基于分层事件触发的混合微电网集中控制策略

doi:10.11930/j.issn.1004-9649.202305073

中国电力 ›› 2024, Vol. 57 ›› Issue (3): 73-82.DOI: 10.11930/j.issn.1004-9649.202305073

基于分层事件触发的混合微电网集中控制策略

李一鸣¹^,²(), 何奇³, 王海亮³, 钟浩¹^,², 马辉¹^,²(), 黄悦华¹^,²

1. 三峡大学电气与新能源学院，湖北宜昌　443002
2. 梯级水电站运行与控制湖北省重点实验室（三峡大学），湖北宜昌　443002
3. 国网宜昌供电公司，湖北宜昌　443002

收稿日期:2023-05-16 接受日期:2023-10-10 出版日期:2024-03-28 发布日期:2024-03-26
作者简介:李一鸣（1999—），男，硕士研究生，从事智能电网、新能源微电网、综合能源系统研究，E-mail：lymxh233@163.com
马辉（1985—），男，通信作者，博士，副教授，从事混合微电网协调控制等研究，E-mail：mahuizz119@126.com
基金资助:
国家自然科学基金资助项目（61773080）；梯级水电站运行与控制湖北省重点实验室开放基金项目（2022KJX05）。

Centralized Control Strategy for Hybrid Microgrid Based on Layered Event Triggering

Yiming LI¹^,²(), Qi HE³, Hailiang WANG³, Hao ZHONG¹^,², Hui MA¹^,²(), Yuehua HUANG¹^,²

1. College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
2. Hubei Provincial Key Laboratory of Cascaded Hydropower Stations Operation & Control, Yichang 443002, China
3. Yichang Electric Power Grid Co., Ltd., Yichang 443002, China

Received:2023-05-16 Accepted:2023-10-10 Online:2024-03-28 Published:2024-03-26
Supported by:
This work is supported by National Natural Science Foundation of China (No.61773080), Open Fund of Hubei Provincial Key Laboratory for Operation and Control of Cascade Hydropower Stations (No.2022KJX05).

摘要/Abstract

摘要：

针对混合微电网集中控制对中央控制器依赖严重、通信需求量大、扰动调节能力差的问题，提出一种微电网中央控制器（microgrid central control，MGCC）参与的分层事件触发控制策略，有效降低分布式集群的冗余通信并减少中央控制器计算负担，改进策略可靠性。该策略将控制系统分为2层，其中，设备层为本地控制层，采用分布式协同控制，所设计的本地控制器可就地控制更新输出状态，实现混合微电网的分散自治运行；另外，在控制层建立微电网控制层，引入事件触发策略，协调MGCC获取混合微电网的全局信息，从而向本地控制器发出预定义的调控指令，实现“源网荷储”灵活调度，尤其是应对突发事件而引发的电网振荡。最后，采用Matlab搭建混合微电网模型并进行仿真，利用Stateflow模块实现了事件触发算法，验证控制策略在满足并网/孤岛模式可靠性、稳定性的前提下，系统通信量可降低56.4%。

关键词: "源网荷储"微电网, 事件触发策略, 分层结构, 微电网中央控制器

Abstract:

A hierarchical event-triggered control strategy involving the microgrid central control (MGCC) is proposed to address the issues of strong dependence on central controllers, high communication demand, and poor disturbance regulation ability in centralized control of hybrid microgrid, which effectively reduces the redundant communication in distributed clusters and the computational burden on central controllers, and improves the reliability of strategy. The proposed strategy divides the control system into two layers. The device layer is the local control layer, which adopts the distributed collaborative control. The designed local controller can locally control and update the output status, achieving decentralized and autonomous operation of the hybrid microgrid. In addition, a microgrid control layer is established in the control layer, and an event-triggered strategy is introduced to coordinate MGCC to obtain the global information of the hybrid microgrid and issue predefined control instructions to the local controllers, achieving the flexible scheduling of "source-grid-load-storage", especially in response to grid oscillations caused by unexpected events. Finally, a hybrid microgrid model is built using the Matlab for simulation and the Stateflow module is used to realize the event-triggered strategy, It is verified that the proposed control strategy can reduce the system communication traffic by 56.4% while meeting the reliability and stability of grid connection/island mode.

