CN201402539Y - Simulating device for electrical cable fault test - Google Patents
Simulating device for electrical cable fault test Download PDFInfo
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- CN201402539Y CN201402539Y CN2009200234441U CN200920023444U CN201402539Y CN 201402539 Y CN201402539 Y CN 201402539Y CN 2009200234441 U CN2009200234441 U CN 2009200234441U CN 200920023444 U CN200920023444 U CN 200920023444U CN 201402539 Y CN201402539 Y CN 201402539Y
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Abstract
The utility model relates to a simulating device for electrical cable fault test, which can be used for simulating various electrical cable faults. The simulating device comprises a transfer circuit,a protection circuit and a simulating cable, wherein the transfer circuit and the protection circuit are connected between a testing end S and a testing grounding end G of the simulating cable core line in parallel. Compared with the prior art, the utility model has the advantages that the electrical cable faults are accurately simulated; the field preparation time is reduced; the cost, the material and the labor are saved; the devices for fault types are complete; the structure is simple; and the device is favorable for testing personnel to enhance the proficiency degree in finding cable faults.
Description
Technical field
The power cable fault test simulator belongs to the cable fault detect apparatus field.
Background technology
The cable fault analogue means can simulate various power cable faults, is a kind of teaching instrumentation that the tester is giveed training.It can cooperate the power cable fault distance mearuring equipment to carry out the DCO process of in-site modeling, the various cable faults of demonstration.Improve tester's proficiency.
Some cable analogue means have been arranged aspect wireline test at present, but most of analogue means function ratio are more single, on unitary device, only can simulate simple fault type, as: short trouble or disconnection fault, generally can't simulate high resistive fault, and in actual test process, the cable fault great majority that run into are high resistive faults, in order to improve wireline test personnel's testing level, in some electric industry department or training center, for the dummycable fault, need huge investment to carry out the construction in wireline environment and place.Therefore, design a kind of small investment, function is complete, simple and practical cable fault analogue means has become each training on electric power department and has been badly in need of a task solving.
The utility model content
The technical problems to be solved in the utility model is: design a kind of device that can conveniently simulate various cable faults, can train wireline test personnel's test skill level, convenient test, power cable fault test simulator simple in structure.
The technical scheme that the utility model adopted is: this power cable fault test simulator; it is characterized in that: comprise change-over circuit, holding circuit, analog electrical cable, change-over circuit and holding circuit and be connected in dummycable core line test lead S and dummycable core line test earth terminal G between.
Change-over circuit comprises K switch 1, simulation high resistive fault point A1, simulation non-fault point B1, simulation flashover trouble spot C1 and simulation short circuit trouble point D1, K switch 1 one termination dummycable core line test lead S, the other end links to each other with simulation high resistive fault point A1, simulation non-fault point B1, simulation flashover trouble spot C1 and simulation short circuit trouble point D1 respectively, another termination dummycable core line test earth terminal of simulation high resistive fault point A1, simulation non-fault point B1, simulation flashover trouble spot C1 and simulation short circuit trouble point D1 G.
Change-over circuit divides three the tunnel, comprises simulation near terminal fault point, simulation far-end trouble spot and simulation intermediate ends trouble spot respectively.
No. three change-over circuits comprise 3 switch K1, K2, K3, simulate near terminal fault point A1, B1, C1, D1 for 4, simulate intermediate ends trouble spot A2, B2, C2, D2 for 4, simulate far-end trouble spot A3, B3, C3, D3 for 4.
Change-over circuit is two-way or multichannel.
Holding circuit F comprises up and down hold-down nut, mounting bracket, upper and lower contact and upper and lower contact sheath up and down; upper and lower contact is added with the upper and lower contact sheath outward respectively; by mounting bracket up and down, hold-down nut is fixed together up and down, leaves test breakdown voltage rating protection gap between the upper and lower contact.
The test breakdown voltage rating is 25kV.
The protection gap is two gaps between the discharge contact; it is below the 20kV that proper testing applies voltage; the protection gap is the distance that can puncture automatically when applying voltage 〉=25kV when testing; when test voltage surpasses this breakdown voltage rating value; the protection gap punctures automatically, avoids damaging the device internal components and the person is damaged.
