CN207234415U - Intelligent three-phase imbalance compensation device - Google Patents
Intelligent three-phase imbalance compensation device Download PDFInfo
- Publication number
- CN207234415U CN207234415U CN201721282548.5U CN201721282548U CN207234415U CN 207234415 U CN207234415 U CN 207234415U CN 201721282548 U CN201721282548 U CN 201721282548U CN 207234415 U CN207234415 U CN 207234415U
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- China
- Prior art keywords
- low voltage
- electric network
- voltage electric
- controller
- triple line
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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
Abstract
The utility model discloses a kind of intelligent three-phase imbalance compensation device, including low voltage electric network triple line power cord, transformer component and controller, connect the filter assembly of low voltage electric network triple line, the output terminal for connecting the transformer component of low voltage electric network triple line is connected with sampling hold circuit input terminal, and the output terminal of sampling hold circuit is sent the sample rate current digital signal of low voltage electric network triple line to the signal input part of controller by A/D modular converters.Multiple capacitor elements are connected controller by the utility model by fling-cut switch, are turned on being controlled by the controller according to the control signal that the electric current detected produces.There is the three-phase imbalance intelligent compensation for load.
Description
Technical field：
The utility model belongs to grid power compensation device technical field, and in particular to a kind of intelligent three-phase is uneven to mend
Repay device.
Background technology：
Tri-phase unbalance factor is the important indicator of electric system, and the excessive harm that is above standard of three-phase imbalance is very much：It can draw
Electrizer adds fever and vibration；Cause the protection misoperation using negative phase-sequence element as starting element；Convertor equipment can be caused to cause
Extra current；Transformer can produce a phase coil and spend the heat affecting service life；Line loss etc. can be increased.Therefore three-phase imbalance compensation
Just become in the operational process of power grid extremely important.
At present three-phase imbalance main reason is that load it is unbalanced, cause unbalanced reason to have asking during design
Topic, also has for example a certain phase load of accidental sexual factor since the electricity consumption of user section time collective is on the low side, in addition power electronic equipment
Nonlinear load increase caused by a large amount of uses is also the main reason for producing three-phase imbalance.Low voltage electric network three-phase imbalance
Electric current is a kind of phenomenon of generally existing.Low voltage electric network provides residence by 10/0.4KV transformers in a manner of three-phase and four-line
Civilian electricity.Originally these resident's single-phase loads are averaged is tapped in A, B, C three-phase electricity, reaches a kind of equilibrium state.But
In actual operation, the difference of the uncontrollable increase-volume of single-phase user, moment powerful load access and single-phase load electricity consumption
When property etc., is all the reason for causing three-phase current unbalance, gently then reduces the power supplying efficiency of distribution transformer, heavy then cause distribution
Transformer such as burns at the major accident.
Utility model content：
The utility model is directed to the three-phase imbalance problem of current power grid generally existing, there is provided a kind of intelligent three-phase is uneven
Compensation device.
The utility model solves technical solution used by above-mentioned technical problem：A kind of intelligent three-phase imbalance compensation dress
Put, including low voltage electric network triple line power cord, transformer component and controller, the wave filter group of connection low voltage electric network triple line
Part, it is characterized in that：The output terminal and sampling hold circuit input terminal for connecting the transformer component of the low voltage electric network triple line connect
Connect, the output terminal of sampling hold circuit is sent the sample rate current digital signal of low voltage electric network triple line by A/D modular converters
To the signal input part of controller；The control terminal one of controller contacts control circuit, alternate plenary capacitance to San Tong method connection is grid-connected
Compensation circuit and alternate full inductively compensated circuit；The grid-connected contact control circuit is that concatenate low voltage electric network triple line respectively can
Reconnect after controlling silicon fling-cut switch one and corresponding capacitor, the control terminal one of controller is used to control silicon controlled switching to switch
One each control terminal；The alternate plenary capacitance compensation circuit is will to concatenate silicon-controlled throwing between wantonly two of low voltage electric network triple line
Cut and close two and corresponding capacitor, the control terminal two of controller is used for each control terminal for controlling silicon controlled switching switch two；It is described
Alternate full inductively compensated circuit is silicon controlled switching switch three and corresponding electricity will to be concatenated between wantonly two of low voltage electric network triple line
Sensor, the control terminal three of controller are used for each control terminal for controlling silicon controlled switching switch three.
Input terminal installation contactor on the low voltage electric network triple line power cord.Silicon controlled switching switch one to
Three are in parallel by the contact of bidirectional thyristor and contactor respectively, when capacitor or inductor input, first by controller
Control bidirectional thyristor is turned in voltage over zero, capacitor or inductor is put into, then starting contactor, contactor
Contact closure, makes after stabilization to be accessed bidirectional thyristor cut-off complete input.
The beneficial effects of the utility model：Three-phase imbalance compensation device provided by the utility model, by multiple capacitors
Part connects controller by fling-cut switch, is led with being controlled by the controller according to the control signal that the electric current detected produces
It is logical.There is the three-phase imbalance intelligent compensation for load, controller is counted according to the three-phase load situation of sampling
Calculate, judge whether it meets the condition of plenary capacitance compensation, if meeting with regard to alternate plenary capacitance compensation circuit；If it is unsatisfactory for plenary capacitance benefit
The condition repaid then carries out mixed compensation according to capacitance, inductance or optionally only carries out reactive power compensation by user.
Brief description of the drawings：
Fig. 1 is the utility model intelligent three-phase imbalance compensation circuit diagram.
