CN203870198U - Partial discharge monitoring equipment for traction substation feed cable - Google Patents
Partial discharge monitoring equipment for traction substation feed cable Download PDFInfo
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- CN203870198U CN203870198U CN201320740076.9U CN201320740076U CN203870198U CN 203870198 U CN203870198 U CN 203870198U CN 201320740076 U CN201320740076 U CN 201320740076U CN 203870198 U CN203870198 U CN 203870198U
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- partial discharge
- traction substation
- cable
- feed cable
- temperature
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Abstract
Disclosed is partial discharge monitoring equipment for a traction substation feed cable. The partial discharge monitoring equipment is composed in the following manner: a terminal computer (2) with a GSM signal receiving module is installed in a traction substation; a plurality of cabal partial discharge monitors (1) are distributed on the traction substation feed cable; each cable partial discharge monitor (1) is composed of a sound sensor (11), a temperature sensor (12), a single-chip microcomputer (13) and a GSM signal transmitting module (14) which are successive connected and which share one power supply (15); and the power supply (15) is composed of an induction coil (15A), a rectification circuit (15B), a DC-DC conversion circuit (15C) and a storage battery (15D) which are successively connected. The equipment is low in cost; the equipment can fully, rapidly and accurately determine and position partial discharge fault points of the feed cable, so convenience is provided for timely maintenance; and safe, reliable and efficient operation of the feed cable is guaranteed well.
Description
Technical field
The utility model relates to a kind of traction substation feeder cable partial discharge monitoring device.
Background technology
China Express Railway development is at present very fast, and high-speed railway adopts overhead bare conductor mode electric energy transmitting conventionally.But for ensuring safety, improve the reliability of power supply, replace overhead bare conductor in traction institute to the single-core crosslinked PEF of high pressure (XLPE) cables that adopt between contact net more, be referred to as feeder cable; As draw institute to having building or city must adopt especially feeder cable power supply between contact net.If breaking down, feeder cable will cause whole draft arm to lose electric energy, so the status of feeder cable in tractive power supply system is very important.After but feeder cable puts into operation, due to self and the factor such as extraneous, can progressively there is catabiosis and shelf depreciation occurs, finally cause short trouble in insulation course.Therefore, the shelf depreciation of on-line monitoring feeder cable, the long-term stability operation to feeder cable and troubleshooting and maintenance have extremely important meaning.But there is no at present special feeder cable local discharge on-line monitoring device, but based on fiber grating sensing technology, feeder cable is carried out to on-line temperature monitoring, as the temperature anomaly of measuring, infer that partial discharges fault may occur feeder cable, then carry out manual confirmation.Its existing problems: 1, FBG monitoring equipment price is too high, pass through optical fiber wired connection between sensor and optical fiber demodulating apparatus, the many rapid wears of fibre circuit, and monitoring cost is high, conventionally only installs at joint and corner, easily formation monitoring blind spot; 2, the temperature of a monitoring cable, the abnormal reason of monitor temperature, except shelf depreciation, may be also that ambient temperature changes or grating temperature equipment itself breaks down etc., thereby cannot judge reliably whether feeder cable shelf depreciation occurs.
Utility model content
The purpose of this utility model is just to provide a kind of traction substation feeder cable partial discharge monitoring equipment, the cost of this equipment is low, and can be comprehensively, judge fast and accurately, orient the partial discharges fault point of feeder cable, so that on-call maintenance, thereby better ensure safely, reliably and efficiently operation of feeder cable.
The utility model is realized the technical scheme that its goal of the invention adopts, a kind of traction substation feeder cable partial discharge monitoring equipment, and its composition is:
The terminal computer of mounting strap GSM signal receiving module in rail traction substation; Multiple cable local discharge monitors distribute on traction substation feeder cable; Wherein, each cable local discharge monitor is connected successively and forms and four shared power supplys by sound transducer, temperature sensor, single-chip microcomputer and GSM signal emission module; Described power supply is connected and forms successively with accumulator by inductive coil, rectification circuit, straight translation circuit.
Principle of work of the present utility model and process are:
A, sound and temperature signal collection:
By sound and the temperature signal at sound transducer and temperature sensor Real-time Collection cable local discharge monitor place, and input single-chip microcomputer, the simulating signal of the sound receiving and temperature is converted to sound and temperature digital signal by single-chip microcomputer;
The transmission of B, live signal:
Single-chip microcomputer is according to the time interval of setting, and the positional information that A is walked the sound of gained and the cable local discharge monitor of temperature digital signal and correspondence by control GSM signal emission module is uploaded to terminal computer;
The real-time processing of C, signal:
Terminal computer walks the sound uploaded and temperature digital signal and corresponding positional information to B and processes, and shows in real time on computers the temperature of feeder cable---position curve, sound---position curve according to result;
The judgement of D, shelf depreciation and location:
Work as temperature---there is exceeding the temperature value of temperature threshold in position curve, also there is exceeding the sound value of sound threshold value in sound---position curve, when the position corresponding to peak point of and temperature---position curve, sound---position curve is same point, terminal computer judges on feeder cable shelf depreciation occurred, near the peak point position of partial discharge position is temperature---position curve or sound---position curve.
