CN107528328A - A kind of electric energy governing device in power distribution network - Google Patents
A kind of electric energy governing device in power distribution network Download PDFInfo
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- CN107528328A CN107528328A CN201710977040.5A CN201710977040A CN107528328A CN 107528328 A CN107528328 A CN 107528328A CN 201710977040 A CN201710977040 A CN 201710977040A CN 107528328 A CN107528328 A CN 107528328A
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- module
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- electric energy
- phase
- distribution network
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Classifications
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
-
- 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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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 invention belongs to power system reactive power control technology field, more particularly to the electric energy governing device (device can be with compensating reactive power with administering three-phase imbalance) in a kind of power distribution network, including commutation module, current acquisition module, compensating module and divide control module.Global design of the present invention is simple, cost-effective, is easy to implement and promotes, integrated height, and control collaborative is high, easy for installation, avoids repeating to construct.
Description
Technical field
The invention belongs to power system reactive power control and three-phase imbalance Treatment process field, more particularly to a kind of distribution
Electric energy governing device in net.
Background technology
Reactive power compensation Reactive power compensation, abbreviation reactive-load compensation, in power supply system
In play a part of to improve the power factor of power network, reduce the loss of supply transformer and conveying circuit, improve power supplying efficiency, change
Kind power supply environment.So reactive power compensation device be in power supply system one it is indispensable very important
Position.Rational selection compensation device, can accomplish to reduce the loss of power network to greatest extent, improve power grid quality.Instead
It, such as selection or improper use, may cause the factors such as electric power system, voltage pulsation, harmonic wave increase.
Compensation at this stage generally installs electric energy governing device under transformer, to line loss on low-pressure side transmission line of electricity
Uncompensated effect, and the specific setting of compensation at this stage, its compensation effect are also bad.
The content of the invention
The present invention is directed to the problem of above-mentioned, there is provided the electric energy governing device in a kind of power distribution network.
In order to achieve the above object, the technical solution adopted by the present invention is,
A kind of electric energy governing device in power distribution network, including commutation module, current acquisition module, compensating module and
Divide control module, the side of the commutation module away from current acquisition module is provided with the voltage acquisition end on live wire
Son；
The commutation module includes the first relay being arranged on live wire and the crystalline substance being arranged in parallel with the first relay
Brake tube, the resistance set with Thyristors in series is provided with the branch road where the IGCT；
The compensation electricity that the compensating module includes the connecting wire of connection zero line and live wire and is arranged in connecting wire
Hold inductance and compensation controlling switch；
The control module also includes main control module and divides control module；
The current acquisition module, tied for being detected to the current value Jing Guo commutation resume module, and by detection
Fruit is transferred to main control module；
The voltage acquisition terminal, it is to be transferred to main control module for gathering three-phase voltage, and by testing result.
Preferably, it is described compensation controlling switch include connecting wire on the second relay and with the second relay
The 3rd relay being arranged in parallel, it is provided with what is be arranged in series with the 3rd relay on the branch road where the 3rd relay
Current-limiting resistance.
Preferably, second relay uses low resistance relay.
Preferably, the 3rd relay uses high-melting-point contact relay.
Preferably, the live wire includes three phase lines, respectively A phase lines, B phase lines, C phase lines, the A phase lines, B phases
Commutation module and voltage acquisition terminal are provided with line, C phase lines.
Preferably, the current acquisition module is arranged on the main line being made up of A phase lines, B phase lines, C phase lines.
Preferably, also include signal transmission module.
Preferably, the transport module is GPRS module.
