CN105372555A - Electric power monitoring system having fault position detection function - Google Patents
Electric power monitoring system having fault position detection function Download PDFInfo
- Publication number
- CN105372555A CN105372555A CN201510750452.6A CN201510750452A CN105372555A CN 105372555 A CN105372555 A CN 105372555A CN 201510750452 A CN201510750452 A CN 201510750452A CN 105372555 A CN105372555 A CN 105372555A
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- signal
- electric power
- monitoring system
- power monitoring
- electromagnetic inductor
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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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- 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)
- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides an electric power monitoring system having a fault position detection function. The electric power monitoring system is characterized by comprising a first signal emission source, a second signal emission source, a signal detector and a signal analyzer. According to the electric power monitoring system, a fault generation position can be determined by loading a predetermined-frequency pulse signal into an electrical signal of the electrical network and analyzing the loaded predetermined-frequency pulse signal, moreover, a magnetic field inductor is further added to the electric power monitoring system and is taken as equipment for assisting the system in determining the fault generation position, the electric power fault position is determined through monitoring change of the magnetic field generated in an electric power transmission process, through comprehensive analysis on determination made by the two, the found fault position can be more precise.
Description
Technical field
The present invention relates to a kind of electric power monitoring system, be specifically related to a kind of electric power monitoring system with abort situation measuring ability.
Background technology
Modern society for a long time Ying Jing enters the electric era, the productive life amusement of the mankind be unable to do without electrically for a long time, once the power supply in society goes wrong, material production and other economic activities are then absorbed in pause and even collapse, and the daily life of the people also can be difficult to move even one step and fall into chaos.
Therefore, ensure that electric power supply is the topmost task of national grid.
But, because China is vast in territory, network system is also extremely complicated, and the circuit in electrical network often breaks down because of the situation such as disaster, artificial origin, therefore, it is possible to it is vital for recognizing the position that fault occurs in time and carrying out maintenance in time.
But, also do not have at present to detect that the supervisory system of position occurs electric network fault exactly.
Summary of the invention
For problems of the prior art, the present invention overcomes the deficiencies in the prior art, desirable to provide a kind of supervisory system that can detect electric network fault position.
The technical solution adopted in the present invention is:
Have an electric power monitoring system for abort situation measuring ability, it is characterized in that, described electric power monitoring system comprises: the first signal emitting-source, secondary signal emissive source, signal detector, signal analyzer.
Further, described first signal emitting-source is launched modulation signal with the modulating pulse gradually changed in real time and is injected the Article 1 power transmission line of power distribution network basic routing line, and the modulating pulse that described secondary signal emissive source gradually changes with another kind is launched modulation signal and is injected in the Article 2 transmission line of electricity of power distribution network basic routing line; The variation pattern of the modulating pulse of the first signal emitting-source and secondary signal emissive source is different from each other.
Further, two described signal detectors are a pair, described signal detector is attempted by described basic routing line every preset distance, one end of each signal detector and a power transmission line also connect, the other end is through super large resistance eutral grounding, described signal detector comprises wave filter, described wave filter is used for the electric current of filtering transmission frequency, and extract the modulating pulse of injecting power transmission line, sending to described signal analyzer, there is position in last the modulating pulse determination fault before described signal analyzer occurs based on fault detected by each signal detector.
Further, described electric power monitoring system also comprises electromagnetic inductor, in the transmission route of electrical network, every preset distance, an electromagnetic inductor is set, each electromagnetic inductor is equipped with a signal projector, and described electromagnetic inductor can be measured in grid power transmission circuit due to the magnetic field of electric current by producing.
Further, remote communication module is preset in described electromagnetic inductor, the ID of the magnetic field intensity measured by it and corresponding electromagnetic inductor can be sent to described signal analyzer by real time or with predetermined space, described signal analyzer is based on the change in magnetic field measured by described electromagnetic inductor, and once there is electric network fault in electrical network, then based on the place that the changes of magnetic field failure judgement measured by each electromagnetic inductor occurs.Preferably, the signal that the electromagnetic inductor of described signal analyzer to diverse location place is beamed back carries out difference processing, find the ID of the electromagnetic inductor of the position maximum with the signal difference of the electromagnetic inductor of every other position, this electromagnetic inductor is then near abort situation.The situation that this judgment mode disconnects (such as, circuit scraped disconnected) by wind for circuit is especially effective.If there is the difference of the signal of two electromagnetic inductors and other electromagnetic inductors all very large, then short circuit is positioned at therebetween.
