An LCC-HVDC Adaptive Emergency Power Support Strategy Based on Unbalanced Power On-Line Estimation  

作　　者：Congshan Li Jian Guo Ping He Yukun Tao Cunxiang Yang Youyi Wang 

机构地区：[1]School of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China [2]School of Electrical&Electronic Engineering,Nanyang Technological University,Singapore 639798,Singapore

出　　处：《Journal of Harbin Institute of Technology(New Series)》2020年第2期87-96,共10页哈尔滨工业大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.51607158);the Key Scientific Technological Project in Henan Province(Grant No.192102210075)。

摘　　要：HVDC auxiliary power control can significantly improve the transient stability of AC/DC power grid.An HVDC adaptive emergency power support method based on unbalanced power on line estimation is proposed in this paper.By establishing the extended state equation of the system,the on line dynamic estimation of unbalanced power of the system was realized.On this basis,power support was realized based on the principle of the ladder increment.The optimal DC was selected by the power support factor,and the emergency power support controller was installed on the DC.This emergency power support method can realize dynamic optimal power support with minimized control cost.The three infeed HVDC system was built on PSCAD.The simulation results show the effectiveness of the proposed method.

关 键 词：EMERGENCY POWER support unbalanced POWER extended state OBSERVER LADDER increasing PRINCIPLE multi infeed HVDC system 

分 类 号：TM7[电气工程—电力系统及自动化]