张福轩;邹强;赵森林;阮思烨;王亮;

• 1:国家电网公司
• 2:南京南瑞继保电气有限公司
• 3:中国电力科学研究院

摘要(Abstract)：

针对特高压直流(ultra-high voltage direct current,UHVDC)运行过程中一极直流线路故障重启时对另一健全极运行产生影响的问题,考虑双极直流线路间的互感,对暂态过程中双极电气量特征进行深入研究。根据暂态过程中的电压计算公式,对双极之间的影响进行了数值计算和物理解释并对影响功率跌落的因素进行分析,在已有健全极短时闭锁低压限流功能(voltage dependent current limit,VDCL)的控制措施基础上提出了多项控制策略。以天中直流为研究对象,通过实时数字仿真(real-time digital simulator,RTDS)系统建立与实际一次系统和实际控制保护程序完全一致的仿真模型,对改进策略进行优化比较研究,验证了在故障极重启期间健全极整流侧采用定电压控制以及改变健全极的电流控制器参数两项控制措施的有效性,最后提出了工程应用建议。

关键词(KeyWords)： 特高压直流输电;互感;控制措施;电流控制器;直流线路重启

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(XT71-15-049)~~

作者(Author): 张福轩;邹强;赵森林;阮思烨;王亮;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.0781

