数字化变电站扩建时的不停电接口方案及实施

Outage-prevented Interface Scheme during Extension of Digital Substations and Its Implementation

常规变电站扩建时电缆点对点的联系清晰可见,而数字化变电站中所有智能电子设备的信息交互都呈现为抽象的网络信息流,待投产的设备与其他运行设备接入到同一台交换机,扩建时既要保证试验的完整性和安全性,又要保证供电的可靠性。以芝堰变电站220 kV下涯Ⅰ线间隔扩建为例,介绍了一种不影响供电可靠性和不停用一次设备的扩建接口方案。

The point-to-point connection of cables can be clearly seen during extension of conventional sub- station, However, the information interaction of all smart electronics in digital substations appears abstract net- work information flow. The equipment to be put into operation and other operating equipment are connected to the same exchanger. During extension, completion and safety of the test as well as power supply reliability need to be guaranteed. Takes the interval extension of 220 kV Xiaya I line of Zhiyan substation as an exam- ple, the paper introduces an interface scheme neither influencing power supply reliability nor shutting down the primary equipment.