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Insulative matching method for intelligent power distribution system based on flexible direct current

A flexible DC power distribution and intelligent power distribution technology, which is applied in the direction of AC network circuits, circuit devices, and electrical digital data processing, can solve the problems of insulation coordination that have not been reported yet, and achieve the effect of promoting development and improving work efficiency

Active Publication Date: 2015-04-29
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development of flexible DC distribution network is still in its infancy, and the research on its insulation coordination has not been reported, and special research is needed

Method used

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  • Insulative matching method for intelligent power distribution system based on flexible direct current
  • Insulative matching method for intelligent power distribution system based on flexible direct current
  • Insulative matching method for intelligent power distribution system based on flexible direct current

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Embodiment

[0048] Such as figure 2 As shown, an insulation coordination method of an intelligent power distribution system based on flexible direct current, the intelligent power distribution system includes sub-modules, including system analysis steps, arrester configuration steps, overvoltage calculation steps, and insulation coordination steps;

[0049] Such as figure 1 , image 3 As shown, the system analysis steps described in S1 include:

[0050] S1.1 Determine the topology of the system according to the functions of the flexible DC power distribution system and the access sub-modules, figure 1 1, 2, 3, and 4 in represent the lines between substation 1 and substation 2 respectively;

[0051] The flexible DC power distribution system has the functions of improving the power supply reliability of the distribution network, improving the power quality of the distribution network, and facilitating the access of distributed power sources. Therefore, the DC side of the system is conne...

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Abstract

The invention discloses an insulative matching method for an intelligent power distribution system based on a flexible direct current. The topological structure, the mode of operation and the mode of malfunctions of the intelligent power distribution system based on the flexible direct current are comprehensively analyzed by the following steps: carrying out system analysis; configuring a lightning arrestor; carrying out simulating calculation of an overvoltage; setting insulative match. On the basis, the lightning arrestor is initially configured for the system and simulating calculation of overvoltage is conducted by establishing an inner overvoltage calculation model and a lightning overvoltage calculation model of the system so as to adjust the configuration of the lightning arrestor and the accomplish insulative match of equipment of the system, so that the system cost is the minimum while the system safely and stably operates. The scheme can be used for guiding related technical staff to efficiently carrying out insulative match analysis of a flexible direct current power distribution system.

Description

technical field [0001] The invention relates to the field of insulation coordination of flexible DC intelligent power distribution, in particular to an insulation coordination method of an intelligent power distribution system based on flexible DC. Background technique [0002] Insulation coordination is to comprehensively consider the various voltages (working voltage and overvoltage) that electrical equipment may withstand in the power system, the characteristics of protection devices, and the tolerance characteristics of equipment insulation to various applied voltages, and reasonably determine the necessary insulation level of equipment. In order to make the cost of equipment, maintenance costs and accident losses caused by equipment insulation failures, to achieve the highest overall benefits in terms of economy and safe operation. [0003] The insulation coordination design of the power system is based on the configuration of conventional protection devices, the simula...

Claims

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Application Information

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IPC IPC(8): H02J3/36G06F17/50
CPCH02J3/36H02J2203/20Y02E60/60
Inventor 韩永霞何秋萍赵宇明姚森敬
Owner SOUTH CHINA UNIV OF TECH
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