CN101281229A - Power distribution network distribution circuit fault location system - Google Patents

Power distribution network distribution circuit fault location system Download PDF

Info

Publication number
CN101281229A
CN101281229A CN 200810069726 CN200810069726A CN101281229A CN 101281229 A CN101281229 A CN 101281229A CN 200810069726 CN200810069726 CN 200810069726 CN 200810069726 A CN200810069726 A CN 200810069726A CN 101281229 A CN101281229 A CN 101281229A
Authority
CN
China
Prior art keywords
matrix
measurement
transformer
pc
gsm
Prior art date
Application number
CN 200810069726
Other languages
Chinese (zh)
Other versions
CN101281229B (en
Inventor
为 何
张占龙
冰 李
毛玉星
科 王
军 邓
Original Assignee
重庆大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 重庆大学 filed Critical 重庆大学
Priority to CN2008100697265A priority Critical patent/CN101281229B/en
Publication of CN101281229A publication Critical patent/CN101281229A/en
Application granted granted Critical
Publication of CN101281229B publication Critical patent/CN101281229B/en

Links

Abstract

The invention relates to a power distribution network distribution circuit fault location system, including a plurality of measurement communication units A, PC and GSM terminals C. The input ends of the signal capture module of each measurement and communication unit are respectively connected with the auxiliary terminals of the three phase of the distributing transformer to be measured; messages are transmitted between the GSM module of each measurement and communication unit and the GSM module of PC and GSM terminals in a wireless communication mode. The inventive fault location includes: establishing a main wiring scheme according to the power supply power tidal current direction and connected relation of the transformer and bus, and endowing geographical information to each transformer; establishing an associated matrix, condition matrix and fault point locating matrix, locating the position of the fault by the fault point locating matrix, thereby implementing power distribution network distribution circuit remote failure diagnosis and locating, rapidity judging the fault section, saving maintenance time and having an effective function to the safe stable operation of the electrical distribution network.

