CN207691416U - Intensive DC de-icing device SVG power module bypass structures - Google Patents
Intensive DC de-icing device SVG power module bypass structures Download PDFInfo
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- CN207691416U CN207691416U CN201721205472.6U CN201721205472U CN207691416U CN 207691416 U CN207691416 U CN 207691416U CN 201721205472 U CN201721205472 U CN 201721205472U CN 207691416 U CN207691416 U CN 207691416U
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- power module
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- icing device
- motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The utility model discloses a kind of intensive DC de-icing device SVG power module bypass structures, including fast chopper, motor-operating mechanism, communication control module and direct-current switch power supply, fast chopper is connected in parallel on the DC output end of power module, the control output end of motor-operating mechanism is connected with the control terminal of fast chopper, and motor-operating mechanism is connected with communication control module, the output end of direct-current switch power supply is connected with motor-operating mechanism, communication control module respectively；The control of bypass structure can detect the quantity of state of power module by communication control module, and the state change of power module is judged according to quantity of state, the on off state of fast chopper is controlled according to the state change of power module, realizes the power module of the intensive DC de-icing device SVG auto by pass in failure.The utility model has the advantages that simple in structure, dependable performance, cost economy, safe and reliable, easy to implement quick.
Description
Technical field
The utility model is related to electrical engineering technologies, and in particular to a kind of intensive style DC de-icing device SVG power modules
Bypass structure.
Background technology
DC ice melting be transmission line of electricity resist freezing rain and snow disaster most directly effective means, in winter the icing phase try hard to keep
The safe and stable operation of bulk power grid is hindered.Intensive DC de-icing device is to have had both dynamic reactive on the basis of DC ice melting
Compensation function, no-power compensation function are realized by SVG.Therefore dynamic passive compensation, pole can be carried out to power grid in non-icing phase device
The earth improves utilization ratio of device.Mainstream SVG structures are chain structure at present, and each chain link is by N number of identical power module string
Connection constitute, power module core be H bridge structure inversion units, according to the different connection types between chain and chain may make up Y types or
△ types.
Since chain link is cascaded structure, the change of breaking down of single power module can lead to entire chain link operation irregularity, SVG quilts
Compel out of service.Therefore in order to improve the operational reliability of SVG, the frequent switching of device is reduced, if should be arranged in each chain link
Dry redundant power cells.When less than the power cell failure of redundancy number, fault power unit realizes bypass automatically,
Normal cell continues to run with, and ensures chain link normal work.When the power cell quantity being only bypassed is more than redundancy number, device
When chain link failure, device is answered out of service.Therefore it needs, for simple, reliable, the economic bypass circuit of power cell design, to carry
High device serious forgiveness ensures that SVG is reliable, stable operation.
Bypass structure design at present is divided into two classes, electronic bypass and mechanical by-pass.Electronic bypass can be used it is additional it is anti-simultaneously
The controllable devices such as the thyristor or IGBT of connection constitute bypass path, the driving pulse of IGBT in H bridges are blocked when breaking down, together
When to pass devices continuously send out driving pulse, form access and complete bypass.Electronic bypass quick action, but disadvantage is side
The operating voltage of road device need to be similarly configured with electric current with module, and of high cost and poor reliability, controllable devices are once damaged,
Bypass is then caused to be failed.The reliability of mechanical by-pass is far above electronic bypass, but mostly uses routine in mechanical by-pass structure at present
Single phase ac vacuum circuit breaker is equipped with magnetic actuator, is discharged electromagnetic coil using capacitance and realizes divide-shut brake.This bypass
Structure is complex, and volume is big, of high cost, it is difficult to promote the use of a large area.
Utility model content
The technical problems to be solved in the utility model：For the above problem of the prior art, a kind of simple in structure, property is provided
It can reliable, cost economy intensive DC de-icing device SVG power module bypass structures.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of intensive style DC de-icing device SVG power module bypass structures, including fast chopper, electric operating machine
Structure, communication control module and direct-current switch power supply, the fast chopper are connected in parallel on the power of intensive DC de-icing device SVG
The DC output end of module, the control output end of the motor-operating mechanism are connected with the control terminal of fast chopper, and described
Motor-operating mechanism is connected with communication control module, the output end of the direct-current switch power supply respectively with motor-operating mechanism, control
Communication module processed is connected.
Preferably, the input terminal of the direct-current switch power supply is also associated with energy-storage units, and the output end of energy-storage units is also
It is connected respectively with motor-operating mechanism, communication control module.
Preferably, the fast chopper is three-phase breaker of plastic casing, and the three-phase input of the three-phase breaker of plastic casing
End and three-phase output end are used in parallel.
Preferably, the execution unit of the motor-operating mechanism is low-voltage driving type direct current generator, the low-voltage driving type
Direct current generator with and communication control module be connected to export the status signal of fast chopper.
Preferably, the communication control module is FPGA optical fiber communication modules.
