逆变侧控制策略对换相失败的影响及恢复特性优化研究

doi:10.3969/j.issn.1000-7229.2015.09.018

摘要/Abstract

摘要：

针对直流系统逆变侧不同控制策略下的换相失败恢复特性开展研究，首先从原理上分析了定关断角控制与定电压控制方式下换相失败控制器的工作原理；然后基于实时数字仿真平台以及实际工程的录波数据，全面研究比较了这2种控制策略对换相失败恢复特性的影响，结果表明换相失败与直流运行功率、稳态运行时的关断角以及故障发生时刻均有关系，而与采用何种控制方式相关性不强；最后提出对低压限流功能模块 (voltage dependent current order limiter, VDCOL)电流指令参数进行优化的措施，以改善换相失败恢复特性并对其效果进行了仿真验证。

关键词: 直流系统, 换相失败, 恢复特性, 实时数字仿真, 定关断角控制, 定电压控制

Abstract:

The recovery characteristics of DC system after commutation failure with different inverter control strategies were studied. Firstly, the operation principle of controller with commutation failure under constant extinguish angle and constant voltage control mode was analyzed. Then based on real-time digital simulation (RTDS) and the record data of actual project, the influences of these two control modes on the recovery characteristics of commutation failure were comprehensively compared. The results indicate that commutation failure is bound up with DC operation power, extinguish angle in steady state and failure moment, but has no relationship with inverter control mode. Finally, a novel optimization method of recovery characteristic was proposed, based on modifying current instruction parameter in VDCOL (voltage dependent current order limiter) module, and the simulation was carried out to verify its effect.

Key words: DC system, commutation failure, recovery characteristic, real-time digital simulation, constant extinguish angle control, constant voltage control

中图分类号:

TM 721

李亚男，卢亚军，刘心旸，邹欣. 逆变侧控制策略对换相失败的影响及恢复特性优化研究[J]. 电力建设, 2015, 36(9): 112-116.

LI Yanan, LU Yajun, LIU Xinyang, ZOU Xin. Influence of Inverter Control Strategy on Commutation Failure and Recovery Characteristic Optimization[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(9): 112-116.

参考文献

［1］戴熙杰. 直流输电基础［M］.北京：水利电力出版社，1990：56-80.
［2］郑传材，黄立滨，管霖，等.±800 kV 特高压直流换相失败的RTDS 仿真及后续控制保护特性研究［J］.电网技术，2011，35(4)：14-20.
Zheng Chuancai, Huang Libin, Guan Lin, et al. RTDS-based simulation of commutation failure in ±800 kV DC power transmission and research on characteristics of subsequent control and protection［J］. Power System Technology, 2011, 35(4): 14-20.
［3］Kristmundsson G M, Carroll D P. The effect of system frequency spectrum on commutation failure in HVDC inverter［J］. IEEE Transaction on Power Delivery, 1990, 5(2): 1121-1128.
［4］邵瑶，汤涌，郭小江，等.2015 年特高压规划电网华北和华东地区多馈入直流输电系统的换相失败分析［J］.电网技术，2011，35(10)：9-15.
Shao Yao, Tang Yong, Guo Xiaojiang, et al. Analysis on commutation failures in multi-infeed HVDC transmission systems in North China and East China power grids planned for UHV power grids in 2015［J］. Power System Technology, 2011, 35(10): 9-15.
［5］邵瑶，汤涌.采用多馈入交互作用因子判断高压直流系统换相失败的方法［J］.中国电机工程学报，2012，32(4)：108-114.
Shao Yao, Tang Yong. A commutation failure detection method for HVDC systems based on multi-infeed interaction factors［J］. Proceeding of the CSEE, 2012, 32(4): 108-114.
［6］何朝荣，李兴源.影响多馈入高压直流换相失败的耦合导纳研究［J］.中国电机工程学报，2008，28(7)：51-57.
He Chaorong, Li Xingyuan. Study on mutual admittance and commutation failure for mulit-infeed HVDC transmission systems［J］. Proceedings of the CSEE, 2008, 28(7): 51-57.
［7］项玲，郑建勇，胡敏强.多端和多馈入直流输电系统中换相失败的研究［J］.电力系统自动化，2005，29(11)：29-33.
Xiang Ling, Zheng Jianyong, Hu Minqiang. Study on commutation failure in MTDC and MIDC systems［J］. Automation of Electric Power Systems, 2005, 29(11): 29-33.
［8］刘建，李兴源，傅孝韬，等.多馈入短路比及多馈入交互作用因子与换相失败的关系［J］.电网技术，2009，33(12)：20-25.
Liu Jian, Li Xingyuan, Fu Xiaotao, et al. Relationship of multi-infeed short circuit ratio and multi-infeed interaction factor with commutation failure［J］. Power System Technology, 2009, 33(12): 20-25.
［9］Thio C V, Davies J B, Kent K L. Commutation failures in HVDC transmission systems［J］. IEEE Transactions on Power Delivery, 1996, 11(2): 946-957.
［10］陈仕龙，束洪春，甄颖.云广特高压直流输电负极运行换相失败及控制研究［J］.电力自动化设备，2013，33(6)：128-133.
Chen Shilong, Shu Hongchun, Zhen Ying. Commutation failure of Yun-Guang UHVDC transmission system running in negative pole state and its control measures［J］. Electric Power Automation Equipment, 2013, 33(6): 128-133.
［11］李新年，李涛，刘耀.华东多直流馈入系统换相失败仿真研究［J］.电力建设，2014，35(12)：77-83.
Li Xinnian, Li Tao, Liu Yao. Simulation research on multi-infeed HVDC commutation failure in East China power grid［J］. Electric Power Construction, 2014, 35(12): 77-83.

[1]	汤吉鸿, 章德, 丛凡超, 田国梁, 吴贵烘, 李宇骏, 禹海峰. 基于线性二次型最优控制的多端直流最优功率调制方案[J]. 电力建设, 2020, 41(8): 32-39.
[2]	杨林超，楼伯良，徐政，周华，华文. 适用于交直流系统电磁暂态仿真的三序网络动态等值方法及其在华东电网的应用[J]. 电力建设, 2019, 40(7): 57-64.
[3]	崔康生，文俊，赵晓斌，李蓉，闫涵，段锐敏. 一种适用于MTDC输电的直流系统阻抗扫描方法[J]. 电力建设, 2017, 38(8): 17-.
[4]	付俊波，凌卫家，邓晖，王新宝，华文，俞秋阳. 抵御浙江电网多馈入直流系统持续换相失败措施 [J]. 电力建设, 2017, 38(8): 102-.
[5]	张利东，曹昕，韩民晓. 一种基于转移矩阵的交直流系统小信号建模方法[J]. 电力建设, 2017, 38(8): 123-.
[6]	陆韶琦，王世佳，侯玉强，刘福锁, 徐政. 基于复合移相控制的直流输电系统换相失败响应优化研究 [J]. 电力建设, 2017, 38(7): 123-.
[7]	程林，汪莹，宋福龙，罗金山，刘满君. 柔性交直流混联电网系统级可靠性评估[J]. 电力建设, 2017, 38(3): 55-.
[8]	康义，陆韶琦，陈凌云，程改红，徐政. 适用于电磁暂态仿真的大电网简化方法及在南方电网的应用[J]. 电力建设, 2017, 38(1): 31-.
[9]	金祖洋，杨洪耕，赵海杉. 特高压直流输电系统异常换相失败的机理研究[J]. 电力建设, 2016, 37(7): 126-132.
[10]	李子寿，周密，徐箭，兰天楷. 考虑交流电网调节能力的VSC-MTDC改进下垂控制方法[J]. 电力建设, 2016, 37(6): 79-85.
[11]	郑超，杨金刚，滕予非，李惠玲，吕思卓. LCC与VSC型直流馈入对弱受端电网特性的影响[J]. 电力建设, 2016, 37(4): 84-90.
[12]	朱林，陈宇川，蔡泽祥，苏海林，杨欢欢，金小明，周保荣，张东辉. 基于直流系统故障响应特征的机电暂态建模方法[J]. 电力建设, 2016, 37(2): 18-24.
[13]	吕思卓，郑超，杨金刚，刘洪涛. 送端直流孤岛系统频率限制器优化控制策略[J]. 电力建设, 2016, 37(2): 107-111.
[14]	李鹏，温渤婴. 背靠背高压直流系统稳态运行参数计算[J]. 电力建设, 2015, 36(9): 30-34.
[15]	刘心旸,金茜，李亚男，蒋维勇，蒲莹. 并联换流器高压直流输电主回路与主接线研究[J]. 电力建设, 2015, 36(9): 50-56.