混压部分同塔双回线跨电压故障短路计算

doi:10.19595/j.cnki.1000-6753.tces.170443

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摘要混压同塔输电线路可分为完全同塔和部分同塔两大类。由于其特殊的架设方式,跨电压故障时有发生。该文基于复故障分析法,针对部分同塔情况（完全同塔可视为其中一个特例）,提出了一种新的跨电压故障短路电流计算方法。首先,将跨电压故障等效为系统发生复故障,通过网络等效化简,可得各序等效二端口网络;其次,选定故障基准相,针对不同的跨电压故障情况,分析其边界条件,并分解为基准相的对称序分量;进一步,根据复故障中两特殊相与基准相的差异,利用两组移相变压器连接各序二端口网络,得到跨电压故障下的系统复合序网,并据此求解短路电流。最后,在PSCAD中搭建500 kV/220 kV混压部分同塔双回线模型,仿真验证该方法的准确性。

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	郑涛
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	王小立

关键词 ：混压部分同塔双回线, 跨电压故障, 双端口网络, 故障电流

Abstract：Mixed-voltage multi-circuit transmission lines can be classified into two types：totally on the same tower and partly on the same tower. Due to its special construction form, cross-voltage fault occurs from time to time. In terms of the latter, an improved method of short circuit calculation of cross-voltage faults on mixed-voltage double-circuit transmission lines is proposed in this paper based on the theory of multiple fault analysis, and the first type can be regarded as a special case. First, consider the cross-voltage fault as the multiple faults of the system. The equivalent two ports network of each sequence can be obtained through the simplification. Second, the fault reference phase is selected and the boundary conditions which are decomposed into symmetrical sequence components of fault reference phase are analyzed for different cross-voltage faults. Furthermore, according to the difference between fault phase and reference phase, the composite sequence network is drawn by using ideal transformer to connect the two ports network of each sequence. And, the fault current can be obtained based on the composite sequence network. Finally, fault model of 500 kV/220 kV mixed-voltage double-circuit lines is constructed in PSCAD. Simulation results verifies the accuracy of this method.

Key words： Mixed-voltage double-circuit lines partly on the same tower cross-voltage fault two ports network fault current

收稿日期: 2017-04-14 出版日期: 2018-06-13

PACS:

TM773

基金资助:国家重点研发计划智能电网技术与装备重点专项资助项目（2016YFB0900604）

通讯作者: 郑涛男,1975年生,博士,副教授,研究方向为电力系统保护与控制。E-mail：zhengtao_sf@126.com

作者简介: 张嘉琴女,1994年生,硕士研究生,研究方向为电力系统保护与控制。E-mail：zhanghdsf@126.com

引用本文:

郑涛, 张嘉琴, 吴丹, 黄少锋, 王小立. 混压部分同塔双回线跨电压故障短路计算[J]. 电工技术学报, 2018, 33(11): 2496-2507. Zheng Tao, Zhang Jiaqin, Wu Dan, Huang Shaofeng, Wang Xiaoli. Cross-Voltage Short-Circuit Calculation of Mixed-Voltage Double-Circuit Lines Partly on the Same Tower. Transactions of China Electrotechnical Society, 2018, 33(11): 2496-2507.

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[1] 魏东, 龚庆武, 来文青, 等. 基于卷积神经网络的输电线路区内外故障判断及故障选相方法研究[J]. 中国电机工程学报, 2016, 36(增刊1): 21-28.
Wei Dong, Gong Qingwu, Lai Wenqing, et al.Research on internal and external fault diagnosis and fault-selection of transmission line based on convolutional neural network[J]. Proceedings of the CSEE, 2016, 36(S1): 21-28.
[2] 肖冬萍, 刘淮通, 姜克儒, 等. 多回交叉跨越架空输电线下工频磁场计算方法[J]. 中国电机工程学报, 2016, 36(15): 4127-4134.
Xiao Dongping, Liu Huaitong, Jiang Keru, et al.Calculation of the power-frequency magnetic field under multiple-circuit cross-over overhead transmission lines[J]. Proceedings of the CSEE, 2016, 36(15): 4127-4134.
[3] 肖遥, 邓军, 夏谷林, 等. 高压直流输电线路分布参数测量新方法[J]. 中国电机工程学报, 2015, 35(20): 5375-5383.
Xiao Yao, Deng Jun, Xia Gulin, et al.A novel distributed parameters measurement method of HVDC transmission line[J]. Proceedings of the CSEE, 2015, 35(20): 5375-5383.
[4] 马晓倩, 陆家榆, 鞠勇. 同塔双回交流线路改直流线路合成电场分析[J]. 电网技术, 2015, 39(6): 1538-1545.
Ma Xiaoqian, Lu Jiayu, Ju Yong.Study of total electric field of DC lines converted from double-circuit AC lines[J]. Power System Technology, 2015, 39(6): 1538-1545.
[5] 张奋强, 卢继平, 梁沛. 基于疏松耦合变压器零序解耦模型的同杆双回线路故障计算[J]. 电力系统自动化, 2016, 40(4): 98-104.
Zhang Fenqiang, Lu Jiping, Liang Pei.Fault calculation based on the zero sequence decoupling method of loose coupling transformer for double-circuit lines[J]. Automation of Electric Power Systems, 2016, 40(4): 98-104.
[6] 李海锋, 丘映丹, 郭履星, 等. 基于单回电气量的同塔双回直流线路故障测距算法[J]. 电力系统自动化, 2016, 40(12): 172-178.
Li Haifeng, Qiu Yingdan, Guo Lüxing, et al.Fault location method for double-circuit HVDC transmission lines on same tower based on single-circuit electric quantities[J]. Automation of Electric Power Systems, 2016, 40(12): 172-178.
[7] Song S, Shi J, Huang C, et al.Method for estimating unbalanced currents in untransposed double-circuit lines on the same tower[C]//International Conference on Renewable Power Generation (RPG 2015), Beijing, China, 2015: 1-6.
[8] 胡志坚, 熊敏, 李岩, 等. 超高压同塔四回输电线路零序参数测量方法[J]. 中国电机工程学报, 2015, 35(17): 4548-4556.
Hu Zhijian, Xiong Min, Li Yan, et al.Measurement method of zero sequence parameters of EHV four-circuit transmission lines on the same tower[J]. Proceedings of the CSEE, 2015, 35(17): 4548-4556.
[9] 许侃, 范春菊. 不同电压等级部分耦合线路的单回线故障分析[J]. 电力系统自动化, 2015, 39(12): 81-87.
Xu Kan, Fan Chunju.Line fault analysis on partial coupling lines at differential voltage levels[J]. Automation of Electric Power System, 2015, 39(12): 81-87 .
[10] Chen Wenzhe, Hao Zhiguo, Guan Jun, et al.Analysis of pilot zero-sequence directional protection mal-function in double-circuit lines break-conductor fault and solutions[C]//2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), Changsha, China, 2015: 888-893.
[11] 肖遥, 范毅, 程澜, 等. 单回及同塔双回交流输电线路参数测量理论[J]. 中国电机工程学报, 2016, 36(20): 5515-5522, 5727.
Xiao Yao, Fan Yi, Cheng Lan, et al.A parameter measurement theory of single and double circuit AC transmission lines[J]. Proceedings of the CSEE, 2016, 36(20): 5515-5522, 5727.
[12] 陈文哲, 郝治国, 张保会, 等. 同塔双回线纵向故障特征分析及零序方向保护改进[J]. 电力自动化设备, 2016, 36(11): 133-139.
Chen Wenzhe, Hao Zhiguo, Zhang Baohui, et al.Characteristic analysis on longitudinal fault of dual-circuit transmission line and improvement of zero-sequence directional protection[J]. Electric Power Automation Equipment, 2016, 36(11): 133-139.
[13] 吴高波, 李健, 陈媛, 等. ±800kV与±500kV同塔双回直流输电线路电磁环境研究[J]. 电网技术, 2015, 39(9): 2532-2538.
Wu Gaobo, Li Jian, Chen Yuan, et al.Research on electromagnetic environment of ±800 kV and ±500 kV double-circuit DC transmission lines on the same tower[J]. Power System Technology, 2015, 39(9): 2532-2538.
[14] 刘欣, 黄少锋, 张鹏. 相电流差突变量选相在混压同塔输电线跨电压故障中的适应性分析[J]. 电工技术学报, 2015, 30(21): 118-126.
Liu Xin, Huang Shaofeng, Zhang Peng.Adaptability analysis of phase-selector based on sudden-change of phase-current-difference in cross-voltage fault occurred in mixed-voltage transmission lines[J]. Transactions of China Electrotechnical Society, 2015, 30(21): 118-126.
[15] 黄少锋, 刘欣, 张鹏, 等. 混压同塔线路跨电压接地故障对距离保护的影响分析[J]. 电力系统自动化, 2016, 40(1): 96-101.
Huang Shaofeng, Liu Xin, Zhang Peng, et al.Influence on distance protection caused by earthed cross-voltage fault in multi-circuit transmission lines system[J]. Automation of Electric Power Systems, 2016, 40(1): 96-101.
[16] 郭培育, 邰能灵, 于仲安, 等. 基于环流分量的同塔四回输电线路单回线故障选线新方法[J]. 电工技术学报, 2015, 30(24): 206-214.
Guo Peiyu, Tai Nengling, Yu Zhongan, et al.New single-line faulted selecting method for four-parallel transmission lines on the same tower based on loop flow component[J]. Transactions of China Electrotechnical Society, 2015, 30(24): 206-214.
[17] 刘琦, 邰能灵, 范春菊, 等. 基于单端电气量的不对称参数同塔四回线选相方法[J]. 电工技术学报, 2016, 31(4): 178-186.
Liu Qi, Tai Nengling, Fan Chunju, et al.Fault phase selection scheme for quadruple-circuit transmission lines with asymmetrical parameter based on single-ended electrical quantities[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 178-186.
[18] 刘琦, 邰能灵, 范春菊, 等. 同塔四回不对称参数线路的相模变换[J]. 电工技术学报, 2015, 30(18): 171-180.
Liu Qi, Tai Nengling, Fan Chunju, et al.Phase-mode transformation of asymmetry-parameter four-parallel lines on the same tower[J]. Transactions of China Electrotechnical Society, 2015, 30(18): 171-180.
[19] 黄少锋, 刘欣, 王洪敏, 等. 混压同塔四回线跨电压故障的短路计算[J]. 中国电机工程学报, 2016, 36(4): 993-1001.
Huang Shaofeng, Liu Xin, Wang Hongmin, et al.Cross-voltage short-circuit calculation on mixed-voltage four-circuit lines system[J]. Proceedings of the CSEE, 2016, 36(4): 993-1001.
[20] 陆政君, 范春菊, 刘琦, 等. 不同电压等级四回线的故障分析方法[J]. 中国电机工程学报, 2015, 35(13): 3303-3313.
Lu Zhengjun, Fan Chunju, Liu Qi, et al.Fault analysis method on four-parallel lines under different voltage levels[J]. Proceedings of the CSEE, 2015, 35(13): 3303-3313.
[21] 张琦兵, 邰能灵, 袁成, 等. 同塔四回输电线的相模变换[J]. 中国电机工程学报, 2009, 29(34): 57-62.
Zhang Qibing, Tai Nengling, Yuan Cheng, et al.Phase-mode transformation of four-parallel lines on the same tower[J]. Proceedings of the CSEE, 2009, 29(34): 57-62.
[22] 汤涌. 电力系统稳定计算复故障补偿算法[J]. 中国电机工程学报, 1999, 19(7): 78-80.
Tang Yong.A compensation faults solution in power system stability simulation[J]. Proceedings of the CSEE, 1999, 19(7): 78-80.
[23] Takahashi N, Ishiura N, Yajima S.Fault simulation for multiple faults by Boolean function manipulation[J]. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 1994, 13(4): 531-535.