CN206470357U - Wind power generating set and its cable fault detecting device - Google Patents
Wind power generating set and its cable fault detecting device Download PDFInfo
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- CN206470357U CN206470357U CN201720176011.4U CN201720176011U CN206470357U CN 206470357 U CN206470357 U CN 206470357U CN 201720176011 U CN201720176011 U CN 201720176011U CN 206470357 U CN206470357 U CN 206470357U
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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
Abstract
The utility model provides a kind of wind power generating set and its cable fault detecting device.In cable fault detecting device, wind power generating set includes stator winding, each phase in A phases, B phases and the C phases of stator winding is connected at least two cables being connected in parallel, the cable clamping of the A phases of the same winding of every three connections, B phases and C phases is a bundle, cable fault detecting device includes PLC and multiple first current transformers, wherein, at least partly the first current transformer is arranged on different bundles and out of phase cable, and the first current transformer is communicated to connect with PLC respectively.Cable fault detecting device of the present utility model can be quick, accurately detects cable fault, and then cable fault can be excluded into the stage in the early stage, it is ensured that the reliability service of wind power generating set.
Description
Technical field
The utility model is related to field of power transmission, more particularly to a kind of wind power generating set and its Cable fault examination dress
Put.
Background technology
The capacity of current wind power generating set complete machine is increasing, and maximum capacity unit has reached 8 megawatts, tower height
Close to 200 meters.It is remote super general to the cable connection length of current transformer from generator for the wind power generating set of this oversize
The length of logical wind power generating set, the technique using whole traditional cable defence line is not suitable for this high tower, Large Copacity
Wind power generating set.
The need for adapting to high tower, the power transmission of the wind power generating set of Large Copacity, its cable used is used
Two docking or multistage cable segmentation butt-joint process.Specifically, as shown in fig. 1, the vertical section of cable 1 passes through cable cleat 2
On the inwall for being clamped in tower 3, the butted part of cable is connected using connecting tube 4, it is preferred to use cold pressing copper connecting tube connection.
Cable 1 is had the following disadvantages by the way of the connection of connecting tube 4：The connecting tube quality that docking location is used does not conform to
Lattice, workmen is off one's guard, technical experience is not enough or construction appliance failure etc., can all cause the link position electric conductivity of cable 1
Can be unqualified, and cable intermediate joint caloric value can be caused big and temperature height, electricity at connecting tube 4 and the two ends of connecting tube 4 will be damaged
The insulation of cable, or even burn out connecting tube 4 or blow joint cable.
Further, in order to ensure enough current-carrying capacities, the cable of wind power generating set is generally using more with phase with winding
The mode of root cable and downlink connection is set.In order to reduce vortes interference, generally by three cables of A, B, C three-phase of same winding
It is a bundle by cable cleat folder, same winding is generally connected with two bundles of parallel connection or the cable of more bundles.If wherein a bundle
The docking location of a certain cable in cable is fused due to excessively stream, excess temperature, because other bundle shunt cables are also normally being connected,
Unit also will not disorderly closedown, be still up, but can increase same winding with phase other bundle cables electric current.
Lack in the prior art effectively can carry out the means of fault detect to the cable of generator to converter cabinet interlude,
Quality examination and examination can not be carried out after cable is connected by connecting tube, and also will not after failure at cable butting
Shut down, and then the insulating barrier aging of other cables can be accelerated, cause the fusing of other cables or burn other electrical equipment inside unit,
And then the normal operation of wind power generating set is influenceed, or even influence the personal safety of operating personnel.
Utility model content
Embodiment of the present utility model provides a kind of cable fault detecting device, to solve many to wind power generating set
The problem of cable carries out effective fault detect.
To reach above-mentioned purpose, embodiment of the present utility model is adopted the following technical scheme that：
On the one hand the utility model embodiment provides a kind of cable fault detecting device of wind power generating set, wind-power electricity generation
Unit includes stator winding, and each phase in A phases, B phases and the C phases of stator winding is connected at least two and is connected in parallel
Cable, the cable clamping of the A phases of the same winding of every three connections, B phases and C phases is a bundle, and cable fault detecting device includes PLC
Controller and multiple first current transformers, wherein, at least partly the first current transformer is arranged on different bundles and out of phase
On cable, the first current transformer is communicated to connect with PLC respectively.
