CN205317885U

CN205317885U - Distributing type transmission line fault location system

Info

Publication number: CN205317885U
Application number: CN201620049552.6U
Authority: CN
Inventors: 李阳阳; 杨国光
Original assignee: Wuhan Zhiwang Xingdian Technology Development Co Ltd
Current assignee: Wuhan Zhiwang Xingdian Technology Development Co Ltd
Priority date: 2016-01-19
Filing date: 2016-01-19
Publication date: 2016-06-15
Anticipated expiration: 2026-01-19

Abstract

The utility model provides a distributing type transmission line fault location system, this system installs a plurality of fault detection device (1) on transmission line and is used for receive real -time and the host system of analysis processes fault detection information (2) including the distributing type, fault detection device (1) is including power module (101), current data collection module (102) and a wireless communication module (103), power module (101) are followed power line and are got the electricity, for the power supply of fault detection device, main installation a plurality of detection device in power line, the electric current travelling wave was propagated on transmission line when utilizing the circuit to take place earth fault characteristic, each check point was monitored the time that the trouble travelling wave reaches the device, then calculated through the backstage, found out line fault point position, can eliminate that line parameter and travelling wave wave speed are unknown, the great influence of decay in the travelling wave transmission course, did not need GPS synchronous, not only the cost is reduced but also improved the precision of fixing a position.

Description

A kind of distributed power transmission line fault location system

Technical field

This utility model relates to transmission line of electricity operation monitoring technical field, particularly relates to a kind of distributed power transmission line fault location system.

Background technology

Along with the propelling that intelligent grid is built, ultra-high/extra-high voltage long-distance and large-capacity power transmission number of, lines is continuously increased, distribution network load density improves constantly, power circuit is as the large artery trunks of Operation of Electric Systems, its safe and reliable operation becomes the most important thing of power system transmission and disttrbution operational management link, it is to ensure that the key point of supply of electric power safety and reliability, is the important foundation realizing China's development intelligent grid original intention.

Feeder line fault localization method now mainly has two classes: a class is impedance method, and a class is traveling wave method. Impedance method owing to the isoparametric impact of transition resistance that earth fault exists can not be eliminated, fault location precision in this approach low and be not suitable for long distance powedr transmission. Traveling wave method is the characteristic monitoring trouble point utilizing traveling wave to propagate with certain speed on transmission line of electricity, and it is not by the impact of line parameter circuit value, it is possible to achieve accurate fault location. But currently proposed travelling wave ranging method is due to the uncertainty of traveling wave speed and needs GPS lock in time, all there is the problem that precision is inaccurate or relatively costly. The additionally traveling wave positioning mode of single-ended side, this pattern requires to allow for judging out of order initial traveling wave accurately, with again pass by trouble point reflection after traveling wave, bigger owing to traveling wave process decaying so that the identification of trouble point reflected traveling wave wave head becomes complicated consequently, it is possible to cause positioning unsuccessfully.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model proposes a kind of distributed power transmission line fault location system, mainly several detecting devices are installed in power circuit, the characteristic that when utilizing circuit generation earth fault, current traveling wave is propagated on transmission line of electricity, fault traveling wave is reached the time of device and is monitored by each test point, then pass through hind computation, find out line fault point position, line parameter circuit value can be eliminated and traveling wave speed is unknown, decay in traveling wave process large effect, need not synchronize by GPS, not only reduce cost but also improve the precision of location.

This utility model be the technical scheme is that by the above-mentioned technical problem of solution

A kind of distributed power transmission line fault location system, including the distributed multiple failure detectors being installed on transmission line of electricity with for real-time reception the main control module analyzing and processing fault detection information; Described failure detector includes power module, current data acquisition module and the first wireless communication module, described power module is from power taking power circuit, power for failure detector, described current data acquisition module is for gathering the current state information on transmission line of electricity, described first wireless communication module, for realizing the point-to-point communication of failure detector and main control module, transmits transmission line malfunction information; Described main control module includes the second wireless communication module, CPU processing unit and GPRS/GSM communication module, described CPU processing unit analyzes and processes the fault message that the second wireless communication module receives, and by GPRS/GSM communication module, result is sent to long-range master station.

