面向工程应用的MMC-BESS的SOC均衡控制参数设计

doi:10.11930/j.issn.1004-9649.202304076

中国电力 ›› 2023, Vol. 56 ›› Issue (11): 168-176.DOI: 10.11930/j.issn.1004-9649.202304076

面向工程应用的MMC-BESS的SOC均衡控制参数设计

金雪芬¹(), 季建辉²(), 李兰芳², 李奇南², 张帆², 詹雄²(), 黄均纬³

1. 国网电力科学研究院中电普瑞科技有限公司，北京　102200
2. 国网电力科学研究院中电普瑞电力工程有限公司，北京　102200
3. 国网福建省电力有限公司科学研究院，福建福州　350007

收稿日期:2023-04-20 出版日期:2023-11-28 发布日期:2023-11-28
作者简介:金雪芬（1984—），女，硕士，高级工程师，从事新型电力系统装备研究，E-mail： xiaopangcumt@163.com
詹雄（1979—），男，通信作者，硕士，高级工程师（教授级），从事高压大容量储能技术研究及设备开发，E-mail： zxhn2029@sina.com
基金资助:
国家电网有限公司科技项目（集成模块化多电平换流器的新型储能系统拓扑与自适应控制关键技术研究，5419-202221068A-1-1-ZN）。

Parameter Design of SOC Balance Control for MMC-BESS Engineering Applications

Xuefen JIN¹(), Jianhui JI²(), Lanfang LI², Qinan LI², Fan ZHANG², Xiong ZHAN²(), Junwei HUANG³

1. State Grid Electric Power Research Institute, China EPRI Science & Technology Co., Ltd., Beijing 102200, China
2. State Grid Electric Power Research Institute, C-EPRI Electric Power Engineering Co., Ltd., Beijing 102200, China
3. State Grid Fujian Electric Power Research Institute, Fuzhou 350007, China

Received:2023-04-20 Online:2023-11-28 Published:2023-11-28
Supported by:
This work is supported by Science and Technology Projects of SGCC (Research on Key Technologies of Topology and Adaptive Control for a New Energy Storage System with Integrated Modular Multilevel Converter, No.5419-202221068A-1-1-ZN).

摘要/Abstract

摘要：

针对模块化多电平电池储能系统（MMC-BESS）技术实际工程应用问题，从调制、效率、子模块电容电压均衡及器件选型4个维度，为荷电状态（SOC）均衡控制参数设计提供理论依据及操作性强的实用设计步骤和方法，并提出了控制参数分段的桥臂内子模块间SOC均衡控制方法，用于提高SOC均衡控制速度，以拟建的示范工程为示例，进行控制参数设计，并通过仿真验证控制参数设计的合理性及分段控制参数加速SOC均衡控制的有效性。

关键词: MMC-BESS, SOC均衡控制, 参数设计, 稳定

Abstract:

In view of the engineering application of MMC-BESS technology, this paper provides theoretical basis and practical steps and methods for SOC balance control parameter design from four dimensions of modulation, efficiency, submodule capacitor voltage balancing, and device selection. To improve the speed of SOC balance control, the SOC balance control method of setting different control parameters in sections between submodules in the bridge arm is proposed. Based on the proposed demonstration project, the control parameters are designed. In addition, the rationality of control parameter design and the effectiveness of segmented control parameters to accelerate SOC balance control are verified by simulation.

Key words: MMC-BESS, SOC balance control, parameter design, stability

金雪芬, 季建辉, 李兰芳, 李奇南, 张帆, 詹雄, 黄均纬. 面向工程应用的MMC-BESS的SOC均衡控制参数设计[J]. 中国电力, 2023, 56(11): 168-176.

Xuefen JIN, Jianhui JI, Lanfang LI, Qinan LI, Fan ZHANG, Xiong ZHAN, Junwei HUANG. Parameter Design of SOC Balance Control for MMC-BESS Engineering Applications[J]. Electric Power, 2023, 56(11): 168-176.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202304076

https://www.electricpower.com.cn/CN/Y2023/V56/I11/168

图/表 9

图 1 MMC-BESS拓扑

Fig.1 Topology of MMC-BESS

图 2 MMC-BESS 三级SOC均衡控制框图

Fig.2 Three-level SOC balance control of MMC-BESS

表 1 MMC-BESS系统参数

Table 1 System parameters of MMC-BESS

名称		参数
交流并网线电压/kV		6
直流并网电压/kV		12
MMC-BESS单机功率/kW		8000
变压器容量/MW		9
电压变比（网/阀）/(kV·kV^–1)		10/6
短路阻抗/%		7.5
联结组别（网/阀）		DY0
IGBT型号		3300 V/1500 A
子模块额定电容电压/kV		1
单桥臂子模块数		12
额定总电流有效值/A		458
额定交流电流峰值/A		566
电容/mF		18
电池单体最高电压/V		3.5
电池单体最低电压/V		3
电池单体标称电压/V		3.2
电池容量规格/(A·h)		92
子模块电池能量/(kW·h)		122.47
储能系统总容量/(kW·h)		8817.87
电池簇额定工作电流/A		83.47
子模块单体数量P，S		1，416
子模块电池组总内阻/Ω		0.48
单桥臂连接电抗/mH		3
滤波电感值/mH		7

表 2 SOC初始值

Table 2 Initial values of SOC

S_OCpa	S_OCpb	S_OCpc	S_OCna	S_OCnb
0.883 3	0.9	0.9	0.9	0.9000

S_OCnc	S_OCa	S_OCb	S_OCc	S_OCBESS
0.9000	0.891 7	0.9	0.9	0.897 2

表 3 分段控制参数值

Table 3 Segmented control parameters

ΔS_OCmax/%	K_p3	ΔS_OCmax/%	K_p3
10	1.0	3	3.7
5	2.0	2	5.7
4	2.6	1	11.5

图 3 A相上桥臂SOC均衡控制后标幺化调制波

Fig.3 Per-united modulation waves of phase A up-bridge arm with SOC balance control

图 4 SOC均衡控制后A相上桥臂子模块电容电压

Fig.4 Submodule capacitor voltage of phase A up-bridge arm with SOC balance control

图 5 各相、桥臂和A相上桥臂各子模块SOC值

Fig.5 SOC values of each phase, bridge arm, and each submodule of phase A up-bridge arm

图 6 分段控制与恒定控制参数SOC均衡控制效果对比

Fig.6 Effect comparison of SOC balance control between segmented control parameters and constant control parameters

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面向工程应用的MMC-BESS的SOC均衡控制参数设计

Parameter Design of SOC Balance Control for MMC-BESS Engineering Applications

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面向工程应用的MMC-BESS的SOC均衡控制参数设计

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