总线式电容型设备绝缘在线检测系统

Bus Model On-line Insulation Monitoring System of Capacitive Equipment

变电站电容型高压设备繁多,分布分散,适合应用现场总线技术组建总线式的电容型设备绝缘在线检测系统。阐述了基于分压电容的信号采集原理,提出了多下位机同步采样控制方法。基于这些原理方法,开发了一套容型设备介损在线检测系统并应用于实际工程,实践验证了该方法和设计方案的可行性。

Capacitive equipments are very important in our power system. Therefore, on-line monitoring of power equipments becomes necessary. In this paper, the method of signal collection based on the principle of capacitor dividing voltage, and the principle of synchronous sampling are introduced. Based on these methods, a bus model on-line tgδ monitoring system is developed, and it has already been used in the substation. The method and the design prove to be efficient through test of practical project.