Key words: source-grid-load-storage microgrid, event-triggered strategy, hierarchical structure, microgrid central controller

李一鸣, 何奇, 王海亮, 钟浩, 马辉, 黄悦华. 基于分层事件触发的混合微电网集中控制策略[J]. 中国电力, 2024, 57(3): 73-82.

Yiming LI, Qi HE, Hailiang WANG, Hao ZHONG, Hui MA, Yuehua HUANG. Centralized Control Strategy for Hybrid Microgrid Based on Layered Event Triggering[J]. Electric Power, 2024, 57(3): 73-82.

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https://www.electricpower.com.cn/CN/Y2024/V57/I3/73

图/表 14

图 1 基于分层事件触发的混合微电网控制策略

Fig.1 Control strategy of the hybrid microgrid based on hierarchical event-triggered strategy

图 2 事件触发策略的采样与传输

Fig.2 Sampling and transmission of the event-triggered strategy

图 3 升压控制器控制框图

Fig.3 Control frame model of LCBO

图 4 风机控制器控制框图

Fig.4 Control frame model of LCWT

图 5 双向控制器控制框图

Fig.5 Control frame model of LCBI

图 6 换流控制器控制框图

Fig.6 Control frame model of LCINV

表 1 事件触发信号

Table 1 Event-triggered signals

事件	信号	具体含义
E_p	1/0	主电网电价价格高/低
S_och	1/0	储能荷电状态高/低于75%
S_ocl	1/0	储能荷电状态高/低于25%
P_cc	1/0	与主电网相连/断开
S_bo	1/0	光伏接入线路连接/断开
S_bi	1/0	储能接入线路连接/断开
O_d	1/0	有/无过放电现象

图 7 并网模式内模式转换

Fig.7 Mode transition in grid-connected mode

图 8 孤岛模式内模式转换

Fig.8 Mode transition in islanding mode

表 2 FSM中事件输入集E

Table 2 Event input set E in FSM

转换条件	当前状态	转换状态	状态输出
转换条件	当前状态	转换状态	LC_BO	LC_WT	LC_BI	LC_INV
f₁	m₁₀	m₁₁	S₁	S₃	S₅	S₆
f₂	m₁₁	m₁₀	S₁	S₃	S₄	S₆
f₃	m₁₀	m₁₂	S₂	S₃	S₅	S₆
f₄	m₁₂	m₁₃	S₂	S₃	S₄	S₆
f₅	m₁₀	m₂₀	S₁	S₃	S₄	S₇
f₆	m₂₀	m₂₁	S₂	S₃	S₅	S₇
f₇	m₂₁	m₂₂		S₃	S₄	S₇
f₈	m₂₂	m₂₃	S₂	S₃		S₇
f₉	m₂₃	m₂₀	S₁	S₃	S₄	S₇
f₁₀	M₁、 M₂	m₃₀

