CN207664628U - A kind of multi-machine parallel connection coupling device of Static Var Compensator - Google Patents
A kind of multi-machine parallel connection coupling device of Static Var Compensator Download PDFInfo
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- CN207664628U CN207664628U CN201721776080.5U CN201721776080U CN207664628U CN 207664628 U CN207664628 U CN 207664628U CN 201721776080 U CN201721776080 U CN 201721776080U CN 207664628 U CN207664628 U CN 207664628U
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- static var
- var compensator
- current
- load
- svg
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The utility model is a kind of multi-machine parallel connection coupling device of Static Var Compensator, its main feature is that, including several Static Var Compensator SVG wired in parallel, total current mutual inductor CT load currents end is connected to mains side, successively with several Static Var Compensator SVG wired in parallel, the operating mode of several Static Var Compensator SVG modules is all disposed within load side at the secondary side current end of total current mutual inductor CT；The Current Transmit for measuring its own output current value is mounted on outside the outlet of each module of several Static Var Compensator SVG modules, secondary side is attempted by between the entrance and total current of load current detection line, is carried out vector superposed.With simple in structure, effect is good, and reliability is high, it is low in energy consumption the advantages that.
Description
Technical field
The utility model is related to reactive power compensation technology fields, are a kind of multi-machine parallel connection coupling dresses of Static Var Compensator
It sets.
Background technology
With the fast development of electronic technology, low-pressure reactive compensation equipment shows small-sized integrated and modular
Trend, such as the Static Var Compensator SVG of modular and integrated intelligent capacitor group device, its main feature is that small,
Reliability height, lower power consumption, intelligence degree are high, can be with isolated operation.SVG operation logics are by external impressed current mutual inductor CT
Load current is measured, analyzes and determines the property of load current, then pointedly send out compensation electric current, being finally reached makes mains side
Electric current is optimal.Static Var Compensator SVG external impressed current mutual inductors CT measures load current, and there are two types of connection, a kind of connections such as figure
It is the load side that Current Transmit is mounted on to Static Var Compensator SVG compensation points, at this time static reactive shown in 1
The electric current that device SVG is detected is simple load current, and Static Var Compensator SVG is when calculating directly using measured value
It can.Another connection as shown in Fig. 2, be by Current Transmit be mounted on Static Var Compensator SVG compensation points mains side,
The electric current that Static Var Compensator SVG is detected at this time be the sum of load current and Static Var Compensator SVG output currents, because
This Static Var Compensator SVG must cut itself electric current in internal calculation from the electric current detected can just obtain load current
Carry out specific aim compensation.So Static Var Compensator SVG is when in use, for the position of Current Transmit installation, it is necessary to
The installation site that clear setting electric current mutual inductor CT in function is set in Static Var Compensator SVG modules be in load side or
In mains side.When compensation capacity demand exceeds separate unit module capacity, Static Var Compensator SVG modules can be multiple arranged side by side
Operation.When multiple Static Var Compensator SVG module paired runnings, existing typical wiring is as shown in figure 3, be that electric current is mutual
The secondary side of sensor CT sequentially passes through all SVG modules, and each Static Var Compensator SVG modules measure the shape of load simultaneously
State, parameter, sharing of load principle and the state of each Static Var Compensator SVG modules are by serial port between
It is transmitted into row information, the characteristics of this typical wiring mode, each Static Var Compensator SVG modules can be balanced negative when being operation
Undertake charged current, but the disadvantage is that：Whole efficiency can decline when load is small, and power consumption is larger；Each Static Var Compensator
Needing to transmit information mutually by serial communication between SVG modules could realize to failure Static Var Compensator SVG modules
Processing, control mode are complicated.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, effect is good, reliability
Height, the multi-machine parallel connection coupling device of Static Var Compensator low in energy consumption.
The technical scheme adopted for realizing the purpose of the utility model is a kind of multi-machine parallel connection coupling dress of Static Var Compensator
It sets, characterized in that it includes several Static Var Compensator SVG wired in parallel, and total current mutual inductor CT load currents end connects
Be connected on mains side, the secondary side current end of total current mutual inductor CT successively with several Static Var Compensator SVG wired in parallel,
The operating mode of several Static Var Compensator SVG modules is all disposed within load side；In several Static Var Compensator SVG
The Current Transmit for measuring its own output current value is mounted on outside the outlet of each module of module, it is secondary
Side is attempted by between the entrance and total current of load current detection line, is carried out vector superposed.