Preferably, the direct-current switch power supply is DC-DC conversion circuits, and the power input of the direct-current switch power supply
It is connected with energy-storage units.
Preferably, the energy-storage units form for super capacitor.
The intensive DC de-icing device SVG power module bypass structures tool of the utility model has the advantage that：This practicality
Novel bypass structure includes fast chopper, motor-operating mechanism, communication control module and direct-current switch power supply, is quick break
Device is connected in parallel on the DC output end of the power module of intensive DC de-icing device SVG, the control output end of motor-operating mechanism
It is connected with the control terminal of fast chopper, and motor-operating mechanism is connected with communication control module, the output of direct-current switch power supply
End be connected respectively with motor-operating mechanism, communication control module, the bypass structure apparatus structure simply, reliable operation, can be in work(
Rate module is latched IGBT driving pulses inside power module and quickly completes bypass simultaneously in the case of breaking down, prevent power
Module is damaged, and avoid intensive DC de-icing device causes device integrally out of service because of individual abnormal modules, pole
The earth improves the functional reliability of device.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of the bypass structure of the utility model embodiment
Marginal data：1, fast chopper；2, motor-operating mechanism；3, communication control module；4, direct-current switch power supply；5、
Energy-storage units.
Specific implementation mode
As shown in Figure 1, the intensive DC de-icing device SVG power module bypass structures of the present embodiment include quicking break
Device 1, motor-operating mechanism 2, communication control module 3 and direct-current switch power supply 4, fast chopper 1 are connected in parallel on intensive direct current and melt
The DC output end of the power module of ice production apparatus SVG, the control of the control output end and fast chopper 1 of motor-operating mechanism 2
End is connected, and motor-operating mechanism 2 is connected with communication control module 3, the output end of direct-current switch power supply 4 respectively with electric operating
Mechanism 2, communication control module 3 are connected.Label A is power module in Fig. 1, and B is bypass structure.
In the present embodiment, the input terminal of direct-current switch power supply 4 is also associated with energy-storage units 5, and the output end of energy-storage units 5
Also it is connected respectively with motor-operating mechanism 2, communication control module 3.Energy-storage units 5 are when direct-current switch power supply 4 breaks down
Communication control module and motor-operating mechanism provide instantaneous stand-by power supply, avoid because direct-current switch power supply 4 failure due to cause this reality
Applying the intensive DC de-icing device SVG power modules bypass structure of example can not act.
In the present embodiment, fast chopper 1 is three-phase breaker of plastic casing, and the three-phase input of the three-phase breaker of plastic casing
End and output end are used in parallel, to realize that through-current capability is promoted.
In the present embodiment, the execution unit of motor-operating mechanism 2 is low-voltage driving type direct current generator, low-voltage driving type direct current
Motor with and communication control module 3 be connected to export the status signal of fast chopper 1.
In the present embodiment, communication control module 3 is FPGA optical fiber communication modules, FPGA optical fiber communication modules signal transmission speed
Rate is high, low in energy consumption, is communicated through optical fiber and higher level's switch board, realizes electrical isolation, avoid signal transmission by electromagnetic interference.
In the present embodiment, direct-current switch power supply 4 be DC-DC conversion circuits, and the power input of direct-current switch power supply 4 with
Energy-storage units 5 are connected.
In the present embodiment, energy-storage units 5 form for super capacitor.Energy-storage units 5 using super capacitor as energy-storage travelling wave tube,
Small, energy storage density is high, and 5 interior design of energy-storage units has protection circuit, for preventing input voltage excessively high or voltage pole
Property mistake causes energy-storage units to damage.
The implementation steps packet of the control method of the intensive DC de-icing device SVG power module bypass structures of the present embodiment
It includes：
1) by the quantity of state of the power module of the intensive DC de-icing device SVG of communication control module detection, and according to
Quantity of state judges the state change of the power module of intensive DC de-icing device SVG, if intensive DC de-icing device SVG
Power module break down, then redirect execute step 2)；If the power module work of intensive DC de-icing device SVG is just
Often, then it redirects and executes step 5)；
2) whether communication control module detection current failure power module is less than with the sum of the power module quantity that has bypassed n
Power module redundant configuration quantity N is redirected if meeting and is executed step 3)；If being unsatisfactory for, redirects and execute step 7)；
3) control of the communication control module to motor-operating mechanism and the power module of intensive DC de-icing device SVG
Device sends bypass actuating signal；After the controller of the power module of intensive DC de-icing device SVG receives bypass actuating signal
It is latched IGBT driving pulses inside power module；
4) power supply is provided for motor-operating mechanism by direct-current switch power supply, motor-operating mechanism is receiving bypass action letter
Fast chopper closure is controlled after number at once, by the DC output end short circuit of the power module of intensive DC de-icing device SVG,
So that the power module of intensive DC de-icing device SVG is bypassed；It redirects and executes step 1)；
5) control of the communication control module to motor-operating mechanism and the power module of intensive DC de-icing device SVG
Device sends recovery action signal；After the controller of the power module of intensive DC de-icing device SVG receives recovery action signal
Unlock IGBT driving pulses inside power module；
6) power supply is provided for motor-operating mechanism by direct-current switch power supply, motor-operating mechanism is receiving recovery action letter
Fast chopper disconnection is controlled after number at once, the DC output end of the power module of intensive DC de-icing device SVG is restored,
So that the power module of intensive DC de-icing device SVG normally exports；It redirects and executes step 1)；
7) communication control module is latched IGBT driving pulses inside all power modules, sends out lead-in circuit breaker tripping life
It enables, connects power module storage capacitor and let out energy circuit, device is out of service.
