Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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MMC-HVDC在青藏直流逆变侧换相失败问题中的仿真研究

来源:电工电气发布时间:2022-03-24 15:24 浏览次数:342

MMC-HVDC在青藏直流逆变侧换相失败问题中的仿真研究

吕晓举1,李朝霞1,臧堃1,崔宁宁2,陈福伟1,耿龙海1,权学政1
(1 西藏农牧学院 水利土木工程学院,西藏 林芝 860000;
2 静宁县水务局,甘肃 静宁 743400)
 
     摘 要:针对青藏直流存在换相失败的问题,提出了柔性直流输电的技术方案。分析了电压源换流器的数学模型,介绍了 MMC 的拓扑结构,并详细计算了青藏柔性直流的系统参数。利用 ADPSS 软件搭建了 11 电平的青藏柔性直流模型,并在逆变侧分别设置了单相接地短路故障、两相接地短路故障、三相接地短路故障,分别对各种不同类型的故障进行了仿真研究。仿真结果表明,在三种严重程度不同的故障情况下,电压下降的幅度逐渐增加,直流输电传送的功率也逐渐下降,但都未发生换相失败,青藏柔性直流输电依旧完成了换相,验证了该方案的可行性,为防御青藏直流换相失败提供了思路。
    关键词:青藏直流;换相失败;MMC-HVDC ;不对称短路故障;PSASP 软件
    中图分类号:TM721.1     文献标识码:A     文章编号:1007-3175(2022)03-0019-08
 
Simulation Study of MMC-HVDC in the Problem of Commutation
Failure on the Qinghai-Tibet DC Inverter Side
 
LYU Xiao-ju1, LI Zhao-xia1, ZANG Kun1, CUI Ning-ning2, CHEN Fu-wei1, GENG Long-hai1, QUAN Xue-zheng1
(1 College of Hydraulic and Civil Engineering, Tibet Agriculture and Animal Husbandry University, Nyingchi 860000, China;
2 Jingning Water Bureau, Jingning 743400, China)
 
    Abstract: This paper proposed a technical solution for flexible HVDC transmission based on the problem of commutation failure in Qinghai-Tibet HVDC. It analyzed the mathematical model of the voltage source converter, introduced the topology of MMC, and calculated the system parameters of Qinghai-Tibet voltage direct current in detail. This research constructed an 11-level Qinghai-Tibet flexible DC model by using PSASP software. It set a single-phase grounding short circuit fault, one two-phase grounding short circuit fault, and a three-phase grounding short circuit fault on the inverting side, and did the simulation study respectively.The simulation results show that the voltage drop increases gradually, and the power transmitted by the HVDC decreases gradually under different conditions. However, the phenomenon of commutation failure does not occur, and the Qinghai-Tibet still completes the commutation. The simulation experiment verifies the feasibility of the scheme and this study provides an idea to prevent the commutation failure of Qinghai-Tibet HVDC.
    Key words: Qinghai-Tibet DC; commutation failure; MMC-HVDC; asymmetric short circuit fault; PSASP software
 
参考文献
[1] 国家电网公司. 青藏电力联网工程 专业卷 柴达木—拉萨 ±400 kV 直流输电工程调试与试运行[M].北京:中国电力出版社,2012.
[2] 贾俊川,赵兵,罗煦之,等. 青藏直流投运后藏中电网稳定特性研究[J] . 电力系统保护与控制,2014,42(6) :104-109.
[3] 张韦琦. 青藏直流对大规模新能源发电支撑技术研究[D]. 西安:西安理工大学,2019.
[4] 卢东斌,王永平,王振曦,等.分层接入方式的特高压直流输电逆变侧最大触发延迟角控制[J].中国电机工程学报,2016,36(7) : 1808-1816.
[5] 杨硕,郭春义,王庆,等.分层接入特高压直流输电系统协调控制策略研究[J].中国电机工程学报,2019,39(15) :4356-4362.
[6] XIONG Y, YAO W, WEN J.Additional reactive power control and emergency control of the ±1 100 kV UHVDC system with a hierarchical connection mode [J] .The Journal of Engineering,2019(16) :1523-1527.
[7] 辛建波,舒展,谭阳琛,等.特高压直流分层接入下换相失败预防协调控制[J].电网技术,2019,43(10) :3543-3551.
[8] 徐政. 柔性直流输电系统[M].北京:机械工业出版社,2016.
[9] 汤广福. 基于电压源换流器的高压直流输电技术[M].北京:中国电力出版社,2009.
[10] 赵成勇.柔性直流输电建模和仿真技术[M].北京:中国电力出版社,2014.
[11] MARQUARDT R.Stromrichterschaltungen mit verteilten energiespeichern :DE10103031A1[P].2001-01-24.
[12] MARQUARDT R, LESNICAR A. New concept for high voltage-modular multilevel converter[C]//Proceedings of the 34th IEEE Annual Power Electronics Specialists Conference,2003.
[13] 金恩淑,邓佛良,夏国武,等. 考虑寿命损耗的模块化多电平换流器可靠性分析[J] . 东北电力大学学报,2019,39(6) :1-7.
[14] MOKHBERDORAN Ataollah, CARVALHO Adriano,SILVA Nuno, et al.Application study of superconducting fault current limiters inmeshed HVDC grids protected by fast protection relays[J].Electric Power Systems Research,2017,143(2) :292-302.
[15] TOMASZUK A,KRUPA A. High efficiency high stepup DC/DC converters-a review[J]. Bulletin of the Polish Academy of Sciences:Technical Sciences,2011,59(4) :475-483.
[16] 卜广全,李英彪,王姍姗,等. MMC 对交流系统三相短路故障短路电流影响的机理研究[J] . 中国电机工程学报,2017,37(21) :6303-6312.
[17] 梁旭懿,王钢,李海锋,等. 交流系统故障对直流换相失败的关联性分析[C]// 中国高等学校电力系统及其自动化专业第二十四届学术年会,2008.
[18] 周前,张潮,张宁宇,等.2018 年多直流馈入江苏规划电网连锁换相失败分析[J] . 电力工程技术,2018,37(1) :51-57.