摘要
从改善多时段电网运行电压水平和降低网损的角度出发,提出了电网多时段多目标的发电机励磁系统调差系数的优化模型和优化方法。分析了发电机励磁系统调差系数对电网运行电压的影响,并建立了以系统多时段下电网中枢点电压波动指标和有功网损最小的目标函数,电网潮流约束方程和发电机励磁系统调差系数为控制变量的优化模型,采用粒子群优化方法(PSO)对其模型进行求解,并通过对长春地区电网算例仿真,表明所提出的发电机励磁系统调差系数优化方法能够降低电网网损,改善电网运行电压水平。
From the viewpoint of improving grid operating voltage level in multi-time intervals and reducing network loss, an optimization model of multi-time interval and multi-objective difference coefficients of generator excitation system and corresponding optimization method are proposed. The impacts of difference coefficients of generator excitation system on power grid operating voltage of power are analyzed;an optimization model of difference coefficients of generator excitation system, in which the minimum voltage fluctuation at power grid pilot point in multi-time intervals and the minimized active network loss are taken as the objective functions and the power flow equations are taken as constraints and difference coefficients of generator excitation system are taken as control variables, is built and solved by particle swarm optimization algorithm. Simulation results of Changchun regional power grid show that using the proposed optimization method of difference coefficients of generator excitation system the network loss can be reduced and the operating voltage level of power grid can be improved.
出处
《电网技术》
EI
CSCD
北大核心
2013年第11期3178-3183,共6页
Power System Technology
基金
教育部"长江学者和创新团队发展计划"项目(IRT1114)~~
关键词
无功电压控制
励磁系统调差系数
粒子群算法
reactive power and voltage control difference coefficients of excitation system PSO
