Adaptive Event-Triggered Secondary Frequency Control in Islanded Microgrids with Auxiliary Energy Storage Systems

doi:10.11930/j.issn.1004-9649.202210130

Abstract

Abstract: Under the high penetration of new energy, the frequency stability of islanded microgrids is challenged by the uncertain output of new energy and the random fluctuation of load. The existing secondary frequency control schemes with auxiliary energy storage systems mainly adopt periodic trigger control schemes, which have the disadvantage of high network bandwidth occupancy. Therefore, an adaptive event-triggered secondary frequency control strategy considering auxiliary energy storage systems and uncertain delays is proposed. First, an adaptive participation mechanism considering the state-of-charge (SoC) of energy storage devices is designed to avoid overcharge and overdischarge without affecting the control structure. Second, in order to reduce the network bandwidth occupation, an adaptive event-triggered control (ETC) strategy is designed. Only when the deviations of the secondary frequency control system exceed the trigger threshold, the statuses and control instructions can be transmitted. Finally, the design criteria of ETC parameters are derived based on Lyapunov stability theory. Simulation results show that compared with the periodic trigger control scheme, the proposed method reduces the network bandwidth occupancy by 95.3%, and the absolute value integral of frequency deviation is reduced by 8.98%.

Key words: islanded microgird, secondary frequency control, event-triggered control, energy storage system, adaptive control

XUE Fei, LI Hongqiang, TIAN Bei, MA Xin. Adaptive Event-Triggered Secondary Frequency Control in Islanded Microgrids with Auxiliary Energy Storage Systems[J]. Electric Power, 2023, 56(9): 196-205.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202210130

