2025年4月2日 周三
首页 > 过刊浏览>2024年第39卷第4期 >42-52. DOI:10.19781/j.issn.1673-9140.2024.04.005
PDF HTML阅读 XML下载 导出引用 引用提醒
含微分平坦控制的柔直输电系统稳定性分析
CSTR:
[cstr]
作者:
作者单位:

(北京信息科技大学自动化学院，北京 100192)

通讯作者:

李 慧（1976—），女，博士，教授，主要从事柔性直流输电稳定与控制、新能源发电技术等研究；E?mail：lhbxy@bistu.edu.cn

中图分类号:

TM731

基金项目:

北京市自然科学基金（3232045)


Stability analysis of flexible direct current transmission system with differential flatness control
Author:
Affiliation:

(School of Automation, Beijing Information Science & Technology University, Beijing 100192, China)

  • 摘要
    • | |
  • 访问统计
    • |
  • 参考文献 [26]
    • |
  • 相似文献
    • |
  • 引证文献
    • | |
  • 文章评论
    摘要:

    交流系统不对称运行时换流站控制参数不合理的取值会影响柔性直流输电系统稳定运行。为此，首先提出不对称工况下含微分平坦控制的换流站小信号模型，同时结合模块化多电平换流器（modular multilevel converter, MMC）内部特性、环流抑制器以及直流线路等各子部分的动态模型，建立两端柔性直流输电系统全局小信号模型；然后在此基础上，依据微分平坦控制器内、外环控制参数根轨迹的变化情况，分析其对系统稳定性的影响，确定其合理取值范围；最后在PSCAD/EMTDC中搭建含微分平坦控制的两端柔性直流输电测试系统，验证所提小信号模型以及结论的正确性，为实际工程中控制器参数整定提供理论依据。

    Abstract:

    When an AC system operates asymmetrically, unreasonable control parameter values at the converter station can affect the stable operation of the flexible DC transmission system. Therefore, a small-signal model of the converter station with differential flatness control under asymmetric conditions is proposed. Simultaneously, combining the internal characteristics of the modular multilevel converter (MMC) with the dynamic models of various subsystems such as the circulating current suppressor and the DC line, a global small-signal model for the two-terminal flexible DC transmission system is established. Based on this, the impact of the control parameters on system stability is analyzed by the changes in the root locus of the inner and outer loops of the differential flatness controller， and determine their reasonable value ranges. Finally, a two-terminal flexible DC transmission test system with differential flatness control in the PSCAD/EMTDC is built to verify the correctness of the proposed small-signal model and conclusions, providing a theoretical basis for controller parameter tuning in practical engineering.

    参考文献
    [1] 林毅,林威,刘鑫,等.一种适用于MMC的混合步长电磁暂态仿真方法[J].电力科学与技术学报,2023,38(2):58-66. LIN Yi,LIN Wei,LIU Xin,et al.A hybrid step-size electromagnetic transient simulation method suitable for MMC[J].Journal of Electric Power Science and Technology,2023,38(2):58-66.
    [2] 方辉,周敬森,王皓正,等.基于谐波状态空间的MMC背靠背直流输电系统阻抗建模及稳定性分析[J].智慧电力,2023,51(3):87-95. FANG Hui,ZHOU Jingsen,WANG Haozheng,et al.Impedance modeling and stability analysis of MMC based back-to-back HVDC transmission system based on harmonic state space[J].Smart Power,2023,51(3):87-95.
    [3] 徐政.柔性直流输电系统[M].北京:机械工业出版社,2012:1-24. XU Zheng.Flexible DC transmission system[M].Beijing:China Machine Press,2012:1-24.
    [4] 王少林,王刚,陈琦,等.考虑线路电阻影响的MMC-MTDC自适应下垂控制[J].电力系统保护与控制,2022,50(10):40-47. WANG Shaolin,WANG Gang,CHEN Qi,et al.MMC-MTDC adaptive sagging control considering the influence of line resistance[J].Power System Protection and Control,2022,50(10):40-47.
    [5] 雷顺广,束洪春,李志民.基于桥臂功率特征的全—半混合型柔性直流输电线路保护[J].电工技术学报,2023,38 (13):3563-3575. LEI Shunguang,SHU Hongchun,LI Zhimin.Full-half bridge hybrid VSC-HVDC transmission line protection method based on power characteristics of bridge arms[J].Transactions of China Electrotechnical Society,2023,38(13):3563-3575.
    [6] 金恩淑,谭秋实,李思雨,等.交流不对称工况下MMC环流抑制与电容电压均衡协调控制策略[J].东北电力大学学报,2021,41(1):90-98. JIN Enshu,TAN Qiushi,LI Siyu,et al.Coordinated control strategy of MMC circulating current and capacitor voltage under unbalanced grid conditions[J].Journal of Northeast Electric Power University,2021,41(1):90-98.
    [7] 蒋谦,黄志豪,程启明,等.基于MMC的PET中间隔离级DC-DC变换器的新型模型预测控制策略[J].电力建设,2022,43 (4):49-57. JIANG Qian,HUANG Zhihao,CHENG Qiming，et al.Novel model predictive control strategy for MMC-based DC-DC converter in the intermediate isolation stage of PET[J].Electric Power Construction,2022,43 (4):49-57
    [8] 赵峰,甘延奇,陈小强,等.MMC变流器的无差拍电流预测控制器研究与设计[J].高压电器,2023,59 (3):123-131. ZHAO Feng,GAN Yanqi,CHEN Xiaoqiang,et al.Research and design of deadbeat current predictive controller for MMC converters[J].High Voltage Apparatus,2023,59(3):123-131.
    [9] 李慧,罗奇,张柏林,等.直流电抗器对VSC-MTDC输电系统稳定性的影响分析[J].电网技术,2019,43(7):2641-2650. LI Hui,LUO Qi,ZHANG Bolin,et al.Influence analysis of DC reactor on the stability of VSC-MTDC transmission system[J].Power System Protection and Control,2019,43(7):2641-2650.
    [10] 张思彤,梁纪峰,马燕峰,等.直驱风电场经柔性直流输电并网的宽频振荡特性分析[J].电力系统保护与控制,2022,50(14):33-42. ZHANG Sitong,LIANG Jifeng,MA Yanfeng,et al.Broadband oscillation characteristics analysis of a VSC-HVDC connected direct drive wind farm[J].Power System Protection and Control,2022,50(14):33-42.
    [11] 晁武杰,唐志军,林国栋,等.基于桥臂电抗器耦合的MMC-HVDC系统故障过流抑制方法[J].电测与仪表,2023,60 (12):111-116. CHAO Wujie,TANG Zhijun,LIN Guodong,et al.Fault over-current suppression method for MMC-HVDC system based on bridge arm reactor coupling[J].Electrical Measurement & Instrumentation,2023,60 (12):111-116.
    [12] 李探,Aniruddha M.Gole,赵成勇.考虑内部动态特性的模块化多电平换流器小信号模型[J].中国电机工程学报,2016,36(11):2890-2899. LI Tan,Aniruddha M.Gole,ZHAO Chengyong.Small signal model of modular multilevel converter considering internal dynamic characteristics[J].Proceedings of the CSEE,2016,36(11):2890-2899.
    [13] 鲁晓军,林卫星,向往,等.基于模块化多电平换流器的直流电网小信号建模[J].中国电机工程学报,2018,38(4):1143-1156. LU Xiaojun,LIN Weixing,XIANG Wang,et al.Small signal modeling of DC network based on modular multilevel converter[J].Proceedings of the CSEE,2018,38(4):1143-1156.
    [14] 范明烨,李慧,刘思嘉,等.控制参数对柔性直流电网稳定性的影响分析[J].电力系统保护与控制,2021,49(21):43-52. FAN Mingye,LI Hui,LIU Sijia,et al.Influence analysis of control parameters on stability of flexible DC power grid[J].Power System Protection and Control,2021,49(21):43-52.
    [15] 张烜一,江修波,郑文迪,等.基于电阻耗能支路的MMC-HVDC线路故障清除与重启恢复策略[J].电力科学与技术学报,2021,36(6):67-76. ZHANG Weiyi,JIANG Xiubo,ZHENG Wendi et al.Fault removal and restart recovery strategy of MMC-HVDC line based on resistance energy dissipation branch[J].Journal of Electric Power Science and Technology,2021,36(6):67-76.
    [16] 朱明琳,杭丽君,李国杰,等.三相电网不平衡下 MMC 多变量保护控制策略及系统运行性能研究[J].中国电机工程学报,2016,36(9):2408-2418. ZHU Minglin,HANG Lijun,LI Guojie,et al.Research on multi-variable protection control strategy and system operation performance of MMC under unbalance of three-phase power system[J].Proceedings of the CSEE,2016,36(9):2408-2418.
    [17] 杨佳艺,赵成勇,郭春义.交流系统不对称时MMC系统小信号稳定性研究[J].中国电机工程学报,2018,38(12):3651-3661. YANG Jiayi,ZHAO Chengyong,GUO Chunyi.Small signal stability of MMC system when AC system is asymmetric[J].Proceedings of the CSEE,2018,38(12):3651-3661.
    [18] SHI X,WANG Z,LIU B,et al.Steady-state modeling of modular multilevel converter under unbalanced grid conditions[J].IEEE Transactions on Power Electronics,2017,32(9):7306-7324.
    [19] 宗皓翔,张琛,吕敬,等.MMC多入多出阻抗及其在不对称小扰动稳定分析中的应用[J].中国电机工程学报,2022,42(15):5649-5664. ZONG Haoxiang,ZHANG Chen,Lü Jing,et al.MMC multiinput multioutput impedance and its application in unsymmetrical small disturbance stability analysis[J].Proceedings of the CSEE,2022,42(15):5649-5664.
    [20] 林波,王斌,程启明,等.不对称故障下向无源网络供电的MMC-HVDC微分平坦控制策略[J].高电压技术,2021,47(11):4023-4032. LIN Bo,WANG Bin,CHENG Qiming,et al.Differential flat control strategy for MMC-HVDC power supply to passive networks under asymmetric faults[J].High Voltage Technology,2021,47(11):4023-4032.
    [21] 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 of unified power quality regulator based on modular multilevel converters under unbalanced grid voltage[J].Transactions of China Electrotechnical Society,2021,36(16):3410-3421.
    [22] 皇金锋,李慧慧,谢锋.基于状态反馈精确线性化Buck变换器的微分平坦控制[J].工程科学与技术,2022,54(6):248-257. HUANG Jinfeng,LI Huihui,XIE Feng.Differential flat control based on state feedback precisely linearized buck converter[J].Engineering Science and Technology,2022,54(6):248-257.
    [23] GUO C,YANG J,ZHAO C.Investigation of small-signal dynamics of modular multilevel converter under unbalanced grid conditions[J].IEEE Transations Industrial Electronics,2019,66(3):2269-2279 .
    [24] LI T,GOLE A M,ZHAO C.Harmonic instability in MMC-HVDC converters resulting from internal dynamics[J].IEEE Transactions on Power Delivery,2016,31(4):1738-1747.
    [25] 王璞,王洪希,张宇,等.不平衡电网下统一电能质量调节器微分平坦控制策略[J].电力系统及其自动化学报,2022,34(11):142-149. WANG Pu,WANG Hongxi,ZHANG Yu,et al.Differential flatness control strategy for unified power quality conditioner in unbalanced gird system[J].Proceedings of the CSU-EPSA,2022,34(11):142-149.
    [26] GBT 15543—2008.电能质量 三相电压不平衡[S]. GBT 15543—2008.Power quality three-phase voltage unbalance[S].
    相似文献
    引证文献
引用本文

冯 铮,李 慧,范新桥,等.含微分平坦控制的柔直输电系统稳定性分析[J].电力科学与技术学报,2024,39(4):42-52.
FENG Zheng, LI Hui, FAN Xinqiao, et al. Stability analysis of flexible direct current transmission system with differential flatness control[J]. Journal of Electric Power Science and Technology,2024,39(4):42-52.

复制
分享
文章指标
  • 点击次数:111
  • 下载次数: 679
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 在线发布日期: 2024-09-10
文章二维码

微信公众号二维码

您是本站第 4754718 访问者

通信地址：长沙市（天心区）万家丽南路960号长沙理工大学

电话/传真：0731-85258195 E-mail：dlxb04@163.com

版权所有：电力科学与技术学报 ® 2025 版权所有

京公网安备 11010802026262号