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Magnetic control type controllable shunt reactor

A reactor and parallel connection technology, which is applied in the field of magnetically controlled controllable shunt reactors, can solve the problems of magnetically controlled controllable shunt reactors not operating normally, system safety and stability, damage to the excitation system, etc., to avoid damage Electrical equipment, improving reliability and safety, and ensuring the effect of reactive power balance

Pending Publication Date: 2018-06-29
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The withstand voltage of the power electronic devices in the rectifier is much lower than that of the control winding. If there is a fault or lightning, the operation shock is transmitted to the DC side, it will cause damage to the excitation system, and the magnetically controlled controllable shunt reactor cannot operate normally. Harm to the safe and stable operation of the system

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  • Magnetic control type controllable shunt reactor
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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Magnetic control type controllable shunt reactor as attached figure 1 As shown, including the main body, excitation system and rectifier output protection module, the rectifier transformer and rectifier constitute the excitation system. The body includes high-voltage side windings, control windings and compensation windings. The high-voltage side winding is the winding directly connected to the system of the magnetic control type controllable shunt reactor. The control winding is connected to the DC side of the excitation system and powered by a DC power supply. By adjusting the DC power supply voltage and the DC current in the winding to change the magnetic saturation of the core of the magnetically controlled shunt reactor, the output capacity of the reactor can be smoothly changed. . The excitation system is an independent rectifier unit, and eac...

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Abstract

The invention provides a magnetic control type controllable shunt reactor, which comprises a body and an excitation system, wherein the body is of a three-winding structure and comprises a high-voltage side winding, a control winding and a compensation winding; the excitation system comprises a self-excitation system provided with an alternating current side connected with the compensation windingand an external excitation system connected with a station power supply, the excitation system further comprises a rectifier output protection module, and the rectifier output protection module is connected with a direct current bus of the rectifier output; and the rectifier output protection module comprises a balancing resistor, a measuring resistor and a lightning arrester. The technical scheme provided by the invention can ensure the safety of rectifying equipment, so that electrical equipment are avoided from being damaged by overvoltage at the rectifier output side during a failure or impact, the operation reliability and safety of the magnetic control type controllable shunt reactor are improved, and the magnetic control type controllable shunt reactor is guaranteed to play a roleof reactive power balancing and voltage stabilizing in the system.

Description

technical field [0001] The invention belongs to the field of power system equipment protection, and in particular relates to a magnetic control type controllable shunt reactor. Background technique [0002] Controllable shunt reactor is one of the effective means to improve the flexibility of power system regulation. Its main function is to solve the contradiction between overvoltage limitation and reactive power compensation of long-distance heavy-duty lines, improve voltage stability level and transient operation limit, reduce It is an important tool to realize the efficient and economical operation of ultra-high voltage and ultra-high voltage transmission channels. The most concentrated application fields of controllable shunt reactors include: EHV / UHV long-distance heavy-duty lines, wind power centralized transmission channels, hydropower transmission channels and EHV / UHV compact lines, etc. [0003] The magnetically controlled shunt reactor changes the saturation of th...

Claims

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Application Information

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IPC IPC(8): H02P13/00H02J3/18H02J3/01H02H9/04
CPCH02H9/045H02J3/01H02J3/1821H02P13/00Y02E40/30Y02E40/40
Inventor 刘洋段全新李兰芳刘红恩盖振宇李涛赵刚
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD