CN107465201A - A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact - Google Patents
A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact Download PDFInfo
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- CN107465201A CN107465201A CN201710944887.3A CN201710944887A CN107465201A CN 107465201 A CN107465201 A CN 107465201A CN 201710944887 A CN201710944887 A CN 201710944887A CN 107465201 A CN107465201 A CN 107465201A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 169
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact, including device cabinet, capacity reactance cabinet；Described device cabinet includes disconnecting switch, arrester, modular high-voltage capacitor fling-cut switch, interconnection system bus, discharge coil, current transformer, controller, Microcomputer Protection unit, high voltage insulation protective sleeve, high-voltage isulation connecting line；The capacity reactance cabinet includes high-voltage parallel capacitor, current-limiting reactor, high-voltage isulation connecting line, high voltage insulation protective sleeve；Device is linked together the special fling-cut switch of multigroup Modular capacitor using interconnection system bus, and each part is connected by high-voltage isulation connecting line in device, and junction and exposed live part carry out sealing using high voltage insulation protective sleeve.Using solid all insulation mode; substantially reduce the volume of device; the more subdivided capacitors for realizing device are set; device is set to carry out reactive balance automatically according to payload; compensation effect greatly promotes, and power factor is up to more than 0.95, while device uses cascade protection mode; divide level Four protection, substantially increase the reliability and safety of plant running.
Description
Technical field
The present invention relates to power system reactive power compensation technical field, and electric capacity is grouped in particular to a kind of compact more
Device formula High Voltage and Passive Automatic Compensation Device.
Background technology
With the fast development of social economy, electricity needs is also maintaining sustained and rapid growth.In electric network reconstruction and intelligent grid
Construction in, loss problem be always can not be ignored, larger reactive loss is particularly lost.Active service 220kV and following power transformation
Most of high-pressure reactive compensation device stood is compensated using single group or double group capacitor groups, and compensation effect is bad, if
Increase and compensated for multiple unit capacitor group, it will greatly increase the volume of device, increase floor space, it is nervous to take this
Transformer station area, and will cause dense population areas can not be met to safety requirements such as noise, fire, electromagnetic radiation.
Therefore, compact, intellectuality, the high-voltage parallel capacitor device that is grouped more are market active demands.
The content of the invention
It is an object of the invention to provide a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact, using mould
Block formula high-voltage capacitor fling-cut switch, the interconnection system bus of all insulation type, solid insulation technology etc. solve problem above, and realizing should
More packet automatic switching capacitors of the miniaturization of device, Low emissivity, low noise, while realization device, realize idle automatic
Balance, makes its reactive factor up to more than 0.95.
For the above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact, it is characterised in that including device cabinet, electric capacity electricity
Anti- cabinet；Described device cabinet includes disconnecting switch, arrester, modular high-voltage capacitor fling-cut switch, interconnection system bus, discharge lines
Circle, current transformer, controller, Microcomputer Protection unit, high voltage insulation protective sleeve, high-voltage isulation connecting line；The capacity reactance
Cabinet includes high-voltage parallel capacitor, current-limiting reactor, high-voltage isulation connecting line, high voltage insulation protective sleeve；
Described device cabinet is connected by high voltage cable with the breaker in capacitor outgoing line cabinet；In high voltage cable and described device cabinet
Disconnecting switch connection, the disconnecting switch, the arrester be connected with the interconnection system bus, the interconnection system mother
Line links together multigroup modular high-voltage capacitor fling-cut switch, and modular high-voltage capacitor switching is opened described in every group
Current transformer described in one group of Guan Jun series connection, is connected, the high-voltage parallel capacitor is connected with described with the current-limiting reactor
Reactor is connected, and the discharge coil is parallel on the high-voltage parallel capacitor and the current-limiting reactor；
The controller is arranged on the inside of the door of described device cabinet, and the controller is thrown with multigroup modular high-voltage capacitor
Cut connection to connect, be connected with the on-load voltage regulating switch of main transformer, with main transformer high-pressure side or the current transformer of low-pressure side
And its outlet connection；
The Microcomputer Protection unit and multigroup modular high-voltage capacitor fling-cut switch, the current transformer, described put
Electric coil is all connected with；
The controller is analyzed and processed according to the high-pressure side of the main transformer of input or voltage, the current signal of low-pressure side,
Compensating control signal is exported to the modular high-voltage capacitor fling-cut switch, controls the automatic throwing of the high-voltage parallel capacitor
Cut, balance is idle；The on-load voltage regulating switch for exporting Regulation Control signal to main transformer carries out the adjustment of voltage.
