智能变电站不停电电力系统继电保护校验技术

Verification Technology of Uninterruption Power System Relay Protection for Smart Substation

针对杭州电力局220kV云会全智能变电站继电保护系统,采用传统的二次设备伴随一次设备停电的传统方法进行电力系统继电保护校验,增加了一次设备计划停电次数、降低了供电可靠性等。为使智能变电站继电保护不停电校验,充分利用智能变电站采样值光纤网络技术、GOOSE光纤网络技术、GOOSE心跳报文技术、双重化的保测一体化线路保护装置、双套保护实现完全双重化设计等整合出云会全智能化变电站的GOOSE出口安措技术,提出了在线校验GOOSE出口安措的基本原则,探索了智能变电站不停电保护校验的安措,并进行了智能变电站不停电保护校验的工程实践,实现了我国智能变电站继电保护不停电校验,进而验证了智能化变电站继电保护不停电在线校验安措技术的可靠性。

In view of 220 kV Yunhui smart substation in Hangzhou municipal electric power bureau, combination of traditional secondary equipment and primary equipment with interruption of power supply for relay protection verification may increase scheduled outages of primary equipment and reduce power supply reliability. In order to ensure uninterrup- tion of power supply relay protection verification for smart substation, some technologies including sample fiber optic net- work, GOOSE fiber optic network, GOOSE message, double test line protection device, and complete double protection, are used to design GOOSE outlet safety measure of Yunhui smart substation. And then, the basic principle of online veri fication GOOSE outlet safety measure is proposed. At the same time, it discusses the safety measure of uninterruption of power supply protection verification for smart substation and engineering practice. So, it achieves the relay protection ver ification without power cut in China. Furthermore, it proves the reliability of online relay protection verification technolo- gy without power cut in smart substation.