voltage of the respective connection point. These voltage regulation measures are usually difficult to take into account the overall voltage level, and there is a lack of coordinated control methods and implementation means. [0003] It is an inevitable trend in the future power grid development that a large number of distributed power sources with clean and renewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
Inventor 乐健柳永妍叶曦刘开培毛涛
Owner WUHAN UNIV
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