CN206412831U - Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected - Google Patents
Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected Download PDFInfo
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- CN206412831U CN206412831U CN201621436925.1U CN201621436925U CN206412831U CN 206412831 U CN206412831 U CN 206412831U CN 201621436925 U CN201621436925 U CN 201621436925U CN 206412831 U CN206412831 U CN 206412831U
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- grid
- auxiliary reclay
- contactor
- power supply
- normally closed
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Abstract
The utility model discloses a kind of power supply control loop of wind-powered electricity generation double-feed current transformer in grid-connected, including AC power, dc source, UPS, grid-connected contactor, auxiliary reclay and verification relay, described AC power is connected with UPS, UPS connects grid-connected contactor by auxiliary reclay, described dc source also connects grid-connected contactor, verification relay is connected between dc source and grid-connected contactor, described UPS includes input and output end, described grid-connected contactor includes first coil power end, second coil power end and pickup signal end, breaking signal end and common end, and grid-connected contactor is arranged on double-feed current transformer stator side and is connected with power network.Loop structure of the present utility model is simple, considerably reduces holistic cost, it is to avoid increase structure space, and has the advantages that the design for setting failure monitoring.
Description
Technical field
The utility model belongs to the technical field of wind-power electricity generation, more particularly, to a kind of wind-powered electricity generation double-feed current transformer in grid-connected
Power supply control loop.
Background technology
Wind energy is as current techniques are most ripe, most possess scale and the renewable clear energy sources of exploit condition.Wind-force is sent out
Group of motors be it is a set of automatically adjust, unattended automatic equipment, in the process of running, it is necessary to meet right in national standard
The requirement of low voltage crossing, voltage is unable to off-grid in rated voltage 20% within a certain period of time, therefore the distribution link of current transformer, i.e.,
The power supply of the part such as controller and major loop switch is needed to use in line style UPS（Uninterruptible Power
System/Uninterruptible Power Supply, i.e. uninterrupted power source）.
But with the development in wind-powered electricity generation field, wind-driven generator pool-size is continuously increased, it is fixed applied to double-feed current transformer
The grid-connected contactor capacity that sub- side is connected with power network increases therewith, and the electric current of grid-connected contactor closing coil is consequently increased, from
And to proposing requirement in line style UPS for what it was powered.If inversion module off-capacity is to support grid-connected contactor inside UPS
The immediate current of closing coil, can cause to close moment, exchange UPS voltage reductions, end core control after influence in grid-connected contactor
Device processed and other major loop devices control supply voltage, operation normal to double-feed current transformer threaten.
Now in line style UPS capacity from mainly there is two kinds, first way is according to grid-connected contactor closing coil wink
Between electric current capacity increase UPS capacity, be the drawbacks of such a method after grid-connected contactor capacity increase, be with major loop capacity
Ratio, or even the mode of greater proportion increase UPS capacity, and in During Process of Long-term Operation, other control loop capacity do not increase
Plus, simply use UPS capacity 30 ~ 10% are even lower, and this mode economy is very poor, and take larger current transformer knot
Structure design space.
Second method is that kind of the capacity being used for a long time according to UPS rear ends control loop selects UPS, ignores closing coil moment
Current course, the direct current UPS of an increase controller, it is to avoid influence of the electric current to controller 24VDC voltages, are reduced to other devices
Influence.Such a method disadvantage is that increase by one direct current UPS and respective battery, increase cost and trouble point, take
Structure space；In addition, the mismatch of capacity can be damaged to the semiconductor devices of UPS inside inversion module, increase fault rate,
Reduction exchange UPS service lifes.
Utility model content
The utility model provides a kind of application economy, saves structure space and solve to solve existing technical problem
Certainly the grid-connected contactor closing coil immediate current of double-feed current transformer to the wind-powered electricity generation double-feed current transformer of UPS capacity requirements in grid-connected
Power supply control loop.