Figure label 1 is filter circuit, and 2 be transformer component, and 3 be sampling hold circuit, and 4 be A/D modular converters, and 5 are
Controller, 6 be load, and 7 be grid-connected contact control circuit, and 8 be alternate plenary capacitance compensation circuit, and 9 be alternate full inductance compensation electricity
Road.
Embodiment：
Such as the intelligent three-phase imbalance compensation device of Fig. 1, including low voltage electric network triple line power cord, 2 and of transformer component
Controller 5, connects filter assembly of low voltage electric network triple line etc..
Wherein, the output terminal and 3 input terminal of sampling hold circuit of the transformer component 2 of the low voltage electric network triple line are connected
Connection, the output terminal of sampling hold circuit 3 is by A/D modular converters 4 by the sample rate current digital signal of low voltage electric network triple line
Send to the signal input part of controller 5.
The control terminal one of controller 5 contacts control circuit 7, alternate 8 and of plenary capacitance compensation circuit to San Tong method connection is grid-connected
Alternate full inductively compensated circuit 9.
Specifically, the grid-connected contact control circuit 7 is that low voltage electric network triple line is concatenated silicon controlled switching switch respectively
One gets up with reconnection after corresponding capacitor, and the control terminal one of controller 5 is used for the respectively control for controlling silicon controlled switching switch one
End.
Controller 5 is calculated according to the three-phase load situation of sampling, judges whether it meets the condition of plenary capacitance compensation,
If meet with regard to alternate plenary capacitance compensation circuit 8.Alternate plenary capacitance compensation circuit 8 is by the wantonly between two of low voltage electric network triple line
Silicon controlled switching switch two and corresponding capacitor are concatenated, the control terminal two of controller 5 is used to control silicon controlled switching switch two
Each control terminal.
Controller 5 is calculated according to the three-phase load situation of sampling, judges whether it meets the condition of plenary capacitance compensation,
Mixed compensation is carried out according to capacitance, inductance or nothing is optionally only carried out by user if the condition of plenary capacitance compensation is unsatisfactory for
Reactive power compensator.The alternate full inductively compensated circuit 9 wherein further related to is will to be gone here and there between wantonly two of low voltage electric network triple line
Silicon controlled switching switch three and corresponding inductor are connect, the control terminal three of controller 5 is used to control each of silicon controlled switching switch three
Control terminal.
In Fig. 1 as can be seen that each silicon controlled switching switch be respectively by bidirectional thyristor and contactor contact mutually simultaneously
Connection, when capacitor or inductor input, controls bidirectional thyristor to be turned in voltage over zero, by electricity by controller 5 first
Container or inductor are put into, then starting contactor, the contact closure of contactor, end bidirectional thyristor after stabilization to be accessed
Complete input.
Claims (3)
1. a kind of intelligent three-phase imbalance compensation device, including low voltage electric network triple line power cord, transformer component and controller,
The filter assembly of low voltage electric network triple line is connected, it is characterized in that：Connect the transformer component of the low voltage electric network triple line
Output terminal is connected with sampling hold circuit input terminal, and the output terminal of sampling hold circuit is by A/D modular converters by low voltage electric network
The sample rate current digital signal of triple line is sent to the signal input part of controller；The control terminal one of controller to San Tong method connects
Grid-connected contact control circuit, alternate plenary capacitance compensation circuit and alternate full inductively compensated circuit；The grid-connected contact control circuit
It is to be reconnected after low voltage electric network triple line is concatenated silicon controlled switching switch one and corresponding capacitor respectively, the control of controller
End one processed is used for each control terminal for controlling silicon controlled switching switch one；The alternate plenary capacitance compensation circuit is by low voltage electric network three
Silicon controlled switching switch two and corresponding capacitor are concatenated between wantonly two of phase line, the control terminal two of controller is used to control controllable
Each control terminal of silicon fling-cut switch two；The alternate full inductively compensated circuit is will to be gone here and there between wantonly two of low voltage electric network triple line
Silicon controlled switching switch three and corresponding inductor are connect, the control terminal three of controller is used for each control for controlling silicon controlled switching switch three
End processed.
2. intelligent three-phase imbalance compensation device according to claim 1, it is characterized in that：In the low voltage electric network triple line
Input terminal installation contactor on power cord.
3. intelligent three-phase imbalance compensation device according to claim 1, it is characterized in that：The silicon controlled switching switch one
To three it is in parallel by the contact of bidirectional thyristor and contactor respectively, when capacitor or inductor input, first by controlling
Device control bidirectional thyristor is turned in voltage over zero, and capacitor or inductor are put into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282548.5U CN207234415U (en) | 2017-09-30 | 2017-09-30 | Intelligent three-phase imbalance compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282548.5U CN207234415U (en) | 2017-09-30 | 2017-09-30 | Intelligent three-phase imbalance compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207234415U true CN207234415U (en) | 2018-04-13 |
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ID=61851114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721282548.5U Active CN207234415U (en) | 2017-09-30 | 2017-09-30 | Intelligent three-phase imbalance compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207234415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519207A (en) * | 2018-04-27 | 2018-09-11 | 成都麦隆电气有限公司 | A kind of test method and test system |
| CN116207758A (en) * | 2023-04-28 | 2023-06-02 | 广东创辉电力工程有限公司 | Power generation equipment control system and method in power supply system |
-
2017
- 2017-09-30 CN CN201721282548.5U patent/CN207234415U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519207A (en) * | 2018-04-27 | 2018-09-11 | 成都麦隆电气有限公司 | A kind of test method and test system |
| CN116207758A (en) * | 2023-04-28 | 2023-06-02 | 广东创辉电力工程有限公司 | Power generation equipment control system and method in power supply system |
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