CN203261040U - Low-voltage dynamic reactive power compensation device - Google Patents
Low-voltage dynamic reactive power compensation device Download PDFInfo
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- CN203261040U CN203261040U CN 201320282335 CN201320282335U CN203261040U CN 203261040 U CN203261040 U CN 203261040U CN 201320282335 CN201320282335 CN 201320282335 CN 201320282335 U CN201320282335 U CN 201320282335U CN 203261040 U CN203261040 U CN 203261040U
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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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Abstract
The utility model relates to a low-voltage dynamic reactive power compensation device. The device comprises a power supply circuit breaker (1), several groups of low-voltage three-phase capacitors (2), a current transformer (3), a dynamic compensation controller (4), several three-phase intelligent non-contact switches (5) and several branch circuit breakers (6). A working power supply input terminal of each three-phase intelligent non-contact switch (5) is connected with a working power supply output terminal of the dynamic compensation controller (4) respectively. A control signal input terminal is connected with each control signal output terminal of the dynamic compensation controller (4) respectively. The device possesses advantages that a reaction speed is fast; intelligent reactive compensation can be rapidly performed along with changes of a power grid; during capacitor switching, voltage zero passage switching can be realized; overvoltage is not easy to be generated; a noise is small during the switching; a service life is long. According to the changes of a network load, the capacitor with an appropriate capacity can be selectively switched so that multiple performance indexes of the power grid always maintain a best level. A compensation effect can be always in an optimum state and a usage effect is good.
Description
Technical field
The utility model relates to power equipment, is specifically related to a kind of high-pressure reactive compensation device.
Background technology
The use of low-voltage reactive power automatic compensation device can reduce the power supplying and distributing equipment electric energy loss, improve the power supplying and distributing equipment utilance, and improve to a certain extent quality of voltage for power-distribution electric energy, therefore always be subject to power supply enterprise and electricity consumption client's great attention, be subject to using very widely.Low-voltage reactive power automatic compensation device has the history of many decades, because the development of electric power, electrical equipment and electronic technology, device performance improves constantly, particularly modern power electronic and the microelectric technique application on low-voltage reactive power automatic compensation device, the switch performance of switching low-voltage electric power capacitor is greatly improved, and can realize measuring, the greater functionality of the aspect such as statistics.
But present society is to come switching low-voltage electric power capacitor group by A.C. contactor with the structure of low-voltage reactive power automatic compensation device generally, has following deficiency: the one, and response speed is slow, can not follow the electrical network variation and carry out fast intelligent powerless compensation; The 2nd, the capacitor switching time can not be realized the voltage zero-cross switching, easily produces overvoltage, thereby causes the earlier period damage of equipment; The 3rd, noise is large during switching, and useful life is short.
Summary of the invention
The utility model is for the defects of existing low-voltage reactive power automatic compensation device, provide a kind of response speed fast, can follow electrical network change can realize the voltage zero-cross switching when carrying out intelligent powerless compensation, capacitor switching fast, the low-voltage dynamic reactive power compensation arrangement of little, the long service life of noise when being difficult for producing overvoltage, switching.
Technical solution of the present utility model is: it comprises power circuit breaker, some groups of low voltage three-phase capacitor summation current transformers, it also comprises dynamic compensation controller, several three-phase intelligent noncontacting switches identical with low voltage three-phase capacitor group number and several branch circuit breakers, the current transformer primary side is installed on phase line of low-voltage bus bar, the two ends of Current Transformer Secondary side link to each other with two current signal inputs of dynamic compensation controller respectively, two phase voltage signal inputs of dynamic compensation controller are installed current transformer in addition two phase lines in addition with low-voltage bus bar respectively and are linked to each other, the power end of power circuit breaker links to each other with each phase line of low-voltage bus bar respectively, load side links to each other respectively with the power end of each branch circuit breaker and the three-phase power input end of dynamic compensation controller, the power supply input zero line side of dynamic compensation controller links to each other with the low-voltage bus bar zero line, the load side of each branch circuit breaker links to each other with the power end of on the same group three-phase intelligent noncontacting switch respectively, the load side of each three-phase intelligent noncontacting switch links to each other with on the same group low voltage three-phase capacitor respectively, and the working power input of each three-phase intelligent noncontacting switch links to each other with the working power output of dynamic compensation controller respectively, the control signal input links to each other with each control letter output of dynamic compensation controller respectively.
Technique effect of the present utility model is: it have reaction speed fast, can follow electrical network change can realize the voltage zero-cross switching when carrying out intelligent powerless compensation, capacitor switching fast, the advantage of little, the long service life of noise when being difficult for producing overvoltage, switching.It can make the multinomial performance index of electrical network remain a best level according to the variation of the network load capacitor of switching suitable capacity optionally, and compensation effect can be in optimum state all the time, and result of use is better.