Alternatively, stator winding is one group, and each phase in A phases, B phases and the C phases of stator winding is connected to two
The cable being connected in parallel；Cable is divided into two bundles；First current transformer is three, wherein, two the first current transformers are set
On the cable of A phases, B phases in a bundle cable and any two-phase in C phases, another first current transformer is arranged on another
Tie A phases in cable, on the cable of B phases and the third phase in C phases.
Alternatively, stator winding is one group, and each phase in A phases, B phases and the C phases of stator winding is connected to three
The cable being connected in parallel；Cable is divided into three bundles；First current transformer is three, wherein, three the first current transformer difference
It is arranged on the out of phase cable of different bundles.
Alternatively, stator winding is two groups, and each phase in A phases, B phases and the C phases of stator winding is connected to two
The cable being connected in parallel；Cable is divided into two bundles；First current transformer is six, and every three the first current transformers are fixed to one group
The cable of sub- winding is detected；Wherein, for a stator winding, two the first current transformers are arranged in a bundle cable
A phases, B phases and C phases in any two-phase cable on, another first current transformer be arranged on it is another bundle cable in A
On the cable of phase, B phases and the third phase in C phases.
Alternatively, stator winding is two groups, and each phase in A phases, B phases and the C phases of stator winding is connected to three
The cable being connected in parallel；First current transformer is six, cable of every three the first current transformers to one group of stator winding
Detected；Wherein, for a stator winding, three the first current transformers are separately positioned on the out of phase electricity of different bundles
On cable.
Alternatively, in addition to PLC the first analog to digital conversion circuit communicated to connect, the first current transformer difference
It is connected with the first analog to digital conversion circuit.
Alternatively, in addition to the second current transformer, the second current transformer is arranged on the tower of wind power generating set
On ground wire, the second current transformer is communicated to connect with PLC.
Alternatively, in addition to PLC the second analog to digital conversion circuit communicated to connect, the second current transformer and
Two analog to digital conversion circuits are connected.
Alternatively, tower is ground wire grounded by many piece-root graftings, and the second current transformer is arranged on apart from wind power generating set
On the distance of main control cabinet most short ground wire.
On the other hand the utility model embodiment provides a kind of wind power generating set, is filled with foregoing Cable fault examination
Put.
The cable fault detecting device that the utility model embodiment is provided, by inciting somebody to action at least partly described first Current Mutual Inductance
Device is arranged on different bundles and out of phase cable, and the first current transformer is communicated to connect with PLC respectively, in nothing
Every cable of need is all set on the basis of current transformer, you can accurately detect and determine whether that cable breaks down, and
The report and processing of failure are carried out, the reliability and security of wind power generating set can be greatly improved, cable fault can be carried out
Timely detect and handle, the influence that run to wind power generating set of reduction cable fault, by Failure elimination stage, guarantor in the early stage
The operation safety of wind power generating set is hindered；The setting quantity of current transformer is reduced simultaneously, cost, reduction PLC controls is reduced
The data processing amount of device processed.
Further, the cable fault detecting device that the utility model embodiment is provided, can also be to the electric over the ground of complete machine
Stream is detected and Trouble Report, when the power cable for having fusing is overlapped in tower, is alarmed in time, it is ensured that under set tower drum
The personal safety of portion staff.
The wind power generating set that the utility model embodiment is provided, can realize the detection of cable fault with relatively low cost
And Trouble Report, with higher reliability and security.
Further, the wind power generating set that the utility model embodiment is provided, moreover it is possible to carried out to unit to earth-current
Detection and Trouble Report, also improve the security of wind power generating set.
Brief description of the drawings
Fig. 1 is arrangement schematic configuration diagram of the cable of embodiment one in the tower of wind power generating set；
When Fig. 2 is that wind-driven generator uses one group of winding, the cable fault detecting device of exemplary embodiment one is in cable
Upper arrangement；
When Fig. 3 is that wind-driven generator uses one group of winding, the cable fault detecting device of illustrated embodiment two is on cable
Arrangement；
When Fig. 4 is that wind-driven generator uses two groups of windings, the cable fault detecting device of illustrated embodiment three is on cable
Arrangement；
When Fig. 5 is that wind-driven generator uses two groups of windings, the cable fault detecting device of illustrated embodiment four is on cable
Arrangement；
Fig. 6 is the circuit connection diagram of the cable fault detecting device of the present embodiment；
Fig. 7 is the circuit connection diagram of another embodiment of the cable fault detecting device of the present embodiment.
