CN104267316A - Medium voltage transmission line malfunction positioning system - Google Patents
Medium voltage transmission line malfunction positioning system Download PDFInfo
- Publication number
- CN104267316A CN104267316A CN201410553693.7A CN201410553693A CN104267316A CN 104267316 A CN104267316 A CN 104267316A CN 201410553693 A CN201410553693 A CN 201410553693A CN 104267316 A CN104267316 A CN 104267316A
- Authority
- CN
- China
- Prior art keywords
- power
- transmission line
- current
- mcu
- power carrier
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a medium voltage transmission line malfunction positioning system which comprises a power transmission line, a PC arranged on a transformer substation terminal and a plurality of malfunction positioning devices. Each malfunction positioning device comprises a current detection module and a power carrier wave communication module, wherein the current detection module comprises a first current transformer, a current-to-voltage converter and an AD conversion circuit, and the power carrier wave communication module comprises a MCU, a data storage unit, a power circuit, a power carrier wave modulator-demodulator and a coupler. According to the medium voltage transmission line malfunction positioning system, the power carrier wave technology is utilized for transmitting current detection information, an existing medium voltage transmission line is utilized, rewiring is not needed, the influences of information obstacles on the signal quality in wireless transmission are avoided, and the problems about the cost, safety and the transmission distance brought by wireless information transmission are greatly reduced and solved.
Description
Technical field
The present invention relates to technical field of power systems, be specially pressure transmission line fault location system in one.
Background technology
Along with the development of electric system, power system transmission line electric pressure and transmission capacity are all progressively improving, and the accurate location technology of fault of transmission line of electricity is also more and more by people are paid attention to.Fault is accurately located and work of electric power system personnel can be helped to find abort situation accurately and rapidly, and this, for repairing circuit in time, recovering reliable power supply, ensures that the safety and stability of electric system and economical operation have very important effect.The accurate location how realizing overhead transmission line trouble spot is quickly and accurately an important subject of electric system.
The transmission of current fault information in electric power system mainly utilizes wireless technology, as Zigbee, GPRS technology etc.But, the transmission range of radio communication or coverage affect by multifactorial, except the sensitivity of the gain of the emissive power of signal source, antenna, receiving equipment, frequency, free space attenuation, noise, also has the impact of site environment, such as buildings, the blocking of trees and wall, human body, weather etc. to electromagnetic decay, the simultaneously problem such as the safety that exists of radio communication and expense.
Summary of the invention
The object of the present invention is to provide for the problems referred to above and a kind ofly realize that the safety economy more of communication between shaft tower, transmission range are farther based on PLC technology, cost lower in pressure transmission line fault location system.Technical scheme is as follows: pressure transmission line fault location system in one, comprise power transmission lines, be arranged on the PC of transformer station's terminal and several fault locators, described fault locator comprises current detection module and power carrier communication module, and described current detection module comprises the first current transformer, current-to-voltage convertor, A/D convertor circuit; Described power carrier communication module comprises MCU, data-carrier store, power circuit, power carrier modem and coupling mechanism; Described first current transformer primary side is power transmission lines, and secondary side connects the input end of current-to-voltage convertor, and the output terminal of current-to-voltage convertor connects MCU by A/D convertor circuit; Described MCU is connection data storer and power circuit also, and described MCU is also by the power carrier modem that communication serial port connects, and described power carrier modem also connects power transmission lines by coupling mechanism.
Further: above-mentioned fault locator is arranged on each the phase power transmission lines between every two tower bars.
Further: above-mentioned power circuit comprises the second current transformer, second current transformer primary side is power transmission lines, secondary side two ends connect the ac input end of the full-wave rectifying circuit be made up of four commutation diodes, the DC output end of full-wave rectifying circuit is connected in parallel stabilivolt, in parallel with stabilivolt after isolating diode is connected with capacitances in series.
Further: above-mentioned MCU is AT89LS52 chip.
Further: the preferred described controller of above-mentioned power carrier modem adopts EV8000 chip.