A preferred embodiment of the invention, all electrical cables of each building block use institute in device
State high-voltage isulation connecting line.
A preferred embodiment of the invention, except the disconnecting switch, all building blocks is electric in device
Junction and exposed live part use the high voltage insulation protective sleeve sealing.
A preferred embodiment of the invention, the Modular capacitor fling-cut switch are female by the interconnection system
Line is attached, and the interconnection system bus is a kind of solid insulated busbar, and its insulation is entered by the high voltage insulation protective sleeve
Row insulation sealing.
Cascade protection mode is taken in a preferred embodiment of the invention, the protection of device, altogether level Four protection；Bag
Include the first class of protection of the high-voltage parallel capacitor Internal fuse in device, three-phase capacitor voltage in the high-voltage parallel capacitor
Unbalanced second class protection, the three-level protective of high-voltage parallel capacitor excessively stream described in every group, the capacitor outgoing line cabinet outside device
The breaker excessively stream or fast tripping protection level Four protection.
A preferred embodiment of the invention, the high-voltage parallel capacitor are by multiple small capacitor connection in series-parallel
Form, an Internal fuse is all connected with the string section of each small capacitor, it is connected when small capacitor damage
The normal operation of Internal fuse fuse protection group high-voltage parallel capacitor.
A preferred embodiment of the invention, the damage of small capacitor described in the high-voltage parallel capacitor, with
Its Internal fuse connected fusing, the string section capacity reduce voltage rise, cause the phase electric capacity when multiple small capacitors damage
Device capacity reduces, voltage rise；The discharge coil has a secondary winding, and its secondary winding connection mode uses open-delta
Formula, when there is Voltage unbalance in the three-phase capacitor in the high-voltage parallel capacitor, the discharge coil secondary winding opening
Place's voltage is started from scratch rise；Microcomputer Protection unit described in the control source of the discharge coil opening, the Microcomputer Protection
Element analysis processing, if voltage is increased to the voltage protection value of setting, sends control signal to the high-voltage parallel capacitor
The corresponding modular high-voltage capacitor fling-cut switch, disconnects the group high-voltage parallel capacitor.
A preferred embodiment of the invention, the current transformer will detect the connected high pressure
The current signal of shunt capacitor inputs the Microcomputer Protection unit, the Microcomputer Protection element analysis processing, if current signal
It is abnormal, the modular high-voltage capacitor fling-cut switch corresponding to control signal to the high-voltage parallel capacitor is sent, is cut off
The group high-voltage parallel capacitor.
A preferred embodiment of the invention, the current transformer in the capacitor outgoing line cabinet will detect electricity
Be streamed to device outer controller, if current anomaly, controller is analyzed and processed, send control signal in limited time or fast shut-off
The breaker.
A preferred embodiment of the invention, the controller set control of pressure regulation and reactive-load compensation, institute
State controller to be analyzed and processed according to the main transformer high-pressure side detected or voltage, the current signal of low-pressure side, if voltage
When high, idle insufficient, the controller, which first sends Regulation Control signal, which carries out voltage adjustment, reduces voltage, then sends compensation control
Signal carries out the input of the high-voltage parallel capacitor to the modular high-voltage capacitor fling-cut switch, and balance is idle；It is if electric
When forcing down, be idle insufficient, the controller first sends compensating control signal to the modular high-voltage capacitor fling-cut switch and entered
The input of the row high-voltage parallel capacitor, balances idle, booster tension, and voltage is still after putting into the high-voltage parallel capacitor
Low, the controller sends Regulation Control signal and carries out voltage adjustment rise voltage again.
The beneficial effects of the invention are as follows in the case where not changing transformer station's high-pressure reactive compensation device floor space, realize
More packets of high-voltage parallel capacitor, reactive power is balanced, reduce loss, while devise the four-stage grading protection of device, greatly
The big security, reliability and durability for improving reactive power compensator.
Brief description of the drawings
Fig. 1 is a kind of principle schematic of the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention；
Fig. 2 is a kind of overall appearance structural representation of the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention
Figure；
Fig. 3 is a kind of internal structure schematic diagram of the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention；
Fig. 4 is multigroup modular high pressure in a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention
Capacitor switching switch passes through interconnection system bus connection structure schematic diagram；
Fig. 5 is the individual module formula high pressure in a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention
The structural representation of capacitor switching switch；
Fig. 6 is a kind of level Four protection philosophy signal of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact of the present invention
Figure；
Fig. 7 is traditional capacitor formula（Two group capacitors）The compensation effect schematic diagram of High Voltage and Passive Automatic Compensation Device；
Fig. 8 is a kind of more five groups of high-voltage parallel capacitors of subdivided capacitor formula High Voltage and Passive Automatic Compensation Device of compact of the present invention
Compensation effect schematic diagram.
Embodiment
Referring to Fig. 1,2,3, a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact, including device cabinet 1,
Capacity reactance cabinet 2；Device cabinet 1 includes disconnecting switch 3, arrester 4, interconnection system bus 5, modular high-voltage capacitor fling-cut switch
6th, current transformer 7, discharge coil 8, controller 9, Microcomputer Protection unit 10, high voltage insulation protective sleeve 11, high-voltage isulation connection
Line 12；Capacity reactance cabinet 2 includes high-voltage parallel capacitor 13, current-limiting reactor 14, high voltage insulation protective sleeve 11, high-voltage isulation company
Wiring 12；
Referring to Fig. 1, device cabinet 1 is connected by high voltage cable with the breaker 15 in capacitor outgoing line cabinet, high voltage cable and device
Disconnecting switch 3 in cabinet 1 is connected, and disconnecting switch 3, arrester 4 connect to be connected with interconnection system bus 5, and interconnection system bus 5 will be more
Group（Illustrate 5 groups）Modular high-voltage capacitor fling-cut switch 6 links together, every group of modular high-voltage capacitor fling-cut switch 6
Connect one group of current transformer 7, be connected with current-limiting reactor 14, high-voltage parallel capacitor 13 is connected with current-limiting reactor 14, is put
Electric coil 8 is parallel on high-voltage parallel capacitor 13 and current-limiting reactor 14；
Controller 9 is arranged on the inner side of the cabinet door of device cabinet, and multigroup（Illustrate 5 groups）Modular high-voltage capacitor fling-cut switch 6
Connection, is connected, the outlet with the current transformer and high and low pressure side of main transformer is connected with the on-load voltage regulating switch of main transformer；
As shown in Fig. 2 Microcomputer Protection unit 10 is arranged in device, the cabinet door of tape controller 9 is opened, is exactly Microcomputer Protection unit
10, and be dispersed with terminal block below, as shown in figure 1, Microcomputer Protection unit 10 with it is multigroup（Illustrate 5 groups）Modular high-voltage capacitance
Device fling-cut switch 6, current transformer 7, discharge coil 8 are all connected with.
Except disconnecting switch 3, in device once at the electrical connection of device and exposed live part uses high pressure
The sealing of insulating sheath 11, as shown in figure 3, each connecting node of modular high-voltage capacitor fling-cut switch 6 and miscellaneous part
High voltage insulation protective sleeve is used using the insulation sealing of high voltage insulation protective sleeve 11.1, each connecting node of discharge coil 8
11.2 insulation sealings, each connecting node of high-voltage parallel capacitor 13 use the insulation sealing of high voltage insulation protective sleeve 11.3,
Each connecting node of current-limiting reactor 14 uses the insulation sealing of high voltage insulation protective sleeve 11.4, and a device all in device
The electrical cable of part is connected using high-voltage isulation connecting line 12.
