基于动态网损修正的改进交直流迭代算法  

An Improved AC-DC Iteration Algorithm Based on Dynamic Network Loss Modification

作　　者：黄巍[1] 张粒子[1] 王楠[1] 舒隽[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206

出　　处：《电网技术》2010年第6期119-122,共4页Power System Technology

摘　　要：应用于有功经济调度的交直流迭代算法无法在低发电成本条件下达到较低网损的目标。为此在直流最优潮流算法不考虑网损的基础上,借鉴经典经济调度的网损修正理论,并利用交流潮流模型计算网损及网损微增率,提出了动态网损修正方法,可对机组的边际成本参数进行修正。改进的交直流迭代算法在保证算法收敛的前提下,充分逼近了交流最优潮流算法的优化结果。IEEE30节点和IEEE118节点算例验证了该算法的可行性。The objective with lower network loss can not be achieved by AC-DC iteration algorithm used in economic dispatch of active power under the condition of low power generation cost. On the basis that optimal DC power flow algorithm in which the network loss allocation is not taken into account and drawing lessons from network loss modification in classical economic dispatching and calculating both network loss and incremental network loss by AC power flow model, a dynamic network loss modification method which can modify the marginal cost parameters of units is proposed. Under the premise of ensuring the convergence of the proposed algorithm, the improved AC-DC iteration algorithm can adequately approximate to the optimization results of optimal AC power flow algorithm. Calculation results of IEEE 30-bus system and IEEE 118-bus system validate the feasibility of the proposed algorithm.

关 键 词：有功经济调度 交直流迭代算法 动态网损修正 交流最优潮流算法 网损微增率 

分 类 号：TM731[电气工程—电力系统及自动化]