Research on operation control of a photovoltaic system with storage VSG based on cooperative adaptive control

被引：0
|
作者：
Cheng Z. [1 ]
Yu Y. [1 ]
Chai X. [2 ]
机构：
[1] School of Electrical Engineering, Zhengzhou University, Zhengzhou
[2] Electric Power Dispatching & Controlling Center, State Grid Henan Electric Power Company, Zhengzhou
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 24期
关键词：
Active frequency modulation; Adaptive control strategy; Reactive voltage regulation; Virtual synchronous generator;
D O I：
10.19783/j.cnki.pspc.200038
中图分类号：
学科分类号：
摘要：
There are shortcomings in the traditional Virtual Synchronous Generator (VSG) control strategy such as a lack of the virtual moment of inertia and dynamic adjustment characteristics of the damping coefficient. Thus a cooperative adaptive control strategy of the exponential moment of inertia and damping coefficient is proposed. This strategy can adjust the virtual inertia and damping coefficient online when the VSG angular velocity change rate and deviation is large, optimize the VSG moment of inertia and system damping dynamic adjustment characteristics, reduce the system overshoot σ%, and shorten the adjustment time. In this paper, the grid connection structure and working principle of the VSG are given, and the optical storage VSG model is established. The proposed adaptive control strategy is introduced in the control link, and the influence of the moment of inertia and damping coefficient on the power and frequency stability under sudden load change is analyzed. Finally, the effectiveness of the proposed strategy is verified by simulation. © 2020, Power System Protection and Control Press. All right reserved.
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页码：79 / 85
页数：6
相关论文
共 24 条
  • [1] ZHANG Jinping, WANG Ningbo, HUANG Rong, Survey on frequency regulation technology of power grid by high-penetration photovoltaic, Power System Protection and Control, 47, 15, pp. 179-184, (2019)
  • [2] DRIESEN J, VISSCHER K., Virtual synchronous generators, 2008 IEEE Power and Energy Society General Meeting-Conversion and Delivery of Electrical Energy in the 21st Century, pp. 1-3, (2008)
  • [3] REN Zipan, LU Baochun, ZHAO Yalong, Et al., Research on modeling and simulation of photovoltaic virtual synchronous generator, Power System Protection and Control, 47, 13, pp. 92-99, (2019)
  • [4] WANG Chengshan, WANG Shouxiang, Study on some key problems related to distributed generation systems, Automation of Electric Power Systems, 32, 20, pp. 1-4, (2008)
  • [5] ZHONG Q C, WEISS G., Synchronverters: inverters that mimic synchronous generators, IEEE Transactions on Industrial Electronics, 58, 4, pp. 1259-1267, (2011)
  • [6] ZHONG Q C, NGUYEN P L, MA Z., Self-synchronized synchronverters: inverters without a dedicated synchronization unit, IEEE Transactions on Power Electronics, 29, 2, pp. 617-630, (2014)
  • [7] ZHONG Q C, MA Z, NGUYEN P L., PWM-controlled rectifiers without the need of an extra synchronisation unit, IECON 2012-38th Annual Conference on IEEE Industrial Electronics Society, pp. 691-695, (2012)
  • [8] MING W L, ZHONG Q C., Synchronverter-based transformerless PV inverters, Industrial Electronics Society, IECON 2014-40th Annual Conference of the IEEE, pp. 4396-4401, (2014)
  • [9] LOIX T., Participation of inverter-connected distributed energy resources in grid voltage control, (2011)
  • [10] CHENG Qiming, YU Deqing, CHENG Yinman, Et al., Control strategy of virtual synchronous generator based on adaptive rotational inertia, Electric Power Automation Equipment, 38, 12, pp. 79-85, (2018)
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