摘要
介绍了西门子20 Hz电压注入式100%定子接地保护原理,分析了在调试时接地电流角度补偿与传变电阻对西门子20 Hz电压注入式100%定子接地保护的影响。通过软件调试,对接地电流角度补偿与传变电阻的修正,提高了20 Hz接地保护测量接地电阻的精度,并给出了防止20 Hz电源及电源引出线故障误动的措施。
The fundamental principles of Siemens Voltage Injection 100% Stator Ground Protection with 20 Hz are introduced in this paper. The influences of grounding current angel compensation and transmission resistance are analyzed subsequently. By the debugging of the software and the correction of the grounding current angel compensation ＆ the transmission resistance, the precision, of the ground-resistance with 20 Hz ground protection is improved. The methods are also presented to prevent malfunction due to the 20 Hz power supply and its lead wire faults in this paper.
出处
《电力科学与工程》
2011年第8期38-41,共4页
Electric Power Science and Engineering
