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Method for solving feeder line fault by using power electronic device SOP

A power electronic device and feeder technology, which is applied in the application field of power electronic equipment in the distribution network, can solve the problems of not considering the reliability of the user's power supply, and achieve the effect of improving power supply reliability requirements, efficient calculation efficiency, and improving accuracy

Active Publication Date: 2020-01-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Factors such as the volatility of distributed power sources and the diversity of loads are considered, but the reliability of power supply for users is not considered

Method used

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  • Method for solving feeder line fault by using power electronic device SOP
  • Method for solving feeder line fault by using power electronic device SOP
  • Method for solving feeder line fault by using power electronic device SOP

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Embodiment Construction

[0014] The invention proposes a method for solving a feeder fault by using a power electronic device SOP. This method is aimed at the distribution network area with important users, and is oriented to the needs of multi-terminal flexible interconnection. It makes full use of the uninterrupted power transfer capability of SOP, and aims to improve the operation economy of the distribution network and the power supply reliability of important users. Carry out rational planning, set up the SOP double-layer programming model; and the SOP eight-state reliability model; the present invention will be further described below in conjunction with the accompanying drawings.

[0015] figure 1 Shown is the physical structure of MMC and its sub-modules;

[0016] The flexible multi-state switch (soft open points, SOP) is usually installed at the traditional tie switch. It is composed of fully controlled power electronic devices. Three MMCs (modular multilevel converters) are connected in par...

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PUM

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Abstract

The invention discloses a method for solving a feeder line fault by using SOP, and belongs to the field of application of power electronic equipment in a power distribution network. According to the method, aiming at a power distribution network area containing important users, the uninterrupted transfer capacity of the SOP is fully utilized for meeting the multi-terminal flexible interconnectionrequirement, with the goal of improving the operation economy of the power distribution network and the power supply reliability of the important users, the SOP is reasonably planned and an SOP double-layer planning model is established; and the SOP is reasonably planned through the SOP eight-state reliability model, so that the purpose of improving the operation economy of the power distributionnetwork and the power supply reliability of important users is achieved. The power supply reliability requirement of a user is improved, the effect of SOP power flow optimization is achieved, the uninterrupted power transfer capacity, the fault recovery capacity and the system self-healing capacity of the system are achieved, and application and popularization of the SOP are facilitated.

Description

technical field [0001] The invention belongs to the field of application of power electronic equipment in distribution networks, and in particular relates to a method for solving feeder faults by using a power electronic device SOP. Background technique [0002] The distribution network is the last link of the power system from production to users. It is closely connected with users and directly affects the power quality and power supply reliability of users. The International Conference on Large Power Grids (CIGRE) proposed the concept of active distribution network in 2008, aiming to improve user service quality and management performance indicators. Optimize the operation mode of the distribution network, and improve the operation economy of the distribution network by strengthening the flexible control of the distribution network. In recent years, the demand for power quality and power supply reliability of important users has been continuously increasing. In order to r...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/46
CPCH02J3/1857H02J3/46Y02E40/30
Inventor 刘文霞王晗钰毛宇洋王志强
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)