电源学报

桥臂复用MMC三相短路故障特性及穿越策略

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张后谊 ¹ , 李继凯 ² , 徐玉韬 ¹ , 闫鑫 ² , 冯起辉 ¹

电源学报 | AC-DC变换器 2025,23(8): 93-104

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电源学报 |AC-DC变换器 2025 , 23 (8) : 93 -104

桥臂复用MMC三相短路故障特性及穿越策略

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张后谊¹, 李继凯², 徐玉韬¹, 闫鑫², 冯起辉¹

作者信息

^1.贵州电网有限责任公司电力科学研究院，贵阳　550002

^2.许继电气股份有限公司，许昌　461000

通讯作者:

李继凯（1989—　），男，通信作者，本科，工程师。研究方向：电力电子技术。Email：lijikai1989@126.com。

作者简介:

张后谊（1995—　），男，硕士，工程师。研究方向：电网稳定性分析，微电网优化运行。Email：1614559912@qq.com。

徐玉韬（1982—　），男，硕士，高级工程师。研究方向：柔性配电网。Email：yutaoxu@126.com。

闫鑫（1989—　），男，本科，中级工程师。研究方向：中压配网柔性直流换流器，融冰装置和隔直装置。Email：jdyanxin@163.com。

冯起辉（1994—　），男，硕士，工程师。研究方向：电力系统自动化，电力电子技术。Email：fonqeeh@163.com。

Characteristics of Arm Multiplexing MMC under Three-phase Short-circuit Faults and Corresponding Fault Ride-through Strategy

Houyi ZHANG¹, Jikai LI², Yutao XU¹, Xin YAN², Qihui FENG¹

Affiliations

^1.Electric Power Research Institute, Guizhou Power Grid Co., Ltd., Guiyang 550002, China

^2.Xuji Electric Co., Ltd., Xuchang 461000, China

出版时间: 2025-12-30 doi: 10.13234/j.issn.2095-2805.2025.8.93

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摘要

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随着模块化多电平换流器MMC（modular multilevel converter）在工程实际中设备体积大、运行成本高等问题日益凸显，新型电力系统产生了MMC轻型化需求。桥臂复用型模块化多电平换流器AM-MMC（arm multiplexing MMC）能提高子模块利用率，有效实现MMC轻型化，但因其拓扑复杂，且内部能量易受运行工况变化影响而波动，尤其在交流系统故障的情况下，能量波动更为剧烈甚至易复用出错，所以对AM-MMC的交流故障穿越能力的要求更高。针对故障情况最为严重的交流系统三相短路故障，分析了故障后换流器的故障特性，提出1种基于快速闭锁机制的故障电容优化配置策略，在故障期间复用模式调整与快速闭锁同步进行，实现AM-MMC在交流系统三相短路后的故障穿越。最后，为了验证所提策略，使用MATLAB/Simulink构建了单端仿真模型，仿真结果表明切换复用方式后闭锁能有效解决AM-MMC的三相短路故障穿越问题。

关键词

桥臂复用型模块化多电平换流器 / 轻型化 / 三相短路 / 故障穿越

Abstract

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In practical engineering, the issues of large equipment volume and high operating costs increasingly highlight the demand for lightweight modular multilevel converters (MMCs) in new power systems. The arm multiplexing MMC (AM-MMC) can improve the utilization of submodules and effectively achieve lightweight MMC. However, due to its complex topology and susceptibility to fluctuations in internal energy caused by the changes in operating conditions, the energy fluctuations are more severe and even prone to reuse errors, especially in the event of AC system failures, increasing the requirements for the AC fault ride-through capability of AM-MMC. For the three-phase short-circuit fault of the AC system under the most serious fault condition, the fault characteristics of the converter after the fault are analyzed, and an optimal configuration strategy for the fault capacitor based on a fast blocking mechanism is proposed. During the fault period, the multiplexing mode adjustment and the fast blocking are carried out simultaneously to realize the fault ride-through of the AM-MMC after the three-phase short-circuit of the fault ride-through AC system. Finally, to validate the proposed strategy, a singleended simulation model was constructed using MATLAB/Simulink. Simulation results demonstrate that re-locking the converter after switching the multiplexing mode can effectively resolve the three-phase short-circuit fault ridethrough issue in the AM-MMC.

Key words

Arm multiplexing modular multilevel converter (AM-MMC) / lightweight / three-phase short-circuit / fault ride through

引用本文

张后谊, 李继凯, 徐玉韬, 闫鑫, 冯起辉. 桥臂复用MMC三相短路故障特性及穿越策略. 电源学报, 2025 , 23 (8) : 93 -104 . DOI: 10.13234/j.issn.2095-2805.2025.8.93

Houyi ZHANG, Jikai LI, Yutao XU, Xin YAN, Qihui FENG. Characteristics of Arm Multiplexing MMC under Three-phase Short-circuit Faults and Corresponding Fault Ride-through Strategy[J]. Journal of Power Supply, 2025 , 23 (8) : 93 -104 . DOI: 10.13234/j.issn.2095-2805.2025.8.93

基金

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中国南方电网公司重点科技项目(GZKJXM20220041)
国家重点研发计划资助项目(2022YFE0205300)

参考文献

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参考文献引证文献

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2025年第23卷第8期

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文章信息

doi: 10.13234/j.issn.2095-2805.2025.8.93

接收时间：2024-04-03
首发时间：2026-10-26
出版时间：2025-12-30

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出版历史

收稿日期：2024-04-03
修回日期：2024-09-12
录用日期：2024-11-23

基金

Key Technology Projects of China Southern Power Grid Corporation(GZKJXM20220041)

中国南方电网公司重点科技项目(GZKJXM20220041)

National Key R&D Program(2022YFE0205300)

国家重点研发计划资助项目(2022YFE0205300)

作者信息

^1.贵州电网有限责任公司电力科学研究院，贵阳　550002

^2.许继电气股份有限公司，许昌　461000

通讯作者:

李继凯（1989—　），男，通信作者，本科，工程师。研究方向：电力电子技术。Email：lijikai1989@126.com。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.8.93

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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