The present invention is by PLC technology transmission current Detection Information, utilize existing middle pressure transmission line, without the need to rewiring, to overcome in wireless transmission information obstacle thing to the impact of signal quality simultaneously, and substantially reduce and solve the problem such as expense, safety, transmission range that transmitting information wirelessly brings.
Accompanying drawing explanation
Fig. 1 is middle pressure transmission line fault location system structured flowchart.
Fig. 2 is middle pressure transmission line fault location system principle of work schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, pressure transmission line fault location system in one, comprise power transmission lines, be arranged on the PC of transformer station's terminal and several fault locators, described fault locator comprises current detection module and power carrier communication module, and described current detection module comprises the first current transformer, current-to-voltage convertor, A/D convertor circuit; Described power carrier communication module comprises MCU, data-carrier store, power circuit, power carrier modem and coupling mechanism; Described first current transformer primary side is power transmission lines, and secondary side connects the input end of current-to-voltage convertor, and the output terminal of current-to-voltage convertor connects MCU by A/D convertor circuit; Described MCU is connection data storer and power circuit also, and described MCU is also by the power carrier modem that communication serial port connects, and described power carrier modem also connects power transmission lines by coupling mechanism.
Wherein above-mentioned MCU is AT89LS52 chip, and the preferred described controller of above-mentioned power carrier modem adopts EV8000 chip.
Wherein transmission line of electricity primary side current is sensed secondary side through the second current transformer by power circuit, by 4 commutation diode full-wave rectifications, stabilivolt voltage stabilizing to 4V, by isolating diode to capacitor charging, form 3.3V power supply, in order to provide power supply to fault locator.
The transmission pressure of middle pressure transmission line is fixedly connected with shaft tower through insulator.Article one, middle pressure transmission line supports transmission pressure by many shaft towers and forms.In general, the spacing of the shaft tower of pressure transmission line is approximately between 100-500m.As long as can accurately localize short circuits fault occur between certain 2 shaft tower, just trouble spot can be found fast.Fault locator presses the feature of power transmission line in combining, adopt the method for power-line carrier communication to realize localization of fault.
Each phase electric power transmission line between every two shaft towers all arranges fault locator, the current detecting information that received current detection module is sent, send to a upper fault locator of next-door neighbour, or the current detecting information that the next fault locator receiving next-door neighbour is sent.As shown in Figure 2, whole middle pressure transmission line has n shaft tower, and 7 shaft towers got wherein are that example is described, and 1,2,3,4,5,6,7 fault locators that correspond to shaft tower that are numbered of shaft tower are numbered M1, M2, M3, M4, M5, M6, M7.Such as fault locator M7, first current transformer detects the current information between shaft tower 6 and shaft tower 7, and convert information of voltage by current-to-voltage convertor to by current information, through A/D convertor circuit, voltage analog signal is converted to voltage digital signal, compare with the preset voltage value in MCU, when testing result is pre-seting in scope, namely when non-fault occurs, MCU produces normal job information code by software, and by normal job information code mod sum label M7 through communication serial port, and modulated by power carrier modem, described data message to be coupled on power transmission lines finally by coupling mechanism and to transfer to fault locator M6, after fault locator M6 receives data, first by coupling mechanism to the information coupling on line of electric force, by power carrier modem, demodulation is carried out to information again, finally be stored in data-carrier store, in like manner, fault locator M6 between shaft tower 5 and shaft tower 6, detect the current information between shaft tower 5 and shaft tower 6, when this section of normal non-fault produces, by the data reading that MCU will store in data-carrier store, and produce normal information code, by the normal job information code of the numbering of M6 and M6, and the normal job information code of the numbering of M7 and M7 is all sent to M5, the like, until after being sent to transformer station, M1 sends to transformer station's terminal PC, whether can be checked by PC, break down information.