Compared with prior art, the advantages and positive effects of the present invention are, realize idle local compensation, reduce
The line loss of transmission line of electricity, solving causes because of idle problem phase-change switch voltage over zero and current over-zero in switching
The inconsistent caused problem of shoving of point.Simultaneously because electric energy governing device is combined with phase-change switch, construction is reduced
Amount.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the practical application sketch of the electric energy governing device in power distribution network；
Fig. 2 is the structural representation of the electric energy governing device in power distribution network；
Fig. 3 is the fundamental diagram of main control module；
Fig. 4 is the fundamental diagram of point control module；
Fig. 5 is the structural representation of compensation controlling switch；
Fig. 6 is the workflow diagram of compensation controlling switch；
Fig. 7 is the fundamental diagram of compensating module；
More than in each figure, 1, inverting module；11st, current-limiting resistance；12nd, IGCT；13rd, the first relay 2, compensating module；
21st, the second relay；22nd, the 3rd relay；23rd, current-limiting resistance.
Embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to the accompanying drawings and examples
The present invention will be further described.It should be noted that in the case where not conflicting, in embodiments herein and embodiment
Feature can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other modes described here are different from, therefore, the present invention is not limited to the specific of specification described below
The limitation of embodiment.
Embodiment 1, the invention provides the electric energy governing device in a kind of power distribution network, from figure 1 it appears that right
For whole power distribution network, for the realization of reactive-load compensation, the specific setting of prior art, and seated position set by the present invention
Difference.
Below specifically once, specific setting of the invention and some how to realize the present invention algorithm.
As shown in Fig. 2 the invention mainly comprises：Commutation module, current acquisition module, voltage acquisition terminal, compensation mould
Block, divide control module, main control module and signal transmission module, with reference to shown in Fig. 3 and Fig. 4, it is evident that mainly realize line
The module of road commutation is then commutation module, is to have many regulations during commutation module is realized, that is, is provided with corresponding
Detection module, i.e. current acquisition module and voltage acquisition terminal, its main control module and point control module are then of the invention
Main control portion, i.e. major control module have issued signal, and its corresponding module is just started working, and specifically how to realize work
Make, first no hurry now says, first says the specific composition of above-mentioned module now.
With reference to Fig. 2, Fig. 5, it can be seen that its commutation module includes being arranged on the first relay on live wire and with the
The IGCT that one relay is arranged in parallel, the resistance set with Thyristors in series is provided with the branch road where its IGCT；Under
Face is come illustratively, the specific work process of the commutation module by commutation module control sequential：
Master controller receives the watt current detection signal for each branch road that sub-controller is sent, after carrying out data calculating,
Such as reach commutation requirement, send control signals to corresponding point control module, promote it to control commutation；
Phase-change switch control process optimizes, and realizes the commutation not powered off.
Example：(A phases change B phases), now the stable state of commutation module should be A phase relays input, remainder excision.
1. put into A phase IGCTs；
2. cut off A phase relays；
3. control module detection two-phase voltage is identical, A phase IGCTs are cut off immediately after putting into B phase IGCTs；
(turn on thyristors is Millisecond with shut-off, and its both end voltage difference is very low, and Thyristors in series resistance, effectively suppresses voltage difference band
To shove)
4. put into B phase relays；
5. cut off B phase IGCTs.
From figure 2 it can be seen that its compensating module includes the connecting wire of connection zero line and live wire and is arranged on connection
Compensating electric capacity inductance and compensation controlling switch on wire, are the reactive-load compensations for realizing the branch road for the present invention, protect
Demonstrate,prove the qualified device of the branch power factor.
Its control module also includes main control module and divides control module；
Current acquisition module, it is for being detected to the current value Jing Guo commutation resume module, and testing result is passed
It is defeated by control module；
Voltage acquisition terminal, it is for gathering the branch road three-phase voltage, and testing result is transferred to control module；
For one piece, its algorithm will specifically once, now with two kinds of thinkings, and one kind is all installed on each branch road
Branch road commutation electric energy governing device.This master controller only needs calculating watt current size all right：Calculating process is as follows：
Phase-change switch adjustment three-phase alternating current detailed process be：Master machine control unit receives branch current transformer
Detection signal after, the three-phase current under the various states of the phase-change switch of A, B, C three-phase is all listed, its N branch current
For In, A, B, C three-phase total current are respectively IA、IB、IC, three-phase total current has 3nKind possible state, calculates every kind of state not
The degree of balanceWherein ImaxFor three-phase current maximum, IminIt is uneven for three-phase current minimum value, xth kind state
Weighing apparatus degree is Tx, the phase-change switch correspondence position chosen under minimum degree of unbalancedness state is outgoing position, is realized to three-phase imbalance
The adjustment of degree.