It is multigroup referring to Fig. 4（Illustrate 5 groups）Modular capacitor fling-cut switch 6 is attached by interconnection system bus 5, even
It is a kind of solid insulated busbar to connect formula bus 5, and it uses the insulation sealing that high voltage insulation protective sleeve 11.5 is carried out；Every group of modular
Capacitor switching switchs 6 live parts and carries out sealing using high voltage insulation protective sleeve 11.6, and its multigroup Modular capacitor is thrown
Cut and close 6 both ends to link together using the progress sealing of high voltage insulation protective sleeve 11.7,11.8.
Referring to Fig. 5, the schematic diagram of single group Modular capacitor fling-cut switch 6, it is illustrated that in be remove high voltage insulation protective sleeve
The internal structure of 11.5 interconnection system bus 5.
Referring to Fig. 1, controller 9 has gathered the control of pressure regulation and reactive-load compensation, and controller 9 is according to the main transformer constantly detected
The voltage of high-pressure side or low-pressure side, current signal are analyzed and processed, if voltage is high, idle insufficient, controller 9 first sends tune
Pressing control signal to main transformer on-load voltage regulating switch to carry out voltage adjustment reduces voltage, then sends compensating control signal to module
Formula high-voltage capacitor fling-cut switch 6 carries out the input of corresponding high-voltage parallel capacitor 13, and balance is idle；If voltage is low, it is idle not
When sufficient, controller 9 first sends compensating control signal to modular high-voltage capacitor fling-cut switch 6 and carries out corresponding high-voltage parallel electricity
The input of container 13, idle, booster tension is balanced, voltage is still low after putting into high-voltage parallel capacitor 13, and controller 9 is sent again
Regulation Control signal to main transformer on-load voltage regulating switch carries out voltage adjustment rise voltage.
As shown in fig. 6, the level Four protection of single group high-voltage parallel capacitor is only gived, every group of high-voltage parallel in actual motion
Capacitor has the level Four protection shown in Fig. 6.A kind of guarantor of the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact
Shield takes cascade protection mode, i.e. accident protection and error protection, accident protection by device outside capacitor occur in cabinet
Breaker 15 is protected, and error protection is carried out by the high-voltage parallel capacitor 13 in device itself and Microcomputer Protection unit 10
Protection.Protection is divided into level Four, includes the first class of protection of the Internal fuse 17 of device inner high voltage shunt capacitor 13, high-voltage parallel capacitor
The second class protection of three-phase capacitor Voltage unbalance in 13, the three-level of every group of excessively stream of high-voltage parallel capacitor 13 is protected in device
Shield, the level Four protection of the fast tripping protection of breaker 15 of device external capacitive body outgoing line cabinet.
First class of protection：Every group of high-voltage parallel capacitor 13 is formed by multiple connection in series-parallel of small capacitor 16 in device, every
An Internal fuse 17 is all connected with the string section of individual small capacitor 16, when the small capacitor 16 damages, connected Internal fuse
The normal operation of 17 this group of fuse protection high-voltage parallel capacitors 13.
Second class protection：Certain a string sections small capacitor 16 damages in high-voltage parallel capacitor 13, connected interior
After fuse 17 fuses, the capacity of the string section reduces voltage rise, when the small capacitor 16 of the string section has damage again, the appearance of the string section
Amount reduces voltage but also rise not only, continues to run with repetition said process.When the small capacitor 16 damages quantity increase, the group is high
The degree of unbalancedness of three-phase capacitor voltage in pressure shunt capacitor 13 will increase；
Discharge coil 8 has a secondary winding, its winding parallel in high-voltage parallel capacitor 13 and the both ends of current-limiting reactor 14,
Secondary winding is connected using open delta form, when its open delta is in the balance of voltage of this group of three-phase capacitor output be
Zero, when the voltage of the three-phase capacitor of high-voltage parallel capacitor 13 occurs uneven, the output voltage of its opening gradually rises
It is high.
The voltage signal of the secondary coil opening of discharge coil 8 input is input into Microcomputer Protection unit 10.1, is divided
Analysis is handled, when the voltage signal of its input is beyond the voltage protection value of setting, the output control signal of Microcomputer Protection unit 10.1
To modular high-voltage capacitor fling-cut switch 6 corresponding to this group of high-voltage parallel capacitor 13, this group of high-voltage parallel capacitor is disconnected
13 input.
Three-level protective：Current transformer 7 inputs the current signal for detecting connected high-voltage parallel capacitor 13
To Microcomputer Protection unit 10.2, Microcomputer Protection unit 10.2 analyzes and processes, if current signal is abnormal, sends control signal to the group
Modular high-voltage capacitor fling-cut switch 6, disconnects the throwing of this group of high-voltage parallel capacitor 13 corresponding to high-voltage parallel capacitor 13
Enter.Microcomputer Protection unit 10.1 and Microcomputer Protection unit 10.2, a Microcomputer Protection unit or two lists can be synthesized
Only Microcomputer Protection unit.
Level Four is protected：The controller that current transformer outside device inputs the current signal detected to outside device, its
Analyzed and processed, according to results of measuring, carry out in limited time or quick cut-off breaker, protection device are not damaged by.
Pass through Fig. 7 and Fig. 8, it can be seen that one kind of traditional capacitor formula High Voltage and Passive Automatic Compensation Device and the present invention is tight
The compensation effect contrast of the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of the type that gathers, because traditional compensation device is due to sky
Between, the reason such as reliability can not realize more packets, actual motion is substantially single group or double groups of high-voltage parallel capacitor, mended
Repay ineffective, be that the compensation device of the present invention is divided into five groups of high-voltage parallel capacitor such as Fig. 8, its compensation effect with regard to preferable,
Power factor up to more than 0.95, and its it is compact do not increase floor space, good practical effect, the level Four protection of device greatly increases
Security and reliability.
Described above is only the preferred embodiment of the present invention, it is noted that is come for those skilled in the art
Say, without departing from the technical principles of the invention, some changes and improvements can also be made, these changes and improvements also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact, it is characterised in that including device cabinet, electric capacity
Reactance cabinet；Described device cabinet includes disconnecting switch, arrester, modular high-voltage capacitor fling-cut switch, interconnection system bus, electric discharge
Coil, current transformer, controller, Microcomputer Protection unit, high voltage insulation protective sleeve, high-voltage isulation connecting line；The electric capacity electricity
Anti- cabinet includes high-voltage parallel capacitor, current-limiting reactor, high-voltage isulation connecting line, high voltage insulation protective sleeve；
Described device cabinet is connected by high voltage cable with the breaker in capacitor outgoing line cabinet；In high voltage cable and described device cabinet
Disconnecting switch connection, the disconnecting switch, the arrester be connected with the interconnection system bus, the interconnection system mother
Line links together multigroup modular high-voltage capacitor fling-cut switch, and modular high-voltage capacitor switching is opened described in every group
Current transformer described in one group of Guan Jun series connection, is connected, the high-voltage parallel capacitor is connected with described with the current-limiting reactor
Reactor is connected, and the discharge coil is parallel on the high-voltage parallel capacitor and the current-limiting reactor；
The controller is arranged on the inside of the door of described device cabinet, and the controller is thrown with multigroup modular high-voltage capacitor
Cut connection to connect, be connected with the on-load voltage regulating switch of main transformer, with main transformer high-pressure side or the current transformer of low-pressure side
And its outlet connection；
The Microcomputer Protection unit and multigroup modular high-voltage capacitor fling-cut switch, the current transformer, described put
Electric coil is all connected with；
The controller is analyzed and processed according to the high-pressure side of the main transformer of input or voltage, the current signal of low-pressure side,
Compensating control signal is exported to the modular high-voltage capacitor fling-cut switch, controls the automatic throwing of the high-voltage parallel capacitor
Cut, balance is idle；The on-load voltage regulating switch for exporting Regulation Control signal to main transformer carries out the adjustment of voltage.
2. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 1, its feature
It is, all electrical cables of each building block use the high-voltage isulation connecting line in device.
3. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 1, its feature
It is, except the disconnecting switch, in device at the electrical connection of all building blocks and exposed live part is using described
High voltage insulation protective sleeve sealing.
4. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 1, its feature
It is, the Modular capacitor fling-cut switch is attached by the interconnection system bus, and the interconnection system bus is a kind of
Solid insulated busbar, its insulation is to carry out insulation sealing by the high voltage insulation protective sleeve.
5. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 1, its feature
It is, cascade protection mode is taken in the protection of device, altogether level Four protection；Including the high-voltage parallel capacitor Internal fuse in device
First class of protection, the second class protection of three-phase capacitor Voltage unbalance in the high-voltage parallel capacitor, high pressure described in every group is simultaneously
Join the three-level protective of capacitor over-current, the breaker excessively stream of the capacitor outgoing line cabinet or the level Four of fast tripping protection outside device
Protection.
6. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 5, its feature
It is, the high-voltage parallel capacitor is formed by multiple small capacitor connection in series-parallel, in the string section of each small capacitor
An Internal fuse is all connected with, when small capacitor damage, connected Internal fuse fuse protection group high-voltage parallel
The normal operation of capacitor.
7. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 5, its feature
It is, the damage of small capacitor described in the high-voltage parallel capacitor, the connected Internal fuse fusing, the string section capacity
Reduce voltage rise, when multiple small capacitors damage the phase condenser capacity is reduced, voltage rise；The discharge coil has
One secondary winding, its secondary winding connection mode use open delta form, the three phase capacitance in the high-voltage parallel capacitor
When Voltage unbalance occurs in device, the discharge coil secondary winding opening voltage is started from scratch rise；The discharge coil is opened
Microcomputer Protection unit described in control source at mouthful, the Microcomputer Protection element analysis processing, if voltage is increased to the electricity of setting
When pressing protection value, send the modular high-voltage capacitor switching corresponding to control signal to the high-voltage parallel capacitor and open
Close, disconnect the group high-voltage parallel capacitor.
8. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 5, its feature
It is, the current signal for detecting the connected high-voltage parallel capacitor is inputted the microcomputer by the current transformer
Protection location, the Microcomputer Protection element analysis processing, if current signal is abnormal, control signal is sent to high-voltage parallel electricity
The modular high-voltage capacitor fling-cut switch corresponding to container, cuts off the group high-voltage parallel capacitor.
9. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 5, its feature
It is, the current transformer in the capacitor outgoing line cabinet will detect that electricity is streamed to device outer controller, if current anomaly,
Controller is analyzed and processed, send control signal in limited time or fast shut-off described in breaker.
10. the more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of a kind of compact according to claim 1, its feature
It is, the controller set control of pressure regulation and reactive-load compensation, the controller is according to the main transformer high pressure detected
The voltage of side or low-pressure side, current signal are analyzed and processed, if voltage is high, idle insufficient, the controller first sends tune
Pressing control signal to carry out voltage adjustment reduces voltage, then sends compensating control signal to the modular high-voltage capacitor switching and open
Put the input of the row high-voltage parallel capacitor into, balance is idle；If voltage is low, idle insufficient, the controller is first sent
Compensating control signal carries out the input of the high-voltage parallel capacitor to the modular high-voltage capacitor fling-cut switch, balances nothing
Work(, booster tension, voltage is still low after putting into the high-voltage parallel capacitor, and the controller sends Regulation Control signal and entered again
Row voltage adjustment rise voltage.
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| CN201710944887.3A CN107465201A (en) | 2017-10-12 | 2017-10-12 | A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710944887.3A CN107465201A (en) | 2017-10-12 | 2017-10-12 | A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212549A (en) * | 2019-05-24 | 2019-09-06 | 宁波市电力设计院有限公司 | Multifunctional unit power distribution equipment |
| CN110829213A (en) * | 2019-12-03 | 2020-02-21 | 国网江苏省电力有限公司常州供电分公司 | Multistage voltage regulation compensation arrangement of transformer substation |
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