Description

配电网配电线路故障定位系统技术领域本发明属于电力系统领域,特别涉及一种配电网线路故障点定位系统。 BACKGROUND Power distribution system distribution line fault locating system of the present invention is in the field of power, and particularly to a power line fault point location system distribution. 背景技术电力系统的输电线以及配电线路大部分棵露在空中,因而最容易遭受雷击,并造成供电中断、供电设备损坏等事故,典型的故障类型表现为配电变压器运行中的缺相、断线、电压跌落等以及人为因素造成的线电压与相电压中线接错,引起用电设备的过压损坏。 Electric power system of transmission lines and distribution lines, most of the trees exposed in the air, and thus most vulnerable to lightning, and caused power outages, power supply equipment damage and other accidents, typical of the type of fault the performance of distribution transformers in operation phase, disconnection, the voltage drop and the like relative to the line voltage and the neutral voltage caused by human factors mis cause overvoltage damage electrical equipment. 当变压器或线路发生故障时,电力部门往往无法在短时间之内确定故障类型、以及变压器所处的位置和所归属的线路,这给电力用户以及电力部门带来极大不便。 When the transformer or line failure, power sector are often unable to determine the location of the fault type, and in which the transformer and line belongs in a short time, which caused great inconvenience to electricity consumers and the power sector. 经估算, 一个输送功率为400,的500kV输电线路,若因为线路故障使得输电中断1小时,直接经济损失达120万元,但由于500kV输电网线路较少,中断性故障发生的可能性相对较少,而10kV的配电线路是电网公司至用户主要网路,是供电部门发生故障的主要源头,约占供电系统故障的90°/。 The calculation is a power of conveyance 400, the 500kV transmission line, if the line fault such as power transmission interrupted one hour, the direct economic loss of 120 million, but due to less 500kV grid lines, the possibility of interrupting a fault occurs relatively less, while the 10kV distribution lines is the main power grid companies to network users, the electricity sector is the main source of failure, accounting for failure of the power supply system 90 ° /. 以上,造成的直接的经济损失和间接的社会影响无法估量,所以,安全和可靠供电的关键在配电网,而配网的安全关键在变压器和高压线路(llOkV-10kV)的正常运行。 Above, resulting in direct economic losses and indirect social impact immeasurable, so the key to safe and reliable power supply in the distribution network, and with safety-critical network uptime in transformers and high voltage lines (llOkV-10kV) is. 发明内容本发明的目的就是提出一种基于电网络理论的配电网配电线路故障定位系统。 Object of the present invention is to provide a distribution line fault location system based on the electrical distribution network the network theory. 它利用手持GPS定位仪测量每一台配电变压器的地理信息,包括经度、 炜度,并将信息通过串口传递给PC机;再利用安装在每一台配电变压器上的测量与通信单元测量变压器的三相电压状态信息,通信单元通过GSM网络发送短信(SMS )将状态信息发送到PC机及通讯模块;GSM终端接收到各台变压器的状态信息后由安装在PC机上的监控软件结合故障定位算法判断出故障点,并显示其地理位置。 It was measured with a handheld GPS location information for each geographical distribution transformers, including the longitude, Wei degrees, and passes the information to the PC through the serial port; re-measured using the measurement with the communication unit installed on each of the distribution transformers phase voltage status of the transformer, the communication unit transmits the message through the GSM network (SMS) to send status information to the PC, and communication module; state information of a GSM terminal receiving each transformer by the monitoring software installed on a PC in conjunction with the fault fault location algorithm determines the points and display its location. 工作人员可以快速定位故障点。 Staff can quickly locate the point of failure. 该系统结构简单, 易于实现。 The system is simple and easy to implement. 本发明提出一种配电网配电线路故障定位系统,其特征在于:包括若干个测量及通讯单元A、 PC机及GSM终端C:1、测量及通讯单元由测量及通讯单元的中央处理器、GSM才莫块、测量及通讯单元的电源、信号采集模块(电压传感器)组成,其连接关系为:信号釆集沖莫块的输出端与测量及通讯单元的中央处理器的A/D端相连,GSM模块与测量及通讯单元的中央处理器的串口相连,测量及通讯单元的电源与测量及通讯单元的中央处理器、GSM模块、信号采集模块的电源端相连;2 、 PC机及GSM终端由GSM终端和PC机组成,GSM终端电路的输入端与PC 机的串口连接;3、 将每个测量及通讯单元的三个信号采集模块的输入端分别连接在被测的配电变压器三相的副端;由手持GPS定位仪B采集每个被测的配电变压器的地理信息,并将信息通过串口传递给PC机;每个测量及通讯单元的 The present invention provides a power distribution line system with fault location, characterized by: a plurality of measurement and communication unit A, PC machine and GSM terminal C: 1, and the measurement by the measuring unit and the communications central processing unit communications , GSM only Mo blocks, power measurement and communication unit, a signal acquisition module (voltage sensor), whose connection relationship is: output signal Mo preclude overshoot current block and the central processor and the communication unit measuring an a / D terminal connected to the GSM module and the central processor unit of measurement and communication serial port, a central processor connected to the power supply terminal of the measurement and the communication unit and communication unit of measurement, GSM module, a signal acquisition module; 2, PC machine and GSM GSM terminal by the terminal and a PC composition, GSM terminal input circuit and the PC serial port; 3, the three input terminals of each measuring signal acquisition module and the communication unit are connected to the three distribution transformer tested phase, the secondary-side; B by the handheld GPS locator collecting geographic information for each of the measured distribution transformer, and transmitted through the serial information to the PC; and communication unit of each measurement GSM模块与PC机及GSM终端的GSM模块之间通过无线通讯的方式传递信息;4、 故障的判定:1) 、在PC机上根据供电功率潮流方向及变压器与母线的连接关系建立主接线图,采集每个被测的配电变压器的地理信息,并将信息通过串口传递给PC机,赋予每个变压器地理信息;定义变压器的个数为m,相邻两个交点之间为一个支路,则有n个支路,在此基础上建立关联矩阵A^, A^中每个元素a^的定义为:当流入节点i的功率通过支路j,则aij=l,当流入节点i的功率与支路j没关联是,ai产0,其中(Ki《m, 0《j《n;2) 、由安装在每台配电变压器上的测量及通讯单元报告的配电变压器三相电压状态可形成每相的配网电压状态矩阵Smxl =,定义Su为当第i台配电变压器A相电压正常时,Si产l;反之,当第i台配电变压器A相电压为0时Si「0;3) 、根据关联矩阵A^和状态矩阵S^,形成故障点定位矩 Between