Transmission Grid Fault Diagnosis Based on Reasoning Chain
Transmission Grid Fault Diagnosis Based on Reasoning Chain
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发表时间：
2014
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通讯作者：
Zhang Na
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作者：
Zhang Na
为了提高故障诊断的准确性和效率，提出了一种利用数据时序的推理链诊断方法，解决了现有故障诊断方法不能综合考虑重合闸保护的问题，故障诊断结果具有解释故障的演绎过程和判断故障原因的特点从已知故障的事实出发，引入了事件集的概念，建立了故障信息逻辑模型，提出了一种基于推理链的故障诊断方法，确定了事件集之间的因果逻辑关系，定义了约束条件，并基于似然函数构造了冗余推理链组合，得到了最优结果电力系统故障的实际案例验证了该算法的有效性。
To improve the accuracy and the efficiency of fault diagnosis,a diagnosing method based on reasoning chain that makes use of the timing sequence of data is presented,solving the problem of existing fault diagnosing methods'inability to synthetically consider reclosing protection,failure protection and the protection of general components.The diagnosis result has the ability of explaining the deductive process of the fault and the characteristic of judging the cause of fault from the fact of the known fault.The concept of the event set is introduced and the logic model of the fault information is developed,thus simplifying the problem.A fault diagnosing method based on reasoning chain is provided while the causal logic relationships between event sets are determined and the constraint conditions defined.The redundant reasoning chain combination is constructed to get the optimum result based on the likelihood function of the prior data.An actual case of the power system fault has verified the algorithm.