It is applicable in order to improve power factor, improve power supply quality in the following power frequency electric power system of power frequency 1000V, reduces line loss.The variation of its autotracking network power factor is carried out the voltage zero-cross automatic switching to every grade of capacitor, thereby realizes carrying out in real time the idle dynamic auto-compensation for the network load situation of change.
This device can be directly in parallel with the inductive load such as motor, installs and uses on the spot, and outdoor installation is specially adapted to oil field system, can effectively improve power factor, reduces line loss, improves the fan-out capability of transformer.Reactive power or reactive current change and carry out capacitor grouping zero passage automatic switching in this compensation arrangement capable of dynamic tracking network; and have switching response rapidly, no-flashy-flow, without characteristics such as overvoltage and can show the parameters such as voltage, electric current, power factor; have simultaneously overcurrent, overvoltage, under voltage, phase shortage, cross the defencive functions such as the multiple comprehensive protection function such as harmonic wave, overcompensation, the system failure, phase shortage, overload and self discharge; and has a parameters memorizing function; do not lose parameter behind the system blackout, automatically enter the characteristics such as running status behind the power system restoration.
Adopted advanced dynamic compensation controller to operate control in this compensation arrangement design, and adopted Intelligent contactless switch to carry out the switching of capacitor, can be according to voltage, electric current, the power factor size automatic switching capacitor group of real-time sampling, and guarantee that capacitor can drop into and cut off during current over-zero when voltage zero-cross, do not produce overvoltage, be specially adapted to the quick tracking compensation that frequent operation and load often change.
The utlity model has following characteristics:
1, guarantee that voltage zero-cross closes a floodgate during switched capacitor, the current over-zero separating brake, shove little during switch on and off and overvoltage low, the contact is sintering not.
2, in service without pressure drop, do not consume energy, do not produce harmonic wave.
3, have multi-protective function, operational reliability is high.
4, response speed is fast, can follow the tracks of constantly the electrical network dynamic change, realizes quick dynamic reactive auto-compensation.
The low-voltage dynamic reactive power compensation arrangement is served for economize on electricity, and its this product self is exactly a good product that economizes on resources.Widely apply in a lot of areas at home at present, has obtained good result.Believe that As time goes on this change will greatly promote the development of low-voltage reactive power automatic compensation technology, produce good economic results in society.
Description of drawings
Fig. 1 is the utility model embodiment circuit theory diagrams.
Embodiment
As shown in Figure 1, it comprises power circuit breaker 1, some groups of low voltage three-phase capacitor 2 summation current transformers 3, it also comprises dynamic compensation controller 4, several three-phase intelligent noncontacting switch 5 and several branch circuit breakers 6 identical with 2 groups of numbers of low voltage three-phase capacitor, current transformer 3 primary sides are installed on 7 one phase lines of low-voltage bus bar, the two ends of current transformer 3 secondary sides link to each other with two current signal inputs of dynamic compensation controller 4 respectively, two phase voltage signal inputs of dynamic compensation controller 4 are installed current transformer 3 in addition two phase lines in addition with low-voltage bus bar 7 respectively and are linked to each other, the power end of power circuit breaker 1 links to each other with low-voltage bus bar 7 each phase line respectively, load side links to each other respectively with the power end of each branch circuit breaker 6 and the three-phase power input end of dynamic compensation controller 4, the power supply input zero line side of dynamic compensation controller 4 links to each other with low-voltage bus bar 7 zero lines, the load side of each branch circuit breaker 6 links to each other with the power end of on the same group three-phase intelligent noncontacting switch 5 respectively, the load side of each three-phase intelligent noncontacting switch 5 links to each other with on the same group low voltage three-phase capacitor 2 respectively, and the working power input of each three-phase intelligent noncontacting switch 5 links to each other with the working power output of dynamic compensation controller 4 respectively, the control signal input links to each other with each control letter output of dynamic compensation controller 4 respectively.
It also comprises compensation arrangement housing 8 and three lightning arresters 9, each lightning arrester 9 is installed in the compensation arrangement housing 1 and is connected between power circuit breaker 1 load side each and compensation arrangement housing 8 earth terminals, power circuit breaker 1, respectively organize low voltage three-phase capacitor 2, each three-phase intelligent noncontacting switch 5 and each branch circuit breaker 6 and be installed in respectively in the compensation arrangement housing 1, dynamic compensation controller 4 is installed on compensation arrangement housing 8 panels.Be connected with respectively capacitor relay indicating light 10 between one and low-voltage bus bar 7 zero lines of each three-phase intelligent noncontacting switch 5 load side.Each capacitor relay indicating light 10 is installed in respectively on compensation arrangement housing 8 panels.Be respectively equipped with fuse 11 between the three-phase power input end of the load side of power circuit breaker 1 and dynamic compensation controller 4.Each fuse 11 is installed in respectively on compensation arrangement housing 8 panels.