Present inventor finds, electric current in transmission line of electricity in power transmission line can produce certain magnetic field, and there is certain rule in this magnetic field, when transmission line of electricity keeps constant, when namely there is not fracture, the large cognition in magnetic field maintains its intrinsic rule, and once circuit disconnection a bit occurs for certain in transmission line of electricity, then the changes of magnetic field at breakpoint place can have significantly different from the changes of magnetic field of other positions, this is because, at non-breakpoint place, its two ends are continuous print, during power-off, just magnetic field is reduced rapidly, and at breakpoint place, due to the Circuit Interrupt that the disconnection being himself causes, feeder ear is just powered to it, so when it disconnects, breakpoint place can produce larger magnetic fluctuation.
But, because this fluctuation is the difference difference to some extent along with the form of disconnection, so do not have very good rule to follow.But there is any to be affirmative, namely there is notable difference at the changes of magnetic field right and wrong breakpoint place at breakpoint place, and therefore, the present invention adopts the mode of the signal at diverse location place being carried out to difference between two, judge the signal maximum with the signal difference of every other position, it is the signal that position occurs fault.
Embodiment
Embodiment 1
The present embodiment provides a kind of electric power monitoring system with abort situation measuring ability, and it comprises: the first signal emitting-source, secondary signal emissive source, signal detector, signal analyzer.
First signal emitting-source is launched modulation signal with the frequency gradually changed in real time and is injected the Article 1 power transmission line of power distribution network basic routing line, and the frequency that secondary signal emissive source gradually changes with another kind is launched modulation signal and is injected in the Article 2 transmission line of electricity of power distribution network basic routing line; The frequency change mode of the first signal emitting-source and secondary signal emissive source is different from each other.
Multiple signal detector can be adopted, each signal detector is attempted by an electrical network exit, each signal detector detects the signal of two transmission lines of electricity respectively, signal detector can rejection frequency be the electric signal of mains frequency, then obtains the signal that the first signal emitting-source or secondary signal emissive source send.
Last modulation signal received by it is sent to signal analyzer by each signal detector in real time, then signal analyzer just can know clearly the modulation signal received by each signal detector.Once circuit generation open circuit, then last modulation signal of receiving of the signal detector in supply line downstream is by different from the modulation signal that a upper signal detector receives.Prove to there is open circuit therebetween.
Embodiment 2
In the present embodiment, electric power monitoring system adopts structure substantially the same manner as Example 1, just in the present embodiment, described electric power monitoring system also comprises electromagnetic inductor, in the transmission route of electrical network, arrange an electromagnetic inductor every preset distance, each electromagnetic inductor is equipped with a signal projector, and described electromagnetic inductor can be measured in grid power transmission circuit due to the magnetic field of electric current by producing.
Remote communication module is preset in described electromagnetic inductor, the ID of the magnetic field intensity measured by it and corresponding electromagnetic inductor can be sent to described signal analyzer by real time or with predetermined space, and described signal analyzer comes the position of failure judgement based on magnetic field difference size each other measured by described electromagnetic inductor.Once there is electric network fault in electrical network, then based on the place that the changes of magnetic field failure judgement measured by each electromagnetic inductor occurs.Preferably, the signal that the electromagnetic inductor of described signal analyzer to diverse location place is beamed back carries out difference processing, find the ID of the electromagnetic inductor of the position maximum with the signal difference of the electromagnetic inductor of every other position, this electromagnetic inductor is then near abort situation.The situation that this judgment mode disconnects (such as, circuit scraped disconnected) by wind for circuit is especially effective.
Although be described in detail principle of the present invention in conjunction with the preferred embodiments of the present invention, it should be appreciated by those skilled in the art that above-described embodiment is only the explanation to exemplary implementation of the present invention above, not the present invention is comprised to the restriction of scope.Details in embodiment does not form limitation of the scope of the invention; when not deviating from the spirit and scope of the present invention; the apparent changes such as any equivalent transformation based on technical solution of the present invention, simple replacement, all drop within scope.
Claims (4)
1. have an electric power monitoring system for abort situation measuring ability, it is characterized in that, described electric power monitoring system comprises: the first signal emitting-source, secondary signal emissive source, signal detector, signal analyzer.
2. the electric power monitoring system with abort situation measuring ability according to claim 1, it is characterized in that, described first signal emitting-source is launched modulation signal with the modulating pulse gradually changed in real time and is injected the Article 1 power transmission line of power distribution network basic routing line, and the modulating pulse that described secondary signal emissive source gradually changes with another kind is launched modulation signal and is injected in the Article 2 transmission line of electricity of power distribution network basic routing line; The variation pattern of the modulating pulse of the first signal emitting-source and secondary signal emissive source is different from each other.
3. the electric power monitoring system with abort situation measuring ability according to claim 2, it is characterized in that, two described signal detectors are a pair, described signal detector is attempted by described basic routing line every preset distance, one end of each signal detector and a power transmission line also connect, the other end is through super large resistance eutral grounding, described signal detector comprises wave filter, described wave filter is used for the electric current of filtering transmission frequency, and extract the modulating pulse of injecting power transmission line, send to described signal analyzer, there is position in last the modulating pulse determination fault before described signal analyzer occurs based on fault detected by each signal detector.