The utility model is adopted the technical scheme that to solve technical problem present in prior art：
Power supply control loop of the wind-powered electricity generation double-feed current transformer of the present utility model in grid-connected, including AC power, direct current
Source, UPS, grid-connected contactor, auxiliary reclay and verification relay, described AC power are connected with UPS, and UPS passes through centre
Relay connects grid-connected contactor, and described dc source also connects grid-connected contactor, connected between dc source and grid-connected contactor
Verification relay is connected to, described UPS includes input and output end, and described grid-connected contactor includes first coil power supply
End, the second coil power end and pickup signal end, breaking signal end and common end, and grid-connected contactor is arranged on double-fed
Current transformer stator side is simultaneously connected with power network.
Described auxiliary reclay has two groups of contacts, and the first public movable contact of auxiliary reclay and the second public move are touched
Point is connected with the first coil power end of grid-connected contactor and the second coil power end respectively, and the first of auxiliary reclay is normally closed quiet
Contact and the second normally closed stationary contact are connected on UPS output end L ends and output end N-terminal, and the first of auxiliary reclay is normal
Open stationary contact and the second normally opened stationary contact be connected on UPS input L ends and input N-terminal, and with the L of AC power
End is connected with N-terminal.
Described auxiliary reclay uses the serial auxiliary reclays of the RPW of Wei's Weidmulie.
The two ends of described verification relay are connected with 24V DC power supply terminals and 0V DC power supply terminals respectively, monitor relay
Device one end is also connected with the pickup signal end and breaking signal end of grid-connected contactor, and the verification relay other end is also connected with grid-connected contact
The common end of device.
The pickup signal end of described grid-connected contactor connects one end of auxiliary reclay normal open switch, normal open switch it is another
One end connects 24V DC power supply terminals, and the breaking signal end of grid-connected contactor connects one end of auxiliary reclay normally closed switch, middle
The other end of relay normally closed switch connects one end of verification relay normally closed switch, the other end of verification relay normally closed switch
24V DC power supply terminals are connected, the common of grid-connected contactor is terminated into 0V DC power supply terminals.
One end of described auxiliary reclay normal open switch and the first of auxiliary reclay the normally opened stationary contact are connected, the other end
Connect the first public movable contact of auxiliary reclay；One end of described auxiliary reclay normally closed switch and verification relay are normally closed
One end of switch is connected with the first normally closed stationary contact of auxiliary reclay, the other end of auxiliary reclay normally closed switch and monitoring
The other end of relay normally closed switch is all connected with the first public movable contact of auxiliary reclay.
The normal open switch of described auxiliary reclay and the normally closed switch of auxiliary reclay are connected by inverter controller to be controlled
System.
The normally closed switch of described verification relay is connected by grid-connected contactor controller and controlled.
Described grid-connected contactor uses ABB AF2050 contactors.
The utility model has the advantages and positive effects of：
Loop structure of the present utility model is simple, considerably reduces holistic cost, it is to avoid increase structure space, and has
There is the design that failure monitoring is set.Under conditions of grid-connected contactor closing coil immediate current problem is considered, solve
Selection of the wind-powered electricity generation double-feed current transformer to UPS capacity, it is to avoid grid-connected contactor closing coil immediate current to double-feed current transformer just
Often operation is caused harm, and the grid-connected contactor closing line of double-feed current transformer is improved in the improvement to grid-connected contactor closing coil power supply
Enclose current supply circuit and its control.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Wherein：KM1：Grid-connected contactor K1：Auxiliary reclay
K2：Verification relay S1：Two groups of contacts of auxiliary reclay
S2：The normally closed switch S3 of verification relay：The normal open switch of auxiliary reclay
S4：The normally closed switch A1 of auxiliary reclay：First coil power end
A2：Second coil power end 1：Pickup signal end
2：Breaking signal end 3：Common end
11：First public movable contact 21：Second public movable contact
12：First normally closed stationary contact 22：Second normally closed stationary contact
14：First normally opened stationary contact 24：Second normally opened stationary contact.
Embodiment
Referring to the drawings and the utility model is described in detail embodiment.