Below by taking four branch roads as an example, then No. four phase-change switches share 81 kinds of operating positions.
Choose minimum TxCorresponding phase-change switch state, it is phase-change switch output state, for example, being computed drawing T9
For the phase-change switch closing position difference of tri-phase unbalance factor minimum value, then the 1st branch road, the 2nd branch road, the 3rd branch road, the 4th branch road
Adjust to A phases, A phases, C phases, C phases, realize the adjustment to three-phase alternating current.
(advantage of this thinking is to be that each branch road can be carried out reactive-load compensation)
Second is exactly to be installed on a part of branch road
Phase-change switch adjustment three-phase alternating current detailed process be：Master machine control unit receives branch current transformer
Detection signal after, calculate not by the electric current of current control, IA1、IB1、 IC1, the phase-change switch of A, B, C three-phase is various
Three-phase current under state is all listed, and its N branch current is In, calculate controlled current flow IA2、IB2、IC2, then A, B, C
Three-phase total current is respectively IA=IA1+IA2、IB=IB1+IB2、IC=IC1+IC2, three-phase total current has 3nKind possible state, is calculated
The degree of unbalancedness of every kind of stateWherein ImaxFor three-phase current maximum, IminFor three-phase current minimum value,
Xth kind state degree of unbalancedness is Tx, it is outgoing position to choose the phase-change switch correspondence position under minimum degree of unbalancedness state, real
Now to the adjustment of tri-phase unbalance factor.
Below so that four branch roads are installed as an example, then No. four phase-change switches share 81 kinds of operating positions.
Choose minimum TxCorresponding phase-change switch state, it is phase-change switch output state, for example, being computed drawing T9
For the phase-change switch closing position difference of tri-phase unbalance factor minimum value, then the 1st branch road, the 2nd branch road, the 3rd branch road, the 4th branch road
Adjust to A phases, A phases, C phases, C phases, realize the adjustment to three-phase alternating current.
After to be adjusted, master controller detects the idle of each branch road, controls the electric capacity electricity of corresponding branching unit input compensation
Sense, but it is not recommended that in this way, because some branch roads can have benefit, it is proposed that also installed additional using main control
Compensating module, realize idle compensation..
It can be seen that from Fig. 2-6
It, which compensates controlling switch, includes the second relay in connecting wire and be arranged in parallel with the second relay the
Three relays, the current-limiting resistance being arranged in series with the 3rd relay, the second relay are provided with the branch road where the 3rd relay
Device uses low resistance relay, and the 3rd relay uses high-melting-point contact relay；
Live wire includes three phase lines, respectively A phase lines, B phase lines, C phase lines, A phase lines, B phase lines, is provided with C phase lines
Commutation module and voltage acquisition terminal.
Current acquisition module is arranged on the main line being made up of A phase lines, B phase lines, C phase lines.
Present invention additionally comprises signal transmission module, transport module is GPRS module.
Controlling switch part recited above is said below, as shown in Figure 5, Figure 6,
For cost-effective spending, controlling switch uses Control.
This generates a problem again, be exactly using Control unlike IGCT control it is so accurate, just return produce
Shove, using following optimization method：
1. use double relay Parallel Control：Relay 1 uses high-melting-point contact relay, such as tungsten, and an electricity of connecting
Resistance, prevents from shoving；Relay 2 uses low resistance relay, is the relay to work long hours.
What 2. the pickup time of relay was to determine, error will not be very big, what the control time of program was also to determine, can
To be timed device delay to pickup time, specific control process is as shown in Fig. 6.
