基于故障全量的输电线路纵联阻抗算法

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (06): 814-820.

基于故障全量的输电线路纵联阻抗算法

夏经德，索南加乐，何世恩，王莉，刘凯，许立强

（西安交通大学电气工程学院，西安 710049）

收稿日期:2010-07-10 出版日期:2011-06-29 发布日期:2011-06-29
基金资助:
国家自然科学基金（50677051，50877061），高等学校博士学科点专项科研基金（20070698057）资助项目

A Transmission Line Pilot Impedance Algorithm Based on Fault Total Contents

XIA Jing-De, SUO 南Jia-Le, HE Shi-恩, WANG Li, LIU Kai, XU Li-Qiang

(School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Received:2010-07-10 Online:2011-06-29 Published:2011-06-29

摘要/Abstract

摘要： 提出了一种基于线路两端故障全量的输电线路纵联阻抗算法，在准确地总结基于故障分量纵联阻抗特性的基础上，充分地描述了在各种运行条件下负荷分量对计算结果的影响，确立了合理的保护动作定值.该算法不需专设保护启动元件，在系统运行的任何时刻，一旦计算结果小于保护动作定值，就可确定为区内故障，线路两端保护可协同动作；否则不论是否发生故障，保护都可靠不动.在电磁暂态程序（EMTP）中建立1 MV 500 km线路模型，使用兰州东至咸阳750 kV动模数据，进行了各种故障下的仿真.仿真结果表明，所提出的算法稳定可靠，抗过渡电阻能力较强，动作灵敏，具有自选相能力，能正确判断出上述各故障状态.

关键词: 两端电气量, 幅值判据, 输电线路, 故障全量, 纵联阻抗

Abstract: A pilot protection algorithm of transmission line based on the fault total content of line both terminals was proposed. According to the exact analysis of the pilot impedance characteristics based on the fault conponent, this algorithm adequately described the computing result influenced by the load component under various operation condition,and established the reasonable protection tripping setting value. It does not set special protection starting unit; at any time of system running, when the result is less than the protection tripping setting value, the fault is determined as the internal and the protections at line’s two terminals may cooperatively trip; otherwise, the protection is blocked whether the fault occurs or not. The algorithm may ensure the stable and reliable results, has strong ability of resisting transition resistance, shows sensitive operating reaction characterictics and possesses selfselecting phase capacity. It builds 1 000 kV 500 km line model on electromagnetic transients program (EMTP), uses the dynamic model data from Lanzhoudong to Xianyang 750kV, executes the simulations under different faults. The simulation results indicate that this algorithm can correctly judge the aforesaid various fault states.

Key words: transmission line, fault total contents, pilot impedance, twoterminal electrical quantities, amplitude criterion

中图分类号:

TM773

夏经德, 索南加乐, 何世恩, 王莉, 刘凯, 许立强. 基于故障全量的输电线路纵联阻抗算法[J]. 上海交通大学学报（自然版）, 2011, 45(06): 814-820.

XIA Jing-De, SUO 南Jia-Le, HE Shi-恩, WANG Li, LIU Kai, XU Li-Qiang. A Transmission Line Pilot Impedance Algorithm Based on Fault Total Contents[J]. Journal of Shanghai Jiaotong University, 2011, 45(06): 814-820.

参考文献

［1］伍叶凯,郁惟镛.微机型短线路保护原理及通信编码方案［J］.上海交通大学学报,1999,33(12):15291532.

WU Yekai, YU Weiyong. Microprocessor based protection theory and communication code of short line［J］. Journal of Shanghai Jiaotong University, 1999, 33(12):15291532.

［2］黄红兵,黄丽云.浙江省500 kV线路主保护的光纤通道配置探讨［J］. 电力系统通信,2005,26(151):6164.

HUANG Hongbing, HUANG Liyun. Discussion of optic fiber channel configura tion for main protection of 500 kV power line in Zhejiang［J］. Telecommunications for Electric Power System, 2005,26(151):6164.

［3］贾贵玺,梁斌,贺家李.光纤通讯微机保护系统设计［J］.电力系统及其自动化学报,2006,18(2):9598.

JIA Guixi, LIANG Bin, HE Jiali. System design of microprocessorbased protection using optical fiber communication［J］. Proceedings of the CSUEPSA, 2006, 18(2): 9598.

［4］张健,远振海,郭志忠.基于电子式互感器的超高压长线全电流差动保护的研究［J］.高压电器,2009,45(3):1822.

ZHANG Jian, YUAN Zhenhai, GUO Zhizhong. Study of the entire current differential protection of EHV transmission lines based on electronic transducer［J］. High Voltage Apparatus, 2009, 45(3):1822.

［5］杨淑连.一种新型的光学电压传感器［J］.传感器技术,2006,19(4): 988990.

YANG Shulian. A new optical voltage sensor［J］. Chinese Journal of Sensors and Actuators, 2006,19(4): 988990.

［6］袁敬中.高压全线路快速纵联电流差动保护［J］.华北电力技术,2003(7): 4246.

YUAN Jingzhong. EHV transmission line speed current differential protection［J］. North China Electric Power, 2003(7): 4246.

［7］许捷,俞拙非,陈建玉,等.超短线快速光纤纵联电流方向保护的实践［J］.继电器,2006,34(11):2123.

XU Jie, YU Zhuofei, CHEN Jianyu, et al. Practice of fast pilot currentd irectional protection with optic fiber channel for short transmission lines［J］. Relay, 2006, 34(11): 2123.

［8］伍叶凯, 邹东霞.分相式微机电流差动保护灵敏度的研究［J］. 上海交通大学学报,1997,31(12):138143.

WU Yekai, ZOU Dongxia. Study on sensitivity of microprocessor based split phase current differential protection［J］. Journal of Shanghai Jiaotong University, 1997, 31(12): 138143.

［9］汤俊,王晓茹.反应重负荷下高阻故障的稳态量线路差动保护判据［J］. 中国电机工程学报,2008,28(4):7277.

TANG Jun, WANG Xiaoru. Current differential protection criterion using steady currents for heavyload line with high fault resistance［J］. Proceedings of the CSEE, 2008, 28(4): 7277.

［10］汤俊,王晓茹,桑丙玉.稳态量分相电流差动保护判据制动特性的改进［J］.电力系统自动化,2008,32(11):4448.

TANG Jun, WANG Xiaoru, SANG Bingyu. Improvement on restraining characteristic of a dispersed phase current differential protection criterion using steady currents［J］. Automation of Electric Power System, 2008, 32(11): 4448.

［11］夏经德,索南加乐,王莉,等.基于纵联阻抗幅值的输电线路纵联保护［J］.电力系统保护与控制,2011,39(4):4351.

XIA Jingde, SUONAN Jiale, WANG Li, et al. A transmission line pilot protection based on the amplitude of the pilot impedance［J］. Power System Protection and Control, 2011, 39(4): 4351.

［12］邱关源.电路［M］.第4版.北京:高等教育出版社,1999:173189.

[1]	王炜1，袁奇1，顾俊杰1，邰能灵2. X射线无损探伤技术在检测输电线路压接金具中的应用[J]. 上海交通大学学报（自然版）, 2018, 52(10): 1189-1194.
[2]	江安烽1，李锐海2，牛萍3，王国利2，黄柏1，傅正财1. 后续雷击对输电线路绕击耐雷性能的影响研究[J]. 上海交通大学学报（自然版）, 2015, 49(04): 411-417.
[3]	杨晓辉1,2，张博2，杨威2，傅正财1. 500 kV六分裂导线舞动时的动张力变化特征[J]. 上海交通大学学报（自然版）, 2014, 48(09): 1218-1224.
[4]	江安烽1, 李锐海2, 王国利2, 傅正财1. 特高压直流输电线路雷电屏蔽模型试验设计 [J]. 上海交通大学学报（自然版）, 2012, 46(08): 1334-1339.
[5]	朱磊, 马殿光, 王胜永, 史战果, 向琛, 张秀彬. 电网冰凌灾害的供电不间歇智能防控[J]. 上海交通大学学报（自然版）, 2012, 46(07): 1131-1137.