电力工程技术2017，Vol.36Issue(2)：121-126,6.
一种励磁变与离相封闭母线反相解决方案
A Solution for Resversed Phase-sequence of Excitation Transformen and Enclosure Type Isolated-phase Bus
熊良根 1郑嵘 2陈晓明3
作者信息
- 1. 华东电力设计院有限公司, 上海 200063
- 2. 博耳能源江苏有限公司,江苏 无锡 214000
- 3. 特变电工南京智能电气有限公司,江苏 南京 211112
- 折叠
摘要
Abstract
Excitation transformer as an important component is connerted to the enclosure type isolated-phase bus in the main circuit and branch circuit of generator, in order to reduce the ground fault, phases fault and eliminate steel structure fever.However, the reversed phase-sequence of an excitation transformer and the isolated-phase bus was found in the construction of a power plant, this paper analyses the influences of excitation change current phase, excitation transformer differential protection, excitation regulator, generator rotor earth protection caused by this situation, and proposes two solutions.Considering the convenient of excitation system and relay setting calculation, the second scheme become the first choice.The simulation results meet the requirements of the excitation transformer differential protection, rotor earth protection and the excitation regulator, avoiding re-purchase and install the isolated-phase bus or replace the excitation transformer.关键词
励磁变压器/反相序/离相封母Key words
excitation transformer/reversed phase-sequence/endosure type isolated-phase bus分类
信息技术与安全科学引用本文复制引用
熊良根,郑嵘,陈晓明..一种励磁变与离相封闭母线反相解决方案[J].电力工程技术,2017,36(2):121-126,6.