When there being fault to occur, such as: when there is short trouble between shaft tower 5 and shaft tower 6, the first Current Transformer Secondary side electric current in fault locator M6 between shaft tower 5 and shaft tower 6 becomes large thereupon, the magnitude of voltage that then current-to-voltage convertor exports becomes large, compare with the preset voltage value in MCU after converting digital signal to, exceed the scope of preset value, MCU produces failure message code by software, and failure message code mod sum label M6 is sent to M5, now, M6, M5, M4 ... M1 all produces failure message code, can check which two shaft tower is fault occur between by PC, and send staff to keep in repair, fix a breakdown in time.
Claims (5)
1. a pressure transmission line fault location system in, comprises power transmission lines, is arranged on the PC of transformer station's terminal and several fault locators; Described fault locator comprises current detection module and power carrier communication module, it is characterized in that, described current detection module comprises the first current transformer, current-to-voltage convertor, A/D convertor circuit; Described power carrier communication module comprises MCU, data-carrier store, power circuit, power carrier modem and coupling mechanism; Described first current transformer primary side is power transmission lines, and secondary side connects the input end of current-to-voltage convertor, and the output terminal of current-to-voltage convertor connects MCU by A/D convertor circuit; Described MCU is connection data storer and power circuit also, and described MCU is also by the power carrier modem that communication serial port connects, and described power carrier modem also connects power transmission lines by coupling mechanism.
2. middle pressure transmission line fault location system according to claim 1, is characterized in that, described fault locator is arranged on each the phase power transmission lines between every two tower bars.
3. middle pressure transmission line fault location system according to claim 1, it is characterized in that, described power circuit comprises the second current transformer, second current transformer primary side is power transmission lines, secondary side two ends connect the ac input end of the full-wave rectifying circuit be made up of four commutation diodes, the DC output end of full-wave rectifying circuit is connected in parallel stabilivolt, in parallel with stabilivolt after isolating diode is connected with capacitances in series.
4. middle pressure transmission line fault location system according to claim 1, is characterized in that, described MCU is AT89LS52 chip.
5. middle pressure transmission line fault location system according to claim 1, is characterized in that, the preferred described controller of described power carrier modem is EV8000 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553693.7A CN104267316A (en) | 2014-10-17 | 2014-10-17 | Medium voltage transmission line malfunction positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553693.7A CN104267316A (en) | 2014-10-17 | 2014-10-17 | Medium voltage transmission line malfunction positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104267316A true CN104267316A (en) | 2015-01-07 |
Family
ID=52158856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410553693.7A Pending CN104267316A (en) | 2014-10-17 | 2014-10-17 | Medium voltage transmission line malfunction positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104267316A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795818A (en) * | 2015-05-07 | 2015-07-22 | 山东奥联信息科技有限公司 | Remote power-feeding power generator and remote power-feeding fault locating method |
| CN105425110A (en) * | 2015-12-14 | 2016-03-23 | 许昌许继昌南通信设备有限公司 | Quick override trip fault positioning method based on power line carrier technology |
| CN108710063A (en) * | 2018-07-09 | 2018-10-26 | 国网江西省电力有限公司鹰潭供电分公司 | A kind of power circuit detecting system and method based on electric line carrier communication technology |
| CN110854863A (en) * | 2019-10-23 | 2020-02-28 | 清远市昭元电力科技有限公司 | Power control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142479A (en) * | 1983-02-02 | 1984-08-15 | Furukawa Electric Co Ltd:The | Transmission line monitoring method |
| CN1707277A (en) * | 2004-06-09 | 2005-12-14 | 上海久隆电力科技有限公司 | Distribution line fault monitoring system |
| CN101799510A (en) * | 2009-02-11 | 2010-08-11 | 上海久隆电力科技有限公司 | Automated device for WH power distribution fault diagnosis of trunk transformer |
