An improved adaptive weighting function method for State Estimation in Power Systems with VSC-MTDC

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Zhao, Kun^1 ; Yang, Xiaonan^1 ; Lang, Yansheng^1 ; Song, Xuri^1 ; Wang, Minkun^2 ; Luo, Yadi^1 ; Wu, Lingyun^2 ; Liu, Peng^1

China Electric Power Research Institute, Beijing

100192, China^1

State Grid Southwest Dispatching and Control Center, Chengdu

610000, China^2

关键词: Adaptive weighting;    Adaptive weights;    Effective approaches;    Fast convergence;    High voltage direct current;    Simulation analysis;    State estimation methods;    Technical support;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012055/pdf
DOI  :  10.1088/1755-1315/61/1/012055

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper presents an effective approach for state estimation in power systems that include multi-terminal voltage source converter based high voltage direct current (VSC-MTDC), called improved adaptive weighting function method. The proposed approach is simplified in which the VSC-MTDC system is solved followed by the AC system. Because the new state estimation method only changes the weight and keeps the matrix dimension unchanged. Accurate and fast convergence of AC/DC system can be realized by adaptive weight function method. This method also provides the technical support for the simulation analysis and accurate regulation of AC/DC system. Both the oretical analysis and numerical tests verify practicability, validity and convergence of new method.