CN109061395B - Quick fault location appearance of distribution network - Google Patents
Quick fault location appearance of distribution network Download PDFInfo
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- CN109061395B CN109061395B CN201811081129.4A CN201811081129A CN109061395B CN 109061395 B CN109061395 B CN 109061395B CN 201811081129 A CN201811081129 A CN 201811081129A CN 109061395 B CN109061395 B CN 109061395B
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- module
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- distribution network
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a rapid positioning fault instrument for a power distribution network, which comprises a control module and a power supply module, wherein the output end of the power supply module is connected with the input end of the control module, the control module is connected with a monitoring module and a signal generating module in a bidirectional manner through signal wires, and the monitoring module is respectively connected with branch lines L of the power distribution network 1 、L 2 、L N The signal generating module is connected with the branch line L of the power distribution network respectively 1 、L 2 、L N The ground wire PE is connected, the output end of the control module is connected with the input end of the communication module, the input end of the communication module is connected with the time synchronization module through a signal wire, the output end of the communication module is connected with the input end of the information receiving module through a wireless signal, the output end of the information receiving module is connected with the input end of the data storage module, and the output end of the data storage module is connected with the input end of the monitoring master station module. The invention solves the defects of the prior art that the distribution network has a plurality of branch lines and the fault searching is inconvenient.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a rapid fault positioning instrument for a power distribution network.
Background
At present, the power departments in China widely adopt electromechanical integrated fault indicators on a 10kV power distribution network, and after faults occur, the fault indicators of line inspection workers in line searching actions are sent out to determine the fault positions. Because the distribution network branch lines are many, the fault searching is very inconvenient, and a great deal of manpower, material resources and time are often consumed.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, a plurality of branch lines of a power distribution network exist and the fault finding is inconvenient, and provides a rapid fault locating instrument for the power distribution network.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a quick location trouble appearance of distribution network, includes control module and power module, power module's output is connected with control module's input, control module has monitoring module and signal generation module through signal line two-way connection, monitoring module respectively with distribution network branch line L 1 、L 2 、L N The signal generating modules are respectively connected with the branch lines L of the power distribution network 1 、L 2 、L N The ground wire PE is connected, the output end of the control module is connected with the input end of the communication module, the input end of the communication module is connected with the time synchronization module through a signal wire, the output end of the communication module is connected with the input end of the information receiving module through a wireless signal, the output end of the information receiving module is connected with the input end of the data storage module, and the output end of the data storage module is connected with the input end of the monitoring master station module.
Further, the signal generation module comprises a signal source, a power amplifier, a step-up transformer and a signal coupler; the signal source outputs an array original signal lattice by a singlechip, the array original signal lattice is analyzed into continuous signals by a DA circuit, and the signals output by the signal source are coupled to a branch L of a power distribution network through a power amplifier, a step-up transformer and a signal coupler 1 、L 2 、L N And (3) upper part.
Further, the communication module comprises a satellite communication module and a GPRS module, the satellite communication module is connected with the input end of the satellite antenna, the output end of the satellite antenna is connected with the input end of the information receiving module, the output end of the GPRS module is connected with the input end of the 3G antenna, and the output end of the 3G antenna is connected with the input end of the information receiving module.
Further, the output end of the control module is connected with the input end of the indicator light module.
The invention has the beneficial effects that: through setting up monitoring module, signal generation module and control module, when the distribution network breaks down, signal generation module starts and produces locating signal, pours into the distribution network into, because the electric wire netting breaks down, monitoring module can monitor the test current that produces on a certain branch, can judge this branch and break down, needn't check by branch outage, has improved trouble-shooting efficiency, has guaranteed the continuity of distribution network power supply.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a signal generation module;
fig. 3 is a schematic structural diagram of the control module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, a rapid fault positioning device for a power distribution network comprises a control module and a power supply module, wherein the output end of the power supply module is connected with the input end of the control module, a monitoring module and a signal generating module are connected to the control module in a bidirectional manner through signal lines, and the monitoring module is respectively connected with branch lines L of the power distribution network 1 、L 2 、L N The signal generating module is connected with the branch line L of the power distribution network respectively 1 、L 2 、L N The output end of the control module is connected with the input end of the communication module, the input end of the communication module is connected with the time synchronization module through a signal wire, the output end of the communication module is connected with the input end of the information receiving module through a wireless signal, and the output end of the information receiving module is connected with the data storage moduleThe output end of the data storage module is connected with the input end of the monitoring master station module.
The monitoring master station module is a PC. The communication module comprises a satellite communication module and a GPRS module, the satellite communication module is connected with the input end of the satellite antenna, the output end of the satellite antenna is connected with the input end of the information receiving module, the output end of the GPRS module is connected with the input end of the 3G antenna, and the output end of the 3G antenna is connected with the input end of the information receiving module. The output end of the control module is connected with the input end of the indicator light module, when the power distribution network rapid positioning fault instrument is in actual use, the signal generation module is electrified to start working, the control module monitors the power distribution network in real time through the monitoring module, and test signals generated by the signal generation module are loaded to L 1 -PE、L 2 -PE、L N And when the power distribution network breaks down, the fault branch can be used as a smaller resistor to connect the broken line of the power distribution network with the ground to form a current loop, so that a test signal generates a test current on the fault branch, and the monitoring module can judge the fault branch after monitoring the test current, thereby realizing the function of quick fault positioning, avoiding the need of checking the power failure of the branch, improving the fault searching efficiency and ensuring the power supply continuity of the power distribution network.
The signal generation module comprises a signal source, a power amplifier, a step-up transformer and a signal coupler. As shown in FIG. 2, the signal source generates a low-frequency signal of 0.1Hz, which is amplified by the power amplifier, boosted by the booster transformer, and coupled by the coupler to the L 1、 L 2、 L N On the circuit, the signal source adopts a singlechip to output a 0.1Hz array source signal lattice, and generates a continuous signal with the frequency of 0.1Hz through analysis of a DA circuit, wherein the signal source consists of the singlechip and the DA circuit, and the singlechip adopts M430HT and is provided by TI company in the United states; the power amplifier amplifies the 0.1Hz low frequency signal generated by the signal source, the power amplifier generates the low frequency signal with 100V voltage and 5A current after amplifying, the apparent power is 500W, the power amplifier is the same as the audio signal amplifier, that is, the signal amplified power of the singlechip after DA is sent to the step-up transformer for step-upThe voltage transformer boosts the 0.1HZ low-frequency signals of 100V and 5A to 10KV and is coupled to a fault line L through a coupler 1 、L 2 、L N And (3) upper part.
The control module receives the low-frequency 0.1Hz signal sent by the signal generating module and the fault signal received by the monitoring module, and the fault signal is removed by the 0.1Hz signal, and the control module comprises a main processing unit, a monitoring signal receiving unit, a signal generator receiving unit and a fault information sending unit, as shown in figure 3. The monitoring signal receiving unit sends real-time signals monitored by the monitoring module to the main processing unit, the signal generator receiving unit sends the signals of 0.1Hz received by the monitoring module to the main processing unit, the main processing unit processes, filters and does not calculate the signals of non-0.1 Hz by taking the synchronous signals of 0.1Hz as judgment basis, the accuracy is greatly improved, the signals are not interfered by other interference signals, and the signals judged by the main processing unit are sent to the communication module through the fault information sending unit.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. The utility model provides a distribution network quick positioning trouble appearance which characterized in that: the power distribution network monitoring system comprises a control module and a power supply module, wherein the output end of the power supply module is connected with the input end of the control module, the control module is connected with a monitoring module and a signal generating module in a bidirectional manner through signal wires, and the monitoring module is respectively connected with a branch L of a power distribution network 1 、L 2 、L N The signal generating modules are respectively connected with the branch lines L of the power distribution network 1 、L 2 、L N The ground wire PE is connected, the output end of the control module is connected with the input end of the communication module, the input end of the communication module is connected with the time synchronization module through a signal wire, the output end of the communication module is connected with the input end of the information receiving module through a wireless signal, and the information is receivedThe output end of the module is connected with the input end of the data storage module, the output end of the data storage module is connected with the input end of the monitoring master station module,
the signal generation module comprises a signal source, a power amplifier, a step-up transformer and a signal coupler; the signal source outputs an array original signal lattice by a singlechip, the array original signal lattice is analyzed into continuous signals by a DA circuit, and the signals output by the signal source are coupled to a branch L of a power distribution network through a power amplifier, a step-up transformer and a signal coupler 1 、L 2 、L N The upper part of the upper part is provided with a plurality of grooves,
the communication module comprises a satellite communication module and a GPRS module, the satellite communication module is connected with the input end of a satellite antenna, the output end of the satellite antenna is connected with the input end of an information receiving module, the output end of the GPRS module is connected with the input end of a 3G antenna, the output end of the 3G antenna is connected with the input end of the information receiving module,
the control module comprises a main processing unit, a monitoring signal receiving unit, a signal generator receiving unit and a fault information sending unit; the monitoring signal receiving unit sends the real-time signal monitored by the monitoring module to the main processing unit, the signal generator sends the signal received by the receiving unit to the main processing unit, the main processing unit takes the synchronous signal as the judging basis,
the output end of the control module is connected with the input end of the indicator light module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081129.4A CN109061395B (en) | 2018-09-17 | 2018-09-17 | Quick fault location appearance of distribution network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081129.4A CN109061395B (en) | 2018-09-17 | 2018-09-17 | Quick fault location appearance of distribution network |
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| CN109061395A CN109061395A (en) | 2018-12-21 |
| CN109061395B true CN109061395B (en) | 2024-02-27 |
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| CN201811081129.4A Active CN109061395B (en) | 2018-09-17 | 2018-09-17 | Quick fault location appearance of distribution network |
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| CN110297201B (en) * | 2019-07-02 | 2021-08-24 | 国网四川省电力公司电力科学研究院 | A system and method for calibrating transfer characteristics of a broadband transient voltage measuring device |
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| EP2741390A1 (en) * | 2012-12-06 | 2014-06-11 | Schneider Electric Industries SAS | Directional detection of a fault, in particular in a network with compensated or insulated neutral |
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| CN208818787U (en) * | 2018-09-17 | 2019-05-03 | 国网河南省电力公司商丘供电公司 | A rapid fault location instrument for distribution network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8711711B2 (en) * | 2008-10-31 | 2014-04-29 | Howard University | System and method of detecting and locating intermittent and other faults |
| CN102227090B (en) * | 2011-06-27 | 2013-08-21 | 山西省电力公司临汾供电分公司 | Intelligent FA (feeder automation) system of 10kV-carrier communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011124116A1 (en) * | 2010-04-09 | 2011-10-13 | 华为终端有限公司 | Voltage driving apparatus for power amplifier, power amplifying system, power supply device for radio frequency power amplifier and communication device |
| EP2741390A1 (en) * | 2012-12-06 | 2014-06-11 | Schneider Electric Industries SAS | Directional detection of a fault, in particular in a network with compensated or insulated neutral |
| CN203012073U (en) * | 2012-12-31 | 2013-06-19 | 广东电网公司电力科学研究院 | Power distribution network line fault positioning system |
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| CN105116296A (en) * | 2015-10-12 | 2015-12-02 | 国家电网公司 | Special fault indicator for high-voltage power transmission network cable line |
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| CN109061395A (en) | 2018-12-21 |
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