CN202066933U - Fault detecting and positioning device for ultrahigh voltage line - Google Patents
Fault detecting and positioning device for ultrahigh voltage line Download PDFInfo
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- CN202066933U CN202066933U CN2010206284201U CN201020628420U CN202066933U CN 202066933 U CN202066933 U CN 202066933U CN 2010206284201 U CN2010206284201 U CN 2010206284201U CN 201020628420 U CN201020628420 U CN 201020628420U CN 202066933 U CN202066933 U CN 202066933U
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- fault detecting
- voltage line
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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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Abstract
The utility model relates to the field of electric power monitoring, in particular to a high voltage line monitoring device. A fault detecting and positioning device for an ultrahigh voltage line comprises a fault detecting module, the fault detecting module connected with a fault analyzing module comprises at least two fault detecting slave modules, and each fault detecting slave module is provided with a current phase measurer used for sampling current phases of a high voltage line. The fault analyzing module is provided with a current phase comparison module, and the two fault detecting slave modules are connected to the current phase comparison module respectively. The fault detecting and positioning device adopting the technical scheme is simple, accurate and rapid in ultrahigh voltage line detection, fault alarming is completed by means of wireless signal transmission technique, and thereby fault detection is greatly facilitated, workload of line searching is effectively relieved, and fault repairing time is shortened.
Description
Technical field
The utility model relates to the electric power monitoring field, is specifically related to a kind of hi-line monitoring device.
Background technology
Along with the continuous development of electric system, UHV (ultra-high voltage), long distance transmission line get more and more, and the accurate location of line fault point more shows its importance.Seek the workload of looking into for reducing circuit, shorten fault correction time, save great amount of manpower and material resources, improve power supply reliability, reduce loss of outage, strengthen also improving system's operation and management level, press for when breaking down and accurately to search the trouble spot in system.
Quick, the accurate location of ultra-high-tension power transmission line fault can not get solving preferably for a long time, and this directly influences the service restoration time of faulty line, has brought white elephant also for circuit operation maintenance personnel.In order to solve this difficult problem, localization of fault has been carried out further investigation widely both at home and abroad.
The line fault point location is searched way at present generally has following several:
1. utilize the routine location of steady-state quantity
Based on the localization of fault of fault steady-state quantity is the focus of research both at home and abroad always, has formed the localization method of multiple maturations such as single-ended, multiterminal, impedance, parsing.In theory, these Fault Locating Method precision are very high, and EM TP simulation result shows that positioning error is all in the scope of total track length 1%.But the following point that more or less exists in service at the scene: 1. be subjected to the influence of the progress of disease characteristic of voltage, current transformer; 2. be subjected to line parameter circuit value and influence on system parameters; 3. fault transient harmonic effects measuring accuracy.Therefore the conventional fault locating device moves unsatisfactory at the scene.In addition, on the fault oscillograph of present domestic operation with localization of fault software, general adopt the impedance localization method, based on lumped parameter model, have the numerical solution convergence and the pseudo-root problem of range finding equation, for the accurate location difficulty particularly of high resistance earthing fault.
2. go the ripple localization method
People recognize that very early detecting voltage, the travel-time of current traveling wave between bus and trouble spot can measure fault distance.Owing to go velocity of wave propagation near the light velocity, and be not subjected to the influence of factors such as trouble spot resistance, line construction and mutual inductor mapping fault, therefore higher measuring accuracy is arranged.Traveling-wave device adopts based on single-end electrical quantity A type, the E type distance-finding method that utilizes the D type of both-end electric parameters and utilize the reclosing signal.Line fault row ripple is a kind of high frequency transient signal with emergent properties, non-stationary variation, is wherein comprising abundant failure message (equating as fault distance, fault).Wavelet transformation technique is a kind of strong mathematical tool of transient signal of analyzing that development in recent years is got up, and it is applied to the analysis of fault traveling wave signal, can correctly extract and discern these failure messages, solves the automatic recognition problem of the capable wave-wave shape of one-end fault.
The key of row ripple location be the time synchronously and the seizure of row wave-wave head, mainly have following problem at present: the 1. stability of gps clock and precision; 2. the capable ripple jump signal that is produced by the silicon threshold switch of switching overvoltage, induced overvoltage and the direct current rectification of electric system etc. may make the malfunction of capable ripple locating device; 3. voltage zero cross near fault constantly, row wave-wave head is mild, accurately catches row ripple due in difficulty; 4. close-in fault is subjected to the restriction of sample frequency, detection difficult; 5. the ripple of going transmits dispersion characteristics, causes the decay and the distortion of row wave-wave head, and row wave-wave head slows down, influence row ripple bearing accuracy.Be subjected to the restriction of above factor, row is about, and the row ripple is positioned at on-the-spot operation and also is subjected to certain restriction.
The utility model content
The purpose of this utility model is to provide a kind of supertension line fault detect locating device, to solve the problems of the technologies described above.
Supertension line fault detect locating device comprises a fault detection module, and described fault detection module connects a failure analysis module, it is characterized in that, described malfunction monitoring module comprises at least two failure detection sub;
Described failure detection sub is provided with and is used for current phase measuring appliance that the high-tension line current phase is taken a sample;
Described failure analysis module is provided with a current phase comparison module, and two described failure detection sub are connected respectively to described current phase comparison module.
Two described failure detection sub are separately positioned on the two ends of hi-line to be measured.Respectively the current phase at hi-line to be measured two ends is taken a sample by two current phase measuring appliances.Two current phase information transmission after the sampling are given described current phase comparison module, and described current phase comparison module compares two current phase information.Because the current phase information at two ends can be no longer consistent when hi-line fault to be measured, therefore two current phase information be compared and to draw the conclusion whether hi-line to be measured breaks down by described current phase comparison module.
Described current phase measuring appliance inserts described hi-line to be measured by a current transformer.Current phase measuring appliance and hi-line to be measured can better guarantee the normal operation of original system without any being electrically connected, and also can guarantee the trouble free service of current phase measuring appliance.
Supertension line fault detect locating device also comprises a wireless signal sending module, and described failure analysis module connects described wireless signal sending module.Described failure analysis module sends the information that comprises failure message by described wireless signal sending module to the external world.Described wireless signal sending module can also comprise information such as positional information, fault type in the information that the external world sends.
Described wireless signal sending module can adopt a wireless communication module based on the mobile phone networking.The field personnel only needs the mode by the note reception, can search the position that line fault takes place quickly and accurately, has reduced greatly because line walking is searched the time of trouble spot, has shortened power off time.
Beneficial effect: owing to adopt technique scheme, it is simple, accurate, quick that the utility model detects supertension line, and adopt wireless signal transmission techniques to carry out fault alarm, greatly facilitates fault detect work, can effectively reduce circuit and seek the workload of looking into, shorten fault correction time.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is the principle assumption diagram of exemplifying embodiment 1 of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
With reference to Fig. 1, Fig. 2, supertension line fault detect locating device comprises fault detection module, and fault detection module connects failure analysis module 2, and the malfunction monitoring module comprises at least two failure detection sub 1; Failure detection sub 1 is provided with and is used for current phase measuring appliance that the high-tension line current phase is taken a sample; The current phase measuring appliance inserts hi-line 4 to be measured by current transformer.Failure analysis module 2 is provided with the current phase comparison module, and two failure detection sub 1 are connected respectively to the current phase comparison module.Two failure detection sub 1 are separately positioned on the two ends of hi-line 4 to be measured.Respectively the current phase at hi-line to be measured 4 two ends is taken a sample by two current phase measuring appliances.Two current phase information transmission after the sampling are given the current phase comparison module, and the current phase comparison module compares two current phase information.Because the current phase information at two ends can be no longer consistent when hi-line 4 faults to be measured, therefore two current phase information be compared and to draw the conclusion whether hi-line 4 to be measured breaks down by the current phase comparison module.
Supertension line fault detect locating device also comprises wireless signal sending module 3, and failure analysis module 2 connects wireless signal sending module 3.Failure analysis module 2 sends the information that comprises failure message by wireless signal sending module 3 to the external world.Wireless signal sending module 3 can also comprise information such as positional information, fault type in the information that the external world sends.Wireless signal sending module 3 can adopt a wireless communication module based on the mobile phone networking.The field personnel only needs the mode by the note reception, can search the position that line fault takes place quickly and accurately, has reduced greatly because line walking is searched the time of trouble spot, has shortened power off time.
Exemplifying embodiment 1 with reference to Fig. 2, uses the utility model to detect hi-line to be measured 4 fault whether between adjacent two shaft towers 41, the shaft tower 42.Two failure detection sub 1 are separately positioned on shaft tower 41, shaft tower 42 places, failure analysis module 2 and wireless signal sending module 3 are arranged on any place in shaft tower 41 or the shaft tower 42 together, suppose that the current phase comparison module compares two current phase information, comparative approach can adopt the warning value of current phase difference and setting to compare, the current phase difference is during greater than warning value, send fault alarm information to the external world, hypothesis setting this moment warning value is 90 degree.