A kind of the advantages of multi-machine parallel connection coupling device of Static Var Compensator of the utility model, is embodied in：
1. can realize that any amount Static Var Compensator SVG modules connect side by side, each Static Var Compensator SVG moulds
It controls and coordinates without software between block, respective automatic independent operating is unrelated with other Static Var Compensator SVG modules；
2. only being coupled by the Current Transmit of itself outlet between each Static Var Compensator SVG modules, it will be able to
Realize that tracking is seamlessly connected successively to work in coordination, the Current Transmit load current of the outlet each Static Var Compensator SVG with
External Current Transmit load current no-load voltage ratio is identical, and is both configured to load side；
3. global reliability is high, any one or more Static Var Compensator SVG module failures exit or stop transport not
Other Static Var Compensator SVG modules are influenced to work in coordination operation；
4. when load variations, each Static Var Compensator SVG modules can put into or exit successively automatically, can effectively reduce
Equipment runs noise and power consumption；
5. simple in structure, effect is good, and reliability is high.
Description of the drawings
Fig. 1 is the load side schematic diagram that CT is mounted on Static Var Compensator SVG compensation points；
Fig. 2 is the mains side schematic diagram that CT is mounted on Static Var Compensator SVG compensation points；
Fig. 3 is that the secondary side of current transformer load current CT sequentially passes through all module diagrams；
Fig. 4 is a kind of multi-machine parallel connection coupling device schematic diagram of Static Var Compensator of the utility model embodiment.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of multi-machine parallel connection coupling device of Static Var Compensator of the utility model, including several static var compensations
Device SVG wired in parallel is repaid, total current mutual inductor CT load currents end is connected to mains side, the secondary side of total current mutual inductor CT
Current terminal successively with several Static Var Compensator SVG wired in parallel, the work of several Static Var Compensator SVG modules
Pattern is all disposed within load side；It is mounted on outside the outlet of each module of several Static Var Compensator SVG modules
Current Transmit for measuring its own output current value, secondary side are attempted by the entrance of load current detection line and total
Between electric current, carry out vector superposed.Mains side total current mutual inductor CT current directions are that mains side is directed toward load side, and total current is mutual
The secondary side of sensor CT flows out direction as electric current using positive current direction and sequentially passes through several Static Var Compensator from Same Name of Ends
SVG modules, the Current Transmit for measuring itself output current value；Each mould of several Static Var Compensator SVG modules
The direction of block Current Transmit output current is to be directed toward power supply from equipment；Each module current transformers CT secondary sides are with anti-
Direction is connected in parallel on itself current measurement terminal Same Name of Ends and the secondary side reflux end of total current mutual inductor CT；Total current mutual inductor CT
With each module current transformers CT of several Static Var Compensator SVG modules to go out line current no-load voltage ratio identical.
With reference to Fig. 4, by taking the device that four Static Var Compensator SVG wired in parallel are constituted as an example, it is described in detail a kind of quiet
The only particular content of the multi-machine parallel connection coupling process of reactive-load compensator, but it is not exhaustive, to those skilled in the art, root
According to the utility model Fig. 4 enlightenments obtained any number of Static Var Compensator can be obtained without creative work
The device that SVG wired in parallel is constituted.The static reactive that embodiment is made of four Static Var Compensator SVG wired in parallel
The multi-machine parallel connection coupling process of device, total current mutual inductor CT are mounted on mains side, and secondary side current sequentially passes through static nothing
Work(compensator SVG module 1- Static Var Compensator SVG modules 4, Static Var Compensator SVG module 1- static reactives
The operating mode of device SVG modules 4 is both configured to load side.Static Var Compensator SVG module 1- Static Var Compensator SVG moulds
The outlet of block 4 corresponds to installation CT1-CT4, and for measuring its own output current value, secondary side is attempted by itself load current
Between the entrance and total current of detection line, carry out vector superposed.From fig. 4, it can be seen that the mains side that total current mutual inductor CT is detected
Total current I=If+I1+I2+I3+I4, connect and respectively flow through Static Var Compensator SVG module 1- Static Var Compensator SVG moulds
The current detecting end of block 4, by CT1- corresponding with Static Var Compensator SVG module 1- Static Var Compensator SVG modules 4
After the detection electric current superposition of CT4, the electric current detected is respectively：I4=I-I4=If-I1-I2-I3；I3=i4-I2=If-I1-
I2；I2=i3-I2=If-Ict1；I1=i2-I2=If。
In formula：I:The total current of power supply offered load and compensation equipment；If:Load current；Ib：Static reacance in parallel
Total compensation electric current of compensator SVG modules output；I1：The compensation electric current that Static Var Compensator SVG modules 1 export；I2：It is static
The compensation electric current that reactive-load compensator SVG modules 1 export；I3：The compensation electric current that Static Var Compensator SVG modules 1 export； I3：
The compensation electric current that Static Var Compensator SVG modules 1 export；i1：1 measurement end of Static Var Compensator SVG modules passes through electricity
Current transformer convert and be superimposed after input current；i2：2 measurement end of Static Var Compensator SVG modules passes through Current Mutual Inductance
Device convert and be superimposed after input current；i3：The input after current transformer converts and is superimposed of 3 measurement end of SVG modules
Electric current；i4：The input current after current transformer converts and is superimposed of 4 measurement end of Static Var Compensator SVG modules.
