CN205921399U - Transformer combined floodgate control system - Google Patents

Transformer combined floodgate control system Download PDF

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Publication number
CN205921399U
CN205921399U CN201620846914.4U CN201620846914U CN205921399U CN 205921399 U CN205921399 U CN 205921399U CN 201620846914 U CN201620846914 U CN 201620846914U CN 205921399 U CN205921399 U CN 205921399U
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CN
China
Prior art keywords
voltage
low
transceiver
transformer
transformator
Prior art date
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CN201620846914.4U
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Chinese (zh)
Inventor
张钢
刘志刚
鲁玉桐
李焱
牟富强
魏路
漆良波
吕海臣
杜军
路亮
王磊
陈杰
刁利军
张馨予
孙星亮
汪封洲
Original Assignee
北京千驷驭电气有限公司
北京交通大学
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Priority to CN201620846914.4U priority Critical patent/CN205921399U/en
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Publication of CN205921399U publication Critical patent/CN205921399U/en

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Abstract

The utility model provides a transformer combined floodgate control system, this system includes: high voltage circuit breaker, transformer, low -voltage circuit breaker, converter and controlling means, controlling means includes: detector, treater and transceiver, the high -pressure side of transformer passes through high voltage circuit breaker to be connected with the electric wire netting, and the low tension side of transformer passes through low -voltage circuit breaker and is connected with the interchange side of converter, synchronization signal is pressed according to the net to the treater, and the control transceiver sends the contravariant instruction to the converter, has controlled the output voltage's of converter interchange side phase place to the control transceiver sends closed instruction to low -voltage circuit breaker, and when the magnitude of voltage of confirming the low tension side of transformer according to the testing result of detector reached low pressure rated voltage value, the control transceiver sent closed the instruction to high voltage circuit breaker. The utility model provides a transformer combined floodgate control system has solved the switching in rush current problem the when transformer is incorporated into the power networks, and easily realizes.

