CN106058939A - Closing control system and inrush current free control method of transformer - Google Patents
Closing control system and inrush current free control method of transformer Download PDFInfo
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- CN106058939A CN106058939A CN201610640138.7A CN201610640138A CN106058939A CN 106058939 A CN106058939 A CN 106058939A CN 201610640138 A CN201610640138 A CN 201610640138A CN 106058939 A CN106058939 A CN 106058939A
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- voltage
- low
- transformator
- current transformer
- transformer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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Abstract
The invention provides a closing control system and an inrush current free control method of a transformer. The system comprises a high voltage breaker, a transformer, a low voltage breaker, a current transformer and a controller; the controller comprises a detector, a processor and a transceiver; the high voltage side of the transformer is connected with the power grid via the high voltage breaker, and the low-voltage side of the transformer is connected with the AC side of the current transformer via the low voltage breaker; and according to a grid voltage synchronizing signal, the processor controls the transceiver to send an inversion instruction to the current transformer, the phase of the output voltage at the AC side of the current transformer is controlled, the transceiver is also controlled to send a closing instruction to the low voltage breaker, and when the voltage value at the low voltage side of the transformer is determined to reach a low-voltage rated voltage value according to a detection result of the detector, the transceiver is controlled to send the closing instruction to the high voltage breaker. The closing control system and the inrush current free control method solve the problem of closing inrush current during grid connection of the transformer, and are easy to realize.
Description
Technical field
The present invention relates to power technology, particularly relate to a kind of Transformer Close control system and no-flashy-flow control method.
Background technology
Under the multiple electricity consumption sight such as subway, urban track traffic, there is power consumption on daytime greatly, and the feelings of little power consumption at night
Condition.When night lossless electricity or power consumption reduce time, Large Copacity can be presented transformator and become no-load running, now should be exited by this transformator
Electrical network, to reduce transformer noload losses, when daytime, power consumption increased, again closes a floodgate and is connected to the grid by transformator.
Prior art is when being connected to the grid Transformer Close, typically directly by the primary cut-out between transformator and electrical network
Directly close a floodgate, but due to the randomness of voltage-phase of electrical network and the existence of transformer core remanent magnetism, transformator accesses electricity
Transformer core may be caused during net saturated, and then (amplitude is up to transformator rated current to produce the biggest inrush phenomenon
6-8 times).On the one hand bigger inrush phenomenon can reduce transformator service life, on the other hand primary cut-out may be caused to protect
Protect tripping operation, i.e. transformator is connected to the grid unsuccessfully.
Excitation surge current for effectively suppression Transformer Close moment impacts the inrush phenomenon caused, and is usually chosen in conjunction at present
Suitable line voltage starting phase angle closes a floodgate, the most so-called " phase selection technology ", but primary cut-out is closed a floodgate by the method
Time precision proposes high requirement, it is difficult to realize.
Summary of the invention
The present invention provides a kind of Transformer Close control system and no-flashy-flow control method, in order to solve existing transformator
The problem that phase selection technology is difficult to.
The present invention provides a kind of Transformer Close control system, including: primary cut-out, transformator, low-voltage circuit breaker, change
Stream device and control device, described control device includes: detector, processor and transceiver；
The high-pressure side of described transformator is connected with electrical network by described primary cut-out, and the low-pressure side of described transformator is passed through
Described low-voltage circuit breaker is connected with the AC of described current transformer；
The DC side of described current transformer is connected with DC source, and described DC source is for powering for described current transformer；
Described transceiver is connected with described electrical network and described processor respectively, and the net sent for receiving described electrical network is pressed same
Step signal, and described net pressure synchronizing signal is sent to described processor；
Described detector is connected with the AC of described current transformer and described processor respectively, is used for detecting described transformator
The magnitude of voltage of low-pressure side, obtain the first voltage detecting result, and described first voltage detecting result be sent to described process
Device；Described transceiver is connected with described current transformer, described low-voltage circuit breaker and described primary cut-out the most respectively, described processor
For according to described net pressure synchronizing signal, controlling described transceiver and send inversion instruction to described current transformer, and control described receipts
Send out device and send close command to described low-voltage circuit breaker, determine the low pressure of described transformator according to described first voltage detecting result
When the magnitude of voltage of side reaches low-voltage rated magnitude of voltage, control described transceiver and send close command to described primary cut-out；
Wherein, described inversion instruction is for indicating described current transformer be operated in inverter mode and indicate the friendship of described current transformer
The output voltage of stream side.
