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Adaptive voltage and reactive power control method for active distribution network

A technology of voltage and reactive power control and adaptive voltage, applied in the direction of AC network voltage adjustment, reactive power compensation, electrical components, etc., can solve the problems of high cost and cost, insufficient switching control speed, etc., and achieve effective coordinated control , the effect of improving reliability

Active Publication Date: 2020-12-22
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Specifically, if the problem of voltage and reactive power caused by obvious power flow changes can be solved by switching reactive devices such as capacitors, the switching control speed of reactive devices such as capacitors is not fast enough; Impulsive load changes can be based on power electronic compensators, and the cost and cost of using power electronic compensators is too high

Method used

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  • Adaptive voltage and reactive power control method for active distribution network
  • Adaptive voltage and reactive power control method for active distribution network
  • Adaptive voltage and reactive power control method for active distribution network

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Embodiment Construction

[0067] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0068] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0069] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The present disclosure relates to an active distribution network adaptive voltage reactive power control method, which is used for active power or reactive power control in an active distribution network adaptive voltage reactive power control system. The method comprises the steps that when it is detected that the communication between a NC and an MNC is normal, the system uses centralized voltage reactive power control; when it is detected that the communication between the NC and the MNC is abnormal, the system uses distributed voltage reactive power control. The active distribution networkadaptive voltage reactive power control method of the present disclosure can adaptively select centralized or distributed voltage reactive power control to improve control reliability and realize effective coordinated control of the distribution network. The combination of the centralized voltage reactive power control and the distributed voltage reactive power control can control the distributedgeneration and various reactive devices in the active distribution network under the premise of satisfying the basic voltage constraints, thereby reducing the communication data size and reducing thedimensionality of a control variable.

Description

technical field [0001] The present disclosure relates to the technical field of electric power system automatic control, in particular to an adaptive voltage and reactive power control method of an active distribution network. Background technique [0002] Driven by energy saving, emission reduction and environmental factors, renewable energy is increasingly integrated in the distribution network. Most of the renewable energy, such as rooftop photovoltaics and household wind turbines, are connected to the distribution network in a distributed manner. Due to the relatively high resistance of the line wires in the distribution network, the active power generated by distributed renewable energy Power has a considerable effect on the bus voltage. This brings technical challenges to the voltage / var control (VVC) of distribution network. [0003] At present, in-depth research has been carried out at home and abroad, mainly focusing on energy management and operation optimization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16H02J3/38
CPCH02J3/382H02J3/16Y02E40/30
Inventor 李国武许健张涛邱婷王树威刘娟张玉萍
Owner STATE GRID CORP OF CHINA
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