Claims (4)
1. low-voltage dynamic reactive power compensation arrangement, it comprises power circuit breaker (1), some groups of low voltage three-phase capacitors (2) summation current transformers (3), it is characterized in that: it also comprises dynamic compensation controller (4), several three-phase intelligent noncontacting switches (5) and several branch circuit breaker (6) identical with low voltage three-phase capacitor (2) group number, current transformer (3) primary side is installed on (7) phase lines of low-voltage bus bar, the two ends of current transformer (3) secondary side link to each other with two current signal inputs of dynamic compensation controller (4) respectively, two phase voltage signal inputs of dynamic compensation controller (4) are installed current transformer (3) in addition two phase lines in addition with low-voltage bus bar (7) respectively and are linked to each other, the power end of power circuit breaker (1) links to each other with each phase line of low-voltage bus bar (7) respectively, load side links to each other respectively with the power end of each branch circuit breaker (6) and the three-phase power input end of dynamic compensation controller (4), the power supply input zero line side of dynamic compensation controller (4) links to each other with low-voltage bus bar (7) zero line, the load side of each branch circuit breaker (6) links to each other with the power end of on the same group three-phase intelligent noncontacting switch (5) respectively, the load side of each three-phase intelligent noncontacting switch (5) links to each other with on the same group low voltage three-phase capacitor (2) respectively, and the working power input of each three-phase intelligent noncontacting switch (5) links to each other with the working power output of dynamic compensation controller (4) respectively, the control signal input links to each other with each control letter output of dynamic compensation controller (4) respectively.
2. low-voltage dynamic reactive power compensation arrangement as claimed in claim 1, it is characterized in that described it also comprise compensation arrangement housing (8) and three lightning arresters (9), each lightning arrester (9) is installed in the compensation arrangement housing (1) and is connected between power circuit breaker (1) load side each and compensation arrangement housing (8) earth terminal, power circuit breaker (1), each organizes low voltage three-phase capacitor (2), each three-phase intelligent noncontacting switch (5) and each branch circuit breaker (6) are installed in respectively in the compensation arrangement housing (1), and dynamic compensation controller (4) is installed on compensation arrangement housing (8) panel.
3. low-voltage dynamic reactive power compensation arrangement as claimed in claim 2, it is characterized in that being connected with respectively capacitor relay indicating light (10) between one and low-voltage bus bar (7) zero line of described each three-phase intelligent noncontacting switch (5) load side, each capacitor relay indicating light (10) is installed in respectively on compensation arrangement housing (8) panel.
4. low-voltage dynamic reactive power compensation arrangement as claimed in claim 2, it is characterized in that being respectively equipped with fuse (11) between the three-phase power input end of the load side of described power circuit breaker (1) and dynamic compensation controller (4), each fuse (11) is installed in respectively on compensation arrangement housing (8) panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320282335 CN203261040U (en) | 2013-05-22 | 2013-05-22 | Low-voltage dynamic reactive power compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320282335 CN203261040U (en) | 2013-05-22 | 2013-05-22 | Low-voltage dynamic reactive power compensation device |
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| CN203261040U true CN203261040U (en) | 2013-10-30 |
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| CN 201320282335 Expired - Fee Related CN203261040U (en) | 2013-05-22 | 2013-05-22 | Low-voltage dynamic reactive power compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656059A (en) * | 2016-03-28 | 2016-06-08 | 国网山东省电力公司章丘市供电公司 | High-load-variation-rate low-voltage distribution network reactive power compensation cabinet |
| CN107591821A (en) * | 2017-09-27 | 2018-01-16 | 安徽理工大学 | A kind of low-voltage dynamic reactive power compensation based on STM32 |
| CN107732933A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | Exempt from the idle control assembly structure of d type Intelligent low-voltage |
| CN109980633A (en) * | 2019-02-26 | 2019-07-05 | 国网浙江慈溪市供电有限公司 | For the power conversion method of power grid, system and electronic equipment |
-
2013
- 2013-05-22 CN CN 201320282335 patent/CN203261040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656059A (en) * | 2016-03-28 | 2016-06-08 | 国网山东省电力公司章丘市供电公司 | High-load-variation-rate low-voltage distribution network reactive power compensation cabinet |
| CN107591821A (en) * | 2017-09-27 | 2018-01-16 | 安徽理工大学 | A kind of low-voltage dynamic reactive power compensation based on STM32 |
| CN107732933A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | Exempt from the idle control assembly structure of d type Intelligent low-voltage |
| CN109980633A (en) * | 2019-02-26 | 2019-07-05 | 国网浙江慈溪市供电有限公司 | For the power conversion method of power grid, system and electronic equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20150522 |
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| EXPY | Termination of patent right or utility model |