CN205724925U - Three-phase load unbalance is automatically adjusted and reactive power compensator - Google Patents
Three-phase load unbalance is automatically adjusted and reactive power compensator Download PDFInfo
- Publication number
- CN205724925U CN205724925U CN201620415927.6U CN201620415927U CN205724925U CN 205724925 U CN205724925 U CN 205724925U CN 201620415927 U CN201620415927 U CN 201620415927U CN 205724925 U CN205724925 U CN 205724925U
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- capacitor
- fling
- altogether
- coupling device
- capacitive coupling
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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
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
A kind of three-phase load unbalance is automatically adjusted and reactive power compensator, transformer secondary outfan is connected with load, transformer secondary outfan is connected with main lead-in circuit breaker, intelligent integrated alternate compensation Capacitor banks includes three capacitive coupling device branch roads in corner connection, each capacitive coupling device branch road includes alternate fling-cut switch and the capacitor of series connection, and each capacitive coupling device branch road lays respectively at two-by-two between phase line；Intelligent integrated divides mends three points of benefit capacitor branches that Capacitor banks includes connecing in star, mends capacitor branches for each point and includes that dividing of series connection mends fling-cut switch and capacitor, and each capacitive coupling device branch road is connected with a phase line respectively, and the star midpoint that star connects is connected with zero line；Intelligent integrated is mended Capacitor banks altogether and is included that three in corner connection are mended capacitor altogether, and three outfans of corner connection are connected with a respective phase line by benefit fling-cut switch altogether respectively.It is preferable that this utility model balances three-phase load, reactive-load compensation effect effectively.
Description
Technical field
This utility model belongs to low pressure equipment for power transmission and distribution, relates to a kind of three-phase load unbalance and is automatically adjusted and reactive-load compensation
Device.
Background technology
In China's low-voltage network, the main distribution system using three-phase four-wire system, distribution transformer is Y/YN0 wiring side
Formula.Owing to there is substantial amounts of single-phase load at user side, and the randomness that load accesses and electricity consumption do not have synchronism, necessarily make
Supply terminals distribution transformer is in asymmetric operation state.Can be analyzed to positive-sequence component for asymmetrical three-phase electric current, negative phase-sequence is divided
Amount and zero-sequence component.And the asymmetric operation of distribution transformer can produce substantial amounts of zero-sequence current and negative-sequence current, zero-sequence current
Flow through center line and form current in middle wire, and the increase of current in middle wire, iron loss and the copper loss of transformator can be increased, be that neutral point voltage is inclined
Move, reduce exerting oneself of transformator, center line time serious, can be blown, threaten the safe operation of transformator；Additionally negative-sequence current increases change
The copper loss of depressor, makes electric energy metrical precise decreasing, the motor running that simultaneously can be docked on supply terminals have adverse effect on,
Reducing electrical appliance to exert oneself and service life, cause the user is lost.
At present, load or burden without work is compensated by the reactive power compensator that application point is mended and mended altogether, also can only be by system
Reactive current components is mended, and solves the compensation problem of power factor, and helpless, no for uneven watt current part
Can effectively balance three-phase load, the degree of unbalancedness sometimes compensating after current is bigger, and therefore power department can only be determined
Phase carries out load adjustment by the mode manually relocated.
Summary of the invention
In order to overcome existing low pressure equipment for power transmission and distribution cannot effectively to balance three-phase load, reactive-load compensation effect poor
Deficiency, this utility model provides one and effectively balances three-phase load, the preferable three-phase load unbalance of reactive-load compensation effect
It is automatically adjusted and reactive power compensator.
This utility model solves its technical problem and be the technical scheme is that
A kind of three-phase load unbalance is automatically adjusted and reactive power compensator, and transformer secondary outfan is connected with load,
Described device includes that main lead-in circuit breaker, intelligent integrated alternate compensation Capacitor banks, intelligent integrated divide benefit Capacitor banks and intelligence
Integrated Capacitor banks of mending altogether, described transformer secondary outfan is connected with described main lead-in circuit breaker, and described intelligent integrated is alternate
Compensating Capacitor banks and include three capacitive coupling device branch roads in corner connection, each capacitive coupling device branch road includes the alternate throwing of series connection
Cutting and close and capacitor, each capacitive coupling device branch road lays respectively at two-by-two between phase line；
Described intelligent integrated divides mends three points of benefit capacitor branches that Capacitor banks includes connecing, each point of benefit capacitor in star
Branch road includes point benefit fling-cut switch and the capacitor of series connection, and each capacitive coupling device branch road is connected with a phase line respectively, and star connects
Star midpoint be connected with zero line；
Described intelligent integrated is mended Capacitor banks altogether and is included that three in corner connection are mended capacitor altogether, and three outfans of corner connection divide
Tong Guo not mend fling-cut switch altogether to be connected with a respective phase line.
Further, described device also includes microcomputerized controller, described microcomputerized controller by RS-485 bus respectively with institute
State alternate fling-cut switch, point benefit fling-cut switch and mend the control end connection of fling-cut switch altogether.
Technology of the present utility model is contemplated that: according to the principle of stacking of linear system, before learning compensation each the most meritorious with
In the case of reactive power, founding mathematical models, utilize this model, solve this pass of algorithm eliminating negative phase-sequence and zero-sequence current
Key technology, make use of that the perception in load loop is idle is equivalent to reactor, goes out special microcomputer controller with microcomputer development,
By calculating and the control of microcomputer controller, by intelligent integrated alternate compensation capacitor, in three-phase and four-line low-voltage distribution system
Each innovative approach between phase and phase and accessing some Monophase electric power capacitors between each phase and zero line rightly in system, it is achieved
Three-phase load asymmetric automatic tune is mended and reactive-load compensation, solves and automatically adjusts the unbalanced difficulty of distribution transformer watt current
Topic, not only increases power factor by reactive-load compensation simultaneously, reduces again line loss simultaneously.