A kind of course of work of the multi-machine parallel connection coupling device of Static Var Compensator of the utility model is:First by quiet
Only the variation of 1 follow load electric current of reactive-load compensator SVG modules exports I1, Static Var Compensator SVG modules 2 follow load electricity
The variation of stream and Static Var Compensator SVG modules 1 exports I2,3 follow load electric current of Static Var Compensator SVG modules and quiet
Only the variation of reactive-load compensator SVG modules 2 and Static Var Compensator SVG modules 1 exports I3, Static Var Compensator SVG moulds
4 follow load electric current of block, Static Var Compensator SVG modules 3, Static Var Compensator SVG modules 2 and Static Var Compensator
The variations of SVG modules 1 exports I4, and so on can connect n module, the multi-machine parallel connection coupling of the Static Var Compensator is tied
Structure completes the tracking adjustment to load current, the Static Var Compensator SVG functions of the same monomer large capacity such as effect.
(pay attention to：The Current Transmit of the outlet installation of each Static Var Compensator SVG modules must be with foreign current mutual inductor CT
No-load voltage ratio is identical, and the operating mode of all Static Var Compensator SVG, the setting of Current Transmit position are all set to load
Side).
Specific embodiment of the present utility model is not exhaustive, and those skilled in the art are without the simple of creative work
It replicates and improves, the protection domain of the utility model claims should be belonged to.
Claims (1)
1. a kind of multi-machine parallel connection coupling device of Static Var Compensator, characterized in that it includes：Several static reactives
Device SVG wired in parallel, total current mutual inductor CT load currents end are connected to mains side, the secondary side current of total current mutual inductor CT
End successively with several Static Var Compensator SVG wired in parallel, the operating mode of several Static Var Compensator SVG modules
It is all disposed within load side；It is mounted on and is used for outside the outlet of each module of several Static Var Compensator SVG modules
The Current Transmit of its own output current value is measured, secondary side is attempted by the entrance and total current of load current detection line
Between, it carries out vector superposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721776080.5U CN207664628U (en) | 2017-12-19 | 2017-12-19 | A kind of multi-machine parallel connection coupling device of Static Var Compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721776080.5U CN207664628U (en) | 2017-12-19 | 2017-12-19 | A kind of multi-machine parallel connection coupling device of Static Var Compensator |
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| Publication Number | Publication Date |
|---|---|
| CN207664628U true CN207664628U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721776080.5U Expired - Fee Related CN207664628U (en) | 2017-12-19 | 2017-12-19 | A kind of multi-machine parallel connection coupling device of Static Var Compensator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501912A (en) * | 2019-04-01 | 2019-11-26 | 东北电力大学 | Meet the multi-machine power system adaptive fuzzy dynamic surface sliding-mode control of default output tracking performance |
-
2017
- 2017-12-19 CN CN201721776080.5U patent/CN207664628U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501912A (en) * | 2019-04-01 | 2019-11-26 | 东北电力大学 | Meet the multi-machine power system adaptive fuzzy dynamic surface sliding-mode control of default output tracking performance |
| CN110501912B (en) * | 2019-04-01 | 2022-09-27 | 东北电力大学 | Self-adaptive fuzzy dynamic surface sliding mode control method for multi-machine power system meeting preset output tracking performance |
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| Date | Code | Title | Description |
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| 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: 20180727 Termination date: 20211219 |