基于投切交换数优化的MMC均压策略

常立国; 徐鸿; 孙小平; 郑全旭; 涂小刚

doi:10.13296/j.1001-1609.hva.2026.06.015

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基于投切交换数优化的MMC均压策略

研究与分析 | 更新时间：2026-06-10

- 基于投切交换数优化的MMC均压策略
- MMC Voltage Balancing Strategy Based on Switching Number Optimization
- 高压电器 2026年62卷第6期页码：122-129
- 作者机构：
  
  西安西电电力系统有限公司，西安 710065
  南方电网超高压输电公司，广州 510663
- 作者简介：
  
  常立国（1985—），男，硕士，高级工程师，主要从事柔性直流输电控制保护的研究（通信作者）（E-mail：changlg@xd.cee-group.cn）。
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.06.015
  中图分类号：
- 收稿：2025-11-03，
  
  修回：2026-01-17，
  
  纸质出版：2026-06-16
- 稿件说明：
移动端阅览
常立国, 徐鸿, 孙小平, 等. 基于投切交换数优化的MMC均压策略[J]. 高压电器, 2026,62(6):122-129.

CHANG Liguo, XU Hong, SUN Xiaoping, et al. MMC Voltage Balancing Strategy Based on Switching Number Optimization[J]. High Voltage Apparatus, 2026, 62(6): 122-129.
常立国, 徐鸿, 孙小平, 等. 基于投切交换数优化的MMC均压策略[J]. 高压电器, 2026,62(6):122-129. DOI： 10.13296/j.1001-1609.hva.2026.06.015.

CHANG Liguo, XU Hong, SUN Xiaoping, et al. MMC Voltage Balancing Strategy Based on Switching Number Optimization[J]. High Voltage Apparatus, 2026, 62(6): 122-129. DOI： 10.13296/j.1001-1609.hva.2026.06.015.

摘要

模块化多电平换流器（modular multilevel converter，MMC）控制指标中子模块均压效果和绝缘栅双极型晶体管（insulated gate bipolar transistor，IGBT）开关频率相互制约，为了能在保证均压效果的同时降低开关频率，文中提出了一种基于投切交换数优化的均压策略。文中通过分析均压效果变化趋势，并对IGBT开关变位进行分类，提出用当前桥臂电流值来计算投入模块和切除模块的投切交换数。当桥臂电流值小于设定值，根据调制变化就能达到均压效果时，将投切交换数置零；否则根据桥臂电流值实时修正均压阈值，并根据修正后的均压阈值、桥臂电流方向、投入模块数修正值和子模块电压排序结果来计算投切交换数。最后根据投入模块数修正值和投切交换数来刷新触发脉冲。本策略可在不同功率水平下保证均压效果的稳定，同时有效降低开关频率。最后通过构建基于RTLAB实时仿真系统的半实物仿真平台验证了所提策略的有效性。

Abstract

In the control incices of the modular multilevel converter (MMC)

the voltage balancing effect of the submodel and switching frequency of the insulated gate bipolar transistor (IGBTs) impose mutual constraints. To reduce the switching frequency while maintaining the voltage balancing effect

in this paper a voltage balancing strategy based on the optimization switching number is proposed. By analyzing the variation trend of voltage balancing effect and classifying the switching actions of IGBT

it is proposed to use the current arm current value to calculate the the switching number between inserted modules and removed modules. When arm current value is less than the set value and voltage balancing effect of SMs can be achieved in accordnce with modulation variation

the switching number is set to zero. Otherwise the threshold of voltage balancing effect is corrected in accordance with real-time arm current value

and the switching numbers are calculated based on the corrected voltage threshold

the direction of arm current

the corrected number of inserted modules and the sorting results of the submodule voltages. Finally

the trigger pulses are refreshed based on the corrected number of inserted modules and the switching number. This strategy can ensure the stability of voltage balancing at different power levels and

at the same time

reduce effectively switching frequency. The effectiveness of the proposed strategy is verified by constructing a simulation platform based on RTLAB real-time simulation system.

关键词

Keywords

references

刘宇昂,戴志辉,杨明玉,等.柔性直流电网故障电流复合抑制策略[J].电力系统保护与控制,2024,52(11):93-101.

LIU Yuang, DAI Zhihui, YANG Mingyu, et al.Composite faultcurrent suppression strategy for flexible DC grids[J]. Power System Protection and Control,2024,52(11):93-101.

