分布式电源并网潮流计算

Flow Power Calculation of a Local Power System With Distributed Generators

分布式发电系统并网对地区电网的潮流计算提出新的挑战和要求。基于分布式发电系统并网结构和控制特性,建立微型燃气轮机、光伏、风力发电、燃料电池几种典型的分布式发电系统并网系统在潮流计算中数学模型。针对前推回代法支路编号复杂,无法适应运行方式变化等不足,从实现方法上提出了一种基于"叶节点"的前推回代法。算例表明,该方法能很好地解决分布式发电系统并网潮流计算,具有较强通用性和实用性。

It has been faced with new challenges and requests for flow calculation of a local power system with distributed generators.Based on grid-connected structures and control modes of distributed generators, the model of distributed generators including micro-turbine,photovoltaic cell,wind turbine and fuel cell are built in power flow calculation of a local power system. Because of the traditional forword and backward substitution method having slip number complex that can not adapt to operation mode changes,the paper proposed a new method based on definition ＂lead node＂. The example results show that the presented method is feasibile and effective to solve flow calculation of a local power system with distributed generators.