Another aspect of the present invention provides the no-flashy-flow control method of a kind of transformator, is applied to Transformer Close system, institute
Stating Transformer Close system to include: primary cut-out, transformator, low-voltage circuit breaker, current transformer, the high-pressure side of described transformator leads to
Crossing described primary cut-out to be connected with electrical network, the low-pressure side of described transformator is by described low-voltage circuit breaker and described current transformer
AC connects；Described method includes:
Receive the net pressure synchronizing signal that described electrical network sends, send inverse according to described net pressure synchronizing signal to described current transformer
Become instruction；
Close command is sent to described low-voltage circuit breaker；
Detect the magnitude of voltage of the low-pressure side of described transformator；
Determine when the magnitude of voltage of the low-pressure side of described transformator reaches low-voltage rated magnitude of voltage, send out to described primary cut-out
Send close command；
Wherein, described inversion instruction is for indicating described current transformer be operated in inverter mode and indicate the friendship of described current transformer
The output voltage of stream side.
The Transformer Close control system of present invention offer and no-flashy-flow control method, controlled current transformer by controlling device
The voltage-phase of the AC of duty and current transformer, so that the voltage phase of the voltage-phase of the AC of current transformer and electrical network
Position is identical, when phase place is identical, the low-pressure side that the AC of current transformer is transformator powers so that the low-pressure side of transformator
Voltage-phase is identical with electric network voltage phase, and before closed high chopper, it is ensured that the magnitude of voltage of the low-pressure side of transformator
Reaching low-voltage rated magnitude of voltage, and then avoid inrush phenomenon when primary cut-out closes, system and method is to chopper
Closing moment there is no particular/special requirement, there is wide applicability.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
The structural representation of the Transformer Close control system that Fig. 1 provides for one embodiment of the invention；
The structural representation of the Transformer Close control system that Fig. 2 provides for another embodiment of the present invention；
The structural representation of the Transformer Close control system that Fig. 3 provides for yet another embodiment of the invention；
The structural representation of the Transformer Close control system that Fig. 4 provides for further embodiment of this invention；
The schematic flow sheet of the no-flashy-flow control method of the transformator that Fig. 5 provides for one embodiment of the invention；
The FB(flow block) of the no-flashy-flow control method of the transformator that Fig. 6 provides for another embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
The present invention provides a kind of Transformer Close control system, closes for the no-flashy-flow realized when transformator is connected to the grid
Lock.The structural representation of the Transformer Close control system that Fig. 1 provides for one embodiment of the invention.As it is shown in figure 1, this system bag
Include:
Primary cut-out 1, transformator 2, low-voltage circuit breaker 3, current transformer 4 and control device 5, control device 5 and include: detection
Device 51, processor 52 and transceiver 53；
The high-pressure side 21 of transformator 2 is connected with electrical network by primary cut-out 1, and the low-pressure side 22 of transformator 2 passes through low pressure
Chopper 3 is connected with the AC 42 of current transformer 4；
The DC side 41 of current transformer 4 is connected with DC source, and DC source is for powering for current transformer 4；
Transceiver 53 is connected with electrical network and processor 52 respectively, for receiving the net pressure synchronizing signal that electrical network sends, and will
Net pressure synchronizing signal is sent to processor 52；
Detector 51 is connected with AC 42 and the processor 52 of current transformer 4 respectively, for detecting the low-pressure side of transformator 2
The magnitude of voltage of 22, obtains the first voltage detecting result, and the first voltage detecting result is sent to processor 52；
Transceiver 53 is connected with current transformer 4, low-voltage circuit breaker 3 and primary cut-out 1 the most respectively, and processor 52 is for basis
Net pressure synchronizing signal, controls transceiver 53 and sends inversion instruction to current transformer 4, and control transceiver 53 to low-voltage circuit breaker 3
Send close command, determine that according to the first voltage detecting result the magnitude of voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated voltage
During value, control transceiver 53 and send close command to primary cut-out 1；
Wherein, inversion instruction is for indicating current transformer 4 be operated in inverter mode and indicate AC 42 defeated of current transformer 4
Go out voltage.
Concrete, as it is shown in figure 1, DC source is connected with current transformer 4, for providing DC voltage, example for current transformer 4
Property, DC source is dc bus, and voltage can be 750 volts or 1500 volts.Current transformer 4 is used for being operated in inverter mode, will
DC voltage is converted into alternating voltage.
The low-pressure side 22 of transformator 2 is connected, when low-voltage circuit breaker 3 by low-voltage circuit breaker 3 with the AC 42 of current transformer 4
After combined floodgate, the low-pressure side 22 that AC 42 is transformator 2 of current transformer 4 is powered, the voltage-phase of the low-pressure side 22 of transformator 2 with
The phase place of the alternating voltage of AC 42 output of current transformer 4 is identical.The high-pressure side 21 of transformator 2 by primary cut-out 1 with
Electrical network connects, and electrical network provides alternating voltage, and exemplary, voltage can be 10kV or 35kV.Fig. 1 is labeled with three virgules
Circuit table be shown as three-phase line.
When primary cut-out 1 closes a floodgate, the voltage-phase of the high-pressure side 21 of transformator 2 is identical with the voltage-phase of electrical network.
But the voltage-phase of the high-pressure side 21 of transformator 2 must be identical with the voltage-phase of the low-pressure side 22 of transformator 2, and needs to determine
The magnitude of voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage, otherwise can cause becoming when primary cut-out 1 closes a floodgate
Magnetic flux sudden change in the iron core of depressor, produces inrush phenomenon, affects the service life of transformator.Above magnitude of voltage is merely illustrative
Explanation, and not limitation of the present invention.
Identical with the voltage-phase of the low-pressure side 22 of transformator 2 for ensureing the voltage-phase of the high-pressure side 21 of transformator 2, control
Device 52 processed need to control the voltage-phase of the AC 42 of current transformer 4, until the voltage-phase of the AC 42 of current transformer 4 and electrical network
Voltage-phase identical, and then make the voltage phase of voltage-phase and the high-pressure side 21 of transformator 2 of the low-pressure side 22 of transformator 2
Position, electrical network voltage-phase the most identical, for ensureing that the magnitude of voltage of low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage, control
Device 52 processed is additionally operable to control the amplitude of the magnitude of voltage of the AC 42 of current transformer 4 and slowly increases, until the low-pressure side 22 of transformator 2
Magnitude of voltage reach low-voltage rated magnitude of voltage, thus avoid inrush phenomenon when primary cut-out 1 closes a floodgate, and due to electricity everywhere
Pressure phase place is the most identical, and primary cut-out 1 can close a floodgate at any time.
Concrete, transceiver 53 receives the net pressure synchronizing signal that electrical network sends, and is sent to process by net pressure synchronizing signal
Device 52, includes the voltage-phase of electrical network in this net pressure synchronizing signal；Processor 52 passes through transceiver according to net pressure synchronizing signal
53 send inversion instruction to current transformer, and inversion instruction is for indicating current transformer 4 be operated in inverter mode and indicate the friendship of current transformer 4
The output voltage of stream side 42.Exemplary, the phase place of the output voltage of the AC 42 of inversion instruction instruction current transformer 4 and electrical network
Phase place is identical, and the amplitude of output voltage slowly increases until reaching the low-voltage rated magnitude of voltage of transformator 2.When processor 52 is to change
After stream device 4 sends inversion instruction, current transformer 4 is operated in inverter mode and exports the AC 42 identical with electric network voltage phase
Output voltage；Then, processor 52 controls transceiver 53 and sends close command to low-voltage circuit breaker 3.
Concrete, detector 51 is connected with the AC 42 of current transformer 4, in real time the electricity of the AC 42 of detection current transformer 4
The magnitude of voltage of the low-pressure side 22 of pressure value, i.e. transformator 2, obtains the first voltage detecting result, and the first voltage detecting result is sent out
Give processor 52.When processor 52 detects the AC 42 of current transformer 4.When processor 52 detects the friendship of current transformer 4
The magnitude of voltage of stream side 42 reaches low-voltage rated magnitude of voltage.After magnitude of voltage meets condition, processor 52 controls transceiver 53 to height
Voltage breaker 1 sends close command.
Exemplary, the above-mentioned Transformer Close control system operating process when carrying out Transformer Close is:
The first step, processor 52 sends inversion by transceiver 53 to current transformer 4 and instructs, and inversion instruction is used for indicating unsteady flow
Device 4 is operated in inverter mode and indicates the output voltage of AC 42 of current transformer 4, it is ensured that the high-pressure side 21 of transformator 2
Voltage-phase is identical with the voltage-phase of the low-pressure side 22 of transformator 2；
Second step, processor 52 sends close command to low-voltage circuit breaker 3；
3rd step, processor 52 detects the magnitude of voltage of the low-pressure side 22 of transformator 2；
4th step, processor 52 determines when the magnitude of voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage, Xiang Gao
Voltage breaker 1 sends close command.
The Transformer Close control system that the present invention provides, increases and controls device, for controlling the duty of current transformer
With the voltage-phase of the AC of current transformer so that the voltage-phase of the AC of current transformer is identical with the voltage-phase of electrical network,
When phase place is identical, the low-pressure side that the AC of current transformer is transformator power so that the voltage phase of the low-pressure side of transformator
Position is identical with electric network voltage phase, and before closed high chopper, it is ensured that the magnitude of voltage of the low-pressure side of transformator reaches low
Pressure load voltage value, and then avoid inrush phenomenon when primary cut-out closes, the closing moment of chopper is not had by native system
There is particular/special requirement, there is wide applicability.
Below in conjunction with embodiment illustrated in fig. 1, the Transformer Close control system providing the present invention is described in detail.Under
State each embodiment and be the improvement on the basis of Fig. 1 embodiment and detailed description, there is part identical with embodiment illustrated in fig. 1
Structure and parts, those structures and parts connected mode, operation principle are the most identical, and the present invention repeats no more, only to distinguishing
Part is described in detail.
Further, on the basis of embodiment illustrated in fig. 1, the transformator that Fig. 2 provides for another embodiment of the present invention closes
The structural representation of lock control system.As in figure 2 it is shown, this Transformer Close control system also includes switch module 6.
Transceiver 53 is connected with processor 52, and transceiver 53 is also connected with switch module 6, and current transformer 4 is by switch module 6
Being connected with DC source, processor 52 controls Guan Bi and the disconnection of switch module 6 by transceiver 53.
Concrete, when transceiver 53 receives the grid-connected instruction of transformator, processor 52 passes through transceiver 53 to switches set
Part 6 sends close command, and switch module 6 closes according to close command so that DC source starts to power for current transformer 4.Pass through
Increasing switch module makes the current transformer can be out of service when the transformator free time.
Further, on the basis of embodiment illustrated in fig. 2, the transformator that Fig. 3 provides for yet another embodiment of the invention closes
The structural representation of lock control system.As it is shown on figure 3, the DC side of current transformer 4 is provided with DC capacitor 7, this DC capacitor is used
In the DC voltage stability maintaining DC source to be supplied to current transformer 4, extend the service life of current transformer.
Further, on the basis of embodiment illustrated in fig. 3, the transformator that Fig. 4 provides for further embodiment of this invention closes
The structural representation of lock control system.As shown in Figure 4, switch module 6 includes the first branch road and second branch road of parallel connection；
It is provided with dc circuit breaker 61 on first branch road, the second branch road is provided with the direct current pre-charge contactor 62 of series connection
With direct current pre-charge resistance 63；
Detector 51 is also connected with DC capacitor 7, and transceiver 53 breaks with direct current pre-charge contactor 62 and direct current the most respectively
Road device 61 connects；
Processor 52 is additionally operable to, and after getting the grid-connected instruction of transformator that transceiver 53 receives, controls transceiver 53
Close command is sent to direct current pre-charge contactor 62；
Detector 51, for detecting the magnitude of voltage of DC capacitor 7, obtains the second voltage detecting result, and by the second voltage inspection
Survey result and be sent to processor 52；
Processor 52 is additionally operable to, and according to the second voltage detecting result, reaches electric capacity volume at the magnitude of voltage determining DC capacitor 7
After determining magnitude of voltage, control transceiver 53 and send close command to dc circuit breaker 61.
