交直流混联系统节点网损微增率算法  

A Hybrid AC/DC System Incremental Transmission Losses Algorithm

作　　者：常鲜戎[1] 李衍孜[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003

出　　处：《电网技术》2016年第4期1081-1086,共6页Power System Technology

摘　　要：交直流混联系统的网损问题和传统交流系统的有很大不同。交流系统主要通过配置无功来降低网损,而直流系统主要通过调节直流有功功率来降低网损。交直流混联系统的网损问题就变得更加复杂。对增广雅可比矩阵进行修正,将直流系统的有功和无功功率设作和电压相关的交流负荷,与交流系统的网损微增率算法相结合,提出一种能够计及平衡节点的交直流混联系统网损微增率算法。该算法能够直接计算包括平衡节点在内各节点的网损微增率,可以任意选取平衡节点而且计算结果不受影响。在IEEE 9、IEEE 22、IEEE 39节点系统算例计算结果验证了该算法的合理性,并且在计算精度和计算速度方面具有较大的优越性。Transmission loss of AC/DC hybrid system is quite different from traditional AC system. AC system decreases transmission losses mainly by configuring reactive devices, and DC system chiefly adjusts DC active power to decrease transmission losses. Hybrid AC/DC system transmission losses are more complicated. This paper proposed a hybrid AC/DC system incremental transmission loss algorithm, taking slack node into account. DC system＇s active and reactive power was treated as AC load for modifying augmented Jacobian matrix. This algorithm could directly calculate incremental transmission losses of all nodes including slack node, and calculation results wouldn＇t be influenced no matter which node was chosen as slack node. Calculation results in IEEE 9、IEEE 22、IEEE 39 node systems validated reasonableness of the proposed algorithm and its higher superiority in computing accuracy and speed.

关 键 词：交直流 网损微增率 平衡节点 增广雅可比矩阵 

分 类 号：TM72[电气工程—电力系统及自动化]