含分布式电源的配电网潮流计算

分布式电源（DG）的发展给传统的电力系统注入了新的活力。文中介绍了DG与电网互联的3种常见接口形式，对异步发电机、无励磁调节能力的同步发电机和燃料电池等几种典型DG的运行方式和控制特性进行了研究，建立了各自在潮流计算中所需的数学模型，并在此基础上提出了基于灵敏度补偿的配电网潮流计算方法，该方法适合包含各种不同DG形式的多电源配电系统。将提出的方法用于90节点配电系统进行测试，测试结果表明该方法是可行的。

Study on Power Flow Calculation of Distribution System with DGs

The development of distributed generation (DG) has brought new challenges to traditional power systems. Three familiar interfaces between DG and power grid are described in this paper. The operation modes and control characteristics of typical DG, including the asynchronous generator, synchronous generator with constant values of excitation voltage and fuel cell, are studied and their models in power flow calculations are presented. Based on the above, a new algorithm for the calculation of distribution power flow is presented, which uses the sensitivity compensation method and is available to calculate distribution power flow with multi-source and multi-type DGs. An example of 90-node system has proved the feasibility of the method proposed.