Abstract
Security and stability control device plays a significant role in ensuring the reliable operation of power system. However, fault-operation, fail-operation, under-control and over-control could be caused by the failure of stability control devices and system. Taking SCS-500E, one kind of security and stability control device, the failure of hardware and software are discussed in this paper. According to device structure and failure data, the failure model of the device is established. The advantages of the Monte Carlo method are analyzed, and the failure probability of the device is calculated by this method. It is proved that the results worked by the method proposed in the paper are matched with the actual condition.
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