参考文献(References)：

• [1]李明节.大规模特高压交直流混联电网特性分析与运行控制[J].电网技术,2016,40(4):985-991.Li Mingjie.Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids[J].Power System Technology,2016,40(4):985-991(in Chinese).
• [2]张健,屠竞哲,印永华,等.直流送受端故障对送端系统稳定性的影响的对比分析及控制措施[J].电网技术,2016,40(4):999-1004.Zhang Jian,Tu Jingzhe,Yin Yonghua,et al.Comparison analysis and countermeasures on impact of HVDC sending-and receiving-Side contingencies on sending-side system stability[J].Power System Technology,2016,40(4):999-1004(in Chinese).
• [3]吴萍,徐式蕴,赵兵,等.面向风火打捆的特高压直流输电工程弱送端强直弱交耦合特性研究[J].电力自动化设备,2016,36(1):60-66.Wu Ping,Xu Shiyun,Zhao Bing,et al.Research of weak sending-end coupling characteristics for bundled wind-thermal power transmission of UHVDC project[J].Electric Power Automation Equipment,2016,36(1):60-66(in Chinese).
• [4]李朝顺,张正茂,康激扬.大直流弱送端系统安全稳定控制策略[J].电网技术,2014,38(1):28-32.Li Chaoshun,Zhang Zhengmao,Kang Jiyang.Research on security and stability control strategy for weak sending-end system of large capacity HVDC power transmission system[J].Power System Technology,2014,38(1):28-32(in Chinese).
• [5]张建设,张尧,张志朝,等.直流系统控制方式对大扰动后交直流混合系统电压和功率恢复的影响[J].电网技术,2005,29(5):20-24.Zhang Jianshe,Zhang Yao,Zhang Zhichao,et al.Influence of DC system control modes on voltage and power recovery after large disturbance in hybrid AC/DC systems[J].Power System Technology,2005,29(5):20-24(in Chinese).
• [6]周全,别睿,涂莉,等.±800 kV直流线路故障过程中电磁耦合特性与保护研究[J].电网技术,2014,38(8):2133-2140.Zhou Quan,Bie Rui,Tu Li,et al.Research on electromagnetic coupling characteristics during fault process in±800 kV UHVDC transmission line and its protection strategy[J].Power System Technology,2014,38(8):2133-2140(in Chinese).
• [7]浙江大学直流输电科研组.直流输电[M].北京:水利水电出版社,1985:240-260.
• [8]赵畹君.高压直流输电工程技术[M].北京:中国电力出版社,2004:2-30.
• [9]李新年,吕鹏飞,杨鹏,等.同塔架设直流线路的相互影响研究[J].电网技术,2012,36(11):222-228.Li Xinnian,LüPengfei,Yang Peng,et al.Inter-influences between HVDC transmission lines erected on same tower[J].Power System Technology,2012,36(11):222-228(in Chinese).
• [10]卢东斌,王永平,王振曦,等.分层接入方式下的特高压直流输电逆变侧最大触发角延迟角控制[J].中国电机工程学报,2016,36(7):1808-1816.Lu Dongbin,Wang Yongping,Wang Zhenxi,et al.Inverter maximum alpha control in UHVDC transmission with hierarchical connection mode[J].Proceedings of the CSEE,2016,36(7):1808-1816(in Chinese).
• [11]李佳曼,蔡泽祥,李晓华,等.直流系统保护对交流故障的响应机理与交流故障引发的直流系统保护误动分析[J].电网技术,2015,39(4):953-960.Li Jiaman,Cai Zexiang,Li Xiaohua,et al.Response mechanism of UHVDC system protection to faults in UHVAC system and analysis on malfunction of UHVDC protection caused by faults in UHVAC system[J].Power System Technology,2015,39(4):953-960(in Chinese).
• [12]高媛,韩民晓.特高压直流输电多馈入方式稳态特性研究[J].电网技术,2014,38(12):3447-3452.Gao Yuan,Han Minxiao.Steady state characteristic of multi-infeed UHVDC power transmission[J].Power System Technology,2014,38(12):3447-3452(in Chinese).
• [13]林凌雪,张尧,钟庆,等.多馈入直流输电系统中换相失败研究综述[J].电网技术,2006,30(17):40-46.Lin Lingxue,Zhang Yao,Zhong Qing,et al.A survey on commutation failures in multi-infeed HVDC transmission system[J].Power System Technology,2006,30(17):40-46(in Chinese).
• [14]蒲莹,厉璇,马玉龙,等.网侧分层接入500 KV/1000 KV交流电网的特高压直流系统控制保护方案[J].电网技术,2016,40(10):3081-3087.Pu Ying,Li Xuan,Ma Yulong,et al.Control and protection system scheme on UHVDC with hierarchical connection to 500 KV/1000 KV AC system[J].Power System Technology,2016,40(10):3081-3087(in Chinese).
• [15]束洪春,刘可真,朱盛强,等.±800 kV特高压直流输电线路单端电气量暂态保护[J].中国电机工程学报,2010,30(31):108-117.Shu Hongchun,Liu Kezhen,Zhu Shengqiang,et al.±800 kV UHVDC transmission line protection based on single end electrical transient signal[J].Proceedings of the CSEE,2010,30(31):108-117(in Chinese).
• [16]王德林,吕鹏飞,阮思烨,等.特高压直流双极输电线路互感影响扩对策研究[J].中国电机工程学报,2015,35(17):4353-4360.Wang Delin,LüPengfei,Ruan Siye,et al.Effect of mutual inductance between bipolar transmission lines of UHVDC and proposal of countermeasure[J].Proceedings of the CSEE,2015,35(17):4353-4360(in Chinese).
• [17]王亚涛,吴彥维,李俊霞,等.HVDC中直流线路的互感机理及其对控制系统影响的研究[J].电力系统保护与控制,2015,43(12):28-33.Wang Yaotao,Wu Yanwei,Li Junxia,et al.Mechanism of DC transmission line’s mutual inductance in HVDC and its effect on the control system[J].Power System Protection and Control,2015,43(12):28-33(in Chinese).
• [18]朱军,熊万亮,曹晓斌,等.共用走廊高压输电线路间耦合影响分析[J].华东电力,2011,39(12):2021-2025.Zhu Jun,Xiong Wanliang,Chao Xiaobin,et al.Coupling effects among high voltage transmission lines in joint-use corridor[J].East China Electric Power,2011,39(12):2021-2025(in Chinese).
• [19]邓军,肖遥,郝艳捧.新型同塔双回高压直流输电线路分布参数测量方法及工程应用[J].电力自动化设备,2016,36(3):154-158.Deng Jun,Xiao Yao,Hao Yanpeng.Measuring of distributed parameter and its application for dual-loop HVDC transmission lines on same tower[J].Electric Power Automation Equipment,2016,36(3):154-158(in Chinese).
• [20]杨勇,陆家榆,鞠勇.交流线路与±800 kV直流线路同走廊时的地面混合电场研究[J].电网技术,2009,33(15):54-59.Yang Yong,Lu Jiayu,Ju Yong.Study on the hybrid electric field over the ground surface under AC lines and±800 kV DC lines in the same corridor[J].Power System Technology,2009,33(15):54-59(in Chinese).