Compared with prior art, the beneficial effects of the utility model are:
One,, by temperature and the shelf depreciation sound of real time on-line monitoring cable, in the time that temperature and cacophonia appear in same position simultaneously, the shelf depreciation sound of this place of synthetic determination existing " taste " produces, and has also caused the rising of temperature simultaneously because of shelf depreciation; Therefore assert that partial discharges fault has occurred at this place.Avoid the detected temperatures can be because of the erroneous judgement that ambient temperature changes or the reason such as temperature sensor faults itself is brought.Its monitoring, positioning result fast, accurately, reliably, are convenient to on-call maintenance, thereby better ensure safely, reliably and efficiently operation of feeder cable.
Two, sound transducer and temperature sensor can be selected various existing conventional sound transducers and temperature sensor, and the construction cost of equipment is low; Each monitor is communicated by letter by wireless mode with terminal computer, and the monitor power supply being made up of inductive coil, rectification circuit, straight translation circuit and accumulator has also been avoided the laying of power lead.Thereby whole equipment has also reduced structure, installation, the monitoring cost of equipment without laying optical fiber or connecting line, improved its reliability of operation.Monitoring cost is low, can monitor be installed along the line at cable, and to remove monitoring blind spot, monitoring more comprehensively, positioning precision is higher.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the integrated circuit theory diagram of the monitoring equipment of the utility model embodiment.
Fig. 2 is the schematic block circuit diagram of power supply in the monitor of the utility model embodiment.Wherein figure number 1 is cable.
Embodiment
Embodiment
Fig. 1-2 illustrates, a kind of embodiment of the present utility model is, a kind of traction substation feeder cable partial discharge monitoring equipment, and its composition is:
The terminal computer 2 of mounting strap GSM signal receiving module in rail traction substation; Multiple cable local discharge monitors distribute on traction substation feeder cable; Wherein, each cable local discharge monitor 1 is connected successively and forms and four shared power supplys 15 by sound transducer 11, temperature sensor 12, single-chip microcomputer 13 and GSM signal emission module 14; Described power supply 15 is connected and forms successively with accumulator 15D by inductive coil 15A, rectification circuit 15B, straight translation circuit 15C.
Use this routine partial discharge monitoring equipment traction substation feeder cable to be carried out to the method for partial discharge monitoring, the steps include:
A, sound and temperature signal collection:
By sound and the temperature signal at sound transducer 11 and temperature sensor 12 Real-time Collection cable local discharge monitor places, and input single-chip microcomputer 13, the simulating signal of the sound receiving and temperature is converted to sound and temperature digital signal by single-chip microcomputer 13;
The transmission of B, live signal:
Single-chip microcomputer 13 is according to the time interval of setting, and the positional information that A is walked the sound of gained and the cable local discharge monitor of temperature digital signal and correspondence by control GSM signal emission module 14 is uploaded to terminal computer 2;
The real-time processing of C, signal:
Terminal computer walks the sound uploaded and temperature digital signal and corresponding positional information to B and processes, and shows in real time on computers the temperature of feeder cable---position curve, sound---position curve according to result;
The judgement of D, shelf depreciation and location:
Work as temperature---there is exceeding the temperature value of temperature threshold in position curve, also there is exceeding the sound value of sound threshold value in sound---position curve, when the position corresponding to peak point of and temperature---position curve, sound---position curve is same point, terminal computer judges on feeder cable shelf depreciation occurred, near the peak point position of partial discharge position is temperature---position curve or sound---position curve.
The distribution of multiple cable local discharge monitor 1 of the present utility model on cable, both can be uniformly distributed along the line, also can distribute closeer at joint and corner; The higher while cost of more intensive its Monitoring and Positioning precision that distributes is corresponding can raising also, and its distribute spacing is 1-3 rice conventionally.And temperature and sound threshold value can be drawn by test, general temperature threshold is 90 DEG C, and sound threshold value can be three times of normal background level of noise.
Claims (1)
1. a traction substation feeder cable partial discharge monitoring equipment, is characterized in that:
The terminal computer (2) of mounting strap GSM signal receiving module in rail traction substation; Multiple cable local discharge monitors distribute on traction substation feeder cable; Wherein, each cable local discharge monitor is connected successively and forms and four shared power supplys (15) by sound transducer (11), temperature sensor (12), single-chip microcomputer (13) and GSM signal emission module (14); Described power supply (15) is by inductive coil (15A), rectification circuit (15B), straight translation circuit (15C) and accumulator (15D) formation that is connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740076.9U CN203870198U (en) | 2013-11-20 | 2013-11-20 | Partial discharge monitoring equipment for traction substation feed cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740076.9U CN203870198U (en) | 2013-11-20 | 2013-11-20 | Partial discharge monitoring equipment for traction substation feed cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203870198U true CN203870198U (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320740076.9U Expired - Fee Related CN203870198U (en) | 2013-11-20 | 2013-11-20 | Partial discharge monitoring equipment for traction substation feed cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203870198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616620A (en) * | 2013-11-20 | 2014-03-05 | 西南交通大学 | Traction substation feeder cable partial discharge monitoring device and monitoring method |
-
2013
- 2013-11-20 CN CN201320740076.9U patent/CN203870198U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616620A (en) * | 2013-11-20 | 2014-03-05 | 西南交通大学 | Traction substation feeder cable partial discharge monitoring device and monitoring method |
| CN103616620B (en) * | 2013-11-20 | 2016-08-17 | 中国铁路总公司 | A kind of traction substation feeder cable partial discharge monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20161120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |