中文摘要：

利用遗传算法对高压直流断路器振荡回路电流波形进行分析,提出对直流断路器振荡回路容抗、感抗和阻尼电阻的值进行在线参数计算的方法,以实现对直流断路器振荡回路性能的正确评估.结合葛上直流输电工程中葛洲坝换流站现场在线监测数据和离线试验数据,通过与MATLAB中利用最小二乘法拟合的结果进行比较,验证了基于遗传算法的高压直流开关参数计算方法的准确性和可靠性.现场试验效果证明遗传算法在高压直流断路器参数计算与状态评估方面优于传统的方法,对实际参数的计算更为准确.

英文摘要：

The current waveforms of DC circuit breaker oscillation loop are analyzed by a new on-line parameter estimation method based on genetic algorithm （GA）. The method for estimating the parameters of capacitance, inductance and resistance in DC circuit breaker oscillation circuit, can evaluate the performance of DC circuit breaker oscillation loop accurately. According to the on-line monitoring data and off-line measured data of Gezhouba converter station, the veracity and reliability of the new method are validated by comparison with the traditional MAT- LAB curve fitting. The field trials show that GA is better than the traditional method in the aspect of parameter calculation and condition assessment of HVDC circuit breaker.