CN206638768U - A kind of 10kV distribution network cables line fault positions analogue means - Google Patents
A kind of 10kV distribution network cables line fault positions analogue means Download PDFInfo
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- CN206638768U CN206638768U CN201621423534.6U CN201621423534U CN206638768U CN 206638768 U CN206638768 U CN 206638768U CN 201621423534 U CN201621423534 U CN 201621423534U CN 206638768 U CN206638768 U CN 206638768U
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Abstract
The utility model discloses a kind of 10kV distribution network cables line fault to position analogue means, the system power supply is electrical connected with adjustable transformer, adjustable transformer and analog loop network cabinet B are electrical connected, analog loop network cabinet B both sides are respectively arranged with analog loop network cabinet A and analog loop network cabinet C, it is provided with analog loop network cabinet B, analog loop network cabinet A and analog loop network cabinet C and switch and HF current transformer is electronically activated, HF current transformer is electrically connected with online fault locator, and online fault locator is electrically connected with data processing centre.This 10kV distribution network cables line fault positions analogue means, can be produced and system noise characteristics identical interference signal on actual track in the operating voltage of simulation test device using exchange variable load；When switch is electronically activated, a short circuit fault signal can be truly produced, down pulse current wave can be propagated along coaxial cable, and all measuring points in final detected scope gather and carry out localization of fault.
Description
Technical field
Cable line fault field of locating technology is the utility model is related to, specifically a kind of 10kV distribution network cables line fault
Position analogue means.
Background technology
1st, the importance of 10kV distribution network cables line fault positioning：
With the fast development of urban construction, city 10kV-35kV distribution systems and number of cables are continuously increased, and lay road
Footpath is intricate.Once generation line fault, how quickly abnormal signal to be differentiated and weight is turned into localization of fault
Want problem.It is general that faulty line is first determined according to switch motion situation (tripping operation) for handling failure, then using electric bridge or arteries and veins
Rush voltage echo-ranging sonar and find and confirm trouble point.The cable termination that assignment test operation must untie the circuit can just enter
OK, due to the live interim limitation done experiment and be frequently run onto condition, as a result whole process spends the time longer, and manpower thing
Power input is bigger.Requirement more and more higher of the user to powered stable, the time requirement for the repairing that has a power failure is more few better, and this is required
Power system is quickly and accurately found abort situation, fixed a breakdown rapidly after failure generation, it is ensured that power system security is transported
OK, power supply reliability, stability are improved, by minimization of loss.
2nd, the effect of 10kV distribution network cables line fault positioning simulation test device：
A kind of online fault locator come is had been developed at this stage, can be sent out failure when failure occurs
Raw position automatically computes, and problem is that the probability of happening of this kind of failure is very low, it is difficult to examine this kind of failure to determine in actual track
The performance and precision of position device, it is therefore desirable to, research and develop a kind of 10kV distribution network cables line fault positioning simulated test dress
Put, to verify a kind of performance and precision of online fault locator.
3rd, the limitation of prior art cable line fault test model：
Prior art cable line fault test model mainly has two kinds, and one kind is cable fault test teaching mode, main
To be made up of notebook computer, failure tester, communication coaxial cable, rheostat, by the size of standardsizing rheostat resistance come
Various short circuits, open circuit, low resistance faults are simulated, observe the waveform change of failure tester.Another kind is uncharged cable run
Fault detect simulation test device, mainly by dummycable terminal, be directly grounded case, interconnection transposition case, in dummycable indirectly
Head, coaxial cable, simulated failure signal generator and fault location test system composition, by changing signal decanting point position
To simulate the training that each position produces failure and carries out method of testing.
A：For cable fault test model, this teaching mode can only under dummycable circuit different conditions, cable therefore
Hinder the change of waveform, and waveform processing and display can only be completed on computers.Lack the analysis and research to fault characteristic signals.
B：Simulation test device is detected for cable line fault, although this analog system device can be uncharged
In the case of carry out fault testing method training, but be the absence of simulate real line on exchange variable load caused by noise,
Importantly, the analog system device is simulation more than 110kV voltage levels, connect especially with interconnection transposition case and directly
The cable run of ground case, the actual conditions of ring main unit multiloop branch in 10kV distribution network cable circuits can not be simulated.
Generally speaking, existing cable line fault test simulation experimental rig function is relatively simple, it is impossible to which simulation is true
The state of exchange variable load in circuit be present, it is impossible to the state of more times cable outlets in analog loop network cabinet be present, can not produce
A raw real fault-signal.Online fault locator can not be verified under real simulated test state
Precision and performance.In such a situa-tion, the training of 10kV distribution network cable circuitry fault detection methods is carried out, and is difficult to receive
Expected effect.
Utility model content
The purpose of this utility model is to provide a kind of 10kV distribution network cables line fault positioning analogue means, to verify one
The performance and precision of the online fault locator of kind.Used more times with analog loop network cabinet in analog loop network cabinet cable run
The structure of branch road；Can be with system noise caused by exchange variable load during real simulation actual user's electricity consumption；By electricity
Sub- trigger switch, on the premise of power source trip is not caused, produce a real fault-signal the advantages of；To solve the above-mentioned back of the body
It is proposed that function is relatively simple in scape technology, it is impossible to simulate the state that exchange variable load in real line be present, it is impossible to analog loop
The state of more times cable outlets present in net cabinet, a problem of real fault-signal can not be produced.Realize
To the evaluation of the checking test and performance of fault locator on the dummycable circuit of safety.
Compared with prior art, the utility model beneficial effect：
1st, it can be positioned in a kind of 10kV distribution network cables line fault and carry out online fault location system on analogue means
The function of system and the checking test of precision；
2nd, analog loop network cabinet uses the structure of more times branch roads in analog loop network cabinet cable run；
3rd, can be with system noise caused by exchange variable load during real simulation actual user's electricity consumption；
4th, by switch is electronically activated, on the premise of power source trip is not caused, a real fault-signal is produced；
5th, the training of FLT and the culture of personnel can be carried out by the system.
To achieve the above object, the utility model provides following technical scheme：
A kind of 10kV distribution network cables line fault positions analogue means, including system power supply, adjustable transformer, short-circuit protection
Device, communication coaxial cable, analog loop network cabinet A, analog loop network cabinet B, analog loop network cabinet C, transformer, running lamp variable load, open
Brightness device variable load, incandescent lamp firm demand, switch, HF current transformer, online fault locator is electronically activated
And data processing centre, the system power supply are electrical connected with adjustable transformer, adjustable transformer is by short-circuit protector and leads to
Letter coaxial cable and analog loop network cabinet B are electrical connected；The analog loop network cabinet B both sides are respectively arranged with analog loop network cabinet A and mould
Intend ring main unit C, pass through between analog loop network cabinet A and analog loop network cabinet B and between analog loop network cabinet B and analog loop network cabinet C
Communication coaxial cable is connected, and running lamp variation is also mounted on analog loop network cabinet B, analog loop network cabinet A and analog loop network cabinet C
It is equal on load, starter variable load and incandescent lamp firm demand, analog loop network cabinet A, analog loop network cabinet B and analog loop network cabinet C
Be provided be electronically activated switch and HF current transformer, HF current transformer electrically connect with online fault locator
Connect, online fault locator is electrically connected with data processing centre.
As further program of the utility model：The analog loop network cabinet A and analog loop network cabinet B communication coaxial cable
Length be 400m, the communication coaxial cable length between analog loop network cabinet B and analog loop network cabinet C is 600m.
As further program of the utility model：It is described that switch, HF current transformer and online is electronically activated
The quantity of fault locator is three.
As further program of the utility model：Described be electronically activated on switch is provided with two contacts.
As further program of the utility model：Analog loop network cabinet B, analog loop network cabinet A and the analog loop network cabinet C with
The connection end of running lamp variable load, starter variable load and incandescent lamp firm demand is provided with transformer, analog loop network cabinet
B, analog loop network cabinet A and analog loop network cabinet C uses the structure of multiloop cable run.
Compared with prior art, the utility model beneficial effect：
This 10kV distribution network cables line fault positions analogue means, and switch, analog loop network cabinet, stream is electronically activated by setting
Water lamp variable load, starter variable load HF current transformer, online fault locator and data processing centre,
The 10kV distribution network cables line fault is enabled to position analogue means in the operating voltage of simulation test device using exchange
Variable load produces and system noise characteristics identical interference signal on actual track；When switch is electronically activated, truly
A short circuit fault signal is produced, can be propagated in down pulse current wave caused by trouble point along coaxial cable, finally quilt
All measuring points in detection range gather and carry out localization of fault, and HF current transformer only needs a branch road installed therein
On, you can it is detected simultaneously by the fault-signal of each branch road in ring main unit.In addition, simulate 10kV under comparatively safe environment
Distribution network cable line condition, verify the performance and precision of online fault locator.Tester is in this environment at the scene
Under, carry out effectively and the localization of fault test training or teaching of safety.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is analog loop network cabinet of the present utility model and switch structure diagram is electronically activated.
Fig. 3 is the structural representation of embodiment 2 of the present utility model.
In figure：1- system power supplies；2- adjustable transformers；3- short-circuit protectors；4- communication coaxial cables；5- analog loop network cabinets
B；6- analog loop network cabinets A；7- analog loop network cabinets C；8- transformers；9- running lamp variable loads；10- starter variable loads；
11- incandescent lamp firm demands；Switch is electronically activated in 12-；13- HF current transformers；Fault locator online 14-；
15- data processing centres, 16- simulated failure signal generators.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment 1
Referring to Fig. 1-2, in the utility model embodiment, a kind of 10kV distribution network cables line fault positions analogue means,
Including system power supply 1, adjustable transformer 2, short-circuit protector 3, communication coaxial cable 4, analog loop network cabinet A6, analog loop network cabinet
B5, analog loop network cabinet C7, transformer 8, running lamp variable load 9, starter variable load 10, incandescent lamp firm demand 11, electricity
Sub- trigger switch 12, HF current transformer 13, online fault locator 14 and data processing centre 15, system power supply
1 is electrical connected with adjustable transformer 2, and for system power supply 1 by being exported after the pressure regulation of adjustable transformer 2, adjustable transformer 2 passes through short circuit
Protector 3 and communication coaxial cable 4 and analog loop network cabinet B5 are electrical connected；Analog loop network cabinet B5 both sides are respectively arranged with analog loop
Net cabinet A6 and analog loop network cabinet C7, analog loop network cabinet A6 and analog loop network cabinet B5 are connected by 400m communication coaxial cables 4, mould
Intend ring main unit B5 be connected with analog loop network cabinet C7 by 600m communication coaxial cables 4, analog loop network cabinet B5, analog loop network cabinet A6 and
Analog loop network cabinet C7 has more times branched structures, accesses running lamp variable load 9 by transformer 8 respectively, starter changes and born
Lotus 10 and incandescent lamp firm demand 11, are electronically activated switch 12 and HF current transformer 13 is separately mounted to analog loop network cabinet
On A6, analog loop network cabinet B5 and analog loop network cabinet C7, it is electronically activated on switch 12 and is provided with two contacts, switch is electronically activated
12 two contacts are clipped in the analog loop network cabinet conductor both sides for needing to carry out short-circuit fault test respectively, touch-switch, produce one
Individual up to tens of amperes of down pulse ripple, HF current transformer 13 are electrically connected with online fault locator 14,
Online fault locator 14 is electrically connected with data processing centre 15, the failure that HF current transformer 13 will collect
Signal reaches online fault locator, is finally unifiedly calculated and by data processing centre 15 to showing that trouble point is specific.
In summary, the electric current changed when being worked by running lamp or starter has manufactured interference signal to detecting system,
The 10kV distribution network cables line fault is enabled to position analogue means in the operating voltage of simulation test device using exchange
Variable load produces and system noise characteristics identical interference signal on actual track；When the work of switch 12 is electronically activated, truly
Ground produces a short circuit fault signal, can be propagated in down pulse current wave caused by trouble point along coaxial cable, finally
All measuring points being detected in scope gather and carry out localization of fault, one time installed therein of 13 need of HF current transformer
On branch road, you can be detected simultaneously by the fault-signal of each branch road in ring main unit.
