就地化分布式保护环网测试装置研制

就地化元件保护采用分布式架构,各分布式子机间采用环网通信方式。文中针对子机环网报文的测试难点,设计和开发了具备环网测试功能的新型继电保护测试装置。该装置采用双中央处理器(CPU)架构,主CPU负责测试流程管理,环网CPU负责环网数据交换测试。通过配置文本灵活组帧环网报文,开发延时测试、数据一致性测试、转发特性测试、异常报文模拟等功能,校验环网报文实际传输过程中的可靠性和实时性,补充了环网性能测试手段。文中通过单台测试装置即可完成分布式子机的保护功能及环网性能测试。所研制的装置已应用于就地化保护现场调试,为元件保护就地化实施提供了良好的测试手段。

Ring network test device development of on-site distributed protection relay

The outdoor installation component protection adopts the distributed architecture, and the ring network communication mode is adopted between the distributed sub machines. This paper focuses on the test difficulties of ring network messages, designs and develops a new relay protection tester with test function of outdoor installation ring network. The test device adopts dual CPU architecture. The master CPU is responsible for testing process management. The ring network CPU is responsible for the ring network data exchange test. The tester frames the ring network messages by configuring text, develops the test methods of delay characteristics, data consistency, forwarding characteristics and abnormal data simulation function, checks the reliability and real-time in the actual transmission process of ring network messages, and supplements the test means of ring network performance test. Protection function test and ring network performance test of the distributed sub machine can be completed by a single tester. It has been used, and provides a good test method for outdoor installation of component protection.