the GSM module and the GSM module the PC and the GSM terminal communicating information by wireless communication; 4, failure determination: 1), to establish the main wiring diagram of the power supply of power flow direction and the connection relationship transformer and bus bar on the PC, each collecting geographic information measured distribution transformer, and transmitted to the information through the PC serial port, each transformer given geographic information; transformer is defined as the number of m, between two adjacent intersections of a branch, there are n number of branches, in association on the basis of matrix a ^, a ^ a ^ each element is defined as: when the power flows through the branch node i, j, then aij = l, when flowing into node i not associated with a branch j is the power, producing AI 0, wherein (Ki "m, 0" j "n; 2), by a distribution transformer is mounted on each of the distribution transformers and the communication unit reports the measured three-phase voltage status may be formed with a voltage distribution network for each state matrix Smxl = Su is defined as the i-th stage when the phase voltage a normal distribution transformer, Si yield L; the other hand, when the i-th distribution transformer voltage is zero when the a-phase Si "0; 3), based on the associated state matrix and the matrix A ^ S ^, form a fault point location moments 阵P^,即取状态矩阵Sm><1中为0的元素的行下标,并令与其对应的关联矩阵A的那一行元素全部为0,即得故障点定位矩阵P^"4) 故障点的判定:当P=A,即矩阵P中没有全为O的列,说明没有报警短信发送到监控室,每条支路工作正常;当矩阵P中有且只有一列全为0,则所列支路的末端线路断线; 当矩阵P中有多于一列全为0时,说明配网中间支路断线引起多个节点发生故障,为寻找故障支路的编号,比较全0列的列下标,其值最小的列下标即为故障支路编号;5)报警:在主接线图上显示故障点的位置。 Matrix P ^, i.e. taking state matrix Sm> <1 is a row index of the element 0, and let its line that the associated element of the matrix A corresponding to the all zero, i.e., to obtain fault point location matrix P ^ "4) Fault point determination: when P = a, i.e. there is no full matrix P O for the column, indicating no alarm messages sent to the control room, each branch work; matrix P when there is only one and all 0, then the end of the line disconnection charged passage; matrix P when there is more than one column are all zero, indicating that the intermediate branch distribution network disconnection caused by a plurality of node failure, the failure to find the number of the branch, comparing the full 0 column index, which is the minimum value of the faulty branch is the column index number; 5) alarm: the display position of a fault point on a line diagram. 本发明能够应用于:1. 保护lOkV-O. 4kV配电变压器;2. 保护10kV配电线路;3. 确定那一台配电变压器或哪一段配电线路发生故障,实现全配电网的故障定位。 The present invention can be applied: 1 lOkV-O 4kV protection of distribution transformers; protective 10kV distribution line; 3 determines that distribution transformer or a distribution line section which fails to achieve furnished grid.... fault location. 本发明可达到如下性能指标1. GPS定位精度达到0. 2秒;2. 全网故障定位时间小于2分钟。 The present invention can achieve performance following 1. GPS positioning accuracy reaches 0.2 seconds; 2 whole network fault location less than 2 minutes. 本发明带来的积极效果时显而易见的,即应用本发明,能够在短时间之内对故障变压器或其挂接的支路线路进行定位,指导尽快排除或处理输电线路故障。 When the apparent positive effects brought about by the present invention, i.e., application of the present invention, it is possible to mount the transformer fault or a branch line positioned in a short time, to exclude or to guide treatment as soon as transmission line faults. 不仅对及时修复线路和保证可靠供电至关重要,而且对电力系统的安全稳定和经济运行都有十分重要的意义。 Not only the significance of timely repair lines and ensure reliable power supply is essential, but also for security, stability and economic operation of power systems are very important. 基于上述因素,通过配电网配电线路故障定位系统,可实现配电网配电线路远程故障诊断与定位、迅速判断出故障区段,节约维修时间,对配电网络的安全稳定运行起到有效的作用。 Based on these factors, the distribution network distribution line fault locating system can achieve distribution line fault diagnosis and remote distribution networks, quickly determine the fault section, maintenance time saving, safe and stable operation of the distribution network functions effective role. 附图说明图l是本发明的系统结构框图; 图2是本发明的实施例的系统结构框图; 图3是本发明的实施例的主接线图; 图4是本发明的故障定位流程图。 BRIEF DESCRIPTION OF DRAWINGS Figure l is a block diagram of the system of the present invention; FIG. 2 is a system block diagram showing an embodiment of the present invention; FIG. 3 is a line diagram of an embodiment of the present invention; FIG. 4 is a flowchart of fault location according to the present invention. 附图1中:A! ~ Am -测量及通讯单元、C - PC机及GSM终端; 附图2中:A, ~ A8 -测量及通讯单元、B _手持GPS定位仪、C - PC机及GSM 终端,1-测量及通讯单元的中央处理器、2-GSM模块、3-测量及通讯单元的电源、4-信号采集模块、5-手持GPS定位仪的中央处理器、6-存储模块、7-GPS 模块、8-人机接口、 9-手持GPS定位仪的电源、10-串口组成、11-GSM终端、 12-PC机。 In Figure 1: A ~ Am - measurement and communication unit, C - PC and GSM terminal machine; Figures 2:! A, ~ A8 - measurement and communication unit, B _ handheld GPS locator, C - PC machine and GSM terminal, a central processing unit communications measurement and 1-, 2-GSM module, power and communication unit of measurement 3-, 4- signal acquisition module, 5- handheld GPS locator central processor, 6- storage module, 7-GPS module, a human interface 8-, 9- power handheld GPS locator, 10 serial composition, 11-GSM terminals, 12-PC machine. 附图3中:所示为8台配电变压器,IO条支路的配电网络。 3 of the accompanying drawings: FIG 8 is a distribution transformers, distribution networks IO branch circuits. 每一台安装一个测量及通讯单元。 Each installation of a measurement and communication unit. 配变编号、支路号按照功率潮流方向命名。 Distribution transformer number, branch number named according to the power flow direction. 图中Tl~ T8为配电变压器。 FIG. Tl ~ T8 of distribution transformers. 具体实施方式下面结合附图给出的一个非限定性的实施例,对本发明作进一步的说明。 A non-limiting embodiments of the drawings are given below in connection with specific embodiments, the present invention will be further described. 参见图1:图中的配电网配电线路故障定位系统包括测量及通讯单元A及PC机及GSM终端C,还可以包括一个手持GPS定位仪B、其中:1、 测量及通讯单元由测量及通讯单元的中央处理器1、 GSM才莫块2、测量及通讯单元的电源3、信号采集模块4组成,其连接关系为:信号采集模块的输出端与测量及通讯单元的中央处理器的A/D端相连,GSM模块与测量及通讯单元的中央处理器的串口相连,测量及通讯单元的电源与测量及通讯单元的中央处理器、GSM模块、信号采集模块的电源端相连;2、 手持GPS定位仪由手持GPS定位仪的中央处理器5、存储模块6、 GPS 模块7、人机接口8、手持GPS定位仪的电源9和串口10组成,其连接关系为:存储模块、GPS模块、人机接口和串口与手持GPS定位仪的中央处理器的I/O 口连接,手持GPS定位仪电源与所有模块的电源端连接;3、 PC机及GSM终端由GSM11终 Referring to FIG. 1: FIG distribution network comprising a distribution line measurement and fault location system, and the PC communication unit A GSM terminal and C, may also include a handheld GPS locator B, where: 1, measured by the measurement means and communication and the communications unit CPU 1, GSM 2 was Mo block, power measurement and the communication unit 3, the signal acquisition module 4, whose connection relationship: signal at the output of the measurement acquisition module and the central processor of the communication unit a / D terminal is connected to the GSM module connected to the central processing unit of measurement and communication port connected to the power supply terminal and a central processing unit and the measuring unit measuring communication units and communication, GSM module, a signal acquisition module; 2, handheld handheld GPS locator GPS locator by a CPU 5, a memory module. 6, 7 GPS module, a human interface 8, handheld GPS locator and the port 10 of the power source 9, whose connection relationship: a storage module, GPS module , human interface with a serial port and a central processor of the handheld GPS locator I / O port is connected to a handheld power supply terminal and the GPS locator is connected to all modules; 3, PC machine and GSM terminal end of GSM11 和PC机12组成,GSM终端电路的输入端与PC机的串口连接;4、 将每个测量及通讯单元的三个信号采集模块的输入端分别连接在被测的配电变压器三相的副端;由手持GPS定位仪B采集每个被测的配电变压器的地理信息,并将信息通过串口传递给PC机;每个测量及通讯单元的GSM才莫块与PC机及GSM终端的GSM模块之间通过无线通讯的方式传递信息。 And PC-12 composition, GSM terminal input circuit and the PC serial port; 4, the input terminal of each of the three signal acquisition module measurement and communication unit are connected to the secondary of the three phase transformer tested end; B by a handheld GPS locator collected each distribution transformer tested geographic information, and the information is transmitted to the PC through the serial port; GSM communication unit and before each measurement block MO and PC GSM and GSM terminal transmitting information between the modules by wireless communication. 本实施例中,所述测量及通讯单元中的信号采集模块4由三个电压传感器41a、 41b、 41c和它们的低通滤波器42构成。 In this embodiment, the measuring unit and communication signal acquisition module 4 consists of three voltage sensors 41a, 41b, 41c and their low-pass filter 42. 所述电压传感器及其低通滤波器均为市售产品。 The low-pass filter and the voltage sensor are commercially available products. 在本测量及通讯单元中,所述电源3由开关电源31、锂电池32、充电控制电路33、直流电压升压转换电路34组成;充电控制电路33 通过开关电源31与接在配电变压器变压器的副端,充电控制电路33的输出端串接锂电池32后与直流电压升压转换电路34连接。 In the present measurement and communication unit, the power supply switch 3 by a power source 31, the lithium battery 32, the charging control circuit 33, the DC voltage boost converter circuit 34 composed; charge control circuit 33 via the switch 31 and the power distribution transformers connected to the transformer secondary side, the charging control circuit 33, the output terminal of the lithium battery 32 connected in series with the DC voltage boost converter circuit 34 are connected. 所述所述电源3由开关电源31、锂电池32、充电控制电路33、直流电压升压转换电路34均为公知电路。 3 of the power supply switching power supply 31, the lithium battery 32, the charging control circuit 33, a DC voltage of the boost converter circuit 34 are well known. 上述手持GPS定位^f义,为市售产品,其^(义结构图如图2所示,采用UBL0X 公司的GPS模块LEA-4H,该模块可达到0. 2秒的精度。使用时,在配电变压器旁启动定位仪,输入变压器编号,然后采集地理信息并存储。釆集完所有配电变压器的地理信息后通过串口将数据发送给PC机。所述测量及通讯单元结构框图如图2所示,安装在每一台配电变压器的副端,如图2中的T1〜T8,信号采集模块采集变压器副端的三相电压值,采用的是精度0.5级的电压互感器,如果发现该台变压器一相或多相电压低于或高于规定电压值时将通过GSM模块发送状态信息给GSM终端。此外,当PC 机要查询变压器状态时,发送查询短信,测量及通讯单元也将发送状态信息给GSM终端。所述PC机及GSM终端结构框图如图2所示。安装在监控中心,除了PC 机和GSM终端,PC机中包含故障的判定及确定的相关软件。 F ^ handheld GPS positioning above sense, a commercially available product, which ^ (sense configuration shown in Figure 2, using UBL0X's GPS module LEA-4H, the module can achieve accuracy of 0.2 seconds. In use, distribution transformer locator next start, number input transformer, then collect and store geographical information. preclude complete set of all the distribution transformer geographic information through the serial port to send data to the PC. the measurement and communication unit block diagram in FIG. 2 shown, mounted on each end of the sub-distribution transformers, T1~T8 in FIG. 2, the signal acquisition module of the three-phase transformer the secondary-side voltage value, 0.5 is used in precision voltage transformer, if it finds that the status information is transmitted via a GSM module or multiphase transformer voltage is below or above a predetermined voltage value to the GSM terminal. Further, when the PC confidential status query transformer, sends a query message, measurement and communication unit also sends status information to the GSM terminal. the GSM terminal and the PC block diagram shown in Figure 2. installed in the control center, in addition to GSM terminal and the PC, the PC is included in the failure determination and the determination of related software. 