CN106532748B - A kind of three-phase power consumption imbalance regulating device and its control method, generating set - Google Patents
A kind of three-phase power consumption imbalance regulating device and its control method, generating set Download PDFInfo
- Publication number
- CN106532748B CN106532748B CN201611217529.4A CN201611217529A CN106532748B CN 106532748 B CN106532748 B CN 106532748B CN 201611217529 A CN201611217529 A CN 201611217529A CN 106532748 B CN106532748 B CN 106532748B
- Authority
- CN
- China
- Prior art keywords
- phase
- module
- commutating
- generator
- inversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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 embodiment of the present invention provides a kind of three-phase power consumption imbalance regulating device and its control method, generating set.First commutating phase module of three-phase power consumption imbalance regulating device is connected to form the first commutating phase circuit with corresponding phase in three-phase transmission line and DC bus；Second commutating phase module is connected to form the second commutating phase circuit with corresponding phase in three-phase transmission line and DC bus；Third phase rectification module is connected to form third phase commutating circuit with corresponding phase in three-phase transmission line and DC bus；First inverter module is connected to form the first phase inversion circuit with corresponding phase in three-phase transmission line and DC bus；Second inverter module is connected to form the second phase inversion circuit with corresponding phase in three-phase transmission line and DC bus；Third inverter module is connected to form third phase inversion circuit with corresponding phase in three-phase transmission line and DC bus.
Description
Technical field
The present invention relates to equipment for power transmission and distribution field more particularly to a kind of three-phase power consumption imbalance regulating devices and its controlling party
Method, generating set.
Background technique
When generator, which is detached from municipal power grid, provides electric power to the equipment being connected with the generator alone, for example, power generation
When power equipment of the machine into the building of power failure or market is powered, which is in the state of isolated operation.
Usual above-mentioned power equipment such as computer, television set etc. all uses single-phase electricity consumption, therefore a part of equipment, such as such as
A phase, a part of equipment of one connection generator of load shown in FIG. 1, such as two connection B phase of load, and another part equipment, example
Such as load three connection C phases.In the case, when the start and stop state for connecting different phase loads is inconsistent, it will lead to generator 10
Three-phase current, voltage magnitude it is inconsistent, that is, cause generator 10 three-phase imbalance phenomenon occur.So, work as generator
10 in three-phase imbalance when operating, and the inverse torque of generator 10 can be made to increase, to generate serious vibration and hair
Heat causes shaft to be damaged.In addition, generator 10 can trigger unbalance protection movement under three-phase imbalance serious situation, from
And stoppage protection is carried out, cause to be unable to normal power supply.
It in the prior art, to solve the above-mentioned problems can be by being added in the lesser phase of 10 power consumption of generator or two-phase
Resistance, to promote the power consumption of the phase by resistance consumption electric energy, to achieve the purpose that three-phase power balance.But such one
To come, when three-phase power imbalance difference is bigger, needs increased resistance quantity will be more, the power consumption being consumed is bigger, from
And lead to the wasting of resources.
Summary of the invention
The embodiment of the present invention provides a kind of three-phase power consumption imbalance regulating device and its control method, generating set, energy
It enough avoids solving the problem of that three-phase imbalance causes a large amount of electric energy to be consumed using adding resistance.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
The one side of the embodiment of the present invention provides a kind of three-phase power consumption imbalance regulating device, passes through three-phase transmission line
It is connected with generator, the three-phase power consumption imbalance regulating device includes the first commutating phase module, the second commutating phase module, the
Three phase rectifier module, the first phases inversion module, the second phases inversion