When circuit normally moves, the current phase that two failure detection sub 1 record is respectively Φ 1, Φ 2, and Φ 1, Φ 2 are sent to the current phase comparison module of failure analysis module 2 respectively, the current phase comparison module calculates current phase difference Ψ=Φ 1-Φ 2 ≈ 0, current phase difference Ψ is less than warning value 90 degree, and wireless signal sending module 3 does not send fault alarm information at this moment;
When the high-tension line fault outside shaft tower 41 and the shaft tower 42, because the direction of current of two failure detection sub 1 is identical, so both measured current phase direction unanimities, current phase difference Ψ=Φ A-Φ B ≈ 0 can not send out fault alarm information by mistake yet at this moment;
When fault occurs between shaft tower 41 and the shaft tower 42, the current phase of two failure detection sub 1 is opposite owing to flow through, the current phase that this moment, both surveyed differs 180 degree, it is current phase difference Ψ=Φ A-Φ B=180 degree, current phase difference Ψ is greater than warning value 90 degree, trigger fault alarm information this moment, failure analysis module 2 will comprise that the information of fault alarm information sends wireless signal sending module 3 to, wireless signal sending module 3 passes through the mode of SMS with fault alarm information, information such as abort situation information send to staff's mobile phone 5, finish remote alarms.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not subjected to the restriction of above-mentioned using method; that describes in above-mentioned using method and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. supertension line fault detect locating device comprises a fault detection module, and described fault detection module connects a failure analysis module, it is characterized in that, described malfunction monitoring module comprises at least two failure detection sub;
Described failure detection sub is provided with and is used for current phase measuring appliance that the high-tension line current phase is taken a sample;
Described failure analysis module is provided with a current phase comparison module, and two described failure detection sub are connected respectively to described current phase comparison module.
2. supertension line fault detect locating device according to claim 1 is characterized in that described current phase measuring appliance inserts described hi-line to be measured by a current transformer.
3. supertension line fault detect locating device according to claim 1 and 2 is characterized in that supertension line fault detect locating device also comprises a wireless signal sending module, and described failure analysis module connects described wireless signal sending module.
4. supertension line fault detect locating device according to claim 3 is characterized in that, described wireless signal sending module adopts a wireless communication module based on the mobile phone networking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206284201U CN202066933U (en) | 2010-11-26 | 2010-11-26 | Fault detecting and positioning device for ultrahigh voltage line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206284201U CN202066933U (en) | 2010-11-26 | 2010-11-26 | Fault detecting and positioning device for ultrahigh voltage line |
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| CN202066933U true CN202066933U (en) | 2011-12-07 |
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| CN2010206284201U Expired - Fee Related CN202066933U (en) | 2010-11-26 | 2010-11-26 | Fault detecting and positioning device for ultrahigh voltage line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955101A (en) * | 2012-11-14 | 2013-03-06 | 邯郸供电公司 | Precise positioning system for insulator faults |
| CN102998596A (en) * | 2012-12-20 | 2013-03-27 | 诸暨市供电局 | System for detecting faults of overhead line and detection method thereof |
| CN103995174A (en) * | 2014-05-30 | 2014-08-20 | 中国民航大学 | Simple lightning stroke current automatic reporting and recording method and system |
-
2010
- 2010-11-26 CN CN2010206284201U patent/CN202066933U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955101A (en) * | 2012-11-14 | 2013-03-06 | 邯郸供电公司 | Precise positioning system for insulator faults |
| CN102998596A (en) * | 2012-12-20 | 2013-03-27 | 诸暨市供电局 | System for detecting faults of overhead line and detection method thereof |
| CN103995174A (en) * | 2014-05-30 | 2014-08-20 | 中国民航大学 | Simple lightning stroke current automatic reporting and recording method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI JIULONG ELECTRIC POWER (GROUP) CO., LTD. Free format text: FORMER OWNER: SHANGHAI ELECTRIC POWER TECHNOLOGY DEVELOPMENT CO., LTD.;SUZHOU AIJIAN PORCELAIN CO., LTD.;SHANGHAI SOUTH POWER SUPPLY ENGINEERING CO., LTD. Effective date: 20120719 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200070 ZHABEI, SHANGHAI TO: 200071 ZHABEI, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120719 Address after: 200071 No. 1394, Lane 3, Zhongxing Road, Shanghai Co-patentee after: Shanghai Electric Power Corporation Patentee after: Shanghai Jiulong Electric Power (Group) Co., Ltd. Address before: 200070 Shanghai city Zhabei District Minli Road No. 183 Co-patentee before: Shanghai Electric Power Corporation Patentee before: Shanghai Electric Power Live Working Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20191126 |