本发明的故障判定及确定的方法基于的算法:对于一个由m个节点、n个支路的配网,根据功率潮流方向列出支路-节点关联矩阵A^, A^中每个元素aij的定义如下:当流入节点i的功率通过支路j,则ai产l,当流入节点i的功率与支路j没关联是,a,产O。观察图2,知流向所有变压器的潮流都通过支路①,即支路①为配网最前端,可得到关联矩阵A^。如下:①②③④⑤⑥⑦⑧⑨⑩1 1 1 1 0 01 10 0 0 010 0 0 01 10 010 0由安装在每台配电变压器上的测量及通讯单元报告的配电变压器三相电压状态可形成每相的配网电压状态矩阵Sraxl,分为Sam"、 Sbmxl、 Scm",这里仅以A相为例,定义sau为当第i台配电变压器A相电压正常时,sau=l;反之,当第i台配电变压器A相电压为0时sai产0。所得矩阵如下:>Sa = [l 1 1 1 1 1 1 lf'当有线路断线等故障发生时,影响到的配电变压器上的测量及通讯单元发送 The method of the present invention is determined and the fault is determined based on the algorithm: For one, the n-th distribution network branches, branch by m nodes List The power flow direction - node incidence matrix A ^, A ^ each element aij is defined as follows: when the power flows through the branch node i, j, ai yield the L, when the power flowing into the branch j association is not node i, a, viewed in FIG. 2 O. production, known current flow are all transformers ① through the branch, i.e. the most distal ① branch distribution network, incidence matrix a ^ is obtained as follows:. ①②③④⑤⑥⑦⑧⑨⑩1 1 1 1 0 01 10 0 0 010 0 0 01 10 010 0 by the distribution transformer is mounted on each of three phase transformer and the voltage measurement state of the communication unit reports the distribution network may be formed with a voltage condition of each matrix Sraxl, into Sam ", Sbmxl, Scm", where only the phase a as an example, is defined as when the i-th sau A distribution transformer normal phase voltage, sau = l; on the contrary, when the first phase i A distribution transformer voltage is 0 sai yield 0. The resulting matrix as follows:> Sa = [l 1 1 1 1 1 1 lf 'when when there is a failure such as disconnection line, measurement and communication on the impact of the distribution transformer unit transmits 态短信,根据关联矩阵A^和状态矩阵S^,形成故障点定位矩阵P^。取状态矩阵Sm!<1中为0的元素的行下标,并令与其对应的关联矩阵A的那一行元素全部为0,即得故障点定位矩阵P^n。流程图见附图4。 故障点定位的判据:1、 PA,即P中没有全为O的列说明没有报警短信发送到监控室,每条支路工作正常;2、 矩阵P中有且只有一列全为0因为功率流向是连续的,并且配网图中节点支路编号是由首段到末端,所以这种情况下只可能是Pi产O ( i=l, 2…,m),即配网末端线路j断线;3、 矩阵P中有多于一列全为O这种情况说明配网中间支路被盗引起多个节点发生故障,为寻找故障支路的编号,比较全O列的列下标,其值最小的列下标即为故障支路编号。 State message, based on the associated matrices A ^ and state matrix S ^, form a fault point location matrix P ^. Gripping state matrix Sm! <1 is the row index of the element 0, and let therewith the line associated with the matrix A corresponding to all 0 elements, i.e., to obtain fault point location matrix P ^ n criterion flowchart see reference 4. fault point location:. 1, PA, i.e., P O is not full column described alarm message is not sent to the control room , each branch work; 2, and only the matrix P are all zero because a power flow is continuous, and the distribution network nodes in the graph by the segment number is the first leg to the end, it is only possible in this case Pi is the production of O (i = l, 2 ..., m), i.e. j broken end of the line distribution network; 3, matrix P has more than a full description of this case the intermediate O distribution network branches caused plurality stolen node failure, the failure to find the number of branch, compare all O column index column, which column index value is the smallest number that is faulty branch. 结合附图3给出的实施例对本发明提供的故障判定及确定方法做进一步说明。 In conjunction with the accompanying drawings given fault Example 3 of the present invention provides a method of determining further described and determined. 附图3中:所示为8台配电变压器,IO条支路的配电网络。 3 of the accompanying drawings: FIG 8 is a distribution transformers, distribution networks IO branch circuits. 每一台安装一个测量及通讯单元。 Each installation of a measurement and communication unit. 配变编号、支路号按照功率潮流方向命名。 Distribution transformer number, branch number named according to the power flow direction. T1〜T8 为配电变压器。 T1~T8 as distribution transformers. 本实施例的故障判定及确定工作过程1、支路故障判定窄i设故障在Fl处,使得支路④断线,这时变压器T3〜T6上电压为零,根据检测终端发回的报警信息可得故障矩阵S如下:& = [1 1 0 0 0 0 1 lf由矩阵A及S得到故障定位矩阵P如下:<formula>formula see original document page 9</formula>矩阵P中有第四列至第八列元素全为0,首先可判断出支路④到支路⑧线路电压都为零,其次列下标最小的是④,可以判断出支路④发生故障,支路©到支路⑧是受支路④故障影响电压为零。 Failure determination according to the present embodiment and embodiment 1 is determined during operation, the narrow branch failure determination Fl i provided at the fault, so that the branch ④ disconnection, when the transformer voltage is zero T3~T6, based on the detection of alarm information terminal back fault matrix S can be obtained as follows: & = [1 1 0 0 0 0 1 lf S and obtained by the fault location matrix A matrix P as follows: <formula> formula see original document page 9 </ formula> fourth column of the matrix P eighth column to all the elements 0, the first leg may be judged ④ to ⑧ branch line voltage are zero, followed by column index is the smallest ④, ④ can determine the fault branch, branch to branch © ⑧ ④ branch is subject to failure affecting voltage is zero. 1、 末端故障判定假设故障F2,使得支路⑥断线,变压器T4上电压为零,根据检测终端发回的报警信息可得故障矩阵:& = [1 1 1 0 1 1 1 lf由矩阵A及S得到故障定位矩阵P如下:①②③④⑤⑥⑦⑧⑨⑩<table>table see original document page 10</column></row> <table>矩阵P中有且只有一列元素全为0,可以判断出支路⑥发生故障, 1, the end F2 of the failure determination fault assumptions, such disconnection branch ⑥, T4 transformer voltage is zero, according to the detection terminal sends back failure alarm information available matrix: & = [1 1 1 0 1 1 1 lf by the matrix A and S obtain fault location matrix P as follows: ①②③④⑤⑥⑦⑧⑨⑩ <table> table see original document page 10 </ column> </ row> <table> matrix P has one and only one element are all 0, based on the branch ⑥ failure ,

