CN107154623A - A kind of intelligent harbour bank electricity power quality controlling device - Google Patents
A kind of intelligent harbour bank electricity power quality controlling device Download PDFInfo
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- CN107154623A CN107154623A CN201610125622.6A CN201610125622A CN107154623A CN 107154623 A CN107154623 A CN 107154623A CN 201610125622 A CN201610125622 A CN 201610125622A CN 107154623 A CN107154623 A CN 107154623A
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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
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of intelligent harbour bank electricity power quality controlling device, including：Switch module, charging assembly, unit block and control assembly；Switch module includes the first breaker, and charging assembly includes reactor, and unit block includes multiple chain links, and multiple segment distributions are in every phase line, and joins end to end；One end of first breaker is connected with grid side, and the other end is connected by reactor with the output end of unit block；Control assembly is used for the voltage and current signal for gathering grid side, and determines chain link control signal according to voltage and current signal, controls each chain link to work by fibre circuit, and indicating member component produces corresponding reactive-load compensation electric current with the change of reactive load electric current.The device, using multiple link sets into chain inverter, so as to quick response and produces reactive-load compensation electric current, volume is smaller, and faster, compensation ability is stronger for response speed；Harmonic wave is not produced not only simultaneously, moreover it is possible to dynamic compensation harmonic.
Description
Technical field
The present invention relates to electric and electronic technical field, in particular it relates to a kind of intelligent harbour bank electricity electric energy matter
Measure controlling device.
Background technology
With the fast development of China's maritime industry in recent years, the ship that reaches port increasingly increases, ship exhaust emission
It is on the rise, under the pressure of energy-conserving and environment-protective trend of the times, dock ship bank electricity goes on the arena of history.
National communication portion in April, 2011, Department of Transportation《Communications and transportation " 12 " development plan》Put into effect.
According to this planning, between 2011-2015, China will implement " green port boat construction project ", accelerate ship
The paces that oceangoing ship reaches port using bank electricity technology.It means that following ship shore electric technology is expected to " by point and face ",
From coastal area to inland terminal depot, the whole nation is gradually extended to；According to the requirement of Ministry of Communications, by the end of 2015
Year, the port berth for having 50% is furnished with ship shore-based power supply system by the whole nation, is brought to ship access bank electricity
Great convenience.Shipping shore power system is broadly divided into two kinds of high pressure and low pressure so far, and high voltage shore power is defeated
Go out electricity and be made as 6.6kV/60Hz, the conversion of frequency is mainly realized by power electronics conversion system.Ship by
Electric system requires higher to power index, and do not seek unity of standard still to follow at present, to ship shore electric system
The system quality of power supply is managed collectively.
So far, general purpose vessel bank electricity system is, by early stage calculation of capacity, fixation to be installed additional in itself
Specification capacity reactance, is filtered to system output electric energy, and takes into account marine electric equipment and system is caused in itself
Impact, due to ship electric load complexity variation, fixed capacity reactance can not reliably to electric energy progress
Administer and protect.
There is technical problem in the bank electricity application of current harbour：
1st, harmonic pollution.Due to ship electric loading, set containing various frequency conversion equipments and computer and communication
It is standby, therefore substantial amounts of harmonic pollution is produced, and also high-pressure frequency-conversion harbour bank electricity system contains powerful height
Converter plant is pressed, harmonic pollution can be also produced.
2nd, power factor is low.Because ship electricity consumption is based on inductive load, such as water pump, crane gear etc.,
And load variations are larger, therefore power factor is relatively low, typically below 0.7.
3rd, the power performances of bank side bulk power grid are that micro-capacitance sensor electric energy is special on frequency stabilization but voltage pulsation, ship
Property there is certain matching degree deviation for power performances between voltage stabilization but frequency fluctuation, therefore ship-to-shore,
The fluctuation of voltage influences the normal operation of ship electric loading to a certain extent.
