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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.
The genetic algorithm is used to analyze the current waveform of the HVDC circuit, and the method to calculate the on-line parameters of the capacitance, inductance and damping resistance of the DC circuit breaker is put forward in order to realize the correct performance of the DC circuit breaker’s oscillation circuit Evaluation.Combined with the on-site monitoring data and off-line test data of Gezhouba DC converter station in Ge-Shang DC transmission project and compared with the result of least squares fitting in MATLAB, the calculation method of HVDC parameters based on genetic algorithm Accuracy and reliability.The field test results show that the genetic algorithm is superior to the traditional method in the parameter calculation and status assessment of the HVDC circuit breaker and the calculation of the actual parameters is more accurate.