电网故障诊断系统在线运行状况分析及其改进措施

On-Line Operation State Analysis on Fault Diagnosis System of Power Network and Its Improved Measures

对于投入在线运行的电网故障诊断系统,为了分析统计诊断结果的正确率和追查错误根源,研究开发了记录该系统各环节生成的历史故障数据的功能,利用该功能记录了某地区电网故障诊断系统从2008年11月到2010年2月试运行期间的历史故障数据,研究制定了一个用历史数据分析电网故障诊断系统在线运行状况的流程,统计了这期间该系统总体运行情况,详细分析总结了故障诊断系统未启动和诊断结果错误的原因,并提出相应的改进措施。最后提出将历史数据用于在线电网故障诊断的思路及其需要解决的关键问题,阐述了研究开发自动维护电网二次数据工具的必要性。

To analyze the accuracy rate of diagnosis result and find out the cause of incorrect diagnosis for online fault diagnosis system,the function of recording historical fault data which is generated from each part of the system is developed.Using of this function,the historical fault data of fault diagnosis system for certain power grid generated during trial operation from November 2008 to February 2010 is recorded.The procedure used to analyze the operation condition of fault diagnosis system for power grid is formulated,and a statistics of whole operation information during this period is made.The cause of fault diagnosis system not starting and incorrectness of fault diagnosis results are analyzed in detail,and the improvement measures are proposed.The ideas of using historical data to online diagnose the power network fault based on historical data and its key issues are put forward,and the necessity of developing the tool for automatic maintenance for electrical secondary data is demonstrated.The achievement of this paper will play an important role in promoting the practicability of fault diagnosis for power grid.