Due to the variation that ship is loaded, load variations are larger, wherein the large scale equipment such as water pump, crane
Larger impact can be caused to shipping shore power system by starting the high current produced, so as to cause moment pressure drop.
The content of the invention
The present invention is in order to overcome the low defect of harbour bank electricity power factor in the prior art, according to this hair
Bright one side, proposes a kind of intelligent harbour bank electricity power quality controlling device.
A kind of intelligent harbour bank electricity power quality controlling device provided in an embodiment of the present invention, including：Switch
Component, charging assembly, unit block and control assembly；
Switch module includes the first breaker, and charging assembly includes reactor, and unit block includes multiple chains
Section, and multiple segment distributions are in every phase line, and join end to end；
One end of first breaker is connected with grid side, the output that the other end passes through reactor and unit block
End is connected；
Control assembly is used for the voltage and current signal for gathering grid side, and determines chain according to voltage and current signal
Control signal is saved, controls each chain link to work by fibre circuit, indicating member component is with reactive load electricity
The change of stream produces corresponding reactive-load compensation electric current.
In the above-mentioned technical solutions, charging assembly also includes the second breaker and charging resistor, the second open circuit
Device and charging resistor are in parallel；
The other end of first breaker passes sequentially through the output with unit block after the second breaker, reactor
End is connected.
In the above-mentioned technical solutions, the normally-closed contact of the second breaker is connected with charging resistor.
In the above-mentioned technical solutions, chain link includes：First IGBT, the 2nd IGBT, the 3rd IGBT,
Four IGBT, charging capacitor；
First IGBT colelctor electrode is connected with the 2nd IGBT colelctor electrode, while one end with charging capacitor
It is connected；3rd IGBT emitter stage and the 4th IGBT emitter stage are connected, while another with charging capacitor
One end is connected；
First IGBT emitter stage is connected with the 3rd IGBT colelctor electrode, and connecting node is the defeated of link
Enter end；2nd IGBT emitter stage is connected with the 4th IGBT colelctor electrode, and connecting node is link
Output end；
Each chain link is connected by input and/or output end with other adjacent chain links.
In the above-mentioned technical solutions, the first IGBT gate pole, the 2nd IGBT gate pole, the 3rd IGBT
Gate pole, the 4th IGBT gate pole be connected by optical fiber with control assembly, receive control assembly send
Chain link control signal.
In the above-mentioned technical solutions, the first IGBT gate pole and the 3rd IGBT gate pole are connected；Second
IGBT gate pole and the 4th IGBT gate pole are connected.
In the above-mentioned technical solutions, switch module also includes：Fuse；
First breaker is connected by fuse with grid side.
In the above-mentioned technical solutions, in addition to：Current transformer and voltage transformer；
Current transformer is used to gather three-phase current signal, and three-phase current signal is sent to control assembly；
Voltage transformer is used to gather three-phase voltage signal, and three-phase voltage signal is sent to control assembly.
A kind of intelligent harbour bank electricity power quality controlling device provided in an embodiment of the present invention, using multiple chains
Section composition chain inverter, so as to quick response and produces reactive-load compensation electric current.Based on IGBT device
Chain inverter no longer use Large Copacity capacitor, reactor, pass through device for high-power power electronic
HF switch realize the conversion of quadergy；Volume is smaller, and faster, compensation ability is stronger for response speed；
Harmonic wave is not produced not only simultaneously, moreover it is possible to dynamic compensation harmonic.
Other features and advantages of the present invention will be illustrated in the following description, also, partly from froming the perspective of
Become apparent, or understood by implementing the present invention in bright book.The purpose of the present invention is excellent with other
Point can be by specifically noted structure in the specification, claims and accompanying drawing write come real
Now and obtain.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with
Embodiments of the invention are used to explain the present invention together, are not construed as limiting the invention.In accompanying drawing
In：
Fig. 1 is the structure chart of intelligent harbour bank electricity power quality controlling device in the embodiment of the present invention；
Fig. 2 is the segment distribution schematic diagram in unit block of the embodiment of the present invention；
Fig. 3 is the circuit structure diagram of chain link in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by embodiment.
