基于UN5000励磁起机过电压研究与优化

Research and Optimization of Overvoltage Based on Un5000 Excitation Starter

基于国内某电厂7号1000 MW机组UN5000起励时出现的过电压造成过激磁保护报警和励磁机短路事件进行分析,通过逻辑优化解决机组起励时出现的过电压问题。该优化逻辑适用于同型号励磁系统的电厂,为使用UN5000励磁系统机组起励时出现过电压现象提供解决思路。

Aiming at the over-voltage of UN5000 of a 1000 MW unit in a domestic power plant#7,which caused over-excitation protection alarm and exciter short-circuit event,this paper analyzes and makes targeted research,and finally solves the over-voltage problem during unit excitation through logic optimization.The optimization logic is applicable to power plants with the same type of excitation system,and provides a solution to the overvoltage phenomenon when using UN5000 excitation system.