As shown in figure 1, power supply control loop of the wind-powered electricity generation double-feed current transformer of the present utility model in grid-connected, including alternating current
Source, dc source, UPS, grid-connected contactor, auxiliary reclay and verification relay, described AC power are connected with UPS, UPS
Grid-connected contactor is connected by auxiliary reclay, described dc source also connects grid-connected contactor, and dc source connects with grid-connected
Verification relay is connected between tentaculum, described UPS includes input and output end, and described grid-connected contactor includes First Line
Power end, the second coil power end and pickup signal end, breaking signal end and common end are enclosed, and grid-connected contactor is set
It is connected in double-feed current transformer stator side and with power network.
Described auxiliary reclay has two groups of contacts, and the first public movable contact of auxiliary reclay and the second public move are touched
Point is connected with the first coil power end of grid-connected contactor and the second coil power end respectively, and the first of auxiliary reclay is normally closed quiet
Contact and the second normally closed stationary contact are connected on UPS output end L ends and output end N-terminal, and the first of auxiliary reclay is normal
Open stationary contact and the second normally opened stationary contact be connected on UPS input L ends and input N-terminal, and with the L of AC power
End is connected with N-terminal.
Described auxiliary reclay uses the serial auxiliary reclays of the RPW of Wei's Weidmulie.
The two ends of described verification relay are connected with 24V DC power supply terminals and 0V DC power supply terminals respectively, monitor relay
Device one end is also connected with the pickup signal end and breaking signal end of grid-connected contactor, and the verification relay other end is also connected with grid-connected contact
The common end of device.
The pickup signal end of described grid-connected contactor connects one end of auxiliary reclay normal open switch, normal open switch it is another
One end connects 24V DC power supply terminals, and the breaking signal end of grid-connected contactor connects one end of auxiliary reclay normally closed switch, middle
The other end of relay normally closed switch connects one end of verification relay normally closed switch, the other end of verification relay normally closed switch
24V DC power supply terminals are connected, the common of grid-connected contactor is terminated into 0V DC power supply terminals.
One end of described auxiliary reclay normal open switch and the first of auxiliary reclay the normally opened stationary contact are connected, the other end
Connect the first public movable contact of auxiliary reclay；One end of described auxiliary reclay normally closed switch and verification relay are normally closed
One end of switch is connected with the first normally closed stationary contact of auxiliary reclay, the other end of auxiliary reclay normally closed switch and monitoring
The other end of relay normally closed switch is all connected with the first public movable contact of auxiliary reclay.
The normal open switch of described auxiliary reclay and the normally closed switch of auxiliary reclay are connected by inverter controller to be controlled
System.
The normally closed switch of described verification relay is connected by grid-connected contactor controller and controlled.
Described grid-connected contactor uses ABB AF2050 contactors.
The actual grid-connected contactor KM1 with high-capacity coil of the utility model uses the AF2050 contactors that ABB is produced,
The first coil power end and the second coil power end of wherein A1 points and A2 points for coil power, it is normal inside grid-connected contactor
Make and break pass is acted with main contact simultaneously when, under main contact disconnection, the normally closed switch closure inside grid-connected contactor is connecing
Tentaculum coil connects moment, and connection is closing coil, and current value is larger, but after main contact closure, inside grid-connected contactor
Normally closed switch disjunction, closing coil is incorporated to hold-in winding, and current reduction is simultaneously kept, but maintains main contact state enough.
1 point of grid-connected contactor KM1 main contacts is the pickup signal end that inverter controller is controlled, and 2 points are current transformer control
The breaking signal end of device processed control, no 24V can the grid-connected contactor of disjunction, pickup signal end and breaking signal end are inputted simultaneously
24V can just make grid-connected contactor adhesive, and 3 points are common end, access 0V DC power supply terminals, and grid-connected main noddle on contactor
Division control controls the normal open switch S3 and auxiliary reclay normally closed switch S4 of auxiliary reclay to carry out by inverter controller
Implement.