The control method of the intensive DC de-icing device SVG power module bypass structures of the present embodiment is sent out in power module
In the case of raw failure, motor-operating mechanism 2 is controlled by communication control module 3 and is worked, realizes 1 quick-make of fast chopper,
Power module is completed reliably to bypass, it can IGBT driving pulses be simultaneously inside lock modules in the case where power module breaks down
Bypass is quickly completed, power module is prevented to be damaged, intensive DC de-icing device is avoided and is led because of individual abnormal modules
It causes device integrally out of service, greatly improves the functional reliability of device.
In the present embodiment, the input terminal of direct-current switch power supply 4 is also associated with energy-storage units 5, and the output end of energy-storage units 5
Also it is connected respectively with motor-operating mechanism 2, communication control module 3；By direct-current switch power supply 4 it is electricity in step 4) and step 6)
Further include the working condition for detecting direct-current switch power supply 4 when pneumatic operating mechanism 2 provides power supply, if direct-current switch power supply 4 is sent out
Raw failure then directly provides power supply by energy-storage units 5 for motor-operating mechanism 2.It is sent out in direct-current switch power supply 4 to realize
When raw failure, communication module and motor-operating mechanism provide instantaneous stand-by power supply in order to control, avoid because of 4 failure of direct-current switch power supply
And cause the intensive DC de-icing device SVG power modules bypass structure of the present embodiment that can not act.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of intensive style DC de-icing device SVG power module bypass structures, it is characterised in that：Including fast chopper (1),
Motor-operating mechanism (2), communication control module (3) and direct-current switch power supply (4), the fast chopper (1) are connected in parallel on intensive
The DC output end of the power module of type DC de-icing device SVG, the control output end of the motor-operating mechanism (2) and quickly
The control terminal of breaker (1) is connected, and the motor-operating mechanism (2) is connected with communication control module (3), the dc switch
The output end of power supply (4) is connected with motor-operating mechanism (2), communication control module (3) respectively.
2. intensive style DC de-icing device SVG power module bypass structures according to claim 1, it is characterised in that：Institute
The input terminal for stating direct-current switch power supply (4) is also associated with energy-storage units (5), and the output end of energy-storage units (5) also respectively with electricity
Pneumatic operating mechanism (2), communication control module (3) are connected.
3. intensive style DC de-icing device SVG power module bypass structures according to claim 1, it is characterised in that：Institute
It is three-phase breaker of plastic casing to state fast chopper (1), and the three-phase input end of the three-phase breaker of plastic casing and output end are simultaneously
Connection uses.
4. intensive style DC de-icing device SVG power module bypass structures according to claim 1, it is characterised in that：Institute
The execution unit for stating motor-operating mechanism (2) is low-voltage driving type direct current generator, the low-voltage driving type direct current generator and and control
Communication module (3) processed is connected to export the status signal of fast chopper (1).
5. intensive style DC de-icing device SVG power module bypass structures according to claim 1, it is characterised in that：Institute
It is FPGA optical fiber communication modules to state communication control module (3).
6. intensive style DC de-icing device SVG power module bypass structures according to claim 1, it is characterised in that：Institute
Direct-current switch power supply (4) is stated as DC-DC conversion circuits, and the power input and energy-storage units of the direct-current switch power supply (4)
(5) it is connected.
7. intensive style DC de-icing device SVG power module bypass structures according to claim 2, it is characterised in that：Institute
Energy-storage units (5) are stated to form for super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721205472.6U CN207691416U (en) | 2017-09-20 | 2017-09-20 | Intensive DC de-icing device SVG power module bypass structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721205472.6U CN207691416U (en) | 2017-09-20 | 2017-09-20 | Intensive DC de-icing device SVG power module bypass structures |
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| CN207691416U true CN207691416U (en) | 2018-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546726A (en) * | 2017-09-20 | 2018-01-05 | 湖南省湘电试研技术有限公司 | Intensive DC de-icing device SVG power models bypass structure and its control method |
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2017
- 2017-09-20 CN CN201721205472.6U patent/CN207691416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546726A (en) * | 2017-09-20 | 2018-01-05 | 湖南省湘电试研技术有限公司 | Intensive DC de-icing device SVG power models bypass structure and its control method |
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