变电站计量表电压回路接线改进

在双母线接线的变电站进行改造过程中,发现有些电能计量表计(以下简称计量表)电压回路存在缺陷,当双母线分列运行时,计量表电压切换缺乏选择性,降低了计量装置的准确性。针对这一问题,笔者对原电压回路接线及工作原理作了认真分析,对原接线方式进行了改进设计,并提出了两种改进方案。采用改进的接线方案,在一次设备运行方式变更时,计量装置电压能够正常切换,保证计量装置在各种运行方式下准确计量。

The Improvement Of Voltage Loop Wiring in Substation Electric Ehergy Meter

In the upgrading of the substation which has double-bus wiring,we discovered that there are some shortcomings in voltage circuit of electricity meters(hereinafter referred meter).We discover that the voltage of meter lack selectivity in switch and the accuracy of the meter is reduced,When the double-bus run respectively.In response to this situation,this paper gives a careful analysis in voltage circuit wiring and original principles,two new designs of wiring way are given to make some improvement.In the use of improved wiring way,meter can switch normally when the operation changes and makes accurate measurement.