The auxiliary reclay K1 that the utility model has two groups of contacts and Large Copacity 230V AC coils uses Wei's Weidmulie
The serial auxiliary reclays of the RPW of production, the first public movable contact 11 and second of two groups of contact sets of auxiliary reclay is public dynamic tactile
Point 21 is connected on grid-connected contactor first coil power end A1 and the second coil power end A2, i.e., and the zero of grid-connected contactor power end
On line and live wire, the L2 of the first normally closed stationary contact 22 of normally closed stationary contact 12 and second of auxiliary reclay access UPS output ends and
On N2, i.e., on the zero line and live wire of UPS output ends, the access UPS inputs of the first normally opened stationary contact 14 and second normally opened stationary contact 24
On the L1 and N1 at end, i.e., on the zero line and live wire of UPS inputs, it is also on the L and N of single-phase 230V civil powers, i.e. the zero line of civil power
On live wire, on the L1 and N1 of auxiliary reclay coil access UPS inputs, i.e., on the zero line and live wire of UPS inputs, it is also
On the L and N of single-phase 230V civil powers, i.e., on the zero line and live wire of civil power.
Under normal condition, exchange 230V cities are electrically connected, and UPS inputs produce voltage, and auxiliary reclay first is public dynamic tactile
The public movable contact 21 of point 11 and second is contacted with the first normally opened stationary contact 24 of normally opened stationary contact 14 and second respectively, now by unsteady flow
The grid-connected contactor of device controller control does not obtain adhesive order, therefore grid-connected contactor coil is not turned on, in wind-power electricity generation
During unit operation to the grid-connected stage, inverter controller sends contactor adhesive order, and control contactor coil is connected, now closed
Brake cable circle immediate current electric current is provided by civil power, and ups power is not used.
During low voltage crossing, simulating grid drop to it is 20% even lower, the time within 625ms, line voltage
Reduction, auxiliary reclay transition status, the public movable contact 21 of the public public movable contact 11 and second of contact first is respectively with first
The normally closed stationary contact 22 of normally closed stationary contact 12 and second is contacted, because auxiliary reclay moving contact operating distance is short, actuation time
Toff ＜ 10ms, operation voltage is about 92V, and grid-connected contactor adhesive and hold mode transfer characteristic are clearly, voltage interruption
Contact is reactionless in 10ms, starts operation voltage about between 50 ~ 80V, the action therefore auxiliary reclay takes the lead in, and in grid-connected contact
In the reactionless device of device contact, that is, closing coil is not switched to, be still keeping coil state, therefore electric current will not be sharply increased, and
In a short time, auxiliary reclay is that coil power is transformed into UPS power supply states by exchanging 230V civil powers, and no-voltage is poor, grid-connected
Main noddle on contactor continues to be kept closed.
Further, since inverter controller can still be run during Voltage Drop, and grid-connected main noddle on contactor
Disjunction is sent by controller, and the verification relay of a 24V power supply is increased in the grid-connected contactor PLC disjunction orders controlled
K2, if verification relay contact is adhered or failed, grid-connected contactor is powered in closing course by UPS, UPS output voltage drop
It is low, reduced by the UPS 24V supply voltage switches powered, verification relay K2 actions, the sets of contacts of verification relay normally closed switch
11 and 12 disjunctions, make in grid-connected contactor disjunction, another sets of contacts access inverter controller digital quantity input point, inform unsteady flow
Device controller 24V supply voltages go wrong, and wait and safeguarding after alarm.
Loop structure of the present utility model is simple, considerably reduces holistic cost, it is to avoid increase structure space, and has
There is the design that failure monitoring is set.Under conditions of grid-connected contactor closing coil immediate current problem is considered, solve
Selection of the wind-powered electricity generation double-feed current transformer to UPS capacity, it is to avoid grid-connected contactor closing coil immediate current to double-feed current transformer just
Often operation is caused harm, and the grid-connected contactor closing line of double-feed current transformer is improved in the improvement to grid-connected contactor closing coil power supply
Enclose current supply circuit and its control.
Embodiment of the present utility model is described in detail above, but the content is only of the present utility model preferable
Embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.It is all according to present utility model application scope made it is equal
Deng change and improvement etc., all should still it belong within patent covering scope of the present utility model.
Claims (9)
1. a kind of power supply control loop of wind-powered electricity generation double-feed current transformer in grid-connected, it is characterised in that：Including AC power, direct current
Source, UPS, grid-connected contactor, auxiliary reclay and verification relay, described AC power are connected with UPS, and UPS passes through centre
Relay connects grid-connected contactor, and described dc source also connects grid-connected contactor, connected between dc source and grid-connected contactor
Verification relay is connected to, described UPS includes input and output end, and described grid-connected contactor includes first coil power supply
End, the second coil power end and pickup signal end, breaking signal end and common end, and grid-connected contactor is arranged on double-fed
Current transformer stator side is simultaneously connected with power network.
2. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 1 in grid-connected, it is characterised in that：It is described
Auxiliary reclay there are two groups of contacts, the first public movable contact and the second public movable contact of auxiliary reclay respectively with it is grid-connected
The first coil power end of contactor and the connection of the second coil power end, the first normally closed stationary contact of auxiliary reclay and second normal
Close stationary contact to be connected on UPS output end L ends and output end N-terminal, the first normally opened stationary contact of auxiliary reclay and
Two normally opened stationary contacts are connected on UPS input L ends and input N-terminal, and are connected with the L ends of AC power and N-terminal.
3. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 2 in grid-connected, it is characterised in that：It is described
Auxiliary reclay using Wei's Weidmulie the serial auxiliary reclays of RPW.
4. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 1 in grid-connected, it is characterised in that：It is described
The two ends of verification relay be connected respectively with 24V DC power supply terminals and 0V DC power supply terminals, verification relay one end is also connected with
The pickup signal end and breaking signal end of grid-connected contactor, the verification relay other end are also connected with the common of grid-connected contactor
End.
5. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 1 in grid-connected, it is characterised in that：It is described
Grid-connected contactor pickup signal end connect auxiliary reclay normal open switch one end, normal open switch the other end connection 24V
DC power supply terminal, the breaking signal end of grid-connected contactor connects one end of auxiliary reclay normally closed switch, and auxiliary reclay is normally closed
The other end of switch connects one end of verification relay normally closed switch, and the other end connection 24V of verification relay normally closed switch is straight
Power end is flowed, the common of grid-connected contactor is terminated into 0V DC power supply terminals.
6. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 5 in grid-connected, it is characterised in that：It is described
One end of auxiliary reclay normal open switch and the first normally opened stationary contact of auxiliary reclay connect, relay in the middle of other end connection
First public movable contact of device；One end of described auxiliary reclay normally closed switch and one end of verification relay normally closed switch are equal
It is connected with the first normally closed stationary contact of auxiliary reclay, the other end and verification relay of auxiliary reclay normally closed switch are normally closed to be opened
The other end of pass is all connected with the first public movable contact of auxiliary reclay.
7. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 5 in grid-connected, it is characterised in that：It is described
The normal open switch of auxiliary reclay and the normally closed switch of auxiliary reclay by inverter controller connect control.
8. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 5 in grid-connected, it is characterised in that：It is described
Verification relay normally closed switch by grid-connected contactor controller connect control.
9. power supply control loop of the wind-powered electricity generation double-feed current transformer according to claim 5 in grid-connected, it is characterised in that：It is described
Grid-connected contactor use ABB AF2050 contactors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436925.1U CN206412831U (en) | 2016-12-26 | 2016-12-26 | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436925.1U CN206412831U (en) | 2016-12-26 | 2016-12-26 | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412831U true CN206412831U (en) | 2017-08-15 |
Family
ID=59552051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621436925.1U Expired - Fee Related CN206412831U (en) | 2016-12-26 | 2016-12-26 | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687399A (en) * | 2018-12-03 | 2019-04-26 | 漳州科华技术有限责任公司 | Inverter overcurrent protection control method, device and terminal device |
-
2016
- 2016-12-26 CN CN201621436925.1U patent/CN206412831U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687399A (en) * | 2018-12-03 | 2019-04-26 | 漳州科华技术有限责任公司 | Inverter overcurrent protection control method, device and terminal device |
| CN109687399B (en) * | 2018-12-03 | 2020-07-03 | 漳州科华技术有限责任公司 | Inverter overcurrent protection control method and device and terminal equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 Termination date: 20211226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |