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针对目前面向单个电力设备元件的保护配置导致二次回路复杂、可靠性低、保护之间信息共享困难等问题,提出了数字化变电站中广域一体化保护的配置及实现方案。新方案对站内设备的主、后备保护功能分别进行集成,同时利用包括本站信息在内的区域电网多点信息实现广域后备保护。分析表明新的保护方案在优化保护功能的同时简化了数字化变电站中的网络配置。
Aiming at the problems of complex secondary circuit, low reliability and difficult information sharing between protection, the protection and configuration of single power equipment components are put forward. The configuration and implementation of integrated wide area protection in digital substation are proposed. The new scheme integrates the main and backup protection functions of the equipment in the station respectively, and at the same time uses the multi-point information of the regional power grid including the information of the station to realize the wide area backup protection. The analysis shows that the new protection scheme simplifies the network configuration in digital substations while optimizing the protection functions.