不平衡电网下MMC的PCHD模型无源滑模控制策略

doi:10.11930/j.issn.1004-9649.202302084

摘要/Abstract

摘要： 电网电压不平衡时，以模块化多电平换流器（modular multilevel converter，MMC）作为换流装置的直流输配电系统会出现交流电流不对称、有功无功二次脉动等问题。为此，提出一种基于端口受控耗散哈密顿（port-controlled hamiltonian with dissipation，PCHD）模型的无源控制（passivity-based control，PBC）和滑模控制（sliding-mode control，SMC）的混合控制策略，设计出了PCHD模型下MMC控制系统的无源滑模变结构控制器规律，并通过仿真验证了所提方法较PI控制、无源控制等方法具有更加良好的控制效果。

关键词: 模块化多电平换流器, 电网电压不平衡, PCHD模型, 无源控制, 滑模控制

Abstract: When the voltage of the power grid is unbalanced, the DC transmission and distribution system using modular multilevel converters (MMC) as converter devices will encounter problems such as AC current asymmetry and secondary pulsation of active and reactive power. Therefore, a hybrid control strategy of passive based control (PBC) and sliding mode control (SMC) based on port controlled dissipative Hamiltonian with Dissipation (PCHD) model is proposed. A passive sliding mode variable structure controller for MMC control system under PCHD model is designed further. Through simulation, it is verified that the proposed method has better control performance than common methods such as PI control and passive control.

Key words: modular multilevel converter, grid voltage imbalance, PCHD model, passive control, sliding mode control

中图分类号:

TM46

刘道兵, 鲍妙生, 李世春, 郭汉琮, 郭营营, 齐越. 不平衡电网下MMC的PCHD模型无源滑模控制策略[J]. 中国电力, 2023, 56(8): 109-116.

LIU Daobing, BAO Miaosheng, Li Shichun, Guo Hancong, Guo Yingying, Qi Yue. Passive Sliding Mode Control Strategy for PCHD Model of MMC in Unbalanced Power Grid[J]. Electric Power, 2023, 56(8): 109-116.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202302084

https://www.electricpower.com.cn/CN/Y2023/V56/I8/109

参考文献

[1] 郭汉臣, 王琛, 范莹, 等. 可改善中压MMC谐波特性的无差拍控制策略[J]. 中国电力, 2022, 55(8): 165–170
GUO Hanchen, WANG Chen, FAN Ying, et al. Deadbeat control strategy for improving the harmonic characteristics of medium voltage MMC[J]. Electric Power, 2022, 55(8): 165–170
[2] 贺烨丹, 夏向阳, 尹旭, 等. 不对称电压暂降下最大功率输出的MMC协调控制策略[J]. 中国电力, 2022, 55(12): 160–167
HE Yedan, XIA Xiangyang, YIN Xu, et al. MMC coordinated control strategy for maximum power output under asymmetric voltage sag[J]. Electric Power, 2022, 55(12): 160–167
[3] 于飞, 王子豪, 刘喜梅. 新型模块化多电平换流器的设计与应用[J]. 电力系统保护与控制, 2022, 50(1): 69–77
YU Fei, WANG Zihao, LIU Ximei. A gradationally controlled modular multilevel converter and its application[J]. Power System Protection and Control, 2022, 50(1): 69–77
[4] 花雅文, 李庚, 韩国栋, 等. 混合背靠背模块化多电平变换器设计[J]. 智慧电力, 2021, 49(8): 70–76
HUA Yawen, LI Geng, HAN Guodong, et al. Design of hybrid back-to-back modular multilevel converter[J]. Smart Power, 2021, 49(8): 70–76
[5] 江畅, 程启明, 马信乔, 等. 不平衡电网电压下基于模块化多电平变流器的统一电能质量调节器的微分平坦控制[J]. 电工技术学报, 2021, 36(16): 3410–3421
JIANG Chang, CHENG Qiming, MA Xinqiao, et al. Differential flat control for unified power quality controller based on modular multilevel converter under unbalanced grid voltage[J]. Transactions of China Electrotechnical Society, 2021, 36(16): 3410–3421
[6] 薛花, 田广平, 扈曾辉, 等. 电网不平衡下模块化多电平变换器无源一致性控制方法[J]. 电力系统自动化, 2022, 46(3): 85–95
XUE Hua, TIAN Guangping, HU Zenghui, et al. Passivity-consensus based control method for modular multilevel converter in unbalanced power grid[J]. Automation of Electric Power Systems, 2022, 46(3): 85–95
[7] 孙栩, 朱晋, 刘文龙, 等. 一种具有故障隔离能力的MMC-HVDC换流站子模块拓扑研究[J]. 电力自动化设备, 2017, 37(3): 120–125
SUN Xu, ZHU Jin, LIU Wenlong, et al. Fault-isolated sub-module topology of MMC-HVDC converter station[J]. Electric Power Automation Equipment, 2017, 37(3): 120–125
[8] 张芳, 张光耀, 李传栋. MMC-HVDC的二阶线性自抗扰控制策略[J]. 电力自动化设备, 2017, 37(11): 92–98
ZHANG Fang, ZHANG Guangyao, LI Chuandong. Second-order linear active disturbance rejection control strategy of MMC-HVDC[J]. Electric Power Automation Equipment, 2017, 37(11): 92–98
[9] 李清, 张连升, 毛炽祖, 等. MMC-HVDC系统小信号阻抗建模及稳定性分析[J]. 南方电网技术, 2021, 15(7): 1–10
LI Qing, ZHANG Liansheng, MAO Chizu, et al. Small signal impedance modeling and stability analysis of MMC-HVDC system[J]. Southern Power System Technology, 2021, 15(7): 1–10
[10] LI J K, KONSTANTINOU G, WICKRAMASINGHE H R, et al. Impact of circulating current control in capacitor voltage ripples of modular multilevel converters under grid imbalances[J]. IEEE Transactions on Power Delivery, 2018, 33(3): 1257–1267.
[11] 宋平岗, 吴继珍, 邹欢. 电网电压不平衡时模块化多电平换流器直接功率补偿控制策略[J]. 高电压技术, 2016, 42(7): 2184–2192
SONG Pinggang, WU Jizhen, ZOU Huan. Direct power compensation control strategy for modular multilevel converter under unbalanced grid voltage conditions[J]. High Voltage Engineering, 2016, 42(7): 2184–2192
[12] 梁营玉. 不对称电网电压下基于降阶矢量谐振器的MMC-HVDC直接功率控制策略[J]. 中国电机工程学报, 2017, 37(24): 7294–7303, 7444
LIANG Yingyu. Direct power control strategy based on reduced order vector resonant controller for MMC-HVDC under unbalanced grid voltages[J]. Proceedings of the CSEE, 2017, 37(24): 7294–7303, 7444
[13] 李云丰, 安婷, 丁骁, 等. 电网电压不平衡MMC-HVDC无锁相环控制策略[J]. 高电压技术, 2016, 42(1): 105–111
LI Yunfeng, AN Ting, DING Xiao, et al. Control strategies of MMC-HVDC in the absence of PLL under unbalanced grid[J]. High Voltage Engineering, 2016, 42(1): 105–111
[14] BERGNA-DIAZ G, ZONETTI D, SANCHEZ S, et al. PI passivity-based control of modular multilevel converters for multi-terminal HVDC systems[C]//2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL). Stanford, CA, USA. IEEE, 2017: 1–8.
[15] 蔡新红, 赵成勇. 基于欧拉-拉格朗日模型的模块化多电平换流器的无源控制[J]. 电工技术学报, 2013, 28(10): 224–232
CAI Xinhong, ZHAO Chengyong. Euler-lagrange model based passive control for modular multilevel converter[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 224–232
[16] 祝贺, 王久和, 郑成才, 等. 五电平MMC-UPQC的无源控制[J]. 电工技术学报, 2017, 32(增刊2): 172–178
ZHU He, WANG Jiuhe, ZHENG Chengcai, et al. Passivity based control of five-level MMC-UPQC[J]. Transactions of China Electrotechnical Society, 2017, 32(S2): 172–178
[17] 程启明, 孙伟莎, 程尹曼, 等. 电网电压不平衡下MMC的无源控制策略[J]. 电力自动化设备, 2019, 39(4): 78–85
CHENG Qiming, SUN Weisha, CHENG Yinman, et al. Passive control strategy of MMC under unbalanced grid voltage[J]. Electric Power Automation Equipment, 2019, 39(4): 78–85
[18] ORTEGA R, VAN DER SCHAFT A, MASCHKE B, et al. Interconnection and damping assignment passivity-based control of port-controlled Hamiltonian systems[J]. Automatica, 2002, 38(4): 585–596.
[19] ZHANG Q, LIU G J. Precise control of elastic joint robot using an interconnection and damping assignment passivity-based approach[J]. IEEE/ASME Transactions on Mechatronics, 2016, 21(6): 2728–2736.
[20] 薛花, 潘哲晓, 王育飞, 等. 基于端口受控耗散哈密顿系统模型的模块化多电平变换器无源反步环流抑制方法[J]. 电工技术学报, 2020, 35(12): 2596–2611
XUE Hua, PAN Zhexiao, WANG Yufei, et al. MMC passivity-based and backstepping circulating current suppressing method based on port-controlled Hamiltonian with dissipation model[J]. Transactions of China Electrotechnical Society, 2020, 35(12): 2596–2611
[21] AKAGI H, KANAZAWA Y, NABAE A. Instantaneous reactive power compensators comprising switching devices without energy storage components[J]. IEEE Transactions on Industry Applications, 1984, IA-20(3): 625–630.
[22] 王久和. 无源控制理论及其应用[M]. 北京: 电子工业出版社, 2010.
[23] LEE S J, OH K K, AHN H S. Passivity-based output synchronisation of port-controlled Hamiltonian and general linear interconnected systems[J]. IET Control Theory & Applications, 2013, 7(2): 234–245.
[24] 陈宗祥, 刘晓东, 潘俊民. 基于互联与阻尼配置无源控制的并网逆变器电流控制技术[J]. 电工技术学报, 2011, 26(8): 99–105
CHEN Zongxiang, LIU Xiaodong, PAN Junmin. Current control strategy for grid-connected inverter based on IDA-PBC[J]. Transactions of China Electrotechnical Society, 2011, 26(8): 99–105
[25] 刘金琨, 孙富春. 滑模变结构控制理论及其算法研究与进展[J]. 控制理论与应用, 2007, 24(3): 407–418
LIU Jinkun, SUN Fuchun. Research and development on theory and algorithms of sliding mode control[J]. Control Theory & Applications, 2007, 24(3): 407–418