含分布式发电的配电网无功电压优化的研究

Reactive Power and Voltage Optimization of Distribution Network with Distributed Generation

通过对有关分布式发电的有功和无功输出特性进行研究,建立了含分布式发电的配电网无功优化数学模型,并通过改进的粒子群优化算法对模型进行优化。该模型以系统网损和电压偏差最小为优化目标,以系统的有功、无功以及节点电压为约束条件,利用惩罚函数的形式对越限的电压进行处理,并且以IEEE33系统节点为仿真实例进行仿真。仿真结果表明,通过优化粒子群算法对配网系统无功优化后,系统中有功损耗和电压质量都得到了显著的改善。

In this paper,a mathematical model was established for reactive power optimization of distribution network with distributed generation based on the studies on the active and reactive power output characteristics of distributed generation,and the model was optimized by improved particle swarm optimization algorithm.Taking the minimum system loss and voltage deviation as the optimization objective and the active power,reactive power and node voltage of the system as the constraints,the over-voltage is processed in the form of penalty function in this model.The IEEE33nodes system simulation results show that the active power loss and voltage equality of the distribution network system have been significantly improved after the reactive power optimization by the optimized particle swarm optimization algorithm.