Each branch road sub-controller control compensating module carries out reactive-load compensation, compensation control calculating process such as Fig. 6 to the branch road
It is shown, if the time of relay input be S, at the time of by detecting voltage over zero, pass through control timer and be delayed and journey
Sequence, the integral multiple that the input moment for making relay is 0.01S, similarly by detecting current zero-crossing point at the time of, it is fixed by controlling
When device delay and program, make relay excision the moment be 0.01S integral multiple.
I.e.：1. save switch cost；2. solves condenser capacity attenuation problem.
The main thought of the present invention：1 is that overall mentality of designing is reactive power compensation on the spot, is only had on backbone
Work(electric current, then allows Active current balance；This method is that corresponding each branch road all installs this electric energy governing device.
2 be then the compensating reactive power after watt current balancing, is that this electricity is installed on partial branch corresponding to this method
Energy controlling device, situation about mending mutually is crossed it is possible that running into the situation of mutually no phase splitting device input or occurring certain.So
It is recommended that it is respectively mounted compensating module on exchange ABC three-phases.As shown in Figure 7.
Also need to supplement,
1. we want to judge that a circuit with the presence or absence of idle, exactly judges the relation of voltage and electric current, i.e. their phase
Potential difference, it is therefore desirable to which the amount of detection is voltage and electric current.
2. if be intended merely to see whether electric current balances, only need to measure size of current
It is in order to ensure the current balance type of backbone, so as to play the purpose of energy-conservation, it is necessary to detection 3. phase-change switch
Amount only has electric current, and thus master controller (basic routing line controller) can be positioned on Anywhere, it is recognized that each branch
The electric current on road, the electric current with backbone.Master controller could control sub-controller (branch controller) that load is switched from a phase
To another phase, so as to reach the purpose of basic routing line current balance type.
4. during commutation module commutation, to detect two-phase voltage it is identical at the time of.
5. compensating module will detect voltage over zero when putting into.
6. so sub-controller will detect voltage x current, master controller according to circumstances selects.
7. detection voltage is typically integrated in inside controller now, voltage transformer, current detecting one can also be used
As be Current Transformer.
8. (it is exactly that controller is arrived in the information report of collection, with wireless because current transformer needs to be connected with controller
Communicate good, but cost is higher, and controller and switch are accomplished together, to save cost), voltage sample is also required to and controlled
Device is connected；Master controller and sub-controller are too far apart, so using wireless telecommunications.Typically communicated using GPRS.
The above described is only a preferred embodiment of the present invention, be not the limitation for making other forms to the present invention,
Any person skilled in the art is changed or is modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent embodiment is applied to other fields, but every without departing from technical solution of the present invention content, and the technology according to the present invention is real
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the protection of technical solution of the present invention
Scope.
Claims (8)
1. the electric energy governing device in a kind of power distribution network, including commutation module, current acquisition module, compensating module and sub-control
Molding block, it is characterised in that the side of the commutation module away from current acquisition module is provided with the voltage on live wire
Gather terminal；
The commutation module includes the first relay being arranged on live wire and the IGCT being arranged in parallel with the first relay,
The resistance set with Thyristors in series is provided with branch road where the IGCT；
The compensating electric capacity electricity that the compensating module includes the connecting wire of connection zero line and live wire and is arranged in connecting wire
Sense and compensation controlling switch；
The control module also includes main control module and divides control module；
The current acquisition module, it is for being detected to the current value Jing Guo commutation resume module, and testing result is passed
It is defeated by main control module；
The voltage acquisition terminal, it is to be transferred to main control module for gathering three-phase voltage, and by testing result.
2. the electric energy governing device in a kind of power distribution network according to claim 1, it is characterised in that the compensation control
Switch includes the second relay in connecting wire and the 3rd relay being arranged in parallel with the second relay, the described 3rd after
The current-limiting resistance being arranged in series with the 3rd relay is provided with branch road where electrical equipment.