There is provided a kind of intelligent harbour bank electricity power quality controlling device, Fig. 1 according to embodiments of the present invention
For the structure chart of the device, specifically include：Switch module 10, charging assembly 20, the and of unit block 30
Control assembly 40.
Wherein, switch module 10 includes the first breaker KM1, and charging assembly 20 includes reactor L.
It is preferred that, shown in Figure 1, charging assembly 20 also includes pre-charge circuit, and pre-charge circuit is specifically wrapped
Include the second breaker KM2 and charging resistor R, the second breaker KM2 and charging resistor R are in parallel.
Shown in Figure 2, unit block 30 includes multiple chain links, and multiple segment distributions are in every phase line
In, and join end to end.In the embodiment of the present invention, by multiple link sets into chain inverter, equivalent to
One variable reactive current source, its reactive current can rapidly follow the change of reactive load electric current and
Change, reactive power needed for self compensating system.Specifically, as shown in Fig. 2 unit block 30 is included
Multigroup chain link, each group of chain link includes three chain links, three chain links be respectively arranged at three-phase line A, B,
In C.Fig. 2 using comprising 12 groups of chain links to exemplify.
First breaker KM1 one end is connected with grid side, and the first breaker KM1 other end is successively
By being connected after the second breaker KM2, reactor L with the output end of unit block 30.
Control assembly 40 is used for the voltage and current signal for gathering grid side, and is determined according to voltage and current signal
Chain link control signal, controls each chain link to work by fibre circuit, indicating member component 30 with load without
The change of work(electric current produces corresponding reactive-load compensation electric current.
Control assembly is the control centre of whole power quality controlling device.It uses independent ups power
Power supply.UPS has two-way power input (primary, spare power supply), and when primary power cource is invalid, system is automatic
It is switched to stand-by power supply.When UPS damage but standby usage power supply it is effective all the way when, control assembly is by leading
Stand-by power supply is powered.When UPS or when being arbitrarily out of order all the way of standby usage power supply, system can be alerted.
So ensure that system can be used for severe power environment.The input signal of control assembly has：Charging cabinet
Contactor (or disconnecting link) status signal, input and output voltage, current detection signal, each device chain link
Feedback signal and user's operation for passing through man-machine interface etc..The output signal of control assembly has：Dress
Put the control signal (optical fiber) of chain link, the control signal of fan, the contactor control signal of charging cabinet.Production
Product nameplate, touch-screen, indicator lamp (including ready, operation, failure), emergency stop button, it is long-range just
Ground toggle switch, open programmable terminal used to user etc. are all arranged on switch board.Control assembly is used
In realizing expected control targe, supervisory control system running state, being communicated etc. with host computer, its stabilization can
The safe and reliable operation of whole system by the guarantee of work
Wherein, the voltage and current signal specifically includes three-phase current signal and three-phase voltage signal.The intelligence
Harbour bank electricity power quality controlling device also includes Current Transmit and voltage transformer pt.Electric current is mutual
Sensor CT is used to gather three-phase current signal, and three-phase current signal is sent to control assembly 40；Electricity
Pressure transformer PT is used to gather three-phase voltage signal, and three-phase voltage signal is sent to control assembly 40.
The course of work of intelligent harbour bank electricity power quality controlling device provided in an embodiment of the present invention is specific such as
Under：
Close the first breaker KM1 first when needing reactive-load compensation, now grid side passes through charging resistor
R and reactor L is the chain link charging in unit block.After chain link charging reaches normal voltage, closure
Second breaker KM2, so that short-circuit charging resistor R, the device enters ready state.Charging resistor R
Pre-charge circuit is constituted with the second breaker KM2, in unit block when closing KM1 for mode
Chain link causes moment impact.Reactor L is used to buffer line voltage and inverter (i.e. unit block 30)
Difference between output voltage, and by reactor L to power network injecting reactive current, while reducing control
Switching harmonics in the output current of component 40, reduce common mode disturbances.