4. the electric power monitoring system with abort situation measuring ability according to claim 3, it is characterized in that, described electric power monitoring system also comprises electromagnetic inductor, in the transmission route of electrical network, every preset distance, an electromagnetic inductor is set, each electromagnetic inductor is equipped with a signal projector, and described electromagnetic inductor can be measured in grid power transmission circuit due to the magnetic field of electric current by producing.
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| CN201510750452.6A CN105372555B (en) | 2015-11-05 | 2015-11-05 | A kind of electric power monitoring system with abort situation detection function |
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| CN105372555A true CN105372555A (en) | 2016-03-02 |
| CN105372555B CN105372555B (en) | 2018-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864443A (en) * | 2017-10-30 | 2018-03-30 | 歌尔股份有限公司 | The disconnection detection device and detection method of headset batteries |
| CN109946565A (en) * | 2019-03-20 | 2019-06-28 | 天津大学 | A kind of household electric wire fault point locating device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133849Y (en) * | 1991-11-23 | 1993-05-19 | 邱礼儒 | Detector for cable faults |
| CN1376929A (en) * | 2002-01-18 | 2002-10-30 | 艾默生网络能源有限公司 | Monitor of electric cable breaking and its method |
| CN1447124A (en) * | 2002-03-24 | 2003-10-08 | 淄博科汇电气有限公司 | Method for detecting ground fault in DC system |
| CN1465986A (en) * | 2002-07-03 | 2004-01-07 | 广州智光电气有限公司 | Method for testing single phase grounding current of electric power network |
| CN1479107A (en) * | 2003-05-22 | 2004-03-03 | 华立集团有限公司 | Failure analysis monitoring method and system device used on power supply network |
| CN101382577A (en) * | 2008-10-24 | 2009-03-11 | 华北电力大学 | Single-phase earth fault positioning device for electrical power distribution network |
| CN101685128A (en) * | 2008-09-25 | 2010-03-31 | 黄江 | High tension line open circuit positioning device |
| CN102305901A (en) * | 2011-06-03 | 2012-01-04 | 西安福润德电子科技有限公司 | Method for detecting cable fault point by impact oscillating wave principle |
| CN102778636A (en) * | 2012-07-26 | 2012-11-14 | 北京飞举电气有限公司 | Single-phase ground fault location method and apparatus |
| CN102937675A (en) * | 2012-10-22 | 2013-02-20 | 江苏省电力公司常州供电公司 | Real-time data collecting and fault positioning system of power distribution network and working method thereof |
-
2015
- 2015-11-05 CN CN201510750452.6A patent/CN105372555B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133849Y (en) * | 1991-11-23 | 1993-05-19 | 邱礼儒 | Detector for cable faults |
| CN1376929A (en) * | 2002-01-18 | 2002-10-30 | 艾默生网络能源有限公司 | Monitor of electric cable breaking and its method |
| CN1447124A (en) * | 2002-03-24 | 2003-10-08 | 淄博科汇电气有限公司 | Method for detecting ground fault in DC system |
| CN1465986A (en) * | 2002-07-03 | 2004-01-07 | 广州智光电气有限公司 | Method for testing single phase grounding current of electric power network |
| CN1479107A (en) * | 2003-05-22 | 2004-03-03 | 华立集团有限公司 | Failure analysis monitoring method and system device used on power supply network |
| CN101685128A (en) * | 2008-09-25 | 2010-03-31 | 黄江 | High tension line open circuit positioning device |
| CN101382577A (en) * | 2008-10-24 | 2009-03-11 | 华北电力大学 | Single-phase earth fault positioning device for electrical power distribution network |
| CN102305901A (en) * | 2011-06-03 | 2012-01-04 | 西安福润德电子科技有限公司 | Method for detecting cable fault point by impact oscillating wave principle |
| CN102778636A (en) * | 2012-07-26 | 2012-11-14 | 北京飞举电气有限公司 | Single-phase ground fault location method and apparatus |
| CN102937675A (en) * | 2012-10-22 | 2013-02-20 | 江苏省电力公司常州供电公司 | Real-time data collecting and fault positioning system of power distribution network and working method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864443A (en) * | 2017-10-30 | 2018-03-30 | 歌尔股份有限公司 | The disconnection detection device and detection method of headset batteries |
| CN107864443B (en) * | 2017-10-30 | 2020-05-12 | 歌尔股份有限公司 | Earphone battery open circuit detection device and detection method |
| CN109946565A (en) * | 2019-03-20 | 2019-06-28 | 天津大学 | A kind of household electric wire fault point locating device |
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| CN105372555B (en) | 2018-04-06 |
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