基于定关断面积的分层接入UHVDC系统换流器协调控制策略

韩平平; 孙浩然; 童青洋; 张炎; 陈忠; 杨为

doi:10.19912/j.0254-0096.tynxb.2020-1228

PDF(2398 KB)

太阳能学报 ›› 2022, Vol. 43 ›› Issue (7) : 316-325. DOI: 10.19912/j.0254-0096.tynxb.2020-1228

基于定关断面积的分层接入UHVDC系统换流器协调控制策略

韩平平¹, 孙浩然¹, 童青洋¹, 张炎², 陈忠³, 杨为³

作者信息 +

COORDINATED CONTROL STRATEGY OF CONVERTER FOR UHVDC SYSTEM UNDER HIERARCHICAL CONNECTION BASED ON CONSTANT EXTINCTION AREA

Han Pingping¹, Sun Haoran¹, Tong Qingyang¹, Zhang Yan², Chen Zhong³, Yang Wei³

Author information +

文章历史 +

摘要

基于分层接入特高压直流输电（UHVDC）系统逆变侧高低端的耦合特性,分析叠弧面积增加引发换流器换相失败的机理,提出一种抑制分层接入UHVDC系统非故障层换流器换相失败的协调控制策略。该策略通过补偿交流故障后非故障层换流器所需的叠弧面积,使晶闸管具有足够的关断面积完成去游离过程,从而防止换相失败的发生。最后基于PSCAD/EMTDC搭建实际系统模型并进行了仿真验证,结果表明所提协调控制策略能有效抑制不同故障程度下受端电网对称和不对称故障下非故障层换流器的换相失败,可提升系统的稳定性。

Abstract

The research on commutation failure suppression strategy of UHVDC system converter has important engineering significance. Based on the coupling characteristics of the high and low side of the inverter side in the UHVDC system under hierarchical connection, this paper analyzes the mechanism of commutation failure caused by the increase of the overlap area, and proposes a coordinated control strategy to suppress the commutation failure of the non-fault layer converter in the UHVDC system under hierarchical connection. The strategy compensates the overlap area required by the non-fault layer converter after AC fault, so that the thyristor has enough extinction area to complete the de dissociation process, so as to prevent commutation failure. Finally, an actual system model is built based on PSCAD/EMTDC, and the simulation results show that the proposed coordinated control strategy can effectively suppress the commutation failure of the non-fault layer converter under symmetrical and asymmetric faults of the receiving end grid under different fault degrees, and improve the stability of the system.

导出引用

韩平平, 孙浩然, 童青洋, 张炎, 陈忠, 杨为. 基于定关断面积的分层接入UHVDC系统换流器协调控制策略[J]. 太阳能学报. 2022, 43(7): 316-325 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1228

Han Pingping, Sun Haoran, Tong Qingyang, Zhang Yan, Chen Zhong, Yang Wei. COORDINATED CONTROL STRATEGY OF CONVERTER FOR UHVDC SYSTEM UNDER HIERARCHICAL CONNECTION BASED ON CONSTANT EXTINCTION AREA[J]. Acta Energiae Solaris Sinica. 2022, 43(7): 316-325 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1228

中图分类号： TM721

参考文献

[1] 刘振亚. 中国特高压交流输电技术创新[J]. 电网技术, 2013, 37(3): T1-T8.
LIU Z Y.Commutation failure judgment method for multi-infeed HVDC systems considering the interaction of commutation failures[J]. Power system technology, 2013, 37(3): T1-T8.
[2] 贺杨烊, 郑晓冬, 邰能灵, 等. 交直流混联电网LCC-HVDC换流器建模方法综述[J]. 中国电机工程学报, 2019, 39(11): 3119-3130.
HE Y Y, ZHENG X D, TAI N L, et al.A review of modeling methods for LCC-HVDC converter in AC/DC hybrid power grid[J]. Proceedings of the CSEE, 2019, 37(11): 3119-3130.
[3] 丁明, 张炎, 韩平平, 等. 大规模风火电送端系统直流闭锁紧急控制策略研究[J]. 太阳能学报, 2020, 35(8): 1776-1786.
DING M, ZHANG Y, HAN P P, et al.Research of urgent control strategy under HVDC block for wind-thermal-bundled sending end system[J]. Acta energiae solaris sinica, 2020, 35(8): 1776-1786.
[4] 郭春义, 赵剑, 刘炜, 等. 抑制高压直流输电系统换相失败方法综述[J]. 中国电机工程学报, 2018, 38(S1): 1-10.
GUO C Y, ZHAO J, LIU W, et al.A review of methods to mitigate the commutation failure for LCC-HVDC[J]. Proceedings of the CSEE, 2018, 38(S1): 1-10.
[5] 景柳铭, 王宾, 董新洲, 等. 高压直流输电系统连续换相失败研究综述[J]. 电力自动化设备, 2019, 39(9): 116-123.
JING L M, WANG B, DONG X Z, et al.Review of consecutive commutation failure research for HVDC transmission system[J]. Electric power automation equipment, 2019, 39(9): 116-123.
[6] LIU L, LIN S, SUN P Y, et al.A calculation method of pseudo extinction angle for commutation failure mitigation in HVDC[J]. IEEE transactions on power delivery, 2019, 34(2): 777-779.
[7] MIRSAEIDI S, DONG X Z, TZELEPIS D, et al.A predictive control strategy for mitigation of commutation failure in LCC-based HVDC systems[J]. IEEE transactions on power electronics, 2019, 34(1): 160-172.
[8] 彭忠, 李少华, 李泰, 等. 高压直流输电系统抑制换相失败的最小关断面积控制策略[J]. 电力系统保护与控制, 2015, 43(17): 75-80.
PENG Z, LI S H, LI T, et al.A minimum extinction area control strategy to suppress commutation failure in HVDC transmission system[J]. Power system protection and control, 2015, 43(17): 75-80.
[9] LIU L, LIN S, LIAO K, et al.Extinction angle predictive control strategy for commutation failure mitigation in HVDC systems considering voltage distortion[J]. IET generation, transmission & distribution, 2019, 13(22): 5171-5179.
[10] 刘振亚, 秦晓辉, 赵良, 等. 特高压直流分层接入方式在多馈入直流电网的应用研究[J]. 中国电机工程学报, 2013, 33(10): 1-7, 25.
LIU Z Y, QIN X H, ZHAO L, et al.Study on the application of UHVDC hierarchical connection mode to multi-infeed HVDC system[J]. Proceedings of the CSEE, 2013, 33(10): 1-7, 25.
[11] 郑超, 李惠玲, 张鑫, 等. 特高压直流分层馈入系统大扰动层间耦合特性及稳定控制[J]. 中国电机工程学报, 2019, 39(9): 2670-2681.
ZHENG C, LI H L, ZHANG X, et al.Study on the dynamic coupling characteristics and stability control strategies for the hierarchical UHVDC and AC hybrid system[J]. Proceedings of the CSEE, 2019, 39(9): 2670-2681.
[12] 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): 4356-4363.
YANG S, GUO C Y, WANG Q, et al.Coordinated control approach for UHVDC system under hierarchical connection mode[J]. Proceedings of the CSEE, 2019, 39(15): 4356-4363.
[13] 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.
XIN J B, SHU Z, TAN Y C, et al.Coordinated control of commutation failure prevention for UHVDC hierarchical connection to AC grid[J]. Power system technology, 2019, 43(10): 3543-3551.
[14] 李新年, 陈树勇, 李凤祁, 等. 特高压直流分层接入方式下预防换相失败的优化措施[J]. 中国电机工程学报, 2018, 38(22): 6563-6573.
LI X N, CHEN S Y, LI F Q, et al.Optimization measures for preventing commutation failure in UHVDC transmission with hierarchical connection mode[J]. Proceedings of the CSEE, 2018, 38(22): 6563-6573.
[15] 李兴源. 高压直流输电系统[M]. 北京: 科学出版社, 2010.
LI X Y.HVDC transmission system[J]. Beijing: Science Press, 2010.
[16] WEI Z N, YUAN Y, LEI X, et al.Direct-current predictive control strategy for inhibiting commutation failure in HVDC converter[J]. IEEE transactions on power systems, 2014, 29(5): 2409-2417.
[17] 赵彤, 吕明超, 娄杰, 等. 多馈入高压直流输电系统的异常换相失败研究[J]. 电网技术, 2015, 39(3); 705-711.
ZHAO T, LYU M C, LOU J, et al.Analysis on potential anomalous commutation failure in multi-infeed HVDC transmission systems[J]. Power system technology, 2015, 39(3); 705-711.
[18] 李瑞鹏, 李永丽, 陈晓龙. 一种抑制直流输电连续换相失败的控制方法[J]. 中国电机工程学报, 2018, 38(17): 5029-5042, 5300.
LI R P, LI Y L, CHEN X L.A control method for suppressing the continuous commutation failure of HVDC transmission[J]. Proceedings of the CSEE, 2018, 38(17): 5029-5042, 5300.