Control assembly gathers current harmonics by the CT (current transformer) of net side, is quickly counted through high-speed dsp
Calculate, FFT fast Fourier transforms and SFR synchronous rotating angle methods are carried out to side harmonics, it is determined that
Harmonic wave (such as less than 65 times harmonic waves) component and reactive component situation, in preset time (such as 50 μ s)
Action sends current order, and is produced and harmonic source harmonic current width in opposite direction by power actuators part
Value equal compensation harmonic electric current and reactive-load compensation electric current, and grid side is injected, reach that counteracting is non-linear negative
The effect and reactive-load compensation of harmonic current produced by lotus, realize the function of filtering out harmonic wave and reactive-load compensation.
It should be noted that in the embodiment of the present invention, the first breaker and the second breaker are only defined to one
Switch is planted, breaker is not only defined to, corresponding function such as can also be realized using contactor, for example
Second breaker KM2 can use contactor.
It is preferred that, the second breaker KM2 normally-closed contact is connected with charging resistor R.Break in closure second
While the device KM2 of road, the normally-closed contact can be disconnected, so as to disconnect between charging resistor R and grid side
Connection.
It is preferred that, chain link in the embodiment of the present invention uses H formula topological structures, greatly improve reliability,
Flexibility and maintainability.Shown in Figure 3, chain link provided in an embodiment of the present invention is specifically included：The
One IGBT D1, the 2nd IGBT D2, the 3rd IGBT D3, the 4th IGBT D4, charging capacitor C.
Wherein, the first IGBT D1 colelctor electrode is connected with the 2nd IGBT D2 colelctor electrode, while with filling
Electric capacity C one end is connected；3rd IGBT D3 emitter stage and the 4th IGBT D4 emitter stage are connected,
It is connected simultaneously with the charging capacitor C other end.First IGBT D1 emitter stage and the 3rd IGBT D3's
Colelctor electrode is connected, and connecting node is the input ACI of link；2nd IGBT D2 emitter stage and
Four IGBT D4 colelctor electrode is connected, and connecting node is the output terminals A CO of link.Each chain link passes through
Input and/or output end are connected with other adjacent chain links.
The major function of the chain link includes compensation system reactive power, improves power factor；Reduce line loss,
Improve multi-line power transmission ability；Harmonic wave is dynamically compensated, and improves the quality of power supply；Suppress voltage fluctuation and flicker；
Maintain by electric section voltage, strengthening system voltage stability；Suppress power network three-phase imbalance.
Charging capacitor C is DC capacitor, and the DC capacitor is as energy-storage travelling wave tube, to be inverse by IGBT
Become device and internal reactor outwards exports compensation electric current and provides energy.Meanwhile, DC capacitor passes through power supply PCB
Control PCB and electronic circuit internally provides working power.
Specifically, the first IGBT D1 gate pole, the 2nd IGBT D2 gate pole, the 3rd IGBT D3
Gate pole, the 4th IGBT D4 gate pole be connected by optical fiber with control assembly 40, receive control assembly
The 40 chain link control signals sent, opening and turning off by decoding generation trigger pulse control IGBT.
In work, by adjusting the switch of IGBT device in inverter bridge, DC inversion can be controlled to the electricity of exchange
The amplitude and phase of pressure, therefore, equivalent to one phase modulation power supply of engagement positions.By needed for detecting system
It is idle, can quickly send equal in magnitude, opposite in phase idle, realize idle in-situ balancing,
The real-time High Power Factor operation of holding system.
It is preferred that, the first IGBT D1 gate pole and the 3rd IGBT D3 gate pole are connected；2nd IGBT D2
Gate pole and the 4th IGBT D4 gate pole be connected.Due to using IGBT (Insulated in the embodiment of the present invention
Gate Bipolar Transistor, insulated gate bipolar transistor) device, so as to pass through two-way optical fiber
To control four IGBT break-make, so as to save fibre circuit, trouble point is few, it is easy to safeguard (original control
Circuit needs four road optical fiber).
In the embodiment of the present invention, unit block uses chain topology, passes through linked reactor or transformation
Device is parallel on power network, it is not necessary to change the original wiring of system, need to be only incorporated to reactive-load compensation generator
Power network.
It is every to be composed in series by 12 device chain links by taking Fig. 2 as an example, each device chain link and control assembly
Using optical-fibre communications, control assembly is acquired processing to device side and grid side voltage and electric current respectively,
It is grid-connected by KM2 and KM1 control devices.UDP/IP agreements and man-machine interface can be passed through simultaneously
Touch-screen is communicated, and control assembly provides multichannel input and output terminal etc..
It is preferred that, shown in Figure 2, switch module 10 also includes：Fuse QF.First breaker
KM1 is connected by fuse QF with grid side.
A kind of intelligent harbour bank electricity power quality controlling device provided in an embodiment of the present invention, using multiple chains
Section composition chain inverter, so as to quick response and produces reactive-load compensation electric current.Based on IGBT device
Chain inverter no longer use Large Copacity capacitor, reactor, pass through device for high-power power electronic
HF switch realize the conversion of quadergy；Volume is smaller, and faster, compensation ability is stronger for response speed；
Harmonic wave is not produced not only simultaneously, moreover it is possible to dynamic compensation harmonic.
IGBT wholly-controled devices, device opens the μ s of turn-off time 2, is entirely filled using PWM control algolithms
The response time put is within 5ms.The device dynamic quickly continuously adjusts idle output, to greatest extent
Power factor compensation requirement is met, on the premise of compensation capacity is enough, the power of any time can be achieved
Factor is more than 0.98.It is defeated using advanced chain topology and Multilevel PWM come harmonic carcellation
Go out voltage, Current harmonic distortion rate and be respectively less than 3%, it is not necessary to which harmonic filter branch road is installed；Do not increasing
Harmonic function can be achieved in the case of hardware cost, be particularly suitable for coal, metallurgy, railway etc. humorous
Involve impact load.
Meanwhile, the device is the characteristic of current source, and output current can not be influenceed by busbar voltage.This is excellent
Point makes the device be used for possessing very big advantage when voltage is controlled, and system voltage is lower, more needs dynamic nothing
Work(supports voltage, and device output reactive current is not related with system voltage, and can be regarded as one can
Control constant-current source；And the device is impedance type characteristic, output current is with busbar voltage linear reduction.
The present invention can have a variety of various forms of embodiments, be combined above by taking Fig. 1-Fig. 3 as an example attached
Figure is to technical scheme explanation for example, and this is not meant to the instantiation that the present invention is applied
Can only be confined in specific flow or example structure, one of ordinary skill in the art it is to be appreciated that
Specific embodiment presented above is some examples in a variety of its preferred usages, any this hair of embodiment
The embodiment of bright claim all should be within the scope of technical solution of the present invention be claimed.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, limit is not used to
The system present invention, although the present invention is described in detail with reference to the foregoing embodiments, for this area
For technical staff, it can still modify to the technical scheme described in foregoing embodiments,
Or equivalent substitution is carried out to which part technical characteristic.Within the spirit and principles of the invention,
Any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (8)
1. a kind of intelligent harbour bank electricity power quality controlling device, it is characterised in that including：Switch module,
Charging assembly, unit block and control assembly；
The switch module includes the first breaker, and the charging assembly includes reactor, the unit group
Part includes multiple chain links, and multiple segment distributions are in every phase line, and joins end to end；
One end of first breaker is connected with grid side, and the other end passes through the reactor and the list
The output end of first component is connected；
The control assembly is used for the voltage and current signal for gathering grid side, and is believed according to the voltage x current
Number chain link control signal is determined, control each chain link to work by fibre circuit, indicate the unit block
Corresponding reactive-load compensation electric current is produced with the change of reactive load electric current.
2. device according to claim 1, it is characterised in that the charging assembly also includes second
Breaker and charging resistor, second breaker and the charging resistor are in parallel；
The other end of first breaker pass sequentially through after second breaker, the reactor with institute
The output end for stating unit block is connected.
3. device according to claim 2, it is characterised in that the normally closed of second breaker is touched
Point is connected with the charging resistor.
4. device according to claim 1, it is characterised in that the chain link includes：First IGBT,
2nd IGBT, the 3rd IGBT, the 4th IGBT, charging capacitor；
The colelctor electrode of first IGBT is connected with the colelctor electrode of the 2nd IGBT, while being filled with described
One end of electric capacity is connected；The emitter stage of 3rd IGBT is connected with the emitter stage of the 4th IGBT,
It is connected simultaneously with the other end of the charging capacitor；
The emitter stage of first IGBT is connected with the colelctor electrode of the 3rd IGBT, and connecting node is
The input of the link；The emitter stage of 2nd IGBT is connected with the colelctor electrode of the 4th IGBT,
And connecting node is the output end of the link；
Each chain link is connected by input and/or output end with other adjacent chain links.
5. device according to claim 4, it is characterised in that the gate pole of the first IGBT,
2nd IGBT gate pole, the 3rd IGBT gate pole, the 4th IGBT gate pole by optical fiber with it is described
Control assembly is connected, and receives the chain link control signal that the control assembly is sent.
6. device according to claim 5, it is characterised in that the gate pole of the first IGBT and
The gate pole of 3rd IGBT is connected；The gate pole of 2nd IGBT and the gate pole of the 4th IGBT
It is connected.
7. the device according to claim 1-6, it is characterised in that the switch module also includes：
Fuse；
First breaker is connected by the fuse with grid side.
8. the device according to claim 1-6, it is characterised in that also include：Current transformer and
Voltage transformer；
The current transformer is used to gather three-phase current signal, and by the three-phase current signal send to
The control assembly；
The voltage transformer is used to gather three-phase voltage signal, and by the three-phase voltage signal send to
The control assembly.
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| CN201610125622.6A CN107154623A (en) | 2016-03-04 | 2016-03-04 | A kind of intelligent harbour bank electricity power quality controlling device |
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| CN201610125622.6A CN107154623A (en) | 2016-03-04 | 2016-03-04 | A kind of intelligent harbour bank electricity power quality controlling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287491A (en) * | 2018-03-09 | 2018-07-17 | 广船国际有限公司 | A kind of device of bank electricity interlocking |
| WO2020131973A1 (en) * | 2018-12-17 | 2020-06-25 | Xslent Energy Technologies, Llc | Sensor-based energy management enclosure and distributed energy resource management based on sensor data |
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| CN102723724A (en) * | 2012-07-04 | 2012-10-10 | 辽宁立德电力电子有限公司 | Novel static dynamic reactive generator device and control method thereof |
| CN102832630A (en) * | 2012-09-07 | 2012-12-19 | 南车株洲电力机车研究所有限公司 | Integrated governance device for electric energy quality |
| CN105305449A (en) * | 2015-11-26 | 2016-02-03 | 上海华艾软件股份有限公司 | Ship shore power system |
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| CN108287491A (en) * | 2018-03-09 | 2018-07-17 | 广船国际有限公司 | A kind of device of bank electricity interlocking |
| CN108287491B (en) * | 2018-03-09 | 2023-09-26 | 广船国际有限公司 | Shore power interlocking device |
| WO2020131973A1 (en) * | 2018-12-17 | 2020-06-25 | Xslent Energy Technologies, Llc | Sensor-based energy management enclosure and distributed energy resource management based on sensor data |
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Application publication date: 20170912 |