海底电缆输电线路无功补偿方法研究

Research on Reactive Power Compensation Method of Submarine Cable Transmission Line

现有的输电线路无功补偿方法在计算补偿功率时不准确,导致补偿效果较差,因此设计海底电缆输电线路无功补偿方法。计算无功功率最大负荷,包括补偿容量、平均补偿负荷、无功补偿瞬时功率等,遵循三相相序的结构,检验不对称电流的负荷值。建立海底电缆输电线路无功补偿模型,设置目标函数与约束条件,控制有功网损与最小奇异值。设计自适应无功补偿控制算法,实现海底电缆输电线路的无功补偿。实验结果表明,四种方法均在200次迭代前达到了有功网损的最小值,其中所提方法的有功网损值最小,且该方法的最小奇异值在达到最优解时大于其他方法,具有较好的补偿效果。

The existing reactive power compensation methods of transmission line are inaccurate in calculating the compensation power,resulting in poor compensation effect.Therefore,the reactive power compensation method of submarine cable transmission line is designed.The maximum load of reactive power,including compensation capacity,average compensation load,instantaneous power of reactive power compensation are calculated.Following the structure of the three-phase phase sequence,the load value of the asymmetrical current are checked.An adaptive reactive power compensation control algorithm is designed to realize reactive power compensation of submarine cable transmission lines.The experimental results show that the four methods all reach the minimum value of active power network loss before 200 iterations,among which the value of active power network loss of the proposed method is the smallest,and the minimum singular value of this method is greater than that of other methods when reaching the optimal solution,so it has better compensation effect.