针对某微机线路保护装置在某变电站运行一段时间后出现的遥信误报现象进行了分析,定位出现问题的保护元件——展宽元件.对问题展宽元件和修改后的展宽元件的程序逻辑进行了详细分析,找出问题发生的原因.介绍了windows平台下模拟保护模块功能测试的测试模型.在基于此模型开发的测试平台上,针对展宽元件进行软件测试.测试时用判定表法设计测试用例和运用对比测试法对问题进行验证.最后总结了保护模块测试方面的一些思路.%This paper analyses the misoperation of remote signaling in a certain microprocessor-based line protection equipment after running a period of time in one transformer substation, and locates the problematic element-extension element. This paper analyzes the program logic of the problematic element and the modified element in detail, and finds the cause of the problem. It also introduces the model of function test of protection module in windows. On the test platform which is developed according to the model above, we conduct software test on the extension element. In the testing phase, we use the decision table method to design the test case and use the contrast testing method to verify if the problem is solved. In the end, some ideas for protection modules testing is summarized.
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