10kV高压计量错接线检查实用方法探讨

Discussion on the Practical Method of False Wiring Inspection of 10 kV High-voltage Metering

10 kV高压计量错接线检查既是用电检查的一个难点,也是技能竟赛的一个考点。传统的检查方法主要是相位伏安法,其次是相量图示法。虽然仪器的操作比较简单,但是根据实测的相位角或相量图分析判断接线状态却并非易事。为了避开分析相位角或相量图难点,提出用等电位法确认表尾电压线,用等电流法(或最小电压法)确认表尾电流线的思路,并结合实际探讨检查错接线的实用方法,对用电检查人员和技能竟赛者都有一定实用价值。

Inspection on false wiring of 10 kV high-voltage metering presents a challenging task for electric inspectors and is a crucial aspect of skill competitions.The conventional inspection method primarily involves phase voltammetry,followed by phasor diagram.While the instrument operation is relatively straightforward,determining the wiring status based on the measured phase angle or phasor diagram analysis is not always easy.To overcome the difficulties in analyzing the phase angle or phasor diagram,this paper proposes an alternative method that utilizes the equipotential method to confirm the voltage line at the end of the meter and the equal current method(or minimum voltage method)to confirm the current line at the end of the meter.Moreover,this paper discusses the practical method of checking false wiring in consideration of actual conditions,and has certain practical value for both electric inspectors and skill contestants alike.