面向SCADA系统的电网故障诊断信息的获取

Acquisition of Power System Fault Diagnosis Information From SCADA System

对在线电网故障诊断系统的信息获取问题进行深入研究,基于目前的SACDA信息平台,提出一种故障诊断信息的在线获取方法。该方法采用文中提出的动态事件窗生成技术,先对含有电网故障信息的告警信号进行截获,然后结合故障元件、保护动作和断路器跳闸的关联性,从截获的告警信号中提取电网故障诊断信息。动态事件窗生成技术可有效地克服错误告警信息影响,保证所获取电网故障信息的正确性和完整性。所提方法已经应用于实际电网的故障诊断系统,运行结果表明其是有效且可行的。

The problem of acquiring the information of online power system fault diagnosis system was researched in depth. Based on existing SCADA information platform, a method for online acquisition of fault diagnosis information was proposed. Using the generation technique of dynamic event window proposed in this paper, firstly the alarm signal containing power system fault information was intercepted and captured; then combining with the relevance among faulty elements, protection actions and trip-out of circuit breakers the power system fault diagnosis information in the captured alarm signal was extracted. The generation technique of dynamic event window could effectively defeat the harmful influence of wrong alarm signal, thus the correctness and integrity of the acquired power system fault information could be ensured. The proposed method has been applied in a fault-diagnosis system of actual regional power network, and its effectiveness and feasibility were proved by operational effects.