| CN101846718A (en) * | 2010-06-22 | 2010-09-29 | 山东电力研究院 | Single-phase earth fault location system for distribution network of power system and method thereof |
| CN201812025U (en) * | 2010-09-20 | 2011-04-27 | 中铁十二局集团有限公司 | Failure detection device for power transmission line |
| CN102313856A (en) * | 2010-06-30 | 2012-01-11 | 北京泰优美科技有限责任公司 | Intelligent 10kV power line state sensor |
-
2014
- 2014-10-17 CN CN201410553693.7A patent/CN104267316A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142479A (en) * | 1983-02-02 | 1984-08-15 | Furukawa Electric Co Ltd:The | Transmission line monitoring method |
| CN1707277A (en) * | 2004-06-09 | 2005-12-14 | 上海久隆电力科技有限公司 | Distribution line fault monitoring system |
| CN101799510A (en) * | 2009-02-11 | 2010-08-11 | 上海久隆电力科技有限公司 | Automated device for WH power distribution fault diagnosis of trunk transformer |
| CN101846718A (en) * | 2010-06-22 | 2010-09-29 | 山东电力研究院 | Single-phase earth fault location system for distribution network of power system and method thereof |
| CN102313856A (en) * | 2010-06-30 | 2012-01-11 | 北京泰优美科技有限责任公司 | Intelligent 10kV power line state sensor |
| CN201812025U (en) * | 2010-09-20 | 2011-04-27 | 中铁十二局集团有限公司 | Failure detection device for power transmission line |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795818A (en) * | 2015-05-07 | 2015-07-22 | 山东奥联信息科技有限公司 | Remote power-feeding power generator and remote power-feeding fault locating method |
| CN104795818B (en) * | 2015-05-07 | 2017-10-20 | 王吉武 | The method of remote power-feeding power source generator and remote power-feeding fault location |
| CN105425110A (en) * | 2015-12-14 | 2016-03-23 | 许昌许继昌南通信设备有限公司 | Quick override trip fault positioning method based on power line carrier technology |
| CN108710063A (en) * | 2018-07-09 | 2018-10-26 | 国网江西省电力有限公司鹰潭供电分公司 | A kind of power circuit detecting system and method based on electric line carrier communication technology |
| CN110854863A (en) * | 2019-10-23 | 2020-02-28 | 清远市昭元电力科技有限公司 | Power control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104267316A (en) | Medium voltage transmission line malfunction positioning system | |
| CN202693649U (en) | Electricity theft preventing system | |
| CN101871990A (en) | Fault positioning system of overhead power transmission line | |
| CN104865499A (en) | Super-high voltage direct-current power transmission line region internal and external fault identification method | |
| CN103698643A (en) | Low-voltage power distribution area identification method and power distribution area instrument | |
| CN203178354U (en) | Three-phase AC electronic quantities detection circuit suitable for one-chip microcomputer | |
| CN105931443A (en) | Method for collecting data of water meter, ammeter, gas meter and heat meter together | |
| CN104377841A (en) | Three-phase wireless power supply system load position detection and control method | |
| CN110739774A (en) | Internet of things system of low-voltage distribution network | |
| CN103969551A (en) | Rural power grid three-level protection aftercurrent failure rapid positioning device and method | |
| CN105044448B (en) | Instantaneous power monitoring system for hvdc system | |
| CN202794361U (en) | District automatic identification tester | |
| CN101718817A (en) | Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way | |
| CN101881803B (en) | Fault localization method of overhead transmission line | |
| CN103472356A (en) | Cable type fault detector | |
| CN218848255U (en) | Single-phase charging pile phase line detection system | |
| CN202041611U (en) | Fault indicator for ground fault automatic locating device of power transmission line | |
| CN104391223A (en) | Single-phase fault judging method for small-current grounding system of overhead line | |
| CN105931447A (en) | Downlink communication system of low-voltage power meter reading system and meter reading method | |
| CN108320426B (en) | Power load circuit and equipment anti-theft linkage device and use method thereof | |
| CN104880646A (en) | Cable fault detector | |
| CN103318225B (en) | For the protection box of railway phase detecting track circuit | |
| CN202041612U (en) | Automatic locating device for earth faults of electricity transmission lines | |
| CN202018729U (en) | Communication terminal of ground fault automatic positioning device for transmission line | |
| CN205210233U (en) | Distribution network phase to earth fault detects and positioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |