Parameter Optimization of Measurement-Based Load Model Based on Bootstrap
Han Dong1, Ma Jin2, He Renmu2
1. Institute of Electrical Engineering, Chinese Academy of Sciences Beijing 100190 China 2. Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control of Ministry of Education North China Electric Power University Beijing 102206 China
Abstract：Load model is one of the most important elements in power system simulation and control. This paper proposes a new strategy to choose the parameters of load models based on the Bootstrap. Firstly, the optimization methods are used to identify the parameters through single field-measured curve. And then statistical distribution of each parameter is estimated by the Bootstrap. Finally, the value of each parameter is chosen according to its statistical characteristics. Since the Bootstrap estimates the approximate distribution of unknown parameter by converting the small-sample problem into the large-sample issue, the proposed strategy can make full use of the measured data and objectively estimate the statistical characteristics under small samples space. The case study verifies the validation of the proposed strategy, and it is shown that the load model established by the proposed strategy have good capability on describing the load dynamics.
韩冬, 马进, 贺仁睦. 基于Bootstrap的实测负荷模型参数优选[J]. 电工技术学报, 2012, 27(8): 141-146.
Han Dong, Ma Jin, He Renmu. Parameter Optimization of Measurement-Based Load Model Based on Bootstrap. Transactions of China Electrotechnical Society, 2012, 27(8): 141-146.
[1] Dmitry N. Kosterv, Carson W. Taylor. Model validation for august 10.1996 WSCC system outage[J]. IEEE Transactions on Power System, 1999, 14(3): 967-979. [2] 贺仁睦. 电力系统精确仿真与负荷模型实用化[J]. 电力系统自动化, 2004, 28(16): 4-7. He Renmu. Power system accurate simulation and load model practicality[J]. Automation of Electric Power Systems, 2004, 28(16): 4-7. [3] 石景海. 考虑负荷时变性的大区电网负荷建模研究[D]. 北京: 华北电力大学, 2004. [4] He Renmu, Ma Jin, David Hill. Composite load modeling via measurement approach[J]. IEEE Transactions on Power Systems, 2006, 21(2): 663-672. [5] Han Dong, Ma Jin, He Renmu, et al. A real application of measurement-based load modeling in large-scale power grids and its validation[J]. IEEE Transactions on Power Systems, 24(4): 1756-1764. [6] BYoung-Kon Choi, Hsiao-Dong Chiang, Yinhong Li, et al. Measurement-based dynamic load models: derivation, comparison, and validation[J]. IEEE Transactions on Power Systems, 2006, 21(3): 1276-1283. [7] 卫志农, 鞠平. 电力负荷特性在线辨测——模型及辨识[J]. 电力系统自动化, 1992(4): 15-20. Wei Zhinong, Ju Ping. Online modeling of electric load —— model & identification[J]. Automation of Electric Power Systems, 1992(4): 15-20. [8] 鞠平, 马大强. 电力系统负荷建模[M]. 北京: 水利电力出版社, 1995. [9] 李欣然, 钱军, 王立德, 等. 配电网集结等效的异步电动机综合负荷模型及其总体测辨建模[J]. 电工技术学报, 2009, 24(4): 175-185. Li Xinran, Qian Jun, Wang Lide, et al. Synthesis Induction motor model of power composite load considering distribution network structure[J]. Transactions of China Electro-technical Society, 2009, 24(4): 175-185. [10] 郑晓雨, 贺仁睦, 马进, 等. 基于轨迹灵敏度的负荷分类[J]. 电工技术学报, 2010, 25(9): 145-150. Zheng Xiaoyu, He Renmu, Ma Jin, et al. A method of load classification based on the trajectory sensitivity[J]. Transactions of China Electrotechnical Society, 2010, 25(9): 145-150. [11] Brad Efron, Rob Tibshirani. An introduction to the Bootstrap[M]. New York: Chapman & Hall Inc, 1993. [12] A M Zoubir, B Boashash. The Bootstrap and its application in signal processing[J]. IEEE Signal Processing Magazine, 1998, 15(1): 55-76. [13] 刘琰君, 张效民. Bootstrap方法在水声信号检测中的应用[J]. 电声基础, 2007, 31(5): 4-6. Liu Yanjun, Zhang Xiaomin. Underwater acoustics signal detection based on bootstrap method[J]. Elementary Electroacoustics, 2007, 31(5): 4-6. [14] 盛骤, 谢武千, 潘承毅. 概率论与数理统计[M]. 2版. 北京：高等教育出版社, 1989. [15] 黄梅, 贺仁睦, 杨少兵, 等. 东北电网负荷模型的分类与应用[J]. 电力系统自动化, 2005, 29(4): 85-87. Huang Mei, He Renmu, Yang Shaobing, et al. Application of load model classification in northeast power network[J]. Automation of Electric Power Systems, 2005, 29(4): 85-87.
2012, Vol. 27 