This power cable fault test simulator is provided with the reason of three trouble spots: at near-end the trouble spot is set, can simulate near terminal fault, in the actual test, distinguish because the near terminal fault waveform is difficult, reflectance is severe, repeatedly tests to help grasping the near-end measuring technology; At far-end the trouble spot is set, mainly conveniently carries out the test of total length, can distinguish the waveform of total length simultaneously; The trouble spot of intermediate ends is beneficial to the grasp measuring technology, distinguishes fault waveform.More than the setting of different faults type of three kinds of different faults point positions represented cable faults all in the actual test.
The utility model is fully according to the on-the-spot structural design of power cable; in device inside dissimilar faults such as high resistant, low-resistance (short circuit) and flashover are set; and the trouble spot is separately positioned on near-end, far-end and intermediate ends; between cable core and screen layer, be provided with holding circuit; safety with protection instrument and site operation personnel; for cable training department and tester; do not need to make specially the complicated scene of cable fault and just different cable faults can be set, can greatly make things convenient for the tester skillfully to operate and train use.
Compared with prior art, the beneficial effect that the utility model had is: have can accurately simulate power cable fault, reduce place setup time, save financial resources, material resources and manpower, fault type be provided with complete, apparatus structure simple, help improving tester's cable fault searches advantages such as proficiency.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is the structural drawing of holding circuit F.
Fig. 1-2 is a most preferred embodiment of the present utility model.Among Fig. 1: K1, K2, K3 are switch, and S is the cable core test lead, and the G end is the test earth terminal, and A1, B1, C1, D1 are simulation near terminal fault point, and A2, B2, C2, D2 are simulation intermediate ends trouble spot, and A3, B3, C3, D3 are simulation far-end trouble spot.
Among Fig. 2: 1, hold-down nut about in the of 8,2,7 mounting brackets, 3,5 upper and lower contact sheaths, 4,6 upper and lower contacts.
Embodiment
Below in conjunction with accompanying drawing 1-2 the utility model power cable fault test simulator is described further.
As shown in Figure 1:
Change-over circuit in this power cable fault test simulator divides three the tunnel, and near terminal fault point change-over circuit is made up of K switch 1, simulation near terminal fault point A1, B1, C1, D1, is controlled by K switch 1; Intermediate ends trouble spot change-over circuit is made up of K switch 2, intermediate ends trouble spot A2, B2, C2, D2, is controlled by K switch 2; Far-end trouble spot change-over circuit is made up of K switch 3, simulation far-end trouble spot A3, B3, C3, D3, is controlled by K switch 3.Holding circuit F is by hold-down nut 1 and 8 up and down, mounting bracket 2 and 7, upper and lower contact sheath 3 and 5, upper and lower contact 4 and 6 are formed up and down, and the analog electrical cable is tested earth terminal G by cable heart yearn test lead S and analog electrical cable and formed.
A1, A2, A3 are the simulation high resistive fault in near-end, far-end, intermediate ends trouble spot No. three change-over circuits, B1, B2, B3 are the simulation non-fault mode, C1, C2, C3 are simulation flashover fault, D1, D2, D3 are the simulation short trouble, and the fault type of each road change-over circuit is controlled selection by K switch 1, K2, K3 respectively.
When K switch 2, the K3 of change-over circuit in the power cable fault test simulator are connected respectively to non-fault mode B2, B3, the position of by-pass cock K1, can make between dummycable core line test lead S and the analog electrical cable test earth terminal G and form dissimilar faults, when K switch 1 connects simulation high resistive fault A1, form high resistive fault, when K switch 1 connects simulation flashover fault C1, form the flashover fault, when K switch 1 connects simulation short trouble D1, form low-resistance (short circuit) fault; When K switch 1 connects non-fault mode B1, there is not fault 1 of K switch.
When K switch 1, the K3 of change-over circuit are connected respectively to non-fault mode B1, B3, the position of by-pass cock K2, can make and form dissimilar faults between dummycable core line test lead S and the analog electrical cable test earth terminal G: when K switch 2 connects simulation high resistive fault A2, form high resistive fault; When K switch 2 connects simulation flashover fault C2, form the flashover fault; When K switch 2 connects simulation short trouble D2, form low-resistance (short circuit) fault; When K switch 2 connects non-fault mode B2, there is not fault 2 of K switch.
When K switch 1, the K2 of change-over circuit are connected respectively to non-fault mode B1, B2, the position of by-pass cock K3, can make and form dissimilar faults between dummycable core line test lead S and the analog electrical cable test earth terminal G: when K switch 3 connects simulation high resistive fault A3, form high resistive fault; When K switch 3 connects simulation flashover fault C3, form the flashover fault; When K switch 3 connects simulation short trouble D3, form low-resistance (short circuit) fault; When K switch 3 connects non-fault mode B3, there is not fault 3 of K switch.
When K switch 1, the K2 of change-over circuit are connected respectively to non-fault mode B1, B2, K switch 3 is connected to non-fault mode B3, can carry out the total length test to cable, K switch 1, K2, K3 are three switches, between line adopt concentric cable, S is a dummycable core line test lead, and G is analog electrical cable test earth terminal.
As shown in Figure 2:
Holding circuit F between dummycable core line test lead S and the analog electrical cable test earth terminal G; by hold-down nut 1 and 8 up and down, up and down mounting bracket 2 and 7, upper and lower contact 4 and 6 and upper and lower contact sheath 3 and 5 form; upper and lower contact 4, the 6 outer upper and lower contact sheaths 3,5 that are added with respectively; by mounting bracket 2,7 up and down; hold-down nut 1,8 is fixed together up and down, leaves the gap between the upper and lower contact 4,6.When test applies voltage above 25kV, holding circuit F work, the gap is breakdown automatically between the upper and lower contact 4,6, avoids cable and change-over circuit F to be broken down by high-voltage.
Dummycable mainly contains the concentric cable of three sections different lengths to be formed, the withstand voltage height of this concentric cable, in light weight, insulate, can reach the demand of simulating power cable fully.
The concrete operations step is: as need the fault that the cable near-end forms is tested, at first K switch 2, K3 are connected respectively to non-fault mode B2, B3, by-pass cock K1 is provided with fault type, when K switch 1 is connected to simulation high resistive fault A1, forms the cable high resistive fault at K switch 1 place; When K switch 1 is connected to simulation flashover fault C1, form cable flashover fault at K switch 1 place; When K switch 1 is connected to simulation short trouble D1, form cable low-resistance (short circuit) fault at K switch 1 place; When K switch 1 is connected to non-fault mode B1, be equivalent to earth fault not take place at the near-end cable.
In like manner, as need the fault that the cable intermediate ends forms is tested, at first K switch 1, K3 are connected respectively to non-fault mode B1, B3, by-pass cock K2 is provided with fault type, when K switch 2 is connected to simulation high resistive fault A2, form the cable high resistive fault at K switch 2 places; When K switch 2 is connected to simulation flashover fault C2, form cable flashover fault at K switch 2 places; When K switch 2 is connected to simulation short trouble D2, form cable low-resistance (short circuit) fault at K switch 2 places; When K switch 2 is connected to non-fault mode B2, is equivalent to this cable and earth fault does not take place at K switch 2 places.
As need the fault that the cable far-end forms is tested, at first K switch 1, K2 are connected respectively to non-fault mode B1, B2, by-pass cock K3 is provided with fault type, when K switch 3 is connected to simulation high resistive fault A3, forms the cable high resistive fault at K switch 3 places; When K switch 3 is connected to simulation flashover fault C3, form cable flashover fault at K switch 3 places; When K switch 3 is connected to simulation short trouble D3, form cable low-resistance (short circuit) fault at K switch 3 places; When K switch 3 is connected to non-fault mode B3, be equivalent to this cable earth fault does not take place, be intact phase.
When K switch 1, K2, the K3 of change-over circuit are connected respectively to non-fault mode B1, B2, B3, can carry out the total length test to cable.
During test, when test applies voltage above 25kV, the automatic disruptive discharge of the contactor gap among the holding circuit F.Avoid damaging the device internal components and the person is damaged.
Claims (7)
1, power cable fault test simulator is characterized in that: comprise change-over circuit, holding circuit, analog electrical cable, change-over circuit and holding circuit and be connected in dummycable core line test lead S and dummycable core line test earth terminal G between.
2, power cable fault test simulator according to claim 1, it is characterized in that: change-over circuit comprises K switch 1, simulation high resistive fault point A1, simulation non-fault point B1, simulation flashover trouble spot C1 and simulation short circuit trouble point D1, K switch 1 one termination dummycable core line test lead S, the other end respectively with simulation high resistive fault point A1, simulation non-fault point B1, simulation flashover trouble spot C1 links to each other with simulation short circuit trouble point D1, simulation high resistive fault point A1, simulation non-fault point B1, another termination dummycable core line test earth terminal of simulation flashover trouble spot C1 and simulation short circuit trouble point D1 G.
3, power cable fault test simulator according to claim 2, it is characterized in that: change-over circuit divides three the tunnel, comprises simulation near terminal fault point, simulation far-end trouble spot and simulation intermediate ends trouble spot respectively.
4, power cable fault test simulator according to claim 3, it is characterized in that: No. three change-over circuits comprise 3 switch K1, K2, K3, simulate near terminal fault point A1, B1, C1, D1 for 4, simulate intermediate ends trouble spot A2, B2, C2, D2 for 4, simulate far-end trouble spot A3, B3, C3, D3 for 4.
5, power cable fault test simulator according to claim 2 is characterized in that: change-over circuit is two-way or multichannel.
6, power cable fault test simulator according to claim 1; it is characterized in that: holding circuit F comprises up and down hold-down nut (1,8), mounting bracket (2,7), upper and lower contact (4,6) and upper and lower contact sheath (3,5) up and down; the outer upper and lower contact sheath (3,5) that is added with respectively of upper and lower contact (4,6); by mounting bracket (2,7) up and down; hold-down nut (1,8) is fixed together up and down, leaves test breakdown voltage rating protection gap between the upper and lower contact (4,6).
7, power cable fault test simulator according to claim 6 is characterized in that: the test breakdown voltage rating is 25kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200234441U CN201402539Y (en) | 2009-03-19 | 2009-03-19 | Simulating device for electrical cable fault test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200234441U CN201402539Y (en) | 2009-03-19 | 2009-03-19 | Simulating device for electrical cable fault test |
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| Publication Number | Publication Date |
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| CN201402539Y true CN201402539Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200234441U Expired - Fee Related CN201402539Y (en) | 2009-03-19 | 2009-03-19 | Simulating device for electrical cable fault test |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207533A (en) * | 2011-04-12 | 2011-10-05 | 陕西化建工程有限责任公司 | Method for searching fault of power cable |
| CN103531059A (en) * | 2013-09-10 | 2014-01-22 | 国家电网公司 | Teaching tool for testing faults of power cable |
| CN103617754A (en) * | 2013-08-30 | 2014-03-05 | 国家电网公司 | Fault simulation and test simulation system for power cables |
| CN104914391A (en) * | 2015-05-05 | 2015-09-16 | 国家电网公司 | Distribution network single-phase grounding fault simulation and positioning performance test platform and method |
| CN105070158A (en) * | 2015-07-30 | 2015-11-18 | 国家电网公司 | Cable fault analogue simulation system |
| CN107818720A (en) * | 2017-10-17 | 2018-03-20 | 国网湖南省电力公司 | A kind of experiment porch and method for being used to simulate power cable fire |
| CN108198481A (en) * | 2018-02-07 | 2018-06-22 | 宁波送变电建设有限公司 | A kind of intelligent cable failure simulation device |
| CN110706568A (en) * | 2019-10-31 | 2020-01-17 | 广州供电局有限公司 | Cable fault simulation device and system |
| CN110749805A (en) * | 2019-09-18 | 2020-02-04 | 浙江大学 | Simulation experiment device, simulation experiment system and simulation experiment method for flashover discharge of submarine cable |
| CN111398850A (en) * | 2020-03-30 | 2020-07-10 | 广东电网有限责任公司 | Fault point simulation device and method designed according to discharge characteristics of power cable fault point |
| CN111781535A (en) * | 2020-06-15 | 2020-10-16 | 广东电网有限责任公司 | Cable outer protective layer fault positioning training device and using method thereof |
| CN111983378A (en) * | 2020-07-24 | 2020-11-24 | 杭州群特电气有限公司 | Cable fault positioning simulation system |
| CN112289117A (en) * | 2020-11-12 | 2021-01-29 | 深圳供电局有限公司 | Cable fault simulation system based on LoRa communication technology |
| CN112611995A (en) * | 2020-11-23 | 2021-04-06 | 深圳供电局有限公司 | Testing device for AC/DC trial delivery instrument |
| CN112684378A (en) * | 2020-12-14 | 2021-04-20 | 深圳供电局有限公司 | Three-core system cable fault simulation device |
-
2009
- 2009-03-19 CN CN2009200234441U patent/CN201402539Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207533A (en) * | 2011-04-12 | 2011-10-05 | 陕西化建工程有限责任公司 | Method for searching fault of power cable |
| CN103617754A (en) * | 2013-08-30 | 2014-03-05 | 国家电网公司 | Fault simulation and test simulation system for power cables |
| CN103617754B (en) * | 2013-08-30 | 2015-11-18 | 国家电网公司 | Power cable fault simulation test analogue system |
| CN103531059A (en) * | 2013-09-10 | 2014-01-22 | 国家电网公司 | Teaching tool for testing faults of power cable |
| CN104914391A (en) * | 2015-05-05 | 2015-09-16 | 国家电网公司 | Distribution network single-phase grounding fault simulation and positioning performance test platform and method |
| CN104914391B (en) * | 2015-05-05 | 2017-09-26 | 国家电网公司 | A kind of one-phase earthing failure in electric distribution network simulation and positioning performance test platform and method |
| CN105070158A (en) * | 2015-07-30 | 2015-11-18 | 国家电网公司 | Cable fault analogue simulation system |
| CN105070158B (en) * | 2015-07-30 | 2018-05-22 | 国家电网公司 | Cable fault analogue simulation system |
| CN107818720A (en) * | 2017-10-17 | 2018-03-20 | 国网湖南省电力公司 | A kind of experiment porch and method for being used to simulate power cable fire |
| CN108198481A (en) * | 2018-02-07 | 2018-06-22 | 宁波送变电建设有限公司 | A kind of intelligent cable failure simulation device |
| CN110749805B (en) * | 2019-09-18 | 2021-01-29 | 浙江大学 | Simulation experiment device, simulation experiment system and simulation experiment method for flashover discharge of submarine cable |
| CN110749805A (en) * | 2019-09-18 | 2020-02-04 | 浙江大学 | Simulation experiment device, simulation experiment system and simulation experiment method for flashover discharge of submarine cable |
| CN110706568A (en) * | 2019-10-31 | 2020-01-17 | 广州供电局有限公司 | Cable fault simulation device and system |
| CN111398850A (en) * | 2020-03-30 | 2020-07-10 | 广东电网有限责任公司 | Fault point simulation device and method designed according to discharge characteristics of power cable fault point |
| CN111781535A (en) * | 2020-06-15 | 2020-10-16 | 广东电网有限责任公司 | Cable outer protective layer fault positioning training device and using method thereof |
| CN111983378A (en) * | 2020-07-24 | 2020-11-24 | 杭州群特电气有限公司 | Cable fault positioning simulation system |
| CN111983378B (en) * | 2020-07-24 | 2023-04-07 | 杭州群特电气有限公司 | Cable fault positioning simulation system |
| CN112289117A (en) * | 2020-11-12 | 2021-01-29 | 深圳供电局有限公司 | Cable fault simulation system based on LoRa communication technology |
| CN112611995A (en) * | 2020-11-23 | 2021-04-06 | 深圳供电局有限公司 | Testing device for AC/DC trial delivery instrument |
| CN112684378A (en) * | 2020-12-14 | 2021-04-20 | 深圳供电局有限公司 | Three-core system cable fault simulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20140319 |