NSD550保护接口设备几个疑问的试验与结论

Testing and conclusions to some questions about NSD 550 teleportation(relay protection interface)equipment

NSD550内置事件记录器能准确记录发送和接收命令的起始时间与结束时间(定位到1ms)。其记录的数据是电力系统事故分析的重要依据,根据这些数据能准确地判断继电保护装置动作的先后次序,以及事故发生地点。而有些数据无法解释且在设备说明书中没有说明,只有通过试验、分析,才能找到解决的方法。

The NSD 550 integrated event recorder can record the starting and stopping time of all transmission and receiving commands accurately(the resolution of the events which can be discriminated is 1ms).The data recorded is used as the analyzing evidences of the accidents in the power system.According to the data,the sequence of the actions produced by the relay protection equipment can be determined,as well as the accident locations.However,some of the data cannot be explained for they are ignored in the user manual.Only rely on testing these problems can then be solved.