Drawing reference numeral explanation：
1st, cable；2nd, cable cleat；3rd, tower；4th, connecting tube；11st, the first cable；12nd, the second cable；13rd, the 3rd electricity
Cable；14th, the 4th cable；15th, the 5th cable；16th, the 6th cable；17th, the 7th cable；18th, the 8th cable；19th, the 9th cable；
21st, the tenth cable；22nd, the 11st cable；23rd, the 12nd cable；24th, the 13rd cable；25th, the 14th cable；26th, the ten five
Cable；27th, the 16th cable；28th, the 17th cable；29th, the 18th cable；211st, the first fixture；212nd, the second fixture；213、
3rd fixture；221st, the 4th fixture；222nd, the 5th fixture；223rd, the 6th fixture；51st, the first current transformer；52nd, the second electric current
Transformer；61st, the first analog to digital conversion circuit；62nd, the second analog to digital conversion circuit；7th, PLC；100th, with the first stator winding
The cable of connection；200th, the cable being connected with the second stator winding.
Embodiment
The wind power generating set and its cable fault detecting device to the utility model embodiment are entered below in conjunction with the accompanying drawings
Row is described in detail.It is shaded to the cable that is provided with the first current transformer 51 to show differentiation in Fig. 2 into Fig. 5.
The present embodiment is related to a kind of cable fault detecting device of wind power generating set, wind power generating set include stator around
Group.Each phase in A phases, B phases and the C phases of stator winding is connected at least two cables being connected in parallel, every three companies
The cable clamping for connecing the A phases, B phases and C phases of same winding is a bundle.Wherein, the cable fault detecting device of the present embodiment includes
PLC 7 and multiple first current transformers 51, wherein, at least partly the first current transformer 51 be arranged on it is different bundle and
On out of phase cable, the first current transformer 51 is communicated to connect with PLC 7 respectively.
Specifically, the first current transformer 51 detects the running current of out of phase cable, and by out of phase cable
Running current value I is conveyed to PLC 7, and whether PLC 7 occurs event to cable according to the running current value detected
Barrier is judged, Trouble Report can be carried out in time if judging cable fault occur, to carry out the processing of failure.Failure judgement
Principle is mainly, when a certain cable in many shunt cables of the same phase of connecting stator winding is in joint appearance event
Barrier, for example disconnect etc., the running current of remaining cable in parallel with the cable abnormal can increase, and then can be by detecting cable
The anomalous variation of running current judge the cable fault of phase where it.
Alternatively, judge that a kind of mode whether cable breaks down is, detect the running current I of out of phase cable,
And the running current value I of out of phase cable mutually compares.If the running current value I of a certain cable and other cables fortune
The ratio of row current value I deviation exceedes predetermined scope, then can determine whether that the cable being connected for this breaks down；If all electricity
The running current value I of cable deviation within the scope of predetermined, then can determine whether that cable does not break down.The predetermined scope
It can be set according to actual situation, for example, it can be set to being between 8%-15% preferably 10%.
If for example, in threephase cable, the running current value I of two-phase cable is 300A, and the running current of another phase cable
Value I is 360A, and the ratio of deviation is (360-300)/300=20%, is now then judged as running current value I where 360A
The connection cable of phase breaks down.
Alternatively, judge that the another way whether cable breaks down is, PLC 7 generates electricity according to current wind
The operation power of unit is calculated the due current value of unit cable, obtains reference value IBenchmark, then by the first Current Mutual Inductance
The running current value I and reference value I for the out of phase cable that device 51 is detectedBenchmarkCompare, if the running current value of a certain phase cable
I and reference value IBenchmarkThe ratio of deviation exceed predetermined scope, then can determine whether that the cable being connected for this breaks down；If institute
There is the running current value I deviation of cable within the scope of predetermined, then can determine whether that cable does not break down.This is predetermined
Scope can be set according to actual situation.
For example, it can be set to between 8%-15%, preferably 10%.If for example, the benchmark calculated according to operation power meter
Value IBenchmarkFor 300A, and the running current value I of a certain phase cable is 360A, and the ratio of deviation is (360-300)/300=20%,
Now then it is judged as that the connection cable of running current value I phases where 360A breaks down.
Alternatively, cable fault can also be judged using the combination of both the above judgment mode, i.e. both the above
When at least one of mode is judged as cable fault, then it is assumed that cable breaks down.Concrete mode is no longer illustrated.
In addition, in the present embodiment, the first current transformer 51 is arranged on the cable of different bundles, without electric by first
Current transformer 51 is arranged on the cable of same a bundle, and main cause is the periphery that the first current transformer 51 is set in cable, will
Multiple first current transformers 51, which are arranged on, can increase the external diameter of cable bundle on same a bundle cable, be unfavorable for clamping cable
Operation.
In addition, the first current transformer 51 is arranged in different bundles and out of phase cable, it can reduce what cable was tied
While the influence of diameter, the detection to every phase cable is realized, and need not all set the first electric current mutual on every cable
Sensor 51, reduces the setting quantity of the first current transformer 51, reduces cost.
Alternatively, the first whole current transformers 51 is arranged on different bundles and out of phase cable.
The cable fault detecting device that the utility model embodiment is provided, by inciting somebody to action at least partly the first current transformer 51
It is arranged on different bundles and out of phase cable, and the first current transformer 51 is communicated to connect with PLC 7 respectively,
On the basis of without every cable, the first current transformer 51 is all set, you can accurately detect and determine whether that cable occurs
Failure, and the report and processing of failure are carried out, the reliability and security of wind power generating set can be greatly improved, can be to cable event
Barrier timely detect and handle, the influence that reduction cable fault is run to wind power generating set；The first electricity is reduced simultaneously
The setting quantity of current transformer 51, reduces cost, reduces the data processing amount of PLC 7.
Specifically, Fig. 2 shows the embodiment one of the cable fault detecting device of the present embodiment, wherein, stator winding
For one group, each phase in A phases, B phases and the C phases of stator winding is connected to two cables being connected in parallel；Cable is divided into
Two bundles；First current transformer 51 is three, wherein, two the first current transformers 51 are arranged on A phases in a bundle cable, B
On the cable of any two-phase mutually and in C phases, another first current transformer 51 is arranged on A phases, B phases in another bundle cable
On the cable of the third phase in C phases.
Specifically, as shown in Figure 2, the cable 100 being connected with the first stator winding has 6, wherein, the first cable 11
In parallel with the 4th cable 14 and connecting stator winding respectively A phases, the second cable 12 and the parallel connection of the 5th cable 15 are simultaneously connected respectively
The B phases of stator winding, the 3rd cable 13 and in parallel and connecting stator winding respectively the C phases of the 6th cable 16.Wherein, the first cable
11st, the second cable 12, the 3rd cable 13 are retained as the first bundle by the first fixture 211；4th cable 14, the 5th cable 15,
Six cables 16 are retained as the second bundle by the second fixture 212.
Two the first current transformers 51 are separately positioned on the first cable 11 and the second cable 12 of the first bundle, another
First current transformer 51 is arranged on the 6th cable 16 of the second bundle.But the set-up mode of the first current transformer 51 is not limited
In this.
By in this way, the cable fault detecting device of the present embodiment can respectively be carried out to the cable of A phases, B phases and C phases
Fault detect, and three the first current transformers 51 are arranged on two bundle cables, it is to avoid to the diameter of a bundle cable
Influence is excessive.Meanwhile, realize the fault detect of two bundle cables using three the first current transformers 51.
As a kind of mode of texturing, Fig. 3 shows the embodiment two of the cable fault detecting device of the present embodiment, its
In, stator winding is that each phase in one group, A phases, B phases and the C phases of stator winding is connected to three electricity being connected in parallel
Cable；Cable is divided into three bundles；First current transformer 51 is three, wherein, three the first current transformers 51 are separately positioned on not
On out of phase cable with bundle.
Specifically, as shown in Figure 3, the cable 100 being connected with the first stator winding has 9, wherein, the first cable
11st, the 4th cable 14 and the parallel connection of the 7th cable 17 and respectively the A phases of connecting stator winding, the second cable 12, the and of the 5th cable 15
The parallel connection of 8th cable 18 and respectively the B phases of connecting stator winding, the 3rd cable 13, the 6th cable 16 and the 9th cable 19 are in parallel simultaneously
The C phases of difference connecting stator winding.Wherein, the first cable 11, the second cable 12, the 3rd cable 13 are pressed from both sides by the first fixture 211
Hold as the first bundle；4th cable 14, the 5th cable 15, the 6th cable 16 are retained as the second bundle by the second fixture 212；7th electricity
Cable 17, the 8th cable 18, the 9th cable 19 are retained as the 3rd bundle by the 3rd fixture 213.
Three the first current transformers 51 are separately positioned on the 5th cable 15 of the first cable 11, second bundle of the first bundle,
And the 3rd bundle the 9th cable 19 on.But the set-up mode of current transformer is not limited to this.
By in this way, the cable fault detecting device of the present embodiment can respectively be carried out to the cable of A phases, B phases and C phases
Fault detect, and three the first current transformers 51 are arranged on three bundle cables, it is to avoid to the diameter of a bundle cable
Influence is excessive.Meanwhile, realize the fault detect of three bundle cables using three the first current transformers 51.
Embodiment one and two shows the different embodiments of the cable fault detecting device of one group of stator winding, still
The present embodiment is not limited to both the above embodiment.
As the mode of extension, the cable fault when wind power generating set is provided with two groups of stator winding is shown in Fig. 4
The embodiment three of detection means.
Specifically, stator winding is two groups, and each phase in A phases, B phases and the C phases of stator winding is connected to two
The cable being connected in parallel；Cable is divided into two bundles；First current transformer 51 is six, every three 51 pair one of the first current transformers
The cable of group stator winding is detected；Wherein, for a stator winding, two the first current transformers 51 are arranged on a bundle
On the cable of A phases, B phases in cable and any two-phase in C phases, another first current transformer 51 is arranged on another bundle electricity
A phases, B phases in cable and on the cable of the third phase in C phases.
Specifically, as shown in Figure 4, the cable 100 being connected with the first stator winding has 6, wherein, the first cable 11
It is connected with the parallel connection of the 4th cable 14 and respectively the A phases of the first stator winding, the second cable 12 and the in parallel and difference of the 5th cable 15
Connect the B phases of the first stator winding, the 3rd cable 13 and the 6th cable 16 are in parallel and are connected the C phases of the first stator winding respectively.
Wherein, the first cable 11, the second cable 12, the 3rd cable 13 are retained as the first bundle by the first fixture 211；4th cable 14,
5th cable 15, the 6th cable 16 are retained as the second bundle by the second fixture 212.
Two the first current transformers 51 are separately positioned on the first cable 11 and the second cable 12 of the first bundle, another
First current transformer 51 is arranged on the 6th cable 16 of the second bundle.
The cable 200 being connected with the second stator winding has 6, wherein, the tenth cable 21 is in parallel with the 13rd cable 24
And connecting the A phases of the second stator winding respectively, the 11st cable 22 and the 14th cable 25 are in parallel and are connected the second stator respectively
The B phases of winding, the 12nd cable 23 and the 15th cable 26 are in parallel and are connected the C phases of the second stator winding respectively.Wherein, the tenth
Cable 21, the 11st cable 22, the 12nd cable 23 are retained as the 3rd bundle by the 4th fixture 221；13rd cable the 24, the tenth
Four cables 25, the 15th cable 26 are retained as the 4th bundle by the 5th fixture 222.
Two the first current transformers 51 are separately positioned on the tenth cable 21 and the 11st cable 22 of the 3rd bundle, another
Individual first current transformer 51 is arranged on the 15th cable 26 of the 4th bundle.But the set-up mode of current transformer is not limited to
This.
As the mode of extension, the cable fault when wind power generating set is provided with two groups of stator winding is shown in Fig. 5
The embodiment three of detection means.
The cable 100 being connected with the first stator winding has 9, wherein, the first cable 11, the 4th cable 14 and the 7th electricity
Cable 17 is in parallel and connects the A phases of the first stator winding respectively, and the second cable 12, the 5th cable 15 and the parallel connection of the 8th cable 18 simultaneously divide
The B phases of the first stator winding are not connected, and the 3rd cable 13, the 6th cable 16 and the parallel connection of the 9th cable 19 and respectively connection first are determined
The C phases of sub- winding.Wherein, the first cable 11, the second cable 12, the 3rd cable 13 are retained as the first bundle by the first fixture 211；
4th cable 14, the 5th cable 15, the 6th cable 16 are retained as the second bundle by the second fixture 212；The electricity of 7th cable the 17, the 8th
Cable 18, the 9th cable 19 are retained as the 3rd bundle by the 3rd fixture 213.
Three the first current transformers 51 are separately positioned on the 5th cable 15 of the first cable 11, second bundle of the first bundle,
And the 3rd bundle the 9th cable 19 on.But the first current transformer 51 is on the cable 100 being connected with the first stator winding
Arrangement not limited to this.
The cable 200 being connected with the second stator winding has 9, wherein, the tenth cable 21, the 13rd cable 24 and the tenth
Six cable 27 is in parallel and connects the A phases of the second stator winding, the 11st cable 22, the 14th cable 25 and the 17th cable respectively
28 B phases that are in parallel and connecting the second stator winding respectively, the 12nd cable 23, the 15th cable 26 are in parallel with the 18th cable 29
And the C phases of the second stator winding are connected respectively.Wherein, the tenth cable 21, the 11st cable 22, the 12nd cable 23 pass through the 4th
Fixture 221 is retained as the 4th bundle；13rd cable 24, the 14th cable 25, the 15th cable 26 are clamped by the 5th fixture 222
For the 5th bundle；16th cable 27, the 17th cable 28 and the 18th cable 29 are retained as the 6th bundle by the 6th fixture 223.
Three the first current transformers 51 are separately positioned on the 14th cable of the tenth cable the 21, the 5th bundle of the 4th bundle
On 25, and the 18th cable 29 of the 6th bundle.But the first current transformer 51 is in the cable 200 being connected with the second stator winding
On arrangement not limited to this.
Embodiment three and four shows the different embodiments of the cable fault detecting device of two groups of stator winding, still
The present embodiment is not limited to both the above embodiment.
Alternatively, as shown in Figure 6, for the cable fault detecting device of embodiment of above, in addition to PLC controls
The first analog to digital conversion circuit 61 that device 7 is communicated to connect, the first current transformer 51 is connected with the first analog to digital conversion circuit 61 respectively.
Alternatively, for the cable fault detecting device of embodiment of above, in addition to the second current transformer 52, second
Current transformer 52 is arranged on the ground wire of tower 3 of wind power generating set, the second current transformer 52 and PLC 7
Communication connection.
Second current transformer 52 be used for detect tower 3 to earth-current and send to PLC 7, if PLC
7 judge the second current transformer 52 detection to earth-current exceed preset value, such as more than 10mA, be then judged as being probably cable
Connecting tube to contact is blown, and the cable bond blown is in tower 3, and now PLC 7 is also judged as cable fault, and
Carry out Trouble Report.
Alternatively, the second current transformer 52 also can detect other electrical equipment original papers of wind power generating set with the presence or absence of leakage
Electricity, over the ground discharge scenario.Meanwhile, it can detect whether wind power generating set is hit by thunder and lightning.Now, PLC 7 also can root
Judge to break down according to the abnormal of detected value of the second current transformer 52, and carry out Trouble Report, be further ensured that live work
Make personnel's personal safety.
Alternatively, for the cable fault detecting device of embodiment of above, in addition to communicate to connect with PLC 7
The second analog to digital conversion circuit 62, the second current transformer 52 is connected with the second analog to digital conversion circuit 62.
Alternatively, tower 3 is ground wire grounded by many piece-root graftings, and the second current transformer 52 is arranged on apart from wind power generating set
Main control cabinet distance most short ground wire on.It can so prevent the second current transformer 52 under longer wiring condition
Signal attenuation.
On the other hand the utility model embodiment provides a kind of wind power generating set, with Cable fault examination as the aforementioned
Device.
The cable fault detecting device that the utility model embodiment is provided, by the way that at least partly the first current transformer is set
Put in different bundles and out of phase cable, and the first current transformer is communicated to connect with PLC respectively, without every
Root cable is all set on the basis of current transformer, you can is accurately detected and is determined whether that cable breaks down, and carry out
The report and processing of failure, can greatly improve the reliability and security of wind power generating set, cable fault can be carried out timely
Ground is detected and handled, the influence that run to wind power generating set of reduction cable fault, by Failure elimination stage, guarantee in the early stage
The operation safety of wind power generating set.The setting quantity of current transformer is reduced simultaneously, cost is reduced, PLC is reduced
Data processing amount.
Further, the cable fault detecting device that the utility model embodiment is provided, can also be to the electric over the ground of complete machine
Stream is detected and Trouble Report, when the power cable for having fusing is overlapped in tower, is alarmed in time, it is ensured that under set tower drum
The personal safety of portion staff.
The wind power generating set that the utility model embodiment is provided, can realize the detection of cable fault with relatively low cost
And Trouble Report, with higher reliability and security.
Further, the wind power generating set that the utility model embodiment is provided, moreover it is possible to carried out to unit to earth-current
Detection and Trouble Report, also improve the security of wind power generating set.
It is described above, only specific embodiment of the utility model, but protection domain of the present utility model is not limited to
This, any one skilled in the art in the technical scope that the utility model is disclosed, can readily occur in change or
Replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the right
It is required that protection domain be defined.
Claims (10)
1. a kind of cable fault detecting device of wind power generating set, the wind power generating set includes stator winding, described fixed
Each phase in A phases, B phases and the C phases of sub- winding is connected at least two cables being connected in parallel, and every three connections are same
The cable clamping of the A phases of winding, B phases and C phases is a bundle, it is characterised in that：The cable fault detecting device is controlled including PLC
Device (7) and multiple first current transformers (51), wherein, at least partly described first current transformer (51) is arranged on different bundles
And on the out of phase cable, first current transformer (51) communicates to connect with the PLC (7) respectively.
2. cable fault detecting device according to claim 1, it is characterised in that the stator winding is one group, described
Each phase in A phases, B phases and the C phases of stator winding is connected to two cables being connected in parallel；The cable is divided into two
Bundle；First current transformer (51) is three, wherein, two the first current transformers (51) are arranged in a bundle cable
On the cable of any two-phase in A phases, B phases and C phases, another first current transformer (51) is arranged in another bundle cable
On the cable of A phases, B phases and the third phase in C phases.
3. cable fault detecting device according to claim 1, it is characterised in that the stator winding is one group, described
Each phase in A phases, B phases and the C phases of stator winding is connected to three cables being connected in parallel；The cable is divided into three
Bundle；First current transformer (51) is three, wherein, three first current transformers (51) are separately positioned on difference
On the out of phase cable of bundle.
4. cable fault detecting device according to claim 1, it is characterised in that the stator winding is two groups, described
Each phase in A phases, B phases and the C phases of stator winding is connected to two cables being connected in parallel；The cable is divided into two
Bundle；First current transformer (51) is six, cable of every three the first current transformers (51) to one group of stator winding
Detected；Wherein,
For a stator winding, two the first current transformers (51) are arranged in the A phases in a bundle cable, B phases and C phases
On the cable of any two-phase, another first current transformer (51) is arranged in A phases, B phases and the C phases in another bundle cable
On the cable of third phase.
5. cable fault detecting device according to claim 1, it is characterised in that the stator winding is two groups, described
Each phase in A phases, B phases and the C phases of stator winding is connected to three cables being connected in parallel；First Current Mutual Inductance
Device (51) is six, and every three the first current transformers (51) are detected to the cable of one group of stator winding；Wherein,
For a stator winding, three the first current transformers (51) are separately positioned on the out of phase cable of different bundles.
6. cable fault detecting device according to claim 1, it is characterised in that also including with the PLC (7)
The first analog to digital conversion circuit (61) of communication connection, first current transformer (51) is electric with first analog-to-digital conversion respectively
Road (61) is connected.
7. cable fault detecting device according to claim 1, it is characterised in that also including the second current transformer
(52), second current transformer (52) is arranged on the ground wire of the tower of the wind power generating set (3), and described second
Current transformer (52) is communicated to connect with the PLC (7).
8. cable fault detecting device according to claim 7, it is characterised in that also including with the PLC (7)
The second analog to digital conversion circuit (62) of communication connection, second current transformer (52) and second analog to digital conversion circuit
(62) connect.
9. cable fault detecting device according to claim 7, it is characterised in that the tower (3) is by many piece-root graftings
Line is grounded, and second current transformer (52) is arranged on the distance of the main control cabinet apart from wind power generating set most short ground connection
On line.
10. a kind of wind power generating set, it is characterised in that with cable fault as claimed in any one of claims 1-9 wherein inspection
Survey device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720176011.4U CN206470357U (en) | 2017-02-24 | 2017-02-24 | Wind power generating set and its cable fault detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176011.4U CN206470357U (en) | 2017-02-24 | 2017-02-24 | Wind power generating set and its cable fault detecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11199177B2 (en) | 2016-12-22 | 2021-12-14 | Vestas Wind Systems A/S | Detecting electrical failures in a wind turbine generator control system |
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2017
- 2017-02-24 CN CN201720176011.4U patent/CN206470357U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11199177B2 (en) | 2016-12-22 | 2021-12-14 | Vestas Wind Systems A/S | Detecting electrical failures in a wind turbine generator control system |
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