| 一次消谐器不可以长期接地开口三角绕组 |
| 添加时间：2019/2/14 16:41:06 浏览次数： |
| 一次消谐器不可以长期接地开口三角绕组，这是因为当电网发生持续性单相接地时，电压互感器开口三角绕组两端会出现100V的工频零序电压，这就要求一次消谐器应该有足够大的容量。同时，电压互感器一次侧在单相接地期间也流过很大电流，所以在中性点不接地电网中，不允许阻值过小的电阻长期接在开口三角绕组上，以免电压互感器过热而烧毁。 The primary harmonic eliminator can not be grounded with open triangular windings for a long time. This is because when single-phase grounding occurs in the power grid, there will be 100V zero-sequence voltage at both ends of the open triangular windings of voltage transformers, which requires that the primary harmozhipin.07858.net tongdiaow.71ix.com xiaoduqi.71ix.comsuliaodai.37ix.com.cn jianchajing.37ix.com.cntangshan.75ix.cnnic eliminator should have sufficient capacity. At the same time, the primary side of the voltage transformer also flows a lot of current during single-phase grounding, so in the neutral ungrounded power grid, it is not allowed that the resistance with too small resistance value is connected to the open triangular winding for a long time, so as to avoid the overheating and burning of the voltage transformer. |
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