CN110297139A - A kind of rail vehicle net side failure point detection device and method - Google Patents
A kind of rail vehicle net side failure point detection device and method Download PDFInfo
- Publication number
- CN110297139A CN110297139A CN201910557248.0A CN201910557248A CN110297139A CN 110297139 A CN110297139 A CN 110297139A CN 201910557248 A CN201910557248 A CN 201910557248A CN 110297139 A CN110297139 A CN 110297139A
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- Prior art keywords
- current transmit
- contact line
- circuit
- overhead contact
- threshold value
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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
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
Abstract
A kind of rail vehicle net side failure point detection device of the present invention and method, including two groups of circuit on side of overhead contact line, every group of circuit on side of overhead contact line includes pantograph, breaker, transformer, disconnecting switch, Current Transmit 1, Current Transmit 2, Current Transmit 3, the pantograph, Current Transmit 1, breaker, disconnecting switch, Current Transmit 2 are sequentially connected by high voltage bus, and the transformer, Current Transmit 3 are sequentially connected in parallel access between the breaker and disconnecting switch.The present invention, in the case where not adding hardware cost, realizes the fast and effective judgement of fault point, plays the purpose of cost efficiency by being arranged current transformer after disconnecting switch.
Description
Technical field
The present invention relates to a kind of detection device and method, in particular to a kind of rail vehicle net side failure point detection device and
Method.
Background technique
Network pressure that EMU high voltage supply system receives high-pressure system by the way of series current mutual inductor and
Output electric current is monitored, as shown in Figure 1, at present in entire high tension loop respectively at pantograph into being arranged at high-voltage equipment box
CT2 current transformer is arranged in CT1 current transformer, vacuum circuit breaker to position resolver, and it is mutual that CT3 electric current is arranged in transformer end
Sensor.When due to breaking down, the CT2 current transformer of two units can not judge in respective high-voltage equipment box
Grounding point, which is derived from equipment ground in the high-voltage equipment box of this unit, leads to net side over current fault or his unit high-tension apparatus
Box equipment ground connection.This kind of problem will lead to failure erroneous judgement, emergency operation mistake so as to cause more serious ground connection over-heated fault.
It can be detected to solve this problem by the way that current transformer is arranged behind each component, but the program will increase system
Cause this.
Summary of the invention
The main object of the present invention be for solve in the prior art the technical issues of, provide it is a kind of reduce cost, realize therefore
Hinder the rail vehicle net side failure point detection device quickly and effectively judged.
Another main purpose of the invention is to provide a kind of rail vehicle net side trouble point checking method.
To achieve the above object, the technical scheme is that
A kind of rail vehicle net side failure point detection device, including two groups of circuit on side of overhead contact line, every group of circuit on side of overhead contact line includes by electricity
Bow, breaker, transformer, disconnecting switch, Current Transmit 1, Current Transmit 2, Current Transmit 3, it is described by electricity
Bow, Current Transmit 1, breaker, disconnecting switch, Current Transmit 2 are sequentially connected by high voltage bus, the transformation
Device, Current Transmit 3 are sequentially connected in parallel access between the breaker and disconnecting switch.
Further, the breaker passes through ground switch earthing.
Further, further include roof arrester, the roof arrester access the pantograph and Current Transmit 1 it
Between.
Further, a disconnecting switch arrester in parallel.
Another technical solution of the invention is:
A kind of rail vehicle net side trouble point checking method using above-mentioned apparatus, includes the following steps:
Step 1, judges whether the Current Transmit 1 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net
Side overcurrent threshold value is then judged to that net side over current fault occurs；
Step 2, judges whether the Current Transmit 2 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net
Side overcurrent threshold value is then determined as that circuit on side of overhead contact line failure in non-rising bow side leads to net side over current fault, if being less than net side overcurrent threshold
Value is then determined as that circuit on side of overhead contact line failure in rising bow side leads to net side over current fault.
Further, increase a step after step 2, which is the Current Mutual Inductance for judging rising bow side circuit on side of overhead contact line
Whether device CT1 is equal with the sum of Current Transmit 2, Current Transmit 3, and whether Current Transmit 3 is greater than primary side
Overcurrent threshold value determines the transformer primary side overcurrent of rising bow side circuit on side of overhead contact line if being to be.
