配电网交流故障定位法的研究与实现
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摘要
配电网交流故障定位方法的思路是：线路出现单相接地故障以后,在停电离线状态下向故障相注入交流信号,然后携带手持交流信号探测器用二分法沿线路检测,直到找到故障为止。交流注入信号频率本文选择60Hz,相对与S信号注入法,称为低频交流注入法。通过本文的研究工作,取得了如下主要研究成果与结论：(1)首次将交流定位方法从经验提高到理论。(2)给出了交流信号源和交流信号探测器的设计方法。(3)探测器采用单片机C8051F310,这是目前比较先进的单片机。(4)数据显示部分用液晶显示模块以节省电池的耗电量,显示器与单片机的接口为串行通信接口。该方法可以地面检测,便于现场人员操作,并通过保定市定州赵家洼变电站线路的实验证明了其有效性。
The idea of AC locating fault method in distribution system is that injecting an AC signal into the fault phase after a single line to ground fault happened, and then diagnosing the fault along the transmission line with the handled AC signal detector utilizing dichotomy method until the fault is determined. The frequency of the injected AC signal used in this study is 60 Hz. Compared with the injected S signal technique, this method is called low frequency AC signal injection method. The study of this paper made the following key findings and conclusions:1. Exchange the AC positioning methods from experience to theory by the first time.2. The low-frequency AC positioning method is firstly proposed and is implemented.3. The detector use microcontroller C8051F310, which is the more advanced microcontroller.4. Data show uses LCD module in order to save battery power and the interface of display and microcontroller is serial communication interface.The proposed technique allows the ground detecting and is convenient for engineers'operation., the locating fault efficiency is improved and the validity of this method is proved by experiment.
配电网交流故障定位方法的思路是：线路出现单相接地故障以后,在停电离线状态下向故障相注入交流信号,然后携带手持交流信号探测器用二分法沿线路检测,直到找到故障为止。交流注入信号频率本文选择60Hz,相对与S信号注入法,称为低频交流注入法。通过本文的研究工作,取得了如下主要研究成果与结论：(1)首次将交流定位方法从经验提高到理论。(2)给出了交流信号源和交流信号探测器的设计方法。(3)探测器采用单片机C8051F310,这是目前比较先进的单片机。(4)数据显示部分用液晶显示模块以节省电池的耗电量,显示器与单片机的接口为串行通信接口。该方法可以地面检测,便于现场人员操作,并通过保定市定州赵家洼变电站线路的实验证明了其有效性。
The idea of AC locating fault method in distribution system is that injecting an AC signal into the fault phase after a single line to ground fault happened, and then diagnosing the fault along the transmission line with the handled AC signal detector utilizing dichotomy method until the fault is determined. The frequency of the injected AC signal used in this study is 60 Hz. Compared with the injected S signal technique, this method is called low frequency AC signal injection method. The study of this paper made the following key findings and conclusions:1. Exchange the AC positioning methods from experience to theory by the first time.2. The low-frequency AC positioning method is firstly proposed and is implemented.3. The detector use microcontroller C8051F310, which is the more advanced microcontroller.4. Data show uses LCD module in order to save battery power and the interface of display and microcontroller is serial communication interface.The proposed technique allows the ground detecting and is convenient for engineers'operation., the locating fault efficiency is improved and the validity of this method is proved by experiment.
The idea of AC locating fault method in distribution system is that injecting an AC signal into the fault phase after a single line to ground fault happened, and then diagnosing the fault along the transmission line with the handled AC signal detector utilizing dichotomy method until the fault is determined. The frequency of the injected AC signal used in this study is 60 Hz. Compared with the injected S signal technique, this method is called low frequency AC signal injection method. The study of this paper made the following key findings and conclusions:1. Exchange the AC positioning methods from experience to theory by the first time.2. The low-frequency AC positioning method is firstly proposed and is implemented.3. The detector use microcontroller C8051F310, which is the more advanced microcontroller.4. Data show uses LCD module in order to save battery power and the interface of display and microcontroller is serial communication interface.The proposed technique allows the ground detecting and is convenient for engineers'operation., the locating fault efficiency is improved and the validity of this method is proved by experiment.
