CN109039041A - For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method - Google Patents
For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method Download PDFInfo
- Publication number
- CN109039041A CN109039041A CN201810841482.1A CN201810841482A CN109039041A CN 109039041 A CN109039041 A CN 109039041A CN 201810841482 A CN201810841482 A CN 201810841482A CN 109039041 A CN109039041 A CN 109039041A
- Authority
- CN
- China
- Prior art keywords
- bypass
- module
- isolating device
- terminal
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The invention discloses a kind of for the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method.The bypass isolating device includes: first input end, the second input terminal, the first output end, second output terminal and control terminal, first input end and the connection exchange input of the second input terminal, first output end exchanges input with second output terminal output, conductive connection between first input end and the second input terminal is in an off state, between first input end and the first output end, conductive connection state is respectively between the second input terminal and second output terminal, control terminal receives control signal；Isolating device is bypassed according to the received control information of control terminal, is formed between first input end and the second input terminal after being conductively connected, disconnects the outlet line of the first output end and the second output terminal.The present invention can carry out on-line maintenance to unsteady flow module, improve system reliability, guarantee the safety of maintenance when cascade connection type converter system is in operating status.
Description
Technical field
The present invention relates to power electronics field, in particular to dress is isolated in a kind of bypass for cascade connection type converter system
It sets, cascade connection type converter system and control method.
Background technique
Unsteady flow module in cascade connection type converter system is often fitted with bypass module, and in unsteady flow module failure, system will be controlled
Associated unsteady flow module bypass is realized unsteady flow module bypass function by bypass module.System is lacking one or more levels unsteady flow mould
In the case where block, appropriate adjustment control strategy, still can reliability service in a certain range, carried out again to proper moment shutdown
The replacement and repair of unsteady flow module.
But cascade connection type converter system needs the volume of dropping in the case where lacking one or more levels unsteady flow module or makes unsteady flow
Module overlond running easily leads to new unsteady flow module for a long time and breaks down.Usually guarantee that cascade connection type converter system normally exports,
When new unsteady flow module breaks down, it is typically chosen shutdown and carries out system maintenance, larger damage can be caused to practical application in this way
It loses.
Summary of the invention
The present invention provides a kind of for the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control
Method could carry out unsteady flow module under cascade connection type system-down state to safeguard caused stop to solve existing scheme needs
The problem of machine loses.
An aspect of of the present present invention provides a kind of bypass isolating device, comprising: including first input end, the second input terminal,
First output end, second output terminal and control terminal, first input end and the second input terminal are for connecting exchange input, the first output
End exchanges input for exporting with second output terminal, and the conductive connection between first input end and the second input terminal, which is in, disconnects shape
State is respectively at conductive connection state between first input end and the first output end, between the second input terminal and second output terminal,
Control terminal is for receiving control signal；Isolating device is bypassed, according to the received control information of control terminal, in first input end and the
It is formed and is conductively connected between two input terminals, and formed after conductive connection between first input end and the second input terminal, disconnected
The outlet line of first output end and second output terminal.
Another aspect provides a kind of cascade connection type converter systems, comprising: three-phase cascades branch and control system；
Every phase cascade branch is connected in series by multiple unsteady flow modules in exchange side, the exchange side first port and second of each unsteady flow module
Port is connect with the first output end of above-mentioned bypass isolating device and second output terminal respectively, bypasses the first input of isolating device
End connects the ac circuit of corresponding cascade branch with the second input terminal；The control system bypass with each unsteady flow module relation respectively
The control terminal of isolating device connects.
Another aspect provides a kind of control method of cascade connection type converter system, cascade connection type converter system is upper
Cascade connection type converter system is stated, in the operation of cascade connection type converter system, the first input end of setting bypass isolating device and second defeated
The conductive connection entered between end is in an off state, and is bypassed between the first input end of isolating device and the first output end, on side
Conductive connection state is respectively between the second input terminal and second output terminal of road isolating device；Control method includes: to utilize
The control terminal for bypassing isolating device receives control information；According to the control information, the shape between first input end and the second input terminal
It is formed after conductive connection at conductive connection, and between first input end and the second input terminal, disconnects bypass isolating device
The outlet line of first output end and second output terminal.
