基于RRLS的电网戴维南等值参数辨识研究  

Research on Thevenin Equivalent Parameters Identification based on Robust Recursive Least Square

作　　者：丁蓝[1] 班诗淇 曾博[2] 

机构地区：[1]国网四川省电力公司南充供电公司,四川南充637000 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《电气技术》2017年第2期78-82,共5页Electrical Engineering

摘　　要：互联电网的规模不断扩大,为简化规模满足运算要求,戴维南等值广泛用于电力系统计算中。本文从戴维南等值参数获取方法进行分类,通过分析了戴维南等值模型以及参数的特点,讨论了利用端口电压电流数据的可辨识条件,进而提出了基于抗差递推最小二乘的戴维南等值参数辨识,抗差递推最小二乘算法能够有效地处理因为工况运行点过于接近所导致的戴维南参数漂移问题,同时能够有效并且具有一定抗干扰的参数跟踪能力。简单电路测试表明抗差递推最小二乘更够更快地反映参数变化,并且证明了其具备抗差性,同时四机两区域系统计算结果表明所提方法的有效性。The thevenin equivalent is widely used in power system calculation for simplifying the scale. In this paper, thevenin equivalent parameter acquisition method is reviewed and the model characteristics are analyzed. Then, robust recursive least square is presented to track thevenin equivalent parameter considering numerical instability and the changing operating point of power gird. At last, the tracking performance test and four-machine two-area system simulation prove the validity and stability of the proposed algorithm.

关 键 词：戴维南等值 参数辨识 抗差递推最小二乘 

分 类 号：TM744[电气工程—电力系统及自动化]