Concrete, after the grid-connected instruction of transformator that transceiver 53 receives, processor 52 controls transceiver 53 to second
The direct current pre-charge contactor 62 of branch road sends close command, and when direct current pre-charge contactor 62 closes, DC source passes through
Second road direction DC capacitor 7 charges, owing to direct current pre-charge resistance 63 is the biggest, it is ensured that DC capacitor 7 is when charging
Current stabilization, does not haves dash current and punctures DC capacitor 7.When detector 51 detects that the voltage of DC capacitor 7 reaches electricity
After holding load voltage value, processor 52 controls transceiver 53 and sends close command to dc circuit breaker 61, now, and the second branch road quilt
First branch, short-circuit, DC source is directly powered to current transformer by the first branch road.By increasing by the second branch road, can protect further
Protect DC capacitor, extend the service life of DC capacitor.
Optionally, as shown in Figure 4, inversion instruction can be 6 road pulse signals, and the AC 42 controlling current transformer 4 is defeated
The phase place of the alternating voltage gone out, the intensity of pulse signal determines the amplitude of the alternating voltage of AC 42 output of current transformer 4.
Adaptive, when the structure of current transformer 4 changes, inversion instruction is also carried out adaptive adjustment.
Optionally, all switches in various embodiments of the present invention, as primary cut-out, low-voltage circuit breaker, direct current precharge
Catalyst, dc circuit breaker etc., all include switch main body and control the secondary circuit opened Yu disconnect of switch main body, transceiver
53 are connected with each secondary circuit.
Another aspect of the present invention also provides for the no-flashy-flow control method of a kind of transformator, is applied to Transformer Close system,
Transformer Close system includes: primary cut-out, transformator, low-voltage circuit breaker, current transformer, and high pressure is passed through in the high-pressure side of transformator
Chopper is connected with electrical network, and the low-pressure side of transformator is connected with the AC of current transformer by low-voltage circuit breaker, holding of the method
Row main body can be realized by software or hardware, and exemplary, voltage transformer system can be the transformator in any of the above-described embodiment
Shutting-brake control system, executive agent can be the processor in any of the above-described embodiment.
The schematic flow sheet of the no-flashy-flow control method of the transformator that Fig. 5 provides for one embodiment of the invention.Such as Fig. 5 institute
Showing, the method includes:
The net pressure synchronizing signal that S501, reception electrical network send, according to net pressure synchronizing signal to current transformer transmission inversion instruction；
S502, to low-voltage circuit breaker send close command；
S503, the magnitude of voltage of low-pressure side of detection transformator；
S504, determine when the magnitude of voltage of the low-pressure side of transformator reaches low-voltage rated magnitude of voltage, send to primary cut-out
Close command.
Wherein, inversion instruction for indicate current transformer be operated in inverter mode and indicate current transformer AC output electricity
Pressure.
Said method embodiment is corresponding with the system embodiment shown in Fig. 1 to Fig. 4, has identical technical characteristic and skill
Art effect, the present invention repeats no more.
Below in conjunction with embodiment illustrated in fig. 4, the idiographic flow of the no-flashy-flow control method of transformator is described in detail.
The FB(flow block) of the no-flashy-flow control method of the transformator that Fig. 6 provides for another embodiment of the present invention.As shown in Figure 6, the method
Including:
S601, processor 52 initializes；
S602, it is determined whether receive the grid-connected instruction of transformator；The most then perform S603；If it is not, then terminate；
S603, sends close command to direct current pre-charge contactor 62；
S604, it is judged that whether the voltage of DC capacitor 7 reaches electric capacity load voltage value；The most then perform S605；If it is not,
The most again perform S604；
S605, sends close command to dc circuit breaker 61, sends inversion according to net pressure synchronizing signal to current transformer 4 and refers to
Order；
S606, sends close command to low-voltage circuit breaker 3；
S607, it is judged that whether the voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage；The most then perform
S608；If it is not, the most again perform S607；
S608, sends close command to primary cut-out 1.
Wherein, inversion instruction is for indicating current transformer 4 be operated in inverter mode and indicate AC 42 defeated of current transformer 4
Go out voltage.Exemplary, voltage-phase and the electricity of the output voltage of the AC 42 of current transformer 4 is controlled according to net pressure synchronizing signal
The voltage-phase of net is identical, and the amplitude of the output voltage controlling the AC 42 of current transformer 4 slowly increases.
Concrete, before S602, this method also comprises determining that all switches are in open mode, and all switches include:
Primary cut-out, low-voltage circuit breaker, direct current pre-charge contactor, dc circuit breaker.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (5)
1. a Transformer Close control system, it is characterised in that including: primary cut-out, transformator, low-voltage circuit breaker, change
Stream device and control device, described control device includes: detector, processor and transceiver；
The high-pressure side of described transformator is connected with electrical network by described primary cut-out, and the low-pressure side of described transformator is by described
Low-voltage circuit breaker is connected with the AC of described current transformer；
The DC side of described current transformer is connected with DC source, and described DC source is for powering for described current transformer；
Described transceiver is connected with described electrical network and described processor respectively, and the net pressure sent for receiving described electrical network synchronizes letter
Number, and described net pressure synchronizing signal is sent to described processor；
Described detector is connected with the AC of described current transformer and described processor respectively, for detecting the low of described transformator
The magnitude of voltage of pressure side, obtains the first voltage detecting result, and described first voltage detecting result is sent to described processor；Institute
Stating transceiver to be connected with described current transformer, described low-voltage circuit breaker and described primary cut-out the most respectively, described processor is used for
According to described net pressure synchronizing signal, control described transceiver and send inversion instruction to described current transformer, and control described transceiver
Send close command to described low-voltage circuit breaker, determine the low-pressure side of described transformator according to described first voltage detecting result
When magnitude of voltage reaches low-voltage rated magnitude of voltage, control described transceiver and send close command to described primary cut-out；
Wherein, described inversion instruction is for indicating described current transformer be operated in inverter mode and indicate the AC of described current transformer
Output voltage.
Transformer Close control system the most according to claim 1, it is characterised in that also include switch module, described change
The DC side of stream device is connected with DC source by described switch module；
Described transceiver is also connected with described switch module；
Described processor is additionally operable to, after getting the grid-connected instruction of transformator that described transceivers arrives, control described transceiver
Send close command to described switch module, power so that described DC source is described current transformer.
Transformer Close control system the most according to claim 2, it is characterised in that the DC side of described current transformer is arranged
There is DC capacitor.
Transformer Close control system the most according to claim 3, it is characterised in that described switch module includes parallel connection
First branch road and the second branch road；
It is provided with dc circuit breaker on described first branch road, described second branch road is provided with the direct current pre-charge contactor of series connection
With direct current pre-charge resistance；
Described detector is also connected with described DC capacitor, described transceiver the most respectively with described direct current pre-charge contactor and institute
State dc circuit breaker to connect；
Described processor is additionally operable to, and after getting the grid-connected instruction of transformator that described transceivers arrives, controls described transmitting-receiving
Device sends close command to described direct current pre-charge contactor；
Described detector is additionally operable to detect the magnitude of voltage of described DC capacitor, obtains the second voltage detecting result, and by described
Two voltage detecting results are sent to described processor；
Described processor is additionally operable to, and according to described second voltage detecting result, reaches at the magnitude of voltage determining described DC capacitor
After electric capacity load voltage value, control described transceiver and send close command to described dc circuit breaker.
5. the no-flashy-flow control method of a transformator, it is characterised in that be applied to Transformer Close system, described transformator closes
Brake system includes: primary cut-out, transformator, low-voltage circuit breaker, current transformer, and described high pressure is passed through in the high-pressure side of described transformator
Chopper is connected with electrical network, and the low-pressure side of described transformator is connected by the AC of described low-voltage circuit breaker with described current transformer
Connect；Described method includes:
Receive the net pressure synchronizing signal that described electrical network sends, send inversion according to described net pressure synchronizing signal to described current transformer and refer to
Order；
Close command is sent to described low-voltage circuit breaker；
Detect the magnitude of voltage of the low-pressure side of described transformator；
Determine when the magnitude of voltage of the low-pressure side of described transformator reaches low-voltage rated magnitude of voltage, send to described primary cut-out and close
Close instruction；
Wherein, described inversion instruction is for indicating described current transformer be operated in inverter mode and indicate the AC of described current transformer
Output voltage.