3. the electric energy governing device in a kind of power distribution network according to claim 2, it is characterised in that second relay
Device uses low resistance relay.
4. the electric energy governing device in a kind of power distribution network according to claim 2, it is characterised in that the 3rd relay
Device uses high-melting-point contact relay.
5. the electric energy governing device in a kind of power distribution network according to claim 1, it is characterised in that the live wire includes
Three phase lines, respectively A phase lines, B phase lines, C phase lines, the A phase lines, B phase lines, commutation module and electricity are provided with C phase lines
Pressure collection terminal.
6. the electric energy governing device in a kind of power distribution network according to claim 5, it is characterised in that the current acquisition
Module is arranged on the main line being made up of A phase lines, B phase lines, C phase lines.
7. the electric energy governing device in a kind of power distribution network according to claim 1, it is characterised in that also passed including signal
Defeated module.
8. the electric energy governing device in a kind of power distribution network according to claim 7, it is characterised in that the transport module
For GPRS module.
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| CN201710977040.5A CN107528328A (en) | 2017-10-19 | 2017-10-19 | A kind of electric energy governing device in power distribution network |
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| CN201710977040.5A CN107528328A (en) | 2017-10-19 | 2017-10-19 | A kind of electric energy governing device in power distribution network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400605A (en) * | 2018-01-16 | 2018-08-14 | 湖南四海中能电力科技有限公司 | A kind of charging power distribution control method and system with intelligent monitoring function |
| CN108429273A (en) * | 2018-03-30 | 2018-08-21 | 杭州海兴电力科技股份有限公司 | Three-phase balanced system suitable for power grid |
| WO2022162415A1 (en) * | 2021-01-26 | 2022-08-04 | Multicharge Oü | A multiphaser device and method for uninterrupted ac power switching between sources of same or different phases |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305470A (en) * | 2015-08-07 | 2016-02-03 | 北京中电博达科技有限公司 | Low-voltage load balance adjustment device for power distribution network, and automatic phase-change switch |
| CN105720595A (en) * | 2016-05-02 | 2016-06-29 | 广州开能电气实业有限公司 | Three-phase load unbalance adjustment apparatus |
| CN106169758A (en) * | 2016-08-01 | 2016-11-30 | 北京燕能电气技术有限公司 | A kind of device and method of automatic raising low voltage three-phase line end voltage |
| CN107181268A (en) * | 2017-06-16 | 2017-09-19 | 国网浙江省电力公司电力科学研究院 | The intelligent phase-change switch and its method of work of anti-phase fault before a kind of energization |
-
2017
- 2017-10-19 CN CN201710977040.5A patent/CN107528328A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305470A (en) * | 2015-08-07 | 2016-02-03 | 北京中电博达科技有限公司 | Low-voltage load balance adjustment device for power distribution network, and automatic phase-change switch |
| CN105720595A (en) * | 2016-05-02 | 2016-06-29 | 广州开能电气实业有限公司 | Three-phase load unbalance adjustment apparatus |
| CN106169758A (en) * | 2016-08-01 | 2016-11-30 | 北京燕能电气技术有限公司 | A kind of device and method of automatic raising low voltage three-phase line end voltage |
| CN107181268A (en) * | 2017-06-16 | 2017-09-19 | 国网浙江省电力公司电力科学研究院 | The intelligent phase-change switch and its method of work of anti-phase fault before a kind of energization |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400605A (en) * | 2018-01-16 | 2018-08-14 | 湖南四海中能电力科技有限公司 | A kind of charging power distribution control method and system with intelligent monitoring function |
| CN108429273A (en) * | 2018-03-30 | 2018-08-21 | 杭州海兴电力科技股份有限公司 | Three-phase balanced system suitable for power grid |
| WO2022162415A1 (en) * | 2021-01-26 | 2022-08-04 | Multicharge Oü | A multiphaser device and method for uninterrupted ac power switching between sources of same or different phases |
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