颜湘武,李若瑾.考虑高耗能点负荷的输电网励磁系统调差系数优化整定[J].电测与仪表,2021,58(2):95-100. yanxiangwu,liruojin.Optimization of the adjustment coefficient of excitation system for transmission network considering high energy consumption point load[J].Electrical Measurement & Instrumentation,2021,58(2):95-100.
考虑高耗能点负荷的输电网励磁系统调差系数优化整定
Optimization of the adjustment coefficient of excitation system for transmission network considering high energy consumption point load
Aiming at the nonlinearity and time-varying of high energy consumption load, high-density centralized load forms a high-energy point load situation, causing frequent fluctuations and over-limits of the grid voltage. Due to different time scales, secondary voltage regulation is hard to overcome the problem. In this paper, the optimal setting strategy of excitation system adjustment coefficient of generator set is proposed to improve the adverse effect of high energy consumption point load access. From the perspective of reducing the network losses and voltage fluctuation, a multi-objective function considering the load voltage fluctuation of the network losses and the central node and the high energy consumption point is established. The particle swarm optimization algorithm combined with the improved weight and immune algorithm is used to solve the problem. Taking the IEEE39 node system as an example, the result proves that after the optimization，the situation that the low voltage exceeds the limit can be avoided，the network losses are effectively reduced, and the economic and reliability of the power grid operation is improved.