The beneficial effects of the utility model are mainly manifested in: effectively balance three-phase load, and reactive-load compensation effect is preferable, carries
High power factor, reduces line loss.
Accompanying drawing explanation
Fig. 1 is that three-phase load unbalance is automatically adjusted and the schematic diagram of reactive power compensator.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
With reference to Fig. 1, a kind of three-phase load unbalance is automatically adjusted and reactive power compensator, and transformer secondary outfan is with negative
Lotus connects, and described device includes main lead-in circuit breaker, intelligent integrated alternate compensation Capacitor banks, intelligent integrated point benefit Capacitor banks
Mend Capacitor banks altogether with intelligent integrated, described transformer secondary outfan is connected with described main lead-in circuit breaker, described intelligence collection
Becoming alternate compensation Capacitor banks to include three capacitive coupling device branch roads in corner connection, each capacitive coupling device branch road includes series connection
Alternate fling-cut switch and capacitor, each capacitive coupling device branch road lays respectively at two-by-two between phase line；
Described intelligent integrated divides mends three points of benefit capacitor branches that Capacitor banks includes connecing, each point of benefit capacitor in star
Branch road includes point benefit fling-cut switch and the capacitor of series connection, and each capacitive coupling device branch road is connected with a phase line respectively, and star connects
Star midpoint be connected with zero line；
Described intelligent integrated is mended Capacitor banks altogether and is included that three in corner connection are mended capacitor altogether, and three outfans of corner connection divide
Tong Guo not mend fling-cut switch altogether to be connected with a respective phase line.
Further, described device also includes microcomputerized controller, described microcomputerized controller by RS-485 bus respectively with institute
State alternate fling-cut switch, point benefit fling-cut switch and mend the control end connection of fling-cut switch altogether.
The three-phase load unbalance of the present embodiment is automatically adjusted and reactive power compensator is by main lead-in circuit breaker, YD-9CK-
The integrated alternate compensation Capacitor banks of 200 microcomputerized controllers, YDK-SPC Series Intelligent, YD Series Intelligent collection composition benefit Capacitor banks,
Intelligent integrated is mended Capacitor banks, casing etc. altogether and is constituted.According to the difference of capacity, device connects built with some different capabilities and difference
The intelligent integrated alternate compensation power capacitor of line mode, intelligent integrated divides benefit Capacitor banks, and intelligent integrated mends Capacitor banks altogether,
Every capacitor, i.e. can be connected between phase line and phase line at microcomputerized controller under the control of RS-485 bus, with zero it
Between, it is achieved the tune of device is connected to the function of merit and reactive-load compensation.
Claims (2)
1. three-phase load unbalance is automatically adjusted and a reactive power compensator, and transformer secondary outfan is connected with load, its
It is characterised by: described device includes main lead-in circuit breaker, intelligent integrated alternate compensation Capacitor banks, intelligent integrated point benefit capacitor
Group and intelligent integrated mend Capacitor banks altogether, and described transformer secondary outfan is connected with described main lead-in circuit breaker, described intelligence
Integrated alternate compensation Capacitor banks includes three capacitive coupling device branch roads in corner connection, and each capacitive coupling device branch road includes series connection
Alternate fling-cut switch and capacitor, each capacitive coupling device branch road lays respectively at two-by-two between phase line；
Described intelligent integrated divides mends three points of benefit capacitor branches that Capacitor banks includes connecing in star, mends capacitor branches for each point
Including point benefit fling-cut switch and the capacitor of series connection, each capacitive coupling device branch road is connected with a phase line respectively, the star that star connects
Midpoint is connected with zero line；
Described intelligent integrated is mended Capacitor banks altogether and is included that three in corner connection are mended capacitor altogether, and three outfans of corner connection lead to respectively
Cross benefit fling-cut switch altogether to be connected with a respective phase line.
2. three-phase load unbalance as claimed in claim 1 is automatically adjusted and reactive power compensator, it is characterised in that: described dress
Putting and also include microcomputerized controller, described microcomputerized controller is thrown with described alternate fling-cut switch, a point benefit respectively by RS-485 bus
Cut the control end connection closing and mending altogether fling-cut switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620415927.6U CN205724925U (en) | 2016-05-09 | 2016-05-09 | Three-phase load unbalance is automatically adjusted and reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620415927.6U CN205724925U (en) | 2016-05-09 | 2016-05-09 | Three-phase load unbalance is automatically adjusted and reactive power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205724925U true CN205724925U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620415927.6U Expired - Fee Related CN205724925U (en) | 2016-05-09 | 2016-05-09 | Three-phase load unbalance is automatically adjusted and reactive power compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205724925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769230A (en) * | 2017-11-20 | 2018-03-06 | 广东正诚电气科技有限公司 | A kind of active and passive combination power load three-phase imbalance adjusting means |
-
2016
- 2016-05-09 CN CN201620415927.6U patent/CN205724925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769230A (en) * | 2017-11-20 | 2018-03-06 | 广东正诚电气科技有限公司 | A kind of active and passive combination power load three-phase imbalance adjusting means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20200509 |