Embodiment 2
The main technical schemes of the present embodiment are same as Example 1, in the present embodiment unaccounted feature, using implementation
Explanation in example 1, is no longer repeated herein.The present embodiment and the difference of embodiment 1 are：
Expanded as shown in figure 3, embodiment 2 is embodiment 1 for the feature of FLT training, in simulated test
When device is not added with system voltage, all AC loads do not work, but they are still as analog loop network cabinet other branch roads
Mode is present, and the propagation to fault-signal plays influence.The present embodiment mainly uses simulated failure signal generator
To simulation test device Injection Signal, with reference to each measuring point waveform signal according to traveling wave speed computational methods, draw failed row
Ripple is in spread speed of the present utility model.It is equally possible that being distributed according to the signal frequency of each measuring point, fault traveling wave is drawn
Attenuation characteristic in the utility model.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (5)
1. a kind of 10kV distribution network cables line fault positions analogue means, including system power supply (1), adjustable transformer (2), short circuit
Protector (3), communication coaxial cable (4), analog loop network cabinet A (6), analog loop network cabinet B (5), analog loop network cabinet C (7), transformer
(8), running lamp variable load (9), starter variable load (10), incandescent lamp firm demand (11), be electronically activated switch (12),
HF current transformer (13), online fault locator (14) and data processing centre (15), it is characterised in that：It is described
System power supply (1) is electrical connected with adjustable transformer (2), and adjustable transformer (2) passes through short-circuit protector (3) and communication coaxial electricity
Cable (4) and analog loop network cabinet B (5) are electrical connected；Analog loop network cabinet B (5) both sides are respectively arranged with analog loop network cabinet A (6)
With analog loop network cabinet C (7), between analog loop network cabinet A (6) and analog loop network cabinet B (5) and analog loop network cabinet C (7) and analog loop
Connected between net cabinet B (5) by communication coaxial cable (4), analog loop network cabinet B (5), analog loop network cabinet A (6) and analog loop network
Running lamp variable load (9), starter variable load (10) and incandescent lamp firm demand (11) are mounted on cabinet C (7), it is described
On analog loop network cabinet A (6), analog loop network cabinet B (5) and analog loop network cabinet C (7) be also mounted on that switch (12) and height is electronically activated
Frequency current transformer (13), HF current transformer (13) are also electrically connected with online fault locator (14), online
The fault locator (14) of formula is electrically connected with data processing centre (15).
A kind of 2. 10kV distribution network cables line fault positioning analogue means according to claim 1, it is characterised in that：It is described
The length of analog loop network cabinet A (6) and analog loop network cabinet B (5) communication coaxial cable (4) be 400m, analog loop network cabinet B (5) and
Communication coaxial cable (4) length between analog loop network cabinet C (7) is 600m.
A kind of 3. 10kV distribution network cables line fault positioning analogue means according to claim 1, it is characterised in that：It is described
The quantity that switch (12), HF current transformer (13) and online fault locator (14) is electronically activated is three.
A kind of 4. 10kV distribution network cables line fault positioning analogue means according to claim 1, it is characterised in that：It is described
It is electronically activated on switch (12) and is provided with two contacts.
A kind of 5. 10kV distribution network cables line fault positioning analogue means according to claim 1, it is characterised in that：It is described
Analog loop network cabinet B (5), analog loop network cabinet A (6) and analog loop network cabinet C (7) change negative with running lamp variable load (9), starter
The connection end of lotus (10) and incandescent lamp firm demand (11) is provided with transformer (8), and analog loop network cabinet B (5), analog loop network cabinet
A (6) and analog loop network cabinet C (7) uses the structure of multiloop cable run.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621423534.6U CN206638768U (en) | 2016-12-22 | 2016-12-22 | A kind of 10kV distribution network cables line fault positions analogue means |
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| CN201621423534.6U CN206638768U (en) | 2016-12-22 | 2016-12-22 | A kind of 10kV distribution network cables line fault positions analogue means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707104A (en) * | 2016-12-22 | 2017-05-24 | 广州智丰电气科技有限公司 | 10kV distribution network cable line fault location simulation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707104A (en) * | 2016-12-22 | 2017-05-24 | 广州智丰电气科技有限公司 | 10kV distribution network cable line fault location simulation device |
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