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两起百万机组发电机并网前励磁投入后即有定子电流现象的原因分析

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大型发电机并网前的参数监视是保障发电机变压器组安全运行的基础.本文通过对两次百万机组发电机并网前出现定子电流和负序电流的现象进行分析,找出两次事件发生的不同原因,并提出应对措施,以供大型发电机组并网操作时参考.
Causal Analysis of Two Stator Current Occurrences After Excitation Input Prior to Megawatt Generators' Grid Connection
Prior to the large generators' grid connection,parameters monitoring is the basis of guaranteeing the safe operation of the generator transformer set.This paper conducts the causal analysis of two stator current and negative sequence current occurrences before megawatt generators' grid connection,and put forward the countermeasures,with a view to providing the reference for the parallel operation of large generators.

generatorgrid connectionexcitation systemstator currentnegative sequence current

谢方喜、顾玉田、贾波、李京

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徐州华润电力有限公司,江苏徐州221000

发电机 并网 励磁系统 定子电流 负序电流

2014

华东电力
华东电力试验研究院有限公司

华东电力

CSTPCD
影响因子:0.551
ISSN:1001-9529
年,卷(期):2014.42(9)