Further, judge in this step non-rising bow side circuit on side of overhead contact line Current Transmit 2 whether with current transformer
CT3 is equal, and whether Current Transmit 3 is greater than primary side overcurrent threshold value and determines non-rising bow side circuit on side of overhead contact line if being to be
Transformer primary side overcurrent.
Further, increase a step after step 2, which is the Current Mutual Inductance for judging rising bow side circuit on side of overhead contact line
Whether device CT1 is greater than primary side ground connection threshold value, and current transformer after subtracting Current Transmit 2 and Current Transmit 3
Whether CT1 is less than net side overcurrent threshold value, if being to be, determines that rising bow side circuit on side of overhead contact line primary side is grounded.
Further, judge that the Current Transmit 2 of non-rising bow side circuit on side of overhead contact line subtracts Current Transmit 3 in this step
Whether it is greater than primary side later and is grounded threshold value, be grounded threshold value if more than primary side, then determines non-rising bow side circuit on side of overhead contact line primary side ground connection.
To sum up content, a kind of rail vehicle net side failure point detection device of the present invention and method, by by electric current
Mutual inductor is arranged after disconnecting switch, in the case where not adding hardware cost, realizes the fast and effective judgement of fault point,
Play the purpose of cost efficiency.
Detailed description of the invention
Fig. 1 is prior art construction schematic diagram；
Fig. 2 is schematic structural view of the invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Fig. 2, a kind of rail vehicle net side failure point detection device of the present invention, including two groups of net side electricity
Road, every group of circuit on side of overhead contact line include pantograph, breaker, transformer, disconnecting switch, Current Transmit 1 (CT1 '), Current Mutual Inductance
Device CT2 (CT2 '), Current Transmit 3 (CT3 '), pantograph, Current Transmit 1 (CT1 '), breaker, disconnecting switch, electricity
Current transformer CT2 (CT2 ') is sequentially connected by high voltage bus, and transformer, Current Transmit 3 (CT3 ') are sequentially connected parallel connection
It accesses between breaker and disconnecting switch.First group of circuit on side of overhead contact line and second group of circuit on side of overhead contact line pass through roof high voltage bus and high pressure
Flexible cable connection.Breaker further includes roof arrester by ground switch earthing, and roof arrester accesses pantograph and electricity
Between current transformer CT1, disconnecting switch one arrester of parallel connection.
By by inside high-voltage equipment box in the prior art Current Transmit 2 (CT2 ') setting to disconnecting switch it
Afterwards, pass through the logic between Current Transmit 1 (CT1 '), Current Transmit 2 (CT2 '), Current Transmit 3 (CT3 ')
Relationship judgement is this group of cell failure or he organizes cell failure, can realize fault point in the case where not adding hardware cost
Fast and effective judgement.
A kind of rail vehicle net side trouble point checking method using above-mentioned apparatus, includes the following steps:
Step 1, judges whether the Current Transmit 1 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net
Side overcurrent threshold value is then judged to that net side over current fault occurs；
Step 2, judges whether the Current Transmit 2 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net
Side overcurrent threshold value is then determined as that circuit on side of overhead contact line failure in non-rising bow side leads to net side over current fault, if being less than net side overcurrent threshold
Value is then determined as that circuit on side of overhead contact line failure in rising bow side leads to net side over current fault.
Net side over current fault, which is diagnosed, is obtaining current transformer numerical value by two traction convertors of pantograph lifting unit
After judged, for circuit on side of overhead contact line is rising bow unit on the left of Fig. 2 in the present embodiment, when the electric current of rising bow side circuit on side of overhead contact line
Mutual inductor CT1 is greater than when net side overcurrent threshold value, i.e. CT1 > xxA, then is judged to that net side over current fault occurs.Further judgement
The Current Transmit 2 of rising bow side circuit on side of overhead contact line whether be greater than net side overcurrent threshold value, i.e. CT2 > xxA or CT2 < xxA, if more than
Net side overcurrent threshold value then can be confirmed that exception occur for non-rising bow unit high voltage component or high voltage cable leads to net side over current fault,
Rising bow side unit high voltage component appearance exception is confirmed as if being less than net side overcurrent threshold value leads to net side over current fault.
Step 3, judge rising bow side circuit on side of overhead contact line Current Transmit 1 whether with Current Transmit 2, Current Mutual Inductance
The sum of device CT3 is equal, and whether Current Transmit 3 is greater than primary side overcurrent threshold value and determines rising bow side net side if being to be
The transformer primary side overcurrent of circuit.Judge non-rising bow side circuit on side of overhead contact line Current Transmit 2 whether with 3 phase of Current Transmit
Deng, and whether Current Transmit 3 is greater than primary side overcurrent threshold value and determines the change of non-rising bow side circuit on side of overhead contact line if being to be
Depressor primary side overcurrent.
In the present embodiment by taking circuit on side of overhead contact line is rising bow unit on the left of Fig. 2 as an example, when the electric current of rising bow side circuit on side of overhead contact line is mutual
Sensor CT1 is equal to the sum of Current Transmit 2, Current Transmit 3, and Current Transmit 3 is greater than primary side overcurrent threshold value,
That is when CT1=CT2+CT3, CT3 > xxA, it was demonstrated that be the transformer primary side overcurrent of rising bow side circuit on side of overhead contact line.
When the Current Transmit 2 ' of non-rising bow side circuit on side of overhead contact line is equal to Current Transmit 3 ', and current transformer
CT3 ' is greater than primary side overcurrent threshold value, i.e. when CT2 '=CT3 ', CT3 > xxA, it was demonstrated that is the transformer primary of non-rising bow side circuit on side of overhead contact line
Side overcurrent.
Step 4 judges that the Current Transmit 1 of rising bow side circuit on side of overhead contact line subtracts Current Transmit 2 and current transformer
Whether it is greater than primary side after CT3 and is grounded threshold value, and whether Current Transmit 1 is less than net side overcurrent threshold value, if being to be,
Determine rising bow side circuit on side of overhead contact line primary side ground connection.Judge that the Current Transmit 2 of non-rising bow side circuit on side of overhead contact line subtracts current transformer
Whether it is greater than primary side after CT3 and is grounded threshold value, is grounded threshold value if more than primary side, then determines that non-rising bow side circuit on side of overhead contact line primary side connects
Ground.
In the present embodiment by taking circuit on side of overhead contact line is rising bow unit on the left of Fig. 2 as an example, when the electric current of rising bow side circuit on side of overhead contact line is mutual
Sensor CT1 is greater than primary side ground connection threshold value, and Current Transmit 1 after subtracting Current Transmit 2 and Current Transmit 3
Less than net side overcurrent threshold value, i.e. CT1-CT2-CT3 > xxA, when CT1 < xxA, it was demonstrated that circuit on side of overhead contact line primary side ground connection in rising bow side connects
Position includes rising bow side unit high voltage component.It is to arrange that Current Transmit 1, which is added, to be less than the condition of net side overcurrent threshold value
Except with rising bow side net side over current fault repeat.
It is greater than primary side after the Current Transmit 2 ' of non-rising bow side circuit on side of overhead contact line subtracts Current Transmit 3 ' to be grounded
When threshold value, i.e. CT2 '-CT3 ' > xxA, the rising bow side circuit on side of overhead contact line primary side ground connection that makes a clear distinction between right and wrong is proved indirectly from another angle, earthing position includes non-rising bow side
Unit high voltage component.
A kind of rail vehicle net side failure point detection device of the present invention and method, by the way that current transformer to be arranged
It is this cell failure or other cell failures according to the logical relation judgement between current transformer after disconnecting switch,
It can grounding point effectively at judgement.The present invention realizes the fast and effective judgement of fault point in the case where not adding hardware cost,
Play the purpose of cost efficiency.
As described above, the plan content in conjunction with given by attached drawing, can derive similar technical solution.But it is all not take off
Content from technical solution of the present invention, according to the technical essence of the invention it is to the above embodiments it is any it is simple modification, etc.
With variation and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of rail vehicle net side failure point detection device, it is characterised in that: including two groups of circuit on side of overhead contact line, every group of circuit on side of overhead contact line
Including pantograph, breaker, transformer, disconnecting switch, Current Transmit 1, Current Transmit 2, Current Transmit 3,
The pantograph, Current Transmit 1, breaker, disconnecting switch, Current Transmit 2 are sequentially connected by high voltage bus, institute
State transformer, Current Transmit 3 is sequentially connected in parallel access between the breaker and disconnecting switch.
