A Flexible Power Distribution Strategy with Wind Turbine Generator and Energy Storage for Frequency Regulation in Isolated Microgrid

被引：0

作者：

Zhang J. ^{[1
]}

Zhang Z. ^{[1
]}

Hu S. ^{[1
]}

Li Y. ^{[1
,2
]}

Lin J. ^{[1
,2
]}

机构：

[1] College of Electrical and Information Engineering, Hunan University, Changsha

[2] Hunan Engineering Research Center of Large-Scale Battery Energy Storage Application Technology, Changsha

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 15期

关键词：

efficient utilization of energy; energy storage; flexible power distribution; frequency regulation; Isolated microgrid; wind turbine generator;

D O I：

10.19595/j.cnki.1000-6753.tces.211032

中图分类号：

学科分类号：

摘要：

Aiming at the issue of frequency fluctuations and low utilization of new energy in isolated microgrid operation, a flexible power distribution strategy with wind turbine generator (WTG) and energy storage (ES) equipment for frequency regulation is proposed in this paper. Firstly, the operating characteristics and corresponding control modes of various distributed generations in isolated microgrid are analyzed. Secondly, the state space model of isolated microgrid with WTG and ES participating in frequency regulation is established. Then, the optimized objective function in the rolling time domain is constructed with the goal of minimizing frequency deviation and maximizing energy utilization rate. And according to the frequency variation, the weight coefficients of the WTG and ES output power item in the objective function are adjusted in real time. Furthermore, the proposed strategy can flexibly adjust the boundary of the constraint conditions at each time section according to the time-varying characteristics of the wind speed and the state of charge (SOC) of ES, which can improve their safe operation level. Finally, the isolated microgrid model is built in MATLAB/Simulink platform, and the proposed control strategy is verified under different working cases. Simulation results show that, under the premise of satisfying the safety operation, the proposed strategy can realize isolated microgrid frequency control while optimizing the active power output of WTG and ES, reducing the wind power curtailment ratio, and achieving the goal of efficient utilization of energy. One more feature of the proposed strategy is the low dependence on the model parameter, which is conducive to robustness. © 2022 Chinese Machine Press. All rights reserved.

引用

页码：3767 / 3780

页数：13

共 29 条

[11]

Guo Lei, Su Jianhui, Shi Yong, Frequency regulation control strategy for microgrid in islanded model, Automation of Electric Power Systems, 41, 8, pp. 110-115, (2017)

[12]

Li Bin, Zhou Lin, Yu Xirui, Et al., Secondary frequency regulation for microgrid inverters based on improving virtual synchronous generator, Power Systems Technology, 41, 8, pp. 2680-2687, (2017)

[13]

Yan Xiangwu, Wang Xinghai, Wang Yueru, Research on novel zero-error frequency regulation control method for microgrid, Power System Protection and Control, 45, 21, pp. 1-6, (2017)

[14]

Zhang Qian, Li Yan, Ding Zhuwei, Et al., Self-adaptive secondary frequency regulation strategy of micro-grid with multiple virtual synchronous generators, IEEE Transactions on Industry Application, 56, 5, pp. 6007-6018, (2020)

[15]

Zhao Jiaxing, Gao Wei, Shangguan Mingxia, Et al., Review on frequency regulation technology of power grid by wind farm, Power System Protection and Control, 45, 21, pp. 157-169, (2017)

[16]

Shi Jingrong, Li Yong, He Li, Et al., A comprehensive inertia control method for improving the dynamic characteristics of hybrid AC-DC microgrid, Transactions of China Electrotechnical Society, 35, 2, pp. 337-345, (2020)

[17]

Li Junhui, Gao Zhuo, Li Cuiping, Et al., Control strategy for dynamic task coefficient based primary frequency regulation of wind power assisted by energy storage, Automation of Electric Power Systems, 45, 19, pp. 52-59, (2021)

[18]

Yan Xiangwu, Song Zijun, Cui Sen, Et al., Primary frequency regulation strategy of doubly-fed wind turbine based on variable power point tracking and supercapacitor energy storage, Transactions of China Electrotechnical Society, 35, 3, pp. 530-541, (2020)

[19]

Han Honggui, Qiao Junfei, Nonlinear Model-predictive control for industrial processes: an application to wastewater treatment process, IEEE Transactions on Industrial Electronics, 61, 4, pp. 1970-1982, (2014)

[20]

Le Jian, Liao Xiaobing, Zhang Yantian, Et al., Review and prospect on distributed model predictive control method for power system, Proceedings of the CSEE, 44, 23, pp. 179-191, (2020)

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