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带并联电抗器的双回输电线路故障测距新方法

来源：电工电气发布时间：2023-03-31 13:31 浏览次数：291

带并联电抗器的双回输电线路故障测距新方法

张帅，李澄，严栋

(国网江苏省电力有限公司无锡供电分公司, 江苏无锡 214000)

摘要：为解决带并联电抗器输电线路两侧电流变化和线路参数不固定产生的故障测距误差问题，提出了一种双回输电线路故障测距新方法。采用集中参数线路模型分析正序、负序、零序故障网络，推导出与线路单位长度阻抗、导纳以及并联电抗器电抗值均无关的故障距离表达式。由线路分相电流差动保护装置纵向通道和横向通道获取四侧同步的模拟量数据，通过调整保护装置的插件功能模块研制出故障测距装置。装置试验结果表明，新方法的测距精度高于装置原有的方法，能解决线路两侧带并联电抗器和线路参数变化引起的测距误差问题，且经过渡电阻故障时仍具有较高的测距精度。

关键词： 并联电抗器；线路参数；横向通道；故障测距

中图分类号：TM472 ；TM773 文献标识码：A 文章编号：1007-3175(2023)03-0047-08

A New Fault Location Method of Double-Circuit Transmission

Lines with Parallel Reactors

ZHANG Shuai, LI Cheng, YAN Dong

（Wuxi Power Supply Company of State Grid Jiangsu Electric Power Co., Ltd, Wuxi 214000, China）

Abstract: In order to deal with fault location caused by current changes occurring to both sides of transmission lines with parallel reactors and unfixed line parameters, a new fault location method of double-circuit transmission lines is put forward. The paper adopts the lump parameter circuit model to analyze positive sequence, negative sequence and zero sequence fault networks, and generates the fault location expression which is irrelevant to line impedance and admittance per unit and the reactance value of parallel reactors. Then, after achieving four-side synchronized analog data from longitudinal and horizontal channels of the phase segregated current differential protection device,the authors invent the fault location device through adjusting the plug-in function module of this protection device. Test results show that this new method of fault location is more accurate than the old one. It not only can solve the problem of location error caused by changes of parallel reactors and line parameters, but also can have higher ranging accuracy when passing transition resistance faults.

Key words: parallel reactor; line parameter; horizontal channel; fault location device

参考文献

[1] APOSTOLOPOULOS C A, KORRES G N.A Novel Fault-Location Algorithm for Double-Circuit Transmission Lines Without Utilizing Line Parameters[J].IEEE Transactions on Power Delivery，2011，26(3)：1467-1478.

[2] AHSAEE M G, SADEH J.A Novel Fault-Location Algorith m for Long Transmission Lines Compensated by Series FACTS Devices[J].IEEE Transactions on Power Delivery，2011，26(4)：2299-2308.

[3] ABDELAZIZ A Y , MEKHAMER S F , EZZAT M .Fault Location of Uncompensated/Series-Compensated Lines Using Two-End Synchronized Measurements[J].Electric Power Components and Systems，2013，41(7) ：693-715.

[4] RAY P , PANIGRAHI B K , SENROY N . Hybrid methodology for fault distance estimation in series compensated transmission line[J].IET Generation Transmission & Distribution，2013，7(5) ：431-439.

[5] PARIKH U B, BHALJA B R.SVR-Based Current Zero Estimation Technique for Controlled Fault Interruption in the Series-Compensated Transmission Line[J].IEEE Transactions on Power Delivery，2013，28(3) ：1364-1372.

[6] JAFARIAN P , SANAYE-PASAND M . High-Frequency Transients-Based Protection of Multiterminal Transmission Lines Using the SVM Technique[J].IEEE Transactions on Power Delivery，2013，28(1)：188-196.

[7] FARSHAD M, SADEH J.A Novel Fault-Location Method for HVDC Transmission Lines Based on Similarity Measure of Voltage Signals[J].IEEE Transactions on Power Delivery，2013，28(4)：2483-2490.

[8] SUONAN Jiale, GAO Shuping, SONG Guobing, et al.A Novel Fault-Location Method for HVDC Transmission Lines[J].IEEE Transactions on Power Delivery，2010，25(2)：1203-1209.

[9] HE Z Y , LIAO K , LI X P , et al . Natural Frequency-Based Line Fault Location in HVDC Lines[J].IEEE Transactions on Power Delivery，2014，29(2)：851-859.

[10] NANAYAKKARA K , RAJAPAKSE A , WACHAL R .Traveling-Wave-Based Line Fault Location in Star-Connected Multiterminal HVDC Systems[J].IEEE Transactions on Power Delivery，2012，27(4)：2286-2294.

[11] 苏斌，董新洲，孙元章. 特高压带并联电抗器线路的行波差动保护[J] . 电力系统自动化，2004，28(23)：41-44.

[12] 林达，王慧芳，何奔腾，等. 基于波形相关性的带并联电抗器线路永久性故障判别方法[J] . 电力系统自动化，2013，37(16)：80-84.

[13] 王庆庆，王慧芳，林达，等. 带并联电抗器线路单相永久性故障的识别方法[J] . 电力系统自动化，2015，39(5)：101-106.

[14] 索南加乐，孙丹丹，付伟，等. 带并联电抗器输电线路单相自动重合闸永久故障的识别原理研究[J].中国电机工程学报，2006，26(11)：75-81.

[15] 索南加乐，宋国兵，邵文权，等. 两端带并联电抗器输电线路永久故障判别[J] . 电力系统自动化，2007，31(20)：56-60.

[16] 林富洪. 超高压带并联电抗器线路的故障测距算法[J]. 现代电力，2010，27(1)：40-44.

[17] 刘东超，李永丽，曾志安. 带并联电抗器的双回线故障测距算法研究[J] . 电力系统及其自动化学报，2006，18(2)：5-9.

[18] 郭容，刘新东，曾锐明. 带并联电抗器高压长线路的故障测距算法研究[J] . 现代电力，2013，30(4)：62-66.

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