小干扰稳定约束下电网可用输电能力研究  

Research on Power Grid Available Transfer Capability within Small Signal Stability Constraint

作　　者：徐遐龄[1] 林涛[2] 赖宏毅[1] 李锴[1] 徐琰[1] 徐颢霖 

机构地区：[1]华中电力调度通信中心,湖北武汉430077 [2]武汉大学电气工程学院,湖北武汉430072 [3]湖北省鄂州市电力公司,湖北鄂州436000

出　　处：《华中电力》2012年第1期49-53,共5页Central China Electric Power

摘　　要：小干扰稳定成为限制电力传输容量的重要因素之一,为计算小干扰稳定约束下的电力可传输容量,利用粒子群算法,构造了优化模型,借助小干扰稳定指标来衡量系统小干扰稳定性。调节参与因子较大的发电机出力,在改变少数关键发电机出力的情况下,既改善系统小干扰稳定性,又能使可用输电能力达到最大。新英格兰39节点系统证明了该方法的正确性和有效性。Small signal stability has been found to be the most important limiting factor when determining power transfer capabilities.To calculate the availbale transfer capability(ATC) within small signal stability constraint,this paper proposes a method based on particle swarm optimization(PSO) algorithm and a small signal stability index is used to determine the small signal stability status of a system.By adjusting the output of the generators with relatively large participation factors,the available transfer capability can be maximized with the improvement of the small signal stability.A case study of 39-bus New England system demonstrates the validity and effectivity of this approach.

关 键 词：电力系统 可传输容量 粒子群优化 小干扰稳定 参与因子 

分 类 号：TM711[电气工程—电力系统及自动化]