图 9 有限状态机中状态转换

Fig.9 State transitions in FSM

图 10 并网模式仿真验证波形

Fig.10 Grid-connected mode simulation verification waveform

图 11 孤岛模式仿真验证波形

Fig.11 Islanding mode simulation verification waveform

图 12 通信次数对比

Fig.12 Comparison of the number of communications

参考文献 21

1	陈杰, 钮博文, 张俊文, 等. 微电网运行模式平滑转换的混合控制策略[J]. 中国电机工程学报, 2015, 35 (17): 4379- 4387. DOI
	CHEN Jie, NIU Bowen, ZHANG Junwen, et al. Hybrid control strategy for the seamless transfer of microgrids[J]. Proceedings of the CSEE, 2015, 35 (17): 4379- 4387. DOI
2	杨向真, 李玉宁, 杜燕, 等. 交直流混合微电网多模式功率协调控制策略[J]. 高电压技术, 2021, 47 (4): 1262- 1274.
	YANG Xiangzhen, LI Yuning, DU Yan, et al. Multi-mode power coordination control strategy for AC/DC hybrid microgrid[J]. High Voltage Engineering, 2021, 47 (4): 1262- 1274.
3	刘慧文, 王生铁, 刘广忱, 等. 风光柴储微电网容量优化配置的运行策略[J]. 太阳能学报, 2022, 43 (9): 453- 460.
	LIU Huiwen, WANG Shengtie, LIU Guangchen, et al. Operation strategy of optimal capacity allocation of wind, solar and diesel storage microgrid[J]. Acta Energiae Solaris Sinica, 2022, 43 (9): 453- 460.
4	邱星宇, 吴毓峰, 王梓耀, 等. 计及并离网频率约束的微电网容量优化配置方法[J]. 电力系统保护与控制, 2023, 51 (21): 166- 177.
	QIU Xingyu, WU Yufeng, WANG Ziyao, et al. Optimal configuration method of microgrid capacity considering grid connection and islanding frequency constraints[J]. Power System Protection and Control, 2023, 51 (21): 166- 177.
5	毕永健, 徐丙垠, 赵艳雷, 等. 同步定频微电网的并网/孤岛无缝切换控制策略[J]. 电网技术, 2022, 46 (3): 923- 933. DOI
	BI Yongjian, XU Bingyin, ZHAO Yanlei, et al. Seamless transfer control strategy between grid-connected and islanding operation for synchronous fixed-frequency microgrid[J]. Power System Technology, 2022, 46 (3): 923- 933. DOI
6	CINTUGLU M H, YOUSSEF T, MOHAMMED O A. Development and application of a real-time testbed for multiagent system interoperability: a case study on hierarchical microgrid control[J]. IEEE Transactions on Smart Grid, 2018, 9 (3): 1759- 1768. DOI
7	时远海, 刘波, 姚贤炯. 微电网通信体系架构及通信技术体制分析[J]. 电力信息与通信技术, 2018, 16 (4): 9- 14. DOI
	SHI Yuanhai, LIU Bo, YAO Xianjiong. Analysis of micro grid communication architecture and communication technology[J]. Electric Power Information and Communication Technology, 2018, 16 (4): 9- 14. DOI
8	HE J W, PAN Y W, LIANG B H, et al. A simple decentralized islanding microgrid power sharing method without using droop control[J]. IEEE Transactions on Smart Grid, 2018, 9 (6): 6128- 6139. DOI
9	郭伟, 赵洪山. 基于事件触发机制的直流微电网多混合储能系统分层协调控制方法[J]. 电工技术学报, 2020, 35 (5): 1140- 1151. DOI
	GUO Wei, ZHAO Hongshan. Coordinated control method of multiple hybrid energy storage system in DC microgrid based on event-triggered mechanism[J]. Transactions of China Electrotechnical Society, 2020, 35 (5): 1140- 1151. DOI
10	陈郁林, 谷雨润, 闫云凤, 等. 有向通信拓扑下基于分布式触发控制的微电网二次控制方法[J]. 电子与信息学报, 2022, 44 (11): 3806- 3814. DOI
	CHEN Yulin, GU Yurun, YAN Yunfeng, et al. Secondary control method of microgrid based on distributed trigger control under directed communication topology[J]. Journal of Electronics & Information Technology, 2022, 44 (11): 3806- 3814. DOI