Claims (1)

1. 一种配电网配电线路故障定位系统,其特征在于:包括若干个测量及通讯单元A、PC机及GSM终端C: 1)、测量及通讯单元由测量及通讯单元的中央处理器、GSM模块、测量及通讯单元的电源、信号采集模块(电压传感器)组成,其连接关系为:信号采集模块的输出端与测量及通讯单元的中央处理器的A/D端相连,GSM模块与测量及通讯单元的中央处理器的串口相连,测量及通讯单元的电源与测量及通讯单元的中央处理器、GSM模块、信号采集模块的电源端相连; 2)、PC机及GSM终端由GSM终端和PC机组成,GSM终端电路的输入端与PC机的串口连接; 3)、将每个测量及通讯单元的三个信号采集模块的输入端分别连接在被测的配电变压器三相的副端;由手持GPS定位仪B采集每个被测的配电变压器的地理信息,并将信息通过串口传递给PC机;每个测量及通讯单元的GSM模块与PC机 A distribution line distribution network fault location system comprising: a plurality of measurement and communication unit A, PC machine and GSM terminal C: 1), measured by the measuring means and communication means of the central processor and communication , GSM module power supply, measurement and communication unit, a signal acquisition module (voltage sensor), whose connection relationship is: a central processing unit connected to the output terminal of the communication means and the measuring signal acquisition module a / D terminal, and the GSM module measurement and a central processor connected to serial communication unit, a central processor connected to the power supply terminal of the measurement and the communication unit and communication unit of measurement, GSM module, a signal acquisition module; 2), PC machine and a GSM terminal of a GSM terminal and PC composition, GSM terminal input circuit and the PC serial port connection; 3), the input terminal of each of the three signal acquisition module measurement and communication units are connected to a three phase transformer under test sub end; collecting geographic information for each distribution transformer measured by a handheld GPS locator B, and transmitted to the PC through the serial machine; measurement and communication unit of each GSM module and PC GSM终端的GSM模块之间通过无线通讯的方式传递信息; 4)、故障的判定: a、在PC机上根据供电功率潮流方向及变压器与母线的连接关系建立主接线图,采集每个被测的配电变压器的地理信息,并将信息通过串口传递给PC机,赋予每个变压器地理信息;定义变压器的个数为m,相邻两个交点之间为一个支路,则有n个支路,在此基础上建立关联矩阵Am×n,Am×n中每个元素aij的定义为:当流入节点i的功率通过支路j,则aij=1,当流入节点i的功率与支路j没关联是,aij=0,其中0≤i≤m,0≤j≤n; b、由安装在每台配电变压器上的测量及通讯单元报告的配电变压器三相电压状态可形成每相的配网电压状态矩阵Sm×1=,定义si1为当第i台配电变压器A相电压正常时,si1=1;反之,当第i台配电变压器A相电压为0时si1=0; c、根据关联矩阵Am×n和状态矩阵Sm×1,形成故障点 GSM module between GSM terminal communicating information by wireless communication; 4), the fault determination: a, based on a PC power supply according to the flow direction and the transformer is connected to the main bus relation wiring diagram, each collection of test geographic information distribution transformer, and transmitted to the PC through the serial machine, geographic information assigned to each transformer; transformer defined number is m, is a point of intersection between two adjacent branches, the branches there are n , established on the basis of the correlation matrix Am × n, defined Am × n for each element aij: when power flows through the branch node i, j, then aij = 1, when power is flowing into the branch node i j association is not, aij = 0, where 0≤i≤m, 0≤j≤n; b, a three-phase distribution transformer voltage measurement and state reporting communication unit installed on each distribution transformer of each phase may be formed voltage distribution network state matrix Sm × 1 =, si1 defined as the i-th stage when the a-phase distribution transformer voltage is normal, si1 = 1; the other hand, when the first phase i a distribution transformer voltage is 0 si1 = 0; c, according to the associated state and the matrix Am × n matrix Sm × 1, forming the point of failure 位矩阵Pm×n,即取状态矩阵Sm×1中为0的元素的行下标,并令与其对应的关联矩阵A的那一行元素全部为0,即得故障点定位矩阵Pm×n; d、故障的确定: 当P=A,即矩阵P中没有全为0的列,说明没有报警短信发送到监控室,每条支路工作正常; 当矩阵P中有且只有一列全为0,则所列支路的末端线路断线; 当矩阵P中有多于一列全为0时,说明配网中间支路断线引起多个节点发生故障,为寻找故障支路的编号,比较全0列的列下标,其值最小的列下标即为故障支路编号; e、报警:在主接线图上显示故障点的位置。 Bit matrix Pm × n, i.e. taking state matrix Sm × 1 for element 0 of the row index, and to make its line that the associated element of the matrix A corresponding to the all zero, i.e., to obtain fault point location matrix Pm n ×; d failure determination: when P = a, i.e., the matrix P is not a full column 0, indicating no alarm messages sent to the control room, each branch work; matrix P when there is only one and all 0, then end of the line disconnection listed branches; matrix P when there is more than one column are all zero, indicating that the intermediate leg breakage caused by a plurality of distribution network node failure, the failure to find the number of branch, compare all 0 the column index, which is the minimum value of the faulty branch is the column index number; E, alarm: the display position of a fault point on a line diagram.
CN2008100697265A 2008-05-22 2008-05-22 Power distribution network distribution circuit fault location system CN101281229B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100697265A CN101281229B (en) 2008-05-22 2008-05-22 Power distribution network distribution circuit fault location system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008100697265A CN101281229B (en) 2008-05-22 2008-05-22 Power distribution network distribution circuit fault location system