2. a kind of rail vehicle net side failure point detection device according to claim 1, it is characterised in that: the breaker
Pass through ground switch earthing.
3. a kind of rail vehicle net side failure point detection device according to claim 1, it is characterised in that: further include roof
Arrester, the roof arrester access between the pantograph and Current Transmit 1.
4. a kind of rail vehicle net side failure point detection device according to claim 1, it is characterised in that: described to keep apart
Close an arrester in parallel.
5. a kind of rail vehicle net side trouble point checking method using any one of Claims 1-4 described device, feature exist
In including the following steps:
Step 1, judges whether the Current Transmit 1 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net side mistake
Threshold value is flowed, then is judged to that net side over current fault occurs；
Step 2, judges whether the Current Transmit 2 of rising bow side circuit on side of overhead contact line is greater than net side overcurrent threshold value, if more than net side mistake
Threshold value is flowed, then is determined as that circuit on side of overhead contact line failure in non-rising bow side leads to net side over current fault, if being less than net side overcurrent threshold value,
It is determined as that circuit on side of overhead contact line failure in rising bow side leads to net side over current fault.
6. a kind of rail vehicle net side trouble point checking method according to claim 5, it is characterised in that: step 2 it
Afterwards increase a step, the step be judge rising bow side circuit on side of overhead contact line Current Transmit 1 whether with Current Transmit 2,
The sum of Current Transmit 3 is equal, and whether Current Transmit 3 is greater than primary side overcurrent threshold value and determines to rise if being to be
Bend the transformer primary side overcurrent of side circuit on side of overhead contact line.
7. a kind of rail vehicle net side trouble point checking method according to claim 6, it is characterised in that: in this step
Judge whether the Current Transmit 2 of non-rising bow side circuit on side of overhead contact line is equal with Current Transmit 3, and Current Transmit 3
Whether it is greater than primary side overcurrent threshold value and determines the transformer primary side overcurrent of non-rising bow side circuit on side of overhead contact line if being to be.
8. a kind of rail vehicle net side trouble point checking method according to claim 5, it is characterised in that: step 2 it
Increase a step afterwards, which is to judge that the Current Transmit 1 of rising bow side circuit on side of overhead contact line subtracts Current Transmit 2 and electricity
Whether it is greater than primary side after current transformer CT3 and is grounded threshold value, and whether Current Transmit 1 is less than net side overcurrent threshold value, if
It is to be, then determines that rising bow side circuit on side of overhead contact line primary side is grounded.
9. a kind of rail vehicle net side trouble point checking method according to claim 8, it is characterised in that: in this step
Judge whether be greater than primary side ground connection threshold value after the Current Transmit 2 of non-rising bow side circuit on side of overhead contact line subtracts Current Transmit 3,
It is grounded threshold value if more than primary side, then determines non-rising bow side circuit on side of overhead contact line primary side ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557248.0A CN110297139B (en) | 2019-06-25 | 2019-06-25 | Rail vehicle network side fault point detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557248.0A CN110297139B (en) | 2019-06-25 | 2019-06-25 | Rail vehicle network side fault point detection device and method |
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| CN110297139A true CN110297139A (en) | 2019-10-01 |
| CN110297139B CN110297139B (en) | 2021-11-16 |
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| CN201910557248.0A Active CN110297139B (en) | 2019-06-25 | 2019-06-25 | Rail vehicle network side fault point detection device and method |
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Cited By (2)
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| CN111030067A (en) * | 2019-12-26 | 2020-04-17 | 株洲中车时代半导体有限公司 | Intelligent protection device for preventing contact net of electric locomotive from being blown |
| CN111638471A (en) * | 2020-07-17 | 2020-09-08 | 中车青岛四方机车车辆股份有限公司 | Fault judgment method and device and train |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030067A (en) * | 2019-12-26 | 2020-04-17 | 株洲中车时代半导体有限公司 | Intelligent protection device for preventing contact net of electric locomotive from being blown |
| CN111638471A (en) * | 2020-07-17 | 2020-09-08 | 中车青岛四方机车车辆股份有限公司 | Fault judgment method and device and train |
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| Publication number | Publication date |
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| CN110297139B (en) | 2021-11-16 |
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