涂小刚,宋志顺,常立国,等.半全桥子模块混合型柔性直流换流阀的充电策略研究与样机实验验证[J].高压电器,2019,55 (10):111-115.

TU Xiaogang, SONG Zhishun, CHANG Liguo, et al.Charging strategy for hybrid-MMC valve composed of HBSM and FBSM with experimental verification[J]. High Voltage Apparatus,2019,55 (10):111-115.

戴志辉,石浚阳,史琛,等.基于限流式潮流控制器的柔直配电系统故障穿越与恢复方案[J].电力系统保护与控制,2025,53 (20):34-45.

DAI Zhihui, SHI Junyang, SHI Chen, et al. A fault ride-through and recovery scheme for flexible DC distribution systems based on current limiting power flow controllers[J]. Power System Protection and Control,2025,53(20):34-45.

涂小刚,宋志顺,常立国,等.特高压柔直换流站第二阀组充电策略研究与样机实验验证[J].高压电器,2021,57(11):101-107.

TU Xiaogang, SONG Zhishun, CHANG Liguo, et al.Charging strategy study of the second valve group of UHV DC converter station and experimental verification of prototype[J]. High Voltage Apparatus,2021,57(11):101-107.

熊俊,钟璐,梁晓斌,等.计及直流电流暂态冲击的柔性直流输电系统改进卸荷保护方法[J].智慧电力,2024,52(5):74-81.

XIONG Jun, ZHONG Lu, LIANG Xiaobin, et al.Improved unloading protection method for MMC-HVDC considering DC current transient impulses[J]. Smart Power,2024,52(5):74-81.

于婧,林鸿飞,王潇,等.直驱风电场经柔直送出系统近工频正/负序振荡机理分析[J].电力建设,2024,45(2):10-25.

YU Jing, LIN Hongfei, WANG Xiao, et al. Mechanism analysis of near fundamental-frequency positive/negative-sequence oscillations inMMC-HVDCconnected direct-drive wind farm[J]. Electric Power Construction,2024,45(2):10-25.

李从善,甄子凯,和萍,等.风电与多端柔性直流输电系统自适应分频协调控制策略研究[J].电力科学与技术学报,2024,39 (1):65-73.

LI Congshan, ZHEN Zikai, HE Ping, et al. Research on adaptive frequency division coordinated control strategy for wind power and multi terminal flexible HVDC transmission system[J]. Journal of Electric Power Science and Technology,2024,39(1):65-73.

刘会强,李丹丹,刘石川,等.基于MMC的多端柔性直流配电网控制与保护[J].电力电容器与无功补偿,2024,45(2):84-90.

LIU Huiqiang, LI Dandan, LIU Shichuan, et al. Control and protection of multiple-terminal flexible DC distribution network based on MMC[J]. Power Capacitor & Reactive Power Compensation,2024,45 (2):84-90.

王硕,何柏娜,程婷,等.MMC-HVDC双极故障条件下自适应限流控制策略[J].电力工程技术,2024,43(6):53-63.

WANG Shuo, HE Baina, CHENG Ting, et al. Adaptive current limiting control strategy forMMC-HVDCunder bipolar fault conditions[J]. Electric Power Engineering Technology,2024,43(6):53-63.

胡宏,许凌,张梦瑶,等.海上风电柔性直流送出系统控制耦合作用及差动保护适应性分析[J].电力建设,2025,46(3):166-176.

HU Hong, XU Ling, ZHANG Mengyao, et al. Study of control coupling effect and differential protection adaptability of offshore wind farm withMMC - HVDCtransmission system[J]. Electric Power Construction,2025,46(3):166-176.

熊俊,甘文风,陈愚,等.受端电网故障下真双极柔性直流输电系统电压协同控制方法[J].电网与清洁能源,2024,40(5):32-41.

XIONG Jun, GAN Wenfeng, CHEN Yu, et al. A voltage collaborative control method for symmetrical bipolarMMC-HVDC under the receiving-end grid fault[J]. Power System and Clean Energy,2024,40(5):32-41.

阚鹏,郑华俊,袁旭峰,等.不同模型对MMC-HVDC系统大信号稳定性分析准确性影响的对比研究[J].智慧电力,2024,52 (5):105-113.

KAN Peng, ZHENG Huajun, YUAN Xufeng, et al.Comparative study on impact of different models on large signal stability analysis accuracy inMMC-HVDCsystems[J]. Smart Power,2024, 52(5):105-113.