Publications (2)

Publication Number Publication Date
CN101281229A true CN101281229A (en) 2008-10-08
CN101281229B CN101281229B (en) 2010-06-16

Family

ID=40013787

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008100697265A CN101281229B (en) 2008-05-22 2008-05-22 Power distribution network distribution circuit fault location system

Country Status (1)

Country Link
CN (1) CN101281229B (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101826756A (en) * 2010-04-30 2010-09-08 广州合立正通信息网络集成有限公司 System and method for realizing fault positioning of power distributing substation equipment
CN102135586A (en) * 2010-01-22 2011-07-27 西门子公司 Method and device for detecting abnormal event of voltage of power grid and power supply monitoring equipment
CN102540009A (en) * 2010-12-23 2012-07-04 上海蓝瑞电气有限公司 Fault locating system of power distribution network
CN102707194A (en) * 2012-05-17 2012-10-03 中国电力科学研究院 Power distribution network broken line fault location method
CN102707176A (en) * 2012-06-13 2012-10-03 中国电力科学研究院 Failure predication method for static security analysis of three-winding transformer
CN102055604B (en) * 2009-11-05 2012-12-05 中国移动通信集团山东有限公司 Fault location method and system thereof
CN102841293A (en) * 2011-05-30 2012-12-26 上海励谙电子技术有限公司 Fault positioning system for 10kV power distribution network circuit
CN102879712A (en) * 2012-10-22 2013-01-16 重庆市电力公司长寿供电局 System and method for positioning power distribution network terminal failures
CN103245881A (en) * 2013-04-22 2013-08-14 国家电网公司 Power distribution network fault analyzing method and device based on tidal current distribution characteristics
CN103268696A (en) * 2013-05-20 2013-08-28 国家电网公司 Multifunctional data acquisition method applied to power distribution overhaul
CN103529360A (en) * 2013-10-15 2014-01-22 上海交通大学 Power failure indication device supporting geological information
CN103995215A (en) * 2014-05-08 2014-08-20 国家电网公司 Intelligent electrical-network fault diagnosis method based on multilevel feedback adjustment
CN104483601A (en) * 2014-12-24 2015-04-01 广西大学 Power distribution network fault location method based on fault indicators
CN104755946A (en) * 2012-09-15 2015-07-01 沙特阿拉伯石油公司 Gsm/gprs system to detect and locate high impedance faults on medium voltage distribution networks in high resistivity areas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1112589C (en) * 1999-11-20 2003-06-25 深圳市中兴通讯股份有限公司 Method for determining position of failure in electric distribution network
CN2932404Y (en) * 2006-01-18 2007-08-08 张百军 Distribution network failure automatic positioning system device

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102055604B (en) * 2009-11-05 2012-12-05 中国移动通信集团山东有限公司 Fault location method and system thereof
CN102135586A (en) * 2010-01-22 2011-07-27 西门子公司 Method and device for detecting abnormal event of voltage of power grid and power supply monitoring equipment
CN102135586B (en) * 2010-01-22 2014-08-13 西门子公司 Method and device for detecting abnormal event of voltage of power grid and power supply monitoring equipment
CN101826756A (en) * 2010-04-30 2010-09-08 广州合立正通信息网络集成有限公司 System and method for realizing fault positioning of power distributing substation equipment
CN102540009A (en) * 2010-12-23 2012-07-04 上海蓝瑞电气有限公司 Fault locating system of power distribution network
CN102841293A (en) * 2011-05-30 2012-12-26 上海励谙电子技术有限公司 Fault positioning system for 10kV power distribution network circuit
CN102841293B (en) * 2011-05-30 2015-04-01 上海励谙电子技术有限公司 Fault positioning system for 10kV power distribution network circuit
CN102707194A (en) * 2012-05-17 2012-10-03 中国电力科学研究院 Power distribution network broken line fault location method
CN102707194B (en) * 2012-05-17 2015-03-25 中国电力科学研究院 Power distribution network broken line fault location method
CN102707176B (en) * 2012-06-13 2014-09-10 中国电力科学研究院 Failure predication method for static security analysis of three-winding transformer
CN102707176A (en) * 2012-06-13 2012-10-03 中国电力科学研究院 Failure predication method for static security analysis of three-winding transformer
CN104755946A (en) * 2012-09-15 2015-07-01 沙特阿拉伯石油公司 Gsm/gprs system to detect and locate high impedance faults on medium voltage distribution networks in high resistivity areas
CN104755946B (en) * 2012-09-15 2017-06-06 沙特阿拉伯石油公司 For the GSM/GPRS systems of the online high impedance fault of the medium-voltage distribution in the area for detecting and being positioned at high resistivity
CN102879712A (en) * 2012-10-22 2013-01-16 重庆市电力公司长寿供电局 System and method for positioning power distribution network terminal failures
CN103245881A (en) * 2013-04-22 2013-08-14 国家电网公司 Power distribution network fault analyzing method and device based on tidal current distribution characteristics
CN103245881B (en) * 2013-04-22 2015-03-04 国家电网公司 Power distribution network fault analyzing method and device based on tidal current distribution characteristics
CN103268696A (en) * 2013-05-20 2013-08-28 国家电网公司 Multifunctional data acquisition method applied to power distribution overhaul
CN103529360A (en) * 2013-10-15 2014-01-22 上海交通大学 Power failure indication device supporting geological information
CN103995215A (en) * 2014-05-08 2014-08-20 国家电网公司 Intelligent electrical-network fault diagnosis method based on multilevel feedback adjustment
CN103995215B (en) * 2014-05-08 2016-07-13 国家电网公司 A kind of smart power grid fault diagnostic method based on multi-level feedback adjustment
CN104483601A (en) * 2014-12-24 2015-04-01 广西大学 Power distribution network fault location method based on fault indicators
CN104483601B (en) * 2014-12-24 2017-07-28 广西大学 A kind of electrical power distribution network fault location method based on fault detector

Also Published As

Publication number Publication date
CN101281229B (en) 2010-06-16

Similar Documents

Publication Publication Date Title
Memon et al. A critical review of AC Microgrid protection issues and available solutions
CN102830255B (en) A kind of intelligent electric energy meter with electricity consumption malfunction monitoring defencive function
US10222409B2 (en) Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network
CA2787580C (en) Systems, methods, and apparatus for locating faults on an electrical distribution network
Liao Fault location for single-circuit line based on bus-impedance matrix utilizing voltage measurements
CN103760454B (en) MOV lightning arrester leakance detection device, long distance control system and method
Glavic et al. See it fast to keep calm: Real-time voltage control under stressed conditions
CN102208801B (en) Operation method for safely applying line protection device to wind power station
CN1909326B (en) Low-voltage intelligent anti-theft measuring pocket
CN102590700B (en) Based on pole line fast fault locating method and the device of time synchronized
WO2014090018A1 (en) Iec61850 standard-based intelligent power distribution terminal
CN102510048B (en) Anti-override trip protection method
CN104374964A (en) Electric energy meter capable of measuring residual currents
CN103605015B (en) High-precision electric parameter measurement dry-type reactor on-Line Monitor Device and method
CN104237645B (en) A kind of transformer station direct current system state of insulation on-line monitoring system and method
CN101571563A (en) Integrative electric energy quality monitoring terminal
CN102981099A (en) Location method for single-phase earth fault of power distribution network based on genetic algorithm and location device
US9874593B2 (en) Decision support system for outage management and automated crew dispatch
CN103852744A (en) Distributed online monitoring system and method for electric energy metering device
CN104483601B (en) A kind of electrical power distribution network fault location method based on fault detector
CN101738565B (en) Adaptive fault indicator
CN102914726A (en) Fault positioning method for common-tower double-circuit line
CN102510051B (en) Method for identifying failure of sampling value data of intelligent substation based on waveform coefficient equation
CN104076243B (en) A kind of small current neutral grounding one-phase earthing failure in electric distribution network detection indicating means and equipment
CN101216503A (en) Hierarchical type electricity anti-theft system and method

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee