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A Power Supply Restoration Method of Distribution Network Based on Intelligent Soft Switching

A technology of intelligent soft switching and power supply recovery, which is applied to electrical components, circuit devices, AC network circuits, etc., and can solve problems such as power supply recovery of distribution networks

Active Publication Date: 2018-05-01
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is an urgent need for a distribution network power supply restoration method based on intelligent soft switching to solve the problem of distribution network power supply restoration under the premise of ensuring the voltage level after fault isolation

Method used

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  • A Power Supply Restoration Method of Distribution Network Based on Intelligent Soft Switching
  • A Power Supply Restoration Method of Distribution Network Based on Intelligent Soft Switching
  • A Power Supply Restoration Method of Distribution Network Based on Intelligent Soft Switching

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Embodiment Construction

[0030] A method for restoring power supply of a distribution network based on an intelligent soft switch of the present invention will be described in detail below in combination with embodiments and drawings.

[0031] A method for restoring power supply of distribution network based on intelligent soft switch of the present invention, such as figure 1 shown, including the following steps:

[0032] 1) According to the selected power distribution system, input line parameters, load level, network topology connection relationship, system operating voltage level and branch current limit, intelligent soft switch access position, capacity and loss coefficient, system fault position, reference voltage and the initial value of the reference power;

[0033] For the embodiment of the present invention, first input the impedance value of the line element in the IEEE 33 node system, the active power and reactive power of the load element, the connection relationship of the network topol...

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Abstract

Provided is a power supply restoration method for a power distribution network based on an intelligent soft switch. The method comprises: according to a selected power distribution system, inputting a connection relationship among a line parameter, a load level, and a network topology, a system operating voltage level and branch current limit, an intelligent soft switch access position, capacity and loss coefficient, a system fault location, and a reference voltage and a reference power initial value; according to a provided power distribution system structure and parameter, establishing a mathematic model of power supply restoration for the power distribution network based on the intelligent soft switch, including: setting a maximum power supply restoration active load as an objective function, and taking into account the system load flow constraints, operating voltage constraints, branch current constraints and intelligent soft-switching operation constraints; solving the obtained mathematical model by using a primal-dual interior point method; outputting solve results: an objective function value, a voltage amplitude and a phase angle of each node, a restoration load coefficient of each node, and an intelligent soft switch transmission power value. The method provided by the present invention avoids the hidden danger caused by switch operations, is more safe and reliable, and comprehensively improves the self-healing ability of the power distribution network fault.

Description

technical field [0001] The invention relates to a power supply recovery method of a distribution network. In particular, it relates to a power supply restoration method for distribution network based on intelligent soft switching. Background technique [0002] As a part of the power system that directly faces users, the distribution network has the closest connection with users and the most direct impact on users. Compared with the traditional distribution network, the smart distribution network has changed from the original single power distribution role to a new power exchange system integrating power collection, transmission, storage and distribution. Not only will the primary side use distributed power sources and energy storage devices And DFACTS and other equipment to meet the operating needs of the system, and advanced distribution automation technology will be used on the secondary side to improve the information communication capability and intelligence level of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 董旭柱吴争荣刘志文陈立明李鹏宋关羽
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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