As preferably, described current data acquisition module adopts from integration and outer integral form Rogowski coil, is respectively intended to detection fault high-frequency traveling wave current and normal state current.

As preferably, described main control module carries out real-time Communication for Power by the second wireless communication module and multiple failure detectors, realize the control of whole system, including conductor temperature and the collection of current data, the mensuration of traveling wave time of advent, the calculating of trouble point distance, Monitoring Data collect and with the communicating of backstage.

The beneficial effects of the utility model are:

1, distributed system is adopted effectively to eliminate decay large effect in line parameter circuit value and traveling wave speed the unknown, traveling wave process, it is not necessary to GPS synchronizes, and not only reduces cost but also improve the precision of location.

2, the detection information of each detecting device of main control unit real-time reception, fault message is analyzed in integrated treatment, and fault location precision is higher, and system robustness is high.

Accompanying drawing explanation

Fig. 1, Fig. 2 are this utility model system structure schematic diagrams;

Shown in figure: 1. failure detector, 2. main control module, 101. power modules, 102. current data acquisition modules, 103. first wireless communication modules, 201. second wireless communication modules, 202.CPU processing unit, 203.GPRS/GSM communication module

Detailed description of the invention

Below in conjunction with drawings and Examples, this utility model is further illustrated.

As shown in Figure 1 and Figure 2, a kind of distributed power transmission line fault location system that this utility model provides, including the distributed multiple failure detectors 1 being installed on transmission line of electricity with for real-time reception the main control module 2 analyzing and processing fault detection information, described failure detector 1 includes power module 101, current data acquisition module 102 and the first wireless communication module 103, described power module 101 is from power taking power circuit, power for failure detector 1, described current data acquisition module 102 adopts from integration and outer integral form Rogowski coil, it is respectively intended to detection fault high-frequency traveling wave current and normal state current, described first wireless communication module 103, for realizing the point-to-point communication of failure detector 1 and main control module 2, transmits transmission line malfunction information, described main control module 2 includes the second wireless communication module 201, CPU processing unit 202 and GPRS/GSM communication module 203, described CPU processing unit analyzes and processes the fault message that the second wireless communication module receives, real-time Communication for Power is carried out by the second wireless communication module and multiple failure detectors, realize the control of whole system, collection including conductor temperature and current data, the mensuration of traveling wave time of advent, the calculating of trouble point distance, the collecting and be sent to long-range master station by GPRS/GSM communication module with the communication on backstage and by result of Monitoring Data.

The part do not set forth in description is prior art or known general knowledge. The present embodiment is merely to illustrate this utility model, rather than limits scope of the present utility model, and the amendment such as the equivalent replacement that those skilled in the art make for this utility model is all deemed to fall within this utility model right claim institute protection domain.

Claims

1. a distributed power transmission line fault location system, it is characterised in that: this system includes the distributed multiple failure detectors (1) being installed on transmission line of electricity and is used for real-time reception and analyzes and processes the main control module (2) of fault detection information; Described failure detector (1) includes power module (101), current data acquisition module (102) and the first wireless communication module (103), described power module (101) is from power taking power circuit, power for failure detector, described current data acquisition module (102) is for gathering the current state information on transmission line of electricity, described first wireless communication module (103) is used for the point-to-point communication realizing failure detector (1) with main control module (2), transmits transmission line malfunction information; Described main control module (2) includes the second wireless communication module (201), CPU processing unit (202) and GPRS/GSM communication module (203), described CPU processing unit (202) analyzes and processes the fault message that the second wireless communication module (201) receives, and by GPRS/GSM communication module (203), result is sent to long-range master station.

2. a kind of distributed power transmission line fault location system according to claim 1, it is characterized in that: described current data acquisition module (102) adopts from integration and outer integral form Rogowski coil, be respectively intended to detection fault high-frequency traveling wave current and normal state current.

3. a kind of distributed power transmission line fault location system according to claim 1, it is characterized in that: described main control module carries out real-time Communication for Power by the second wireless communication module (201) and multiple failure detectors (1), realize the control of whole system, including conductor temperature and the collection of current data, the mensuration of traveling wave time of advent, the calculating of trouble point distance, Monitoring Data collect and with the communicating of backstage.