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Experimental Analysis of the On-site Calibration Technology for±500 kV DCPTs
Author(s): 
Pages: 2856-2862
Year: Issue:  11
Journal: High Voltage Engineering

Abstract: 直流电压互感器是测量直流输电系统电压的重要设备,其测量性能的准确关系到直流输电系统的安全稳定运行.为此,研制了高准确度标准分压器,依照检定规程,在额定电压下对德阳换流站极线I上的直流电压互感器进行了现场校准试验,对试验数据进行分析研究得到以下结果:①直流电压互感器的零点影响准确度,必须进行零点修正;②进行零点修正后,仍不满足0.2级要求:由接口柜A中CH3通道输出信号得到的相对误差在0.81%~0...
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