配电网交流故障定位方法的思路是：线路出现单相接地故障以后,在停电离线状态下向故障相注入交流信号,然后携带手持交流信号探测器用二分法沿线路检测,直到找到故障为止。交流注入信号频率本文选择60Hz,相对与S信号注入法,称为低频交流注入法。通过本文的研究工作,取得了如下主要研究成果与结论：(1)首次将交流定位方法从经验提高到理论。(2)给出了交流信号源和交流信号探测器的设计方法。(3)探测器采用单片机C8051F310,这是目前比较先进的单片机。(4)数据显示部分用液晶显示模块以节省电池的耗电量,显示器与单片机的接口为串行通信接口。该方法可以地面检测,便于现场人员操作,并通过保定市定州赵家洼变电站线路的实验证明了其有效性。
The idea of AC locating fault method in distribution system is that injecting an AC signal into the fault phase after a single line to ground fault happened, and then diagnosing the fault along the transmission line with the handled AC signal detector utilizing dichotomy method until the fault is determined. The frequency of the injected AC signal used in this study is 60 Hz. Compared with the injected S signal technique, this method is called low frequency AC signal injection method. The study of this paper made the following key findings and conclusions:1. Exchange the AC positioning methods from experience to theory by the first time.2. The low-frequency AC positioning method is firstly proposed and is implemented.3. The detector use microcontroller C8051F310, which is the more advanced microcontroller.4. Data show uses LCD module in order to save battery power and the interface of display and microcontroller is serial communication interface.The proposed technique allows the ground detecting and is convenient for engineers'operation., the locating fault efficiency is improved and the validity of this method is proved by experiment.
引文
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[2]肖白,束洪春,高峰.小电流接地系统单相接地故障选线方法综述.继电器,2001,29(4)：16-20
[3]张惠芬.配电网单相接地故障检测技术研究：[博士学位论文].济南：山东大学,2006
[4]蔡维.小波及信号注入法定位小电流接地系统单相接地故障：[硕士学位论文].成都：西南交通大学,2005
[5]徐桂芝.小电流接地系统单相接地故障测距装置的研制：[硕士学位论文].济南：山东大学电力系统及其自动化系,2001
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[8]张慧芬,潘贞存,田质广,等.基于注入法的配电网接地故障检测方法.济南大学学报(自然科学版),2004,18(2)：164-168
[9]张慧芬.微机通用小电流接地系统单相接地保护：[硕士学位论文].济南：济南大学,1995
[10]桑在中,潘贞存,张慧芬.“S注入法”选线定位原理及应用.中国电力,1996,6(30)：44-45
[11]桑在中,潘贞存,李磊.“S注入法”与选线测距定位.电力系统及其自动化学报,1998.4(21)：35-39
[12]HANN IN EN E, L EHTON EN M. Characteristics of earth faults in electrical distribution networks with high impedance earthing. Electric Power System Research,1998,44:155-161
[13]陈奎.单相接地故障综合判据选线研究：[博士学位论文].徐州：中国矿业大学,2005
[14]翟敏,张炳达,刘长胜.基于S注入法的小电流系统消谐与选线一体化方案研究.现代电力,2000,20(3)：35-39
[15]杨万开,潘云江,王新年,等.MLB98小电流接地选线装置特性分析.电力情报,1994,(2)：20-22
[16]郝玉山,杨以涵,任元恒.MLN系列小电流接地微机选线装置动作原理.电力情报,1994,(2)：7-11
[17]王慧,范正林,桑在中.“S注入法”与选线定位.电力自动化设备,1999,19(3)：18-20
[18]Girgis A A. A New Fault Location Technique for Two and Three-terminal Lines. IEEE Trans PWRD,1992,7(1):98-197
[19]马佳.一种高精度低压配电网接地故障检测定位装置的研究：[硕士学位论文].武汉：华中科技大学,2002
[20]王新超,桑在中.基于“S注入法”的一种故障定位新方法.继电器,2001,29(7)：9-12
[21]何正友,李伟华,赵静.注入法在铁路自闭／贯通线的故障定位中的适应性研究.中国电机工程学报,2005,25(25)：141-146
[22]司冬梅,齐郑,钱敏,等.10 kV配电网故障定位的研究和实现,电力系统保护与控制,2008,36(18)：24-28
[23]严凤,杨奇逊,齐政,等.基于行波理论的配电网故障定位方法的研究.中国电机工程学报,2004,24(9)：37-43.
[24]杨鹏,戚宇林,杨景,等.基于60 Hz交流法的配电网单相接地故障定位研究.电力系统,2008,27(14)：57～60
[25]戚宇林,成艳,杨以涵,35 kV配电网电相接地故障综合定位方法,电网技术,2007,32(10)：38～42
[26]Bridger B, High-trsistance grounding, IEEE Trans Ind Appl,1983,19(1): 100-120
[27]DANIELJ LOVE, NASROLLAH HASHEMI. Considerations and associated protection in medium-voltage industrial and cogeneration systems, IEEE Transaction on industry applications,1988,24(4):20-24
[28]Seppo Hanninen, Seppo Hanninen, Matti Lehtonen, etl.A method for detection and location of high resistance earth faults. International Conference on Energy Management and Power Delivery.1998,495～500
[29]牟龙华.接地保护与故障点定位.徐州：中国矿业大学出版社,2000,1-20
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