基于改进隐马尔可夫模型的高压断路器健康度评估方法

Health Status Evaluation Method of High Voltage Circuit Breaker Based on Refined Hidden Markov Model

高压断路器是电网的重要设备,断路器健康状态对于保障电网安全可靠运行具有重要意义。基于对断路器部件健康状态的获取,结合断路器部件关联性矩阵,给出一种基于改进隐马尔可夫模型的断路器整体健康度的评估方法。在时间尺度上预测断路器近期和远期的健康度,进而提出了检修工作的智能量化定级策略,实际算例验证了整体健康度评估方法的有效性。

High voltage circuit breaker is an important equipment in power grid.The healthy state of circuit breaker is of great significance to ensure the safe and reliable operation of power grid.Based on the acquisition of the health status of circuit breaker components,this paper presents an evaluation method of the overall health degree of circuit breaker based on the improved hidden Markov model.The short-term and long-term health of circuit breaker is predicted on time scale,then the intelligent quantitative grading strategy of maintenance work is put forward.The effectiveness of the method is verified by a practical example.