Design of a nonlinear adaptive wide-area supplementary controller for an AC/DC hybrid power system

被引：0
|
作者：
Zhang Z. [1 ]
Yao W. [1 ]
Yan C. [1 ]
Gao L. [2 ]
Wen J. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan
[2] China Electric Power Research Institute Co., Ltd., Beijing
来源：
Yan, Cai (caiyan@hust.edu.cn) | 1600年 / Power System Protection and Control Press卷 / 49期
关键词：
AC/DC hybrid grid; Adaptation; Disturbance observer; Transient stability; Wide-area control;
D O I：
10.19783/j.cnki.pspc.210127
中图分类号：
学科分类号：
摘要：
To improve the transient stability of an AC/DC hybrid grid, this paper designs a Nonlinear Adaptive Wide-Area Supplementary Controller (NAWSC) based on the large signal modulation of High Voltage Direct Current (HVDC). Without an accurate model, the proposed controller can directly estimate and compensate for the nonlinear dynamics in the actual system using a disturbance observer. It can also tackle the problem that it is difficult to design corresponding control measures when the model is uncertain. Equivalent wide-area power angle information is used for output feedback to realize transient stability control directly. Two case studies are undertaken based on a four-machine two-area AC/DC hybrid grid and a 10-machine 39-bus AC/DC hybrid system. The simulation results show that compared with a proportional integration wide-area supplementary controller, NAWSC possesses better adaptability under different operating conditions. When the uncertainty of parameters is taken into account, NAWSC possesses better control robustness compared with a feedback linearized wide-area supplementary controller. Based on the accurate model, NAWSC can improve the transient regulation capability of HVDC. © 2021 Power System Protection and Control Press.
引用
收藏
页码：137 / 147
页数：10
相关论文
共 27 条
  • [1] LI Ting, XU Weiting, LIU Xianglong, Et al., Review on planning technology of AC/DC hybrid system with high proportion of renewable energy, Power System Protection and Control, 47, 12, pp. 177-187, (2019)
  • [2] ZHANG Zhijie, YAO Wei, GAO Lei, Et al., Optimal configuration of excitation system ceiling voltage considering different performance of generators, Power System Protection and Control, 48, 12, pp. 41-49, (2020)
  • [3] LI Mingjie, Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids, Power System Technology, 40, 4, pp. 985-991, (2016)
  • [4] SUN Shiyun, SHU Hongchun, TANG Lan, Et al., Influence of forced exaction on transient stability margin of AC/DC hybrid power transmission system, Power System Technology, 32, 23, pp. 35-39, (2008)
  • [5] ZHANG De, TIAN Guoliang, TAN Yudong, Et al., Optimal control of MTDC for improving rotor angle stability of AC systems, Power System Protection and Control, 48, 17, pp. 37-44, (2020)
  • [6] WANG Youyi, HILL D J, MIDDLETON R H, Et al., Transient stability enhancement and voltage regulation of power systems, IEEE Transactions on Power Systems, 8, 2, pp. 620-627, (1993)
  • [7] CHANG Haijun, HUO Chao, LIU Fusuo, Et al., Research on optimal allocation method of synchronous condensers for improving transient voltage stability level of weak sending-end power grid, Power System Protection and Control, 47, 6, pp. 90-95, (2019)
  • [8] ZOU Yansheng, The research on HVDC and SVC nonlinear control for improving power system stability, (2017)
  • [9] LU Qingjie, XU Zheng, DONG Huanfeng, Et al., HVDC modulation principle and supplementary controller design method of non parallel AC/DC system, Power System Technology, 40, 2, pp. 548-555, (2016)
  • [10] DASH P K, PUTHAL B, MALIK O P, Et al., Transient stability and optimal control of parallel AC-DC power systems, IEEE Transactions on Power Apparatus and Systems, 95, 3, pp. 811-820, (1976)
123