以重现故障过程为目的的电网故障诊断

发布时间：2018-05-26 20:54

本文选题：电网故障诊断 + 故障过程　；参考：《中国电机工程学报》2014年13期

【摘要】：为了适应电网故障在时间和空间维度的不确定性,在故障特征不明显、信息错误等复杂条件下为调度员完整地重现故障过程,提出了基于变长度染色体遗传算法的电网故障诊断方法。该方法通过故障信息之间的逻辑约束关系生成故障假说;针对信息漏报、误报、时序畸变等复杂情况提出故障假说修正策略;考虑保护装置操作的相关性和电路联系建立了计及保护动作行为一致性的测度函数;采用变长度染色体遗传算法求取最优解,以满足故障假说中事件长度动态变化的要求。可以在故障信息不可信的条件下,有效诊断包含多重不确定因素的复杂电网故障。基于实际电网发生的故障案例验证了所提出方法的有效性。
[Abstract]:In order to adapt to the uncertainty of the time and space dimension of the power grid fault, the fault process is reproduced for the dispatcher in complex conditions such as the fault feature and information error, and a fault diagnosis method based on the variable length chromosome genetic algorithm is proposed. This method generates the fault through the logical constraint relation between the fault information. Hypothesis; the fault hypothesis correction strategy is proposed for information leakage, misinformation, time series distortion and so on. Considering the correlation and circuit connection of the protection device operation, the measure function of the consistency of protective action behavior is established, and the best solution is obtained by using the variable length chromosome genetic algorithm to satisfy the dynamic change of the event length in the fault hypothesis. In the condition of untrusted fault information, it can effectively diagnose the complex power grid fault which contains multiple uncertain factors. The effectiveness of the proposed method is verified based on the fault case occurring in the actual power grid.
【作者单位】：华北电力大学电气与电子工程学院;
【基金】：国家自然科学基金项目(51377054) 教育部中央高校基本科研业务费专项基金项目(12MS27)~~
【分类号】：TM73

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