摘要
笔者提出的基于冲击电流的GIS导电杆的回路电阻测量方法,利用超级电容器与标准电阻和被测元件构成的非振荡二阶电路,能产生千安级的冲击放电电流;取冲击电流峰值时刻的导电杆电压降和峰值电流,求得GIS导电杆的回路电阻,以消除被测GIS导电杆感抗对测量结果的影响。笔者通过仿真计算、实验室测试验证了方法的可行性和准确性。现场测试中冲击电流法和直流压降法的测试结果对比显示,基于冲击电流的GIS导电杆的回路电阻的测量方法的更能反映设备实际的回路电阻值。
In the proposed measurement, a second-order non-oscillating circuit composed of a super capacitor, a standard resistance and tested components discharges kA-level impulse current. The peak current and the corresponding voltage drop of the GIS conductor pole are used to get the loop resistance in order to eliminate the impact of the inductance on the measurement result. Simulation, laboratory test and field test verify the feasibility and accuracy of the proposed method for measuring the loop resistance of GIS conductor pole via impulse current. In the field test, the proposed method gives more accurate loop resistance, compared to the DC voltage drop method.
出处
《高压电器》
CAS
CSCD
北大核心
2013年第10期46-50,共5页
High Voltage Apparatus
关键词
回路电阻
GIS导电杆
冲击电流
超级电容
loop resistance
GIS conductor pole
impulse current
super capacitor