11	刘子文, 苗世洪, 范志华, 等. 孤立交直流混合微电网双向AC/DC换流器功率控制与电压波动抑制策略[J]. 中国电机工程学报, 2019, 39 (21): 6225- 6238.
	LIU Ziwen, MIAO Shihong, FAN Zhihua, et al. Power control and voltage fluctuation suppression strategy of the bidirectional AC/DC converter in the islanding hybrid microgrid[J]. Proceedings of the CSEE, 2019, 39 (21): 6225- 6238.
12	郭力, 张绍辉, 李霞林, 等. 考虑电网分时电价的直流微电网分层协调控制[J]. 电网技术, 2016, 40 (7): 1992- 2000.
	GUO Li, ZHANG Shaohui, LI Xialin, et al. Hierarchical coordination control for DC microgrid considering time-of-use price[J]. Power System Technology, 2016, 40 (7): 1992- 2000.
13	SALEH M, ESA Y, MOHAMED A A. Communication-based control for DC microgrids[J]. IEEE Transactions on Smart Grid, 2019, 10 (2): 2180- 2195. DOI
14	PENG J K, FAN B, XU H, et al. Discrete-time self-triggered control of DC microgrids with data dropouts and communication delays[J]. IEEE Transactions on Smart Grid, 2020, 11 (6): 4626- 4636. DOI
15	张占强, 窦春霞, 岳东, 等. 考虑通信时延的事件触发电压分布式协同控制[J]. 中国电机工程学报, 2020, 40 (17): 5426- 5435.
	ZHANG Zhanqiang, DOU Chunxia, YUE Dong, et al. Event-triggered voltage distributed cooperative control with communication delay[J]. Proceedings of the CSEE, 2020, 40 (17): 5426- 5435.
16	黄悦华, 李光勖, 黎欢欢, 等. 风力发电系统最大功率点跟踪策略[J]. 电测与仪表, 2012, 49 (5): 17- 20.
	HUANG Yuehua, LI Guangxu, LI Huanhuan, et al. Wind power generation system maximum power point tracking strategy[J]. Electrical Measurement & Instrumentation, 2012, 49 (5): 17- 20.
17	岳怀瑜, 刘莎莎, 吴启亮. 混合微网含储能系统互联接口变换器的双阈值窗控制策略[J]. 中国电力, 2022, 55(10): 132-141.
	YUE Huaiyu, LIU Shasha, WU Qiliang. Dual-threshold window control strategy of interlinking converter with energy storage system in hybrid microgrid[J] , Electric Power, 2022, 55(10): 132-141.
18	张宇, 王洪希, 王璞. 交直流混合微电网互联变流器微分平坦控制[J]. 中国电力, 2022, 55 (7): 102- 109,120.
	ZHANG Yu, WANG Hongxi, WANG Pu. Flatness-based control of AC/DC hybrid microgrid interconnected converter[J]. Electric Power, 2022, 55 (7): 102- 109,120.
19	王睿, 孙秋野, 马大中, 等. 微网中分布式电源锁相环建模及其稳定性分析[J]. 中国电机工程学报, 2018, 38 (24): 7338- 7348, 7460.
	WANG Rui, SUN Qiuye, MA Dazhong, et al. Modeling and stability analysis of distributed generation phase locked loop in microgrid[J]. Proceedings of the CSEE, 2018, 38 (24): 7338- 7348, 7460.
20	张锦坤, 杨孟飞, 乔磊, 等. 基于有限状态机的操作系统需求层形式化验证[J]. 空间控制技术与应用, 2019, 45 (2): 48- 55. DOI
	ZHANG Jinkun, YANG Mengfei, QIAO Lei, et al. Formal verification of operating system requirements layer based on finite state machine[J]. Aerospace Control and Application, 2019, 45 (2): 48- 55. DOI
21	刘海涛, 熊雄, 季宇. 基于有限状态机转换矩阵建模的直流配电系统精细化控制[J]. 中国电力, 2021, 54 (10): 89- 96.
	LIU Haitao, XIONG Xiong, JI Yu. Precise control of DC distributed system based on finite state machine matrix modeling[J]. Electric Power, 2021, 54 (10): 89- 96.

基于分层事件触发的混合微电网集中控制策略

Centralized Control Strategy for Hybrid Microgrid Based on Layered Event Triggering

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基于分层事件触发的混合微电网集中控制策略

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