余昆,薛卜,顾昉渊,等.MMC整流器开关器件的损耗及温升建模研究[J].电力工程技术,2021,40(4):18-25.

YU Kun, XUE Bu, GU Fangyuan, et al. The loss and temperature rise modeling of MMC rectifier switching devices[J]. Electric Power Engineering Technology,2021,40(4):18-25.

郭裕群,赵成勇,许建中,等.模块化多电平换流器子模块平均开关频率的精确控制方法[J].电力系统自动化,2016,40(19):94-100.

GUO Yuqun, ZHAO Chengyong, XU Jianzhong, et al.Precision control method of average sub-module switching frequency for modular multilevel converters[J]. Automation of Electric Power Systems,2016,40(19):94-100.

屠卿瑞,徐政,郑翔,等.一种优化的模块化多电平换流器电压均衡控制方法[J].电工技术学报,2011,26(5):15-20.

TU Qingrui, XU Zheng, ZHENG Xiang, et al. An optimized voltage balancing method for modular multilevel converter[J]. Transactions of China Electrotechnical Society,2011,26(5):15-20.

林周宏,刘崇茹,李海峰,等.模块化多电平换流器的子模块电容电压分层均压控制法[J].电力系统自动化,2015(7):175-181.

LIN Zhouhong, LIU Chongru, LI Haifeng, et al. A stratified voltage balancing control method of sub-module capacitor voltage for modular multilevel converter[J]. Automation of Electric Power Systems,2015(7):175-181.

喻锋,王西田,林卫星,等.一种快速的模块化多电平换流器电压均衡控制策略[J].中国电机工程学报,2015,35(4):929-934.

YU Feng, WANG Xitian, LIN Weixing, et al. A fast voltage balancing control method for modular multilevel converter[J]. Proceedings of the CSEE,2015,35(4):929-934.

罗永捷,李耀华,李子欣,等.适用于高压大容量MMC-HVDC系统的改进低开关频率均压控制策略[J].中国电机工程学报, 2017,37(5):1341-1350.

LUO Yongjie, LI Yaohua, LI Zixin, et al. An improved reduced switching frequency voltage balancing control strategy for bulk powerMMC-HVDCsystems[J]. Proceedings of the CSEE,2017,37 (5):1341-1350.

常立国,苟锐锋,杨晓平,等.适用于MMC-HVDC的优化均压策略[J].高电压技术,2020,46(5):1720-1729.

CHANG Liguo, GOU Ruifeng, YANG Xiaoping, et al. Optimized voltage balancing strategy forMMC - HVDC[J]. High Voltage Engineering,2020,46(5):1720-1729.

蒲羿,罗永捷,熊小伏,等.基于电压收敛性预测的MMC低开关频率均压控制策略[J].电网技术,2020,44(11):4347-4358.

PU Yi, LUO Yongjie, XIONG Xiaofu, et al. Reduced switching frequency voltage balancing control strategy based on voltage convergence prediction for modular multilevel converters[J]. Power System Technology,2020,44(11):4347-4358.

刘钟淇,宋强,刘文华.基于模块化多电平变流器的轻型直流输电系统[J].电力系统自动化,2010,34(2):53-58.

LIU Zhongqi, SONG Qiang, LIU Wenhua. VSC-HVDC system based on modular multilevel converters[J]. Automation of Electric Power Systems,2010,34(2):53-58.

管敏渊,徐政. MMC型VSC-HVDC系统电容电压的优化平衡控制[J].中国电机工程学报,2011,31(12):9-14.

GUAN Minyuan, XU Zheng. Optimized capacitor voltage balancing control for modular multilevel converter basedVSC-HVDCsystem[J]. Proceedings of the CSEE,2011,31(12):9-14.

管敏渊,徐政,屠卿瑞,等.模块化多电平换流器型直流输电的调制策略[J].电力系统及其自动化学报,2010,34(2):48-52.

GUAN Minyuan, XU Zheng, TU Qingrui, et al. Nearest level modulation for modular multilevel converters in HVDC transmission[J]. Automation of Electric Power Systems,2010,34(2):48-52.

荣飞,徐业事,黄守道,等.采用基数排序算法的MMC优化均压策略[J].电力系统及其自动化学报,2018,30(3):42-49.

RONG Fei, XU Yeshi, HUANG Shoudao, et al. Optimized voltage balancing strategy based on radix sort algorithm for modular multilevel converter[J]. Proceedings of the CSU-EPSA,2018,30 (3):42-49.

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