Description

Transformer Close control system
Technical field
This utility model is related to power technology, more particularly, to a kind of Transformer Close control system.
Background technology
Under multiple electricity consumption scene such as subway, urban track traffic, there is power consumption on daytime greatly, and the feelings of night little power consumption Condition.When night lossless electricity or power consumption reduce, Large Copacity can be presented transformator and be changed into no-load running, now should exit this transformator Electrical network, to reduce transformer noload losses, when daytime, power consumption increased, closes a floodgate again and transformator is connected to the grid.
Prior art when Transformer Close is connected to the grid, typically directly by the primary cut-out between transformator and electrical network Directly close a floodgate, but the presence of the randomness due to the voltage-phase of electrical network and transformer core remanent magnetism, and transformator accesses electric Transformer core saturation may be caused during net, and then (amplitude is up to transformator rated current to produce very big inrush phenomenon 6-8 times).Larger inrush phenomenon one side can reduce transformator service life, and primary cut-out on the other hand may be led to protect Shield tripping operation, that is, transformator is connected to the grid unsuccessfully.
The inrush phenomenon leading to for the excitation surge current impact of effective suppression Transformer Close moment, is usually chosen in conjunction at present Suitable line voltage starting phase angle closes a floodgate, that is, so-called " phase selection technology ", but the method is closed a floodgate to primary cut-out Time precision proposes high requirement it is difficult to realize.
Utility model content
This utility model provides a kind of Transformer Close control system, in order to solve the phase selection technology of existing transformator The problem being difficult to.
This utility model provides a kind of Transformer Close control system, comprising: primary cut-out, transformator, low pressure open circuit Device, current transformer 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 used for powering for described current transformer;
Described transceiver is connected with described electrical network and described processor respectively, and the net pressure for receiving described electrical network transmission is 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, for detecting described transformator Low-pressure side magnitude of voltage, obtain first voltage testing result, and described first voltage testing result be sent to described process Device;Described transceiver is also connected with described current transformer, described low-voltage circuit breaker and described primary cut-out respectively, described processor For according to described net pressure synchronizing signal, controlling described transceiver to send inversion instruction to described current transformer, and controlling 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 testing result When the magnitude of voltage of side reaches low-voltage rated magnitude of voltage, described transceiver is controlled to send close command to described primary cut-out;
Wherein, described inversion instructs for indicating that described current transformer is operated in inverter mode and indicates the friendship of described current transformer The output voltage of stream side.
Transformer Close control system as above, also includes switch module, and the DC side of described current transformer passes through institute State switch module to be connected with DC source;
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 transceiver receives, control described receipts Send out device and send close command to described switch module, so that described DC source is powered for described current transformer.
Transformer Close control system as above, the DC side of described current transformer is provided with DC capacitor.
Transformer Close control system as above, described switch module includes tie point in parallel and second Road;
Dc circuit breaker is provided with described tie point, the direct current precharge that described second branch road is provided with series connection connects Tentaculum and direct current pre-charge resistance;
Described detector is also connected with described DC capacitor, described transceiver also respectively with described direct current pre-charge contactor Connect with described dc circuit breaker;
Described processor is additionally operable to, and after getting the grid-connected instruction of transformator that described transceiver receives, controls described Transceiver 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 second voltage testing result, and by institute State second voltage testing result and be sent to described processor;
Described processor is additionally operable to, according to described second voltage testing result, in the magnitude of voltage determining described DC capacitor After reaching electric capacity load voltage value, described transceiver is controlled to send close command to described dc circuit breaker.
The Transformer Close control system that this utility model provides, is controlled working condition and the change of current transformer by control device The voltage-phase of the AC of stream device, so that the voltage-phase of the AC of current transformer is identical with the voltage-phase of electrical network, in phase Position identical when, by current transformer AC be transformator low-pressure side power so that transformator low-pressure side voltage-phase with Electric network voltage phase is identical, and it is ensured that the magnitude of voltage of the low-pressure side of transformator reaches low pressure volume before closed high chopper Determine magnitude of voltage, and then avoid inrush phenomenon during primary cut-out closure, the closing moment to chopper for the system and method There is no particular/special requirement, there is wide applicability.
Brief description
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to required in embodiment description Use accompanying drawing be briefly described it should be apparent that, drawings in the following description are some embodiments of the present utility model, For those of ordinary skill in the art, without having to pay creative labor, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
The structural representation of the Transformer Close control system that Fig. 1 provides for this utility model one embodiment;
The structural representation of the Transformer Close control system that Fig. 2 provides for another embodiment of this utility model;
The structural representation of the Transformer Close control system that Fig. 3 provides for this utility model another embodiment;
The structural representation of the Transformer Close control system that Fig. 4 provides for the another embodiment of this utility model;
The schematic flow sheet of the no swell method of flow control of the transformator that Fig. 5 provides for this utility model one embodiment;
The FB(flow block) of the no swell method of flow control of the transformator that Fig. 6 provides for another embodiment of this utility model.
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Based on the enforcement in this utility model Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into The scope of this utility model protection.
This utility model provides a kind of Transformer Close control system, for realizing no-flashy-flow when transformator is connected to the grid Close a floodgate.The structural representation of the Transformer Close control system that Fig. 1 provides for this utility model one embodiment.As shown in figure 1, should System includes:
Primary cut-out 1, transformator 2, low-voltage circuit breaker 3, current transformer 4 and control device 5, control device 5 includes: 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 used for powering for current transformer 4;
Transceiver 53 is connected with electrical network and processor 52 respectively, for receiving the net pressure synchronizing signal of electrical network transmission, and will Net pressure synchronizing signal is sent to processor 52;
Detector 51 is connected with the AC 42 of current transformer 4 and processor 52 respectively, for detecting the low-pressure side of transformator 2 22 magnitude of voltage, obtains first voltage testing result, and first voltage testing result is sent to processor 52;
Transceiver 53 is also connected with current transformer 4, low-voltage circuit breaker 3 and primary cut-out 1 respectively, and processor 52 is used for basis Net pressure synchronizing signal, controls transceiver 53 to send inversion instruction to current transformer 4, and controls transceiver 53 to low-voltage circuit breaker 3 Send close command, determine that according to first voltage testing result the magnitude of voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated voltage During value, transceiver 53 is controlled to send close command to primary cut-out 1;
Wherein, inversion instruct for indicate current transformer 4 be operated in inverter mode and indicate current transformer 4 AC 42 defeated Go out voltage.
Specifically, as 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 passes through low-voltage circuit breaker 3 even with the AC 42 of current transformer 4 Connect, after low-voltage circuit breaker 3 closes a floodgate, the AC 42 of current transformer 4 is that the low-pressure side 22 of transformator 2 is powered, the low pressure of transformator 2 The voltage-phase of side 22 is identical with the phase place of the alternating voltage of AC 42 output of current transformer 4.The high-pressure side 21 of transformator 2 leads to Cross primary cut-out 1 to be connected with electrical network, electrical network provides alternating voltage, and exemplary, voltage can be 10kv or 35kv.In Fig. 1 The circuit being labeled with three virgules is expressed as three-phase line.When primary cut-out 1 closes a floodgate, the high-pressure side 21 of transformator 2 Voltage-phase is identical with the voltage-phase of electrical network.But the voltage-phase of high-pressure side 21 of transformator 2 and the low-pressure side of transformator 2 22 voltage-phase must be identical, and need to determine that the magnitude of voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage, otherwise The magnetic flux in the iron core of transformator can be led to be mutated when primary cut-out 1 closes a floodgate, produce inrush phenomenon, impact transformator Service life.The exemplary only explanation of above magnitude of voltage, and be not limitation of the utility model.
Voltage-phase for ensureing the high-pressure side 21 of transformator 2 is identical with the voltage-phase of the low-pressure side 22 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 AC 42 of current transformer 4 and electrical network Voltage-phase identical, and then make the voltage phase of the voltage-phase of low-pressure side 22 of transformator 2 and the high-pressure side 21 of transformator 2 Position, the voltage-phase all same of electrical network, the magnitude of voltage for ensureing the 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 AC 42 of current transformer 4 slowly to increase, until the low-pressure side 22 of transformator 2 Magnitude of voltage reach low-voltage rated magnitude of voltage, thus avoid primary cut-out 1 close a floodgate when inrush phenomenon, and due to everywhere electricity Pressure phase place all same, primary cut-out 1 can close a floodgate at any time.
Specifically, transceiver 53 receives the net pressure synchronizing signal that electrical network sends, and net pressure synchronizing signal is sent to process Device 52, the voltage-phase including electrical network in synchronizing signal pressed by this net;Processor 52 passes through transceiver according to net pressure synchronizing signal 53 send inversion instruction to current transformer, and inversion instructs for indicating that current transformer 4 is operated in inverter mode and indicates the friendship of current transformer 4 The output voltage of stream side 42.Exemplary, inversion instruction indicates the phase place of the output voltage of AC 42 and the electrical network of current transformer 4 Phase place is identical, and the amplitude of output voltage is slow to be increased 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 and electric network voltage phase identical AC 42 Output voltage;Then, processor 52 controls transceiver 53 to send close command to low-voltage circuit breaker 3.
Specifically, detector 51 is connected with the AC 42 of current transformer 4, the electricity of the AC 42 of real-time detection current transformer 4 Pressure value, that is, the magnitude of voltage of the low-pressure side 22 of transformator 2, obtains first voltage testing result, and first voltage testing 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 operating process when carrying out Transformer Close for the above-mentioned Transformer Close control system is:
The first step, processor 52 passes through transceiver 53 and sends inversion instruction to current transformer 4, and inversion instructs for indicating unsteady flow Device 4 is operated in inverter mode and indicates the output voltage of the 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, when processor 52 determines that 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 this utility model provides, increases control device, for controlling the work of current transformer The voltage-phase of the AC of state and current transformer, so that the voltage-phase phase of the voltage-phase of the AC of current transformer and electrical network With, when phase place is identical, by current transformer AC be transformator low-pressure side power so that transformator low-pressure side voltage Phase place is identical with electric network voltage phase, and it is ensured that the magnitude of voltage of the low-pressure side of transformator reaches before closed high chopper Low-voltage rated magnitude of voltage, and then avoid inrush phenomenon during primary cut-out closure, the closing moment to chopper for the system There is no particular/special requirement, there is wide applicability.
With reference to embodiment illustrated in fig. 1, the Transformer Close control system that this utility model is provided is carried out specifically Bright.Following each embodiments are improvement and the detailed description on the basis of Fig. 1 embodiment, have part and embodiment illustrated in fig. 1 Identical structure and part, those structures and part connected mode, operation principle all same, this utility model repeats no more, only Distinguishing part is described in detail.
Further, on the basis of embodiment illustrated in fig. 1, the transformation that Fig. 2 provides for another embodiment of this utility model The structural representation of device shutting-brake control system.As shown in Fig. 2 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 passes through switch module 6 It is connected with DC source, processor 52 passes through closure and the disconnection of transceiver 53 controlling switch assembly 6.
Specifically, 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 so that DC source starts to power for current transformer 4 according to close command.Pass through Increasing switch module makes current transformer out of service when transformator is idle.
Further, on the basis of embodiment illustrated in fig. 2, the transformation that Fig. 3 provides for this utility model another embodiment The structural representation of device shutting-brake control system.As shown in figure 3, the DC side of current transformer 4 is provided with DC capacitor 7, this unidirectional current Hold for maintaining DC source to be supplied to the DC voltage stability of current transformer 4, extend the service life of current transformer.
Further, on the basis of embodiment illustrated in fig. 3, the transformation that Fig. 4 provides for the another embodiment of this utility model The structural representation of device shutting-brake control system.As shown in figure 4, switch module 6 includes tie point and second branch road of parallel connection;
Dc circuit breaker 61 is provided with tie point, 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 is also broken with direct current pre-charge contactor 62 and direct current 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 Send close command to direct current pre-charge contactor 62;
Detector 51 is used for detecting the magnitude of voltage of DC capacitor 7, obtains second voltage testing result, and second voltage is examined Survey result and be sent to processor 52;
Processor 52 is additionally operable to, and according to second voltage testing result, reaches electric capacity volume in the magnitude of voltage determining DC capacitor 7 After determining magnitude of voltage, transceiver 53 is controlled to send close command to dc circuit breaker 61.
Specifically, after the grid-connected instruction of the 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, due to direct current pre-charge resistance 63 generally larger it is ensured that DC capacitor 7 charge when Current stabilization, is not in that dash current punctures DC capacitor 7.When the voltage that detector 51 detects DC capacitor 7 reaches electricity After holding load voltage value, processor 52 controls transceiver 53 to send close command, now, the second branch road quilt to dc circuit breaker 61 Tie point short circuit, DC source is directly powered to current transformer by tie point.By increasing by the second branch road, can protect further Shield DC capacitor, extends the service life of DC capacitor.
Optionally, as shown in figure 4, inversion instruction can be 6 road pulse signals, the AC 42 controlling current transformer 4 is defeated The phase place of the alternating voltage going 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 each embodiment of this utility model, such as primary cut-out, low-voltage circuit breaker, direct current are pre- Charging contactor, dc circuit breaker etc., all include the secondary circuit opened Yu disconnect of switch main body and controlling switch main body, receive Send out device 53 to be connected with each secondary circuit.
On the other hand this utility model also provides a kind of no swell method of flow control of transformator, is applied to Transformer Close system System, Transformer Close system includes: primary cut-out, transformator, low-voltage circuit breaker, current transformer, the high-pressure side of transformator is passed through Primary cut-out 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, the method Executive agent can be realized by software or hardware, exemplary, voltage transformer system can be the change in any of the above-described embodiment Depressor shutting-brake control system, executive agent can be the processor in any of the above-described embodiment.Fig. 5 is implemented for this utility model one The schematic flow sheet of the no swell method of flow control of transformator that example provides.As shown in figure 5, 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 the low-pressure side of detection transformator;
S504, when determining that the magnitude of voltage of low-pressure side of transformator reaches low-voltage rated magnitude of voltage, send to primary cut-out Close command.
Wherein, inversion instruct 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, this utility model repeats no more.
With reference to embodiment illustrated in fig. 4, the idiographic flow of the no swell method of flow control of transformator is described in detail. The FB(flow block) of the no swell method of flow control of the transformator that Fig. 6 provides for another embodiment of this utility model.As shown in fig. 6, should Method includes:
S601, processor 52 initializes;
S602, it is determined whether receive the grid-connected instruction of transformator;If so, then execute s603;If it is not, then terminating;
S603, sends close command to direct current pre-charge contactor 62;
S604, judges whether the voltage of DC capacitor 7 reaches electric capacity load voltage value;If so, then execute s605;If it is not, Then execute s604 again;
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, judges whether the voltage of the low-pressure side 22 of transformator 2 reaches low-voltage rated magnitude of voltage;If so, then execute s608;If it is not, then executing s607 again;
S608, sends close command to primary cut-out 1.
Wherein, inversion instruct for indicate current transformer 4 be operated in inverter mode and indicate current transformer 4 AC 42 defeated Go out voltage.Exemplary, control voltage-phase and the electricity of the output voltage of the AC 42 of current transformer 4 according to net pressure synchronizing signal The voltage-phase of net is identical, controls the amplitude of the output voltage of AC 42 of current transformer 4 slowly to increase.
Specifically, 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 illustrating the technical solution of the utility model, rather than it is limited System;Although being described in detail to this utility model with reference to foregoing embodiments, those of ordinary skill in the art should Understand: it still can be modified to the technical scheme described in foregoing embodiments, or to wherein some or all of Technical characteristic carries out equivalent;And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of type each embodiment technical scheme.

Claims (4)

1. a kind of Transformer Close control system is it is characterised in that include: 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 used for powering for described current transformer;
Described transceiver is connected with described electrical network and described processor respectively, for receiving the synchronous letter of net pressure that described electrical network sends 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 first voltage testing result, and described first voltage testing result is sent to described processor;Institute State transceiver to be also connected with described current transformer, described low-voltage circuit breaker and described primary cut-out respectively, described processor is used for According to described net pressure synchronizing signal, control described transceiver to 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 testing result When magnitude of voltage reaches low-voltage rated magnitude of voltage, described transceiver is controlled to send close command to described primary cut-out;
Wherein, described inversion instructs for indicating that described current transformer is operated in inverter mode and indicates the AC of described current transformer Output voltage.
2. Transformer Close control system according to claim 1 is 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 transceiver receives, control described transceiver Send close command to described switch module, so that described DC source is powered for described current transformer.
3. Transformer Close control system according to claim 2 is it is characterised in that the DC side of described current transformer is arranged There is DC capacitor.
4. Transformer Close control system according to claim 3 is it is characterised in that described switch module includes parallel connection Tie point and the second branch road;
Dc circuit breaker is provided with described tie point, 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 also 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 transceiver receives, 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 second voltage testing 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 testing result, reaches in the magnitude of voltage determining described DC capacitor After electric capacity load voltage value, described transceiver is controlled to send close command to described dc circuit breaker.
CN201620846914.4U 2016-08-05 2016-08-05 Transformer combined floodgate control system CN205921399U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106058939A (en) * 2016-08-05 2016-10-26 北京千驷驭电气有限公司 Closing control system and inrush current free control method of transformer
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
WO2018211391A1 (en) * 2017-05-15 2018-11-22 Vertiv Srl Technique for lowering inrush current to an uninterruptible power supply with a transformer
US10439431B2 (en) 2016-02-23 2019-10-08 Vertiv Corporation Method to reduce inrush currents in a transformer-less rectifier uninterruptible power supply system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10439431B2 (en) 2016-02-23 2019-10-08 Vertiv Corporation Method to reduce inrush currents in a transformer-less rectifier uninterruptible power supply system
CN106058939A (en) * 2016-08-05 2016-10-26 北京千驷驭电气有限公司 Closing control system and inrush current free control method of transformer
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
WO2018211391A1 (en) * 2017-05-15 2018-11-22 Vertiv Srl Technique for lowering inrush current to an uninterruptible power supply with a transformer

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