考虑风力发电随机性的配电网重构

针对含风力发电的配电网系统建立风力发电机和负荷随机模型.采用提出的粒子群引导的最小生成树算法对配电网进行重构,引入随机潮流分析风力发电机随机出力对配电网的影响,并以有功损耗期望值和静态不安全概率评价重构方案的优劣,获得合理的重构方案.该重构算法综合了粒子群优化算法和最小生成树算法的优点,避开了粒子群优化算法在优化过程中产生的大量无效解,引导生成树向目标函数最优方向发展.算例仿真结果表明,文中采用的方法不仅可以降低系统有功损耗,而且有效地解决了风力发电随机性对系统稳定性的影响.

Distribution Network Reconfiguration Considering Randomness of Wind Power Generation

In consideration of distribution networks with embedded wind power,a stochastic model of wind power generation and load is established. Reasonable reconstruction results can be obtained by adopting the proposed algorithm to reconfigure the network,which is called minimum spanning tree led by particle swarm optimization,using probabilistic power flow to analyze the impact of the random output of wind power and taking static unsafe probability of network and mathematical expectation of the network loss to eva...