摘要
中性点绝缘系统的接地电容电流 ,是电力系统的重要参数之一。通常采用附加电容法和金属接地法进行测量和计算 ,但前者测量方法复杂 ,并且附加电容对测量结果的影响较大 ,而后者试验中又具有一定的危险性。为此 ,提出了一种利用单相接地故障数据估计小电流系统对地电容电流的新方法。该方法适用于对误差要求不很严格并且工作量较大的场合 ,经过仿真表明 ,结果基本准确。
The grounding capacitive current is one of the most important parameters of ungrounded neutral system. Usually this parameter is obtained with the method of additional capacitor or metal grounding. However, the former is complicated and the additional capacitor has negative effects on measurement results, and the later is dangerous when used in testing. In view of that, the paper proposes a new method to calculate grounding copacitance based on the data of single-phase-grounding faults in power system with indirectly earthed neutral. The simulation results show that this method is accurate basically.
出处
《继电器》
CSCD
北大核心
2004年第3期29-31,38,共4页
Relay