The beneficial effects of the present invention are: the present invention utilizes the unsteady flow mould in bypass isolating device control cascade connection type converter system
Block makes leading between the first input end and the second input terminal that bypass isolating device when cascade connection type converter system operates normally
It is electrical connectors be in the state of being disconnected, is made between first input end and the first output end, between the second input terminal and second output terminal
It is respectively at conductive connection state, when receiving control information, makes the first input end for bypassing isolating device and the second input
It is formed and is conductively connected between end, realize the bypass functionality of bypass isolating device, will become using the bypass functionality of bypass isolating device
Flow module bypass, is bypassed and then makes the first output end and the outlet line of second output terminal to be broken completely in unsteady flow module
It opens, realizes the isolation features of bypass isolating device, utilize the electricity where the isolation features disjunction unsteady flow module of bypass isolating device
Air circuit realizes that the high_voltage isolation of unsteady flow module can tie up online unsteady flow module after unsteady flow module is by high_voltage isolation
Shield, entire maintenance process are not necessarily to system-down, system reliability can be improved, it is ensured that the safety of on-line maintenance.
Detailed description of the invention
Fig. 1 is the structural block diagram of the bypass isolating device shown in the embodiment of the present invention；
Fig. 2 is the composition block diagram of the bypass isolating device shown in the embodiment of the present invention；
Fig. 3 is the connection relationship diagram of the bypass isolating device and unsteady flow module shown in the embodiment of the present invention；
Fig. 4 is a kind of bypass isolating device composed structure schematic diagram shown in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the cascade connection type converter system shown in the embodiment of the present invention；
Fig. 6 is the control method flow chart of the cascade connection type converter system shown in the embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Hereinafter, will be described with reference to the accompanying drawings the embodiment of the present invention.However, it should be understood that these descriptions are only exemplary
, and be not intended to limit the scope of the invention.In addition, in the following description, descriptions of well-known structures and technologies are omitted, with
Avoid unnecessarily obscuring idea of the invention.
Term as used herein is not intended to limit the present invention just for the sake of description specific embodiment.Used here as
Word " one ", " one (kind) " and "the" etc. also should include " multiple ", " a variety of " the meaning, unless in addition context clearly refers to
Out.In addition, the terms "include", "comprise" as used herein etc. show the presence of the feature, step, operation and/or component,
But it is not excluded that in the presence of or add other one or more features, step, operation or component.
There are all terms (including technical and scientific term) as used herein those skilled in the art to be generally understood
Meaning, unless otherwise defined.It should be noted that term used herein should be interpreted that with consistent with the context of this specification
Meaning, without that should be explained with idealization or excessively mechanical mode.
Cascade connection type converter system generallys use unsteady flow block coupled in series to realize High voltage output, because of this cascade connection type unsteady flow system
System need to be used compared with multiple-variable flow module, and the probability that unsteady flow module breaks down can increase therewith, therefore when many producer's designing systems
Meet the bypass operation of unsteady flow module failure, there are allowance to improve the reliability of system.But because of design cost and it is
The requirement that nominal situation of uniting is run, the bypass series of unsteady flow module is limited, when breaking down again, it is necessary to shutdown processing is carried out,
It is unexpected that shutdown may bring more serious loss.
The present invention is directed to above situation, provides a kind of bypass isolating device, can be with based on bypass isolating device of the invention
When cascade connection type converter system is in operating status, on-line maintenance is carried out to unsteady flow module, guarantees the reliability of system.
Fig. 1 is the structural block diagram of the bypass isolating device shown in the embodiment of the present invention, as shown in Figure 1, the side of the present embodiment
Road isolating device includes: including first input end, the second input terminal, the first output end, second output terminal and control terminal, and first is defeated
Entering end and exchanges input for connecting with the second input terminal, the first output end exchanges input for exporting with second output terminal, and first
Conductive connection between input terminal and the second input terminal is in an off state, between first input end and the first output end, second
Conductive connection state is respectively between input terminal and second output terminal, control terminal is for receiving control signal；
Bypass isolating device, according to the received control information of control terminal, the shape between first input end and the second input terminal
It is formed after conductive connection at conductive connection, and between first input end and the second input terminal, disconnects the first output end and two
The outlet line of output end.
With reference to Fig. 3, when the bypass isolating device of the present embodiment is used for cascade connection type converter system, the of isolating device is bypassed
One input terminal and the second input terminal are connected to the ac circuit of the cascade branch where bypass isolating device, bypass isolating device
First output end exchanges side first port and second port with second output terminal connection unsteady flow module.
When bypass isolating device is applied to cascade connection type converter system, when cascade connection type converter system operates normally, bypass
Conductive connection between the first input end of isolating device and the second input terminal, which is in, is disconnected state, first input end and first
Conductive connection state is respectively between output end, between the second input terminal and second output terminal, so that is isolated with bypass
The associated unsteady flow module of device can operate normally.When needing to carry out on-line maintenance to unsteady flow module, isolating device meeting is bypassed
Control information is received, according to the control information, makes to be formed between first input end and the second input terminal and is conductively connected, and the
It is formed between one input terminal and the second input terminal after being conductively connected, disconnects the output line of the first output end and second output terminal
Road, so that unsteady flow module can be with on-line maintenance.
The present embodiment is using the unsteady flow module in bypass isolating device control cascade connection type converter system, in cascade connection type unsteady flow system
When system operates normally, it is in the conductive connection between the first input end and the second input terminal that bypass isolating device and is disconnected shape
State makes between first input end and the first output end, is respectively at conductive connection shape between the second input terminal and second output terminal
State makes to bypass formation between the first input end and the second input terminal of isolating device and is conductively connected when receiving control information,
The bypass functionality for realizing bypass isolating device, using the bypass functionality of bypass isolating device by unsteady flow module bypass, in unsteady flow mould
Block is bypassed and then is disconnected completely the outlet line of the first output end and second output terminal, realizes bypass isolating device
Isolation features, utilize bypass isolating device isolation features disjunction unsteady flow module where electric loop, realize unsteady flow module
High_voltage isolation can carry out on-line maintenance to unsteady flow module, entire maintenance process be not necessarily to after unsteady flow module is by high_voltage isolation
System reliability can be improved in system-down, it is ensured that the safety of on-line maintenance.
Fig. 2 is the composition block diagram of the bypass isolating device shown in the embodiment of the present invention, and Fig. 3 is shown in the embodiment of the present invention
The connection relationship diagram of isolating device and unsteady flow module is bypassed, as Figure 2-3, the bypass isolating device in the present embodiment is also
Including bypass module and isolation module；
The first port of bypass module connects first input end, and the second port of bypass module connects the second input terminal, other
The third port of road module connects control terminal；The first port of isolation module connects first input end, the second end of isolation module
Mouth the second input terminal of connection, the third port of isolation module connect control terminal, the first output of the 4th port connection of isolation module
The fifth port at end, isolation module connects second output terminal；Grade where first input end and the second input terminal connection unsteady flow module
Joining the ac circuit of branch, the first output end exchanges side first port and second port with second output terminal connection unsteady flow module,
Control terminal connects control system.
When unsteady flow module operates normally, the interface unit of bypass module is in an off state, the isolator of isolation module
Part is in closed state, and when unsteady flow module is in on-line maintenance state, the interface unit of bypass module is in closed state, every
Isolating device from module is in an off state.
Wherein, bypass module is closed the interface unit in bypass module according to the closure signal that control system issues, and will become
Flow module bypass, the isolating device in breaking signal disconnection isolation module that isolation module is issued according to control system, disjunction the
The outlet line of one output end and second output terminal disconnects the first output end, second output terminal and the change of bypass isolating device
Connection line between flow module carries out high_voltage isolation to unsteady flow module.
In an embodiment of the present invention, the interface unit in bypass module, which can be, manually controls device, is also possible to certainly
Movement controller part, the interface unit in bypass module can be one of breaker, contactor or electronic switch.For example, working as
When interface unit in bypass module is electronic switch, it is closed in bypass module automatically according to the close command that control system issues
Electronic switch；It can also be automatically controlled since contactor or breaker are both manually controllable, the company in bypass module
When to connect device be contactor or breaker, when control system issues closure signal, it can utilize contactor or breaker
Signal is controlled, excites the control of contactor or breaker as maintenance man can press control button in the range far from higher-pressure region
Signal, contactor or breaker in manual closing bypass module, the close command that can also be issued according to control system are automatic
The contactor or breaker being closed in bypass module.
In an embodiment of the present invention, the isolating device in isolation module, which can be, manually controls device, is also possible to certainly
Movement controller part, the isolating device in isolation module can be breaker, contactor, isolation switch, electronic switch or quickly connect
Connect one of device.As shown in figure 4, when the isolation module in the present embodiment disconnects two breakpoints need to be formed, to disconnect unsteady flow mould
Electric loop where block.
In one example of the present embodiment, when isolating device is isolation switch, breaker, contactor or quick connector etc.
When manually controlling device, for example, the isolation switch or selection of two hilted broadswords can be selected when isolating device is isolation switch
The isolation switch of one double-pole, with reference to Fig. 4, since isolation switch is to manually control device, the disjunction that control system issues at this time
Signal, which can be instruction, can disconnect the disjunction indication signal of isolation module, and maintenance person can know isolation according to disjunction indication signal
Module is in can disjunction state.