https://www.electricpower.com.cn/EN/Y2023/V56/I9/196

References

[1] 王岳, 杨国华, 庄家懿, 等. 基于一致性算法的微电网无差调频控制策略[J]. 中国电力, 2020, 53(10): 187–191
WANG Yue, YANG Guohua, ZHUANG Jiayi, et al. Zero-error frequency regulation control method for microgrids based on consensus algorithm[J]. Electric Power, 2020, 53(10): 187–191
[2] 李世辉, 王琪, 贾晓卜, 等. 考虑热泵负荷和分布式光伏的配微网协调调度[J]. 中国电力, 2022, 55(9): 29–37
LI Shihui, WANG Qi, JIA Xiaobo, et al. Coordinated dispatch of distribution microgrid considering heat pump load and distributed photovoltaic[J]. Electric Power, 2022, 55(9): 29–37
[3] 李志军, 张牟发, 张家安. 考虑延时的孤岛微电网频率协同控制策略稳定性分析及改进[J]. 天津大学学报(自然科学与工程技术版), 2022, 55(10): 1061–1070
LI Zhijun, ZHANG Moufa, ZHANG Jia'an. Stability analysis and improvement of frequency cooperative control strategy for island microgrid considering time delay[J]. Journal of Tianjin University (Science and Technology), 2022, 55(10): 1061–1070
[4] 马俊杰, 李永刚, 李建文, 等. 独立微网下频率和电压自恢复的二次调节及功率分配控制方法[J]. 现代电力, 2022, 39(3): 363–370
MA Junjie, LI Yonggang, LI Jianwen, et al. A secondary control strategy for frequency and voltage recovery and power sharing control method in island microgrid[J]. Modern Electric Power, 2022, 39(3): 363–370
[5] KAZEMI M V, SADATI S J, GHOLAMIAN S A. Adaptive frequency control of microgrid based on fractional order control and a data-driven control with stability analysis[J]. IEEE Transactions on Smart Grid, 2022, 13(1): 381–392.
[6] SUMAN G K, GUERRERO J M, ROY O P. Robust frequency control in interconnected microgrids: an H₂/H_∞ control approach[J]. IEEE Systems Journal, 2022, 16(2): 2044–2055.
[7] 杨永辉, 谢丽蓉, 李佳明, 等. 基于模糊控制的储能参与一次调频综合控制策略[J]. 智慧电力, 2023, 51(4): 38–45
YANG Yonghui, XIE Lirong, LI Jiaming, et al. Intigrated control strategy of energy strorage participating in primary frequency regulation based on fuzzy control[J]. Smart Power, 2023, 51(4): 38–45
[8] 张嘉诚, 夏向阳, 邓子豪, 等. 储能电站安全参与电网一次调频的优化控制策略[J]. 中国电力, 2022, 55(2): 19–27
ZHANG Jiacheng, XIA Xiangyang, DENG Zihao, et al. Optimal control strategy for energy storage power station in primary frequency regulation of power grid[J]. Electric Power, 2022, 55(2): 19–27
[9] YANG T, ZHANG Y J, LI W, et al. Decentralized networked load frequency control in interconnected power systems based on stochastic jump system theory[J]. IEEE Transactions on Smart Grid, 2020, 11(5): 4427–4439.
[10] 吴鸣, 宋振浩, 吕振宇, 等. 计及综合效益的虚拟同步化微电网二次调频策略[J]. 中国电机工程学报, 2020, 40(3): 743–754
WU Ming, SONG Zhenhao, LYU Zhenyu, et al. Secondary frequency regulation strategy of virtual synchronization technology based microgrid considering the integrated benefit[J]. Proceedings of the CSEE, 2020, 40(3): 743–754
[11] 陈沛, 张新松, 郭晓丽, 等. 考虑AGC指令随机特性的火-储混合电站二次调频研究[J]. 电力系统保护与控制, 2023, 51(12): 168–177
CHEN Pei, ZHANG Xinsong, GUO Xiaoli, et al. Secondary frequency regulation of a hybrid coal-fired generator and BESS power station considering random characteristics of AGC instructions[J]. Power System Protection and Control, 2023, 51(12): 168–177
[12] 潘俊良. 利用电池储能辅助传统机组二次调频优化[J]. 电气应用, 2022, 41(3): 8–14
PAN Junliang. Combined frequency modulation optimization of conventional units assisted by battery energy storage[J]. Electrotechnical Application, 2022, 41(3): 8–14
[13] 吕永青, 窦晓波, 杨冬梅, 等. 含荷电状态修正和通信延迟的储能电站负荷频率鲁棒控制[J]. 电力系统自动化, 2021, 45(10): 59–67
LYU Yongqing, DOU Xiaobo, YANG Dongmei, et al. Load-frequency robust control for energy storage power station considering correction of state of charge and communication delay[J]. Automation of Electric Power Systems, 2021, 45(10): 59–67
[14] 吕力行, 陈少华, 张小白, 等. 考虑规模化电池储能SOC一致性的电力系统二次调频控制策略[J]. 热力发电, 2021, 50(7): 108–117
LYU Lixing, CHEN Shaohua, ZHANG Xiaobai, et al. Control strategy for secondary frequency regulation of power system considering SOC consensus of large-scale battery energy storage[J]. Thermal Power Generation, 2021, 50(7): 108–117
[15] ALGHAMDI S, SCHIFFER J, FRIDMAN E. Synthesizing sparse and delay-robust distributed secondary frequency controllers for microgrids[J]. IEEE Transactions on Control Systems Technology, 2021, 29(2): 691–703.
[16] SHANGGUAN X C, HE Y, ZHANG C K, et al. Control performance standards-oriented event-triggered load frequency control for power systems under limited communication bandwidth[J]. IEEE Transactions on Control Systems Technology, 2022, 30(2): 860–868.
[17] 刘东明, 杨杨, 王军波, 等. 基于事件触发的互联电网负荷频率模型预测输出反馈控制[J]. 电力建设, 2020, 41(2): 108–117
LIU Dongming, YANG Yang, WANG Junbo, et al. Event-triggered load frequency model predictive output feedback control of interconnected grid[J]. Electric Power Construction, 2020, 41(2): 108–117
[18] PENG C, ZHANG J, YAN H C. Adaptive event-triggering H_∞ load frequency control for network-based power systems[J]. IEEE Transactions on Industrial Electronics, 2018, 65(2): 1685–1694.
[19] LU K D, ZENG G Q, LUO X Z, et al. An adaptive resilient load frequency controller for smart grids with DoS attacks[J]. IEEE Transactions on Vehicular Technology, 2020, 69(5): 4689–4699.
[20] 周运红, 张爱民, 黄晶晶, 等. 基于动态事件触发的Vienna整流器模型预测控制[J]. 电工技术学报, 2022, 37(8): 2040–2050
ZHOU Yunhong, ZHANG Aimin, HUANG Jingjing, et al. Dynamic event-triggered model predictive control for Vienna rectifier[J]. Transactions of China Electrotechnical Society, 2022, 37(8): 2040–2050
[21] 杜健, 王德顺, 冯鑫振, 等. 考虑储能SOC的微网接口变流器VSG协同控制[J]. 电力工程技术, 2020, 39(3): 128–135
DU Jian, WANG Deshun, FENG Xinzhen, et al. VSG collaborative control of microgrid interface converter considering energy storage SOC[J]. Electric Power Engineering Technology, 2020, 39(3): 128–135
[22] RAFIEE A, BATMANI Y, AHMADI F, et al. Robust load-frequency control in islanded microgrids: virtual synchronous generator concept and quantitative feedback theory[J]. IEEE Transactions on Power Systems, 2021, 36(6): 5408–5416.
[23] ZHANG Y J, PENG C, CHENG C L, et al. Attack intensity dependent adaptive load frequency control of interconnected power systems under malicious traffic attacks[J]. IEEE Transactions on Smart Grid, 2023, 14(2): 1223–1235.
[24] 董家伟, 王志新, 朱国忠, 等. 孤岛运行下垂逆变器二次调频方法[J]. 电力自动化设备, 2022, 42(5): 40–46
DONG Jiawei, WANG Zhixin, ZHU Guozhong, et al. Secondary frequency regulation method for droop inverters in island operation[J]. Electric Power Automation Equipment, 2022, 42(5): 40–46