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| CN201610640138.7A CN106058939A (en) | 2016-08-05 | 2016-08-05 | Closing control system and inrush current free control method of transformer |
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| CN201610640138.7A CN106058939A (en) | 2016-08-05 | 2016-08-05 | Closing control system and inrush current free control method of transformer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023817A1 (en) * | 2016-08-05 | 2018-02-08 | 北京千驷驭电气有限公司 | Transformer closing control system and inrush-less control method |
| CN108666974A (en) * | 2018-05-15 | 2018-10-16 | 西安交通大学 | Transformer based on magnetic linkage control and excitation surge current suppressing method |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
| CN112164617A (en) * | 2020-09-27 | 2021-01-01 | 广东电网有限责任公司佛山供电局 | Control system for inhibiting switching-on inrush current of circuit breaker |
| WO2023092696A1 (en) * | 2021-11-24 | 2023-06-01 | 广东福德电子有限公司 | Multifunctional self-checking switching-on power supply device |
| CN117117794A (en) * | 2023-10-12 | 2023-11-24 | 广东省洛仑兹技术股份有限公司 | Transformer pre-magnetizing circuit and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228049A1 (en) * | 2003-05-14 | 2004-11-18 | Samsung Electronics Co., Ltd. | High voltage power supply apparatus and method of correcting current output from the apparatus |
| CN105186302A (en) * | 2015-08-13 | 2015-12-23 | 南京亚派科技股份有限公司 | Non-impact slow starting method for subway energy feedback device |
| CN105226610A (en) * | 2015-10-26 | 2016-01-06 | 三峡大学 | A kind of Transformer Close magnetizing inrush current arrester |
| CN105490308A (en) * | 2016-02-05 | 2016-04-13 | 阳光电源股份有限公司 | Middle-high-voltage grid-connected system and middle-high-voltage grid-connected power generation system |
| CN205921399U (en) * | 2016-08-05 | 2017-02-01 | 北京千驷驭电气有限公司 | Transformer combined floodgate control system |
-
2016
- 2016-08-05 CN CN201610640138.7A patent/CN106058939A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228049A1 (en) * | 2003-05-14 | 2004-11-18 | Samsung Electronics Co., Ltd. | High voltage power supply apparatus and method of correcting current output from the apparatus |
| CN105186302A (en) * | 2015-08-13 | 2015-12-23 | 南京亚派科技股份有限公司 | Non-impact slow starting method for subway energy feedback device |
| CN105226610A (en) * | 2015-10-26 | 2016-01-06 | 三峡大学 | A kind of Transformer Close magnetizing inrush current arrester |
| CN105490308A (en) * | 2016-02-05 | 2016-04-13 | 阳光电源股份有限公司 | Middle-high-voltage grid-connected system and middle-high-voltage grid-connected power generation system |
| CN205921399U (en) * | 2016-08-05 | 2017-02-01 | 北京千驷驭电气有限公司 | Transformer combined floodgate control system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023817A1 (en) * | 2016-08-05 | 2018-02-08 | 北京千驷驭电气有限公司 | Transformer closing control system and inrush-less control method |
| CN108666974A (en) * | 2018-05-15 | 2018-10-16 | 西安交通大学 | Transformer based on magnetic linkage control and excitation surge current suppressing method |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
| CN112164617A (en) * | 2020-09-27 | 2021-01-01 | 广东电网有限责任公司佛山供电局 | Control system for inhibiting switching-on inrush current of circuit breaker |
| CN112164617B (en) * | 2020-09-27 | 2021-08-03 | 广东电网有限责任公司佛山供电局 | Control system for inhibiting switching-on inrush current of circuit breaker |
| WO2023092696A1 (en) * | 2021-11-24 | 2023-06-01 | 广东福德电子有限公司 | Multifunctional self-checking switching-on power supply device |
| CN117117794A (en) * | 2023-10-12 | 2023-11-24 | 广东省洛仑兹技术股份有限公司 | Transformer pre-magnetizing circuit and control method thereof |
| CN117117794B (en) * | 2023-10-12 | 2024-02-27 | 广东省洛仑兹技术股份有限公司 | Transformer pre-magnetizing circuit and control method thereof |
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Application publication date: 20161026 |