In one example of the present embodiment, when isolating device is the automatic controllers such as electronic switch, breaker or contactor
When part, for example, when the electronic switch for selecting controllable two breakpoints to cut-off, with reference to Fig. 4, since electronic switch is to automatically control
Device, the control terminal of electronic switch should connect control system at this time, control electronic cutting by the breaking signal that control system issues
Turn off the disconnection of point.It is understood that for the electronic switch that only a breakpoint can control to cut-off, isolation module need to select two
The control terminal of the electronic switch that a single-break is cut-off, the electronic switch that each single-break is cut-off is all connected with control system.
Fig. 5 is the structural schematic diagram of the cascade connection type converter system shown in the embodiment of the present invention, as shown in figure 5, the present embodiment
Cascade connection type converter system include: three-phase cascade branch and control system；
Every phase cascade branch is connected in series by multiple unsteady flow modules in exchange side, the exchange side first end of each unsteady flow module
Mouth and second port are connect with the first output end of bypass isolating device and second output terminal respectively, bypass the first of isolating device
Input terminal and the second input terminal connect the ac circuit of every phase cascade branch；Control system respectively with each unsteady flow module relation
The control terminal connection of isolating device is bypassed, control system can be sent out by bypassing the control terminal of isolating device to bypass isolating device
Various control information are sent, the status information of bypass isolating device can also be obtained by bypassing the control terminal of isolating device, is such as obtained
Take the status information of isolation module and bypass module.Bypass isolating device can join with unsteady flow module, the connection type of control system
It sees above, details are not described herein again.
The control system of the present embodiment includes display module, and the display module of the present embodiment can show that unsteady flow module was safeguarded
The status information of each unsteady flow module in journey, bypass module, isolation module associated by unsteady flow module.
For the display module of the present embodiment when control system issues closure signal, display can be closed the side of bypass isolating device
Road module, and after bypass module closure, display unsteady flow module has bypassed；And breaking signal is being issued in control system
When, display can disjunction bypass isolating device isolation module, and after isolation module disjunction, display unsteady flow module can be tieed up online
Shield.
Corresponding with cascade connection type converter system of the present invention, the embodiment of the invention also provides a kind of cascade connection type converter systems
Control method.
Fig. 6 is the control method flow chart of the cascade connection type converter system shown in the embodiment of the present invention, the cascade of the present embodiment
The composed structure of type converter system can be found in above description, and details are not described herein.Wherein, when cascade connection type converter system is run,
The conductive connection being arranged between the first input end and the second input terminal of bypass isolating device is in an off state, bypass isolation dress
Distinguish between the first input end and the first output end set, between the second input terminal and second output terminal of bypass isolating device
In the state of conductive connection.
As shown in fig. 6, the control method of the present embodiment includes:
S610 receives control information using the control terminal of bypass isolating device.
S620 is formed between first input end and the second input terminal and is conductively connected, and is defeated first according to the control information
Enter and formed after conductive connection between end and the second input terminal, disconnects the outlet line of the first output end and second output terminal.
The closure signal that the present embodiment is issued according to control system, closure bypass the connector of bypass module in isolating device
Part, and the closed state information of bypass module is sent to control system, make control system according to closed state delivering point
Break signal；And the breaking signal issued according to control system, the isolating device of isolation module in bypass isolating device is disconnected,
And the disjunction status information of isolation module is sent to control system, so that control system is issued unsteady flow mould according to disjunction status information
Block safeguards status signal.
The closure signal of the present embodiment it is to be understood that when the interface unit in bypass module is to manually control device,
Closure signal is closure indication signal, the flash signal of such as controllable indicator light flashing or the color of control instructions lamp bright light color
Signal；When the interface unit in bypass module is automatic control device, closure signal is closure control instruction, based on closure control
The disconnection and closure of system instruction control connector part.
The breaking signal of the present embodiment it is to be understood that when the isolating device in isolation module is to manually control device,
Breaking signal is disjunction indication signal, the flash signal of such as controllable indicator light flashing or the color of control instructions lamp bright light color
Signal；When the isolating device in isolation module is automatic control device, breaking signal is disjunction control instruction, is based on disjunction control
The disconnection and closure of system instruction control isolating device.
Closed state information in the present embodiment includes the lasting closing time of bypass module, when persistently closing for bypass module
When closing the time greater than preset time threshold, control system issues breaking signal, and display can disjunction isolation mode in control system
Block guarantees that isolation module can safe disjunction unsteady flow module to guarantee that the bypass condition of unsteady flow module is not a wrong signal
The electric loop at place.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in the embodiment of invention, use " first ",
Printed words such as " second " distinguish function and the essentially identical identical entry of effect or similar item, and those skilled in the art can manage
The printed words such as solution " first ", " second " are not defined quantity and execution order.
The above description is merely a specific embodiment, under above-mentioned introduction of the invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
Body description only preferably explains that the purpose of the present invention, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of bypass isolating device for cascade connection type converter system, which is characterized in that including first input end, the second input
End, the first output end, second output terminal and control terminal, the first input end and the second input terminal are inputted for connecting exchange,
First output end and second output terminal for export it is described exchange input, between the first input end and the second input terminal
Conductive connection be in an off state, between the first input end and the first output end, second input terminal and second defeated
Conductive connection state is respectively between outlet, the control terminal is for receiving control signal；
The bypass isolating device is inputted according to the received control information of the control terminal in the first input end and second
It is formed and is conductively connected between end, and formed after conductive connection between the first input end and the second input terminal, disconnect institute
State the outlet line of the first output end and the second output terminal.
2. bypass isolating device according to claim 1, which is characterized in that further include bypass module and isolation module；
First port, second port and the third port of the bypass module are separately connected the first input end, described second
Input terminal and the control terminal；
First port, second port and the third port of the isolation module are separately connected the first input end, described second
Input terminal and the control terminal, the 4th port of the isolation module and fifth port are separately connected the first output end and second defeated
Outlet.
3. bypass isolating device according to claim 2, which is characterized in that
The bypass module is closed the interface unit in the bypass module according to the closure signal that control system issues；
The isolation module disconnects the isolating device in the isolation module, disjunction according to the breaking signal that control system issues
The outlet line of first output end and second output terminal.
4. bypass isolating device according to claim 3, which is characterized in that the interface unit in the bypass module includes
One of breaker, contactor or electronic switch.
5. bypass isolating device according to claim 3, which is characterized in that the isolating device in the isolation module is disconnected
One of road device, contactor, isolation switch, electronic switch or quick connector.
6. a kind of cascade connection type converter system characterized by comprising three-phase cascades branch and control system；
Every phase cascade branch is connected in series by multiple unsteady flow modules in exchange side, the exchange side first port of each unsteady flow module and
Second port connects with the first output end of the described in any item bypass isolating devices of claim 1-5 and second output terminal respectively
It connects, the first input end of the bypass isolating device and the ac circuit of the corresponding cascade branch of the second input terminal connection；The control
System processed is connect with the control terminal of the bypass isolating device of each unsteady flow module relation respectively.
7. cascade connection type converter system according to claim 6, which is characterized in that the control system includes display module；
For the display module when the control system issues closure signal, display can be closed the bypass of the bypass isolating device
Module, and after bypass module closure, show that the unsteady flow module has bypassed；And disjunction letter is issued in the control system
Number when, display can bypass the isolation module of isolating device described in disjunction, and after isolation module disjunction, show the unsteady flow mould
Block can on-line maintenance.
8. a kind of control method of cascade connection type converter system, which is characterized in that the cascade connection type converter system be claim 6 or
Cascade connection type converter system described in 7, in cascade connection type converter system operation, the first input end of setting bypass isolating device
Conductive connection between the second input terminal is in an off state, bypass isolating device first input end and the first output end it
Between, bypass isolating device the second input terminal and second output terminal between be respectively at conductive connection state；The controlling party
Method includes:
Control information is received using the control terminal of bypass isolating device；
It according to the control information, is formed and is conductively connected between the first input end and the second input terminal, and described the
It is formed between one input terminal and the second input terminal after being conductively connected, disconnects the output of first output end and second output terminal
Route.
9. control method according to claim 8, which is characterized in that
According to the closure signal that the control system issues, it is closed the interface unit of bypass module in the bypass isolating device,
And the closed state information of bypass module is sent to the control system, believe that the control system according to the closed state
Breath issues breaking signal；
According to the breaking signal that the control system issues, the isolating device of isolation module in the bypass isolating device is disconnected,
And the disjunction status information of isolation module is sent to the control system, believe that the control system according to the disjunction state
The breath sending unsteady flow module safeguards status signal.
10. control method according to claim 9, which is characterized in that the closed state information includes bypass module
Continue closing time, when the lasting closing time of the bypass module is greater than preset time threshold, the control system is issued
The breaking signal, and display can isolation module described in disjunction in control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810841482.1A CN109039041A (en) | 2018-07-27 | 2018-07-27 | For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810841482.1A CN109039041A (en) | 2018-07-27 | 2018-07-27 | For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109039041A true CN109039041A (en) | 2018-12-18 |
Family
ID=64646045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810841482.1A Pending CN109039041A (en) | 2018-07-27 | 2018-07-27 | For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109039041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146933A (en) * | 2020-01-20 | 2020-05-12 | 广州智光电气技术有限公司 | Online maintenance device, cascade type converter system and online maintenance method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578130A (en) * | 2015-01-08 | 2015-04-29 | 南京南瑞继保电气有限公司 | Hybrid direct-current transmission converter and direct-current transmission device |
| CN106786713A (en) * | 2016-11-25 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of voltage source converter unit topological structure and control method |
| CN107154632A (en) * | 2017-06-22 | 2017-09-12 | 特变电工西安电气科技有限公司 | A kind of recognition methods of power unit by-pass state |
| CN107732954A (en) * | 2017-11-22 | 2018-02-23 | 南京南瑞继保电气有限公司 | A kind of online input control method and device of voltage source converter unit |
-
2018
- 2018-07-27 CN CN201810841482.1A patent/CN109039041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578130A (en) * | 2015-01-08 | 2015-04-29 | 南京南瑞继保电气有限公司 | Hybrid direct-current transmission converter and direct-current transmission device |
| CN106786713A (en) * | 2016-11-25 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of voltage source converter unit topological structure and control method |
| CN107154632A (en) * | 2017-06-22 | 2017-09-12 | 特变电工西安电气科技有限公司 | A kind of recognition methods of power unit by-pass state |
| CN107732954A (en) * | 2017-11-22 | 2018-02-23 | 南京南瑞继保电气有限公司 | A kind of online input control method and device of voltage source converter unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146933A (en) * | 2020-01-20 | 2020-05-12 | 广州智光电气技术有限公司 | Online maintenance device, cascade type converter system and online maintenance method thereof |
| CN111146933B (en) * | 2020-01-20 | 2024-05-10 | 广州智光电气技术有限公司 | Online maintenance device, cascading type variable flow system and online maintenance method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209119892U (en) | Diesel-driven generator automatic starting circuit for Hydroelectric Plant electricity system | |
| CN106655898A (en) | Electric reactor cabinet control circuit | |
| CN104283263A (en) | Direct-current charging pile main circuit double-control power supply system and control method thereof | |
| CN109039041A (en) | For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method | |
| CN105552883A (en) | Control method and system for converting to paralleling operation from splitting operation of three-bus segmented substation | |
| CN105932927A (en) | Automatic control device for AC power phase sequence of air compressor | |
| CN103647280B (en) | The method that the intelligent liaison controller that supplies power with double circuit controls electric power system | |
| CN108880291A (en) | For the bypass isolating device of cascade connection type converter system, cascade connection type converter system and control method | |
| CN104863835A (en) | Air compressor control method and system | |
| CN104076209A (en) | Detection device for motor | |
| CN201407161Y (en) | Spare automatic switching control system with multi-circuit power supply and multiple water pumps | |
| CN214411096U (en) | Switching-on and switching-off driving and controlling device of intelligent circuit breaker | |
| CN211046803U (en) | Star-delta voltage reduction starting circuit | |
| CN204068769U (en) | A kind of control loop no-harass switch device of low voltage motor | |
| CN1107189A (en) | Shortcircuiting system for use in monopolar and bipolar electrolyzers | |
| CN209505472U (en) | The safety control and AGV trolley of AGV trolley | |
| CN201611861U (en) | Star-delta reduced voltage starter of electromotor | |
| CN105429141A (en) | Control method and system for substation bus from independent operation to parallel operation | |
| CN111338258A (en) | Control circuit and control method for low-voltage alternating-current control loop in power supply voltage abnormity | |
| CN207442421U (en) | A kind of microcomputer protecting device | |
| KR102033751B1 (en) | Watt hour meter with switch | |
| CN206775427U (en) | Threephase asynchronous based on monitoring and controlling circuit breaking | |
| CN205792332U (en) | Air compressor alternating current power supply phase sequence automaton | |
| JP2007195348A (en) | System linkage ac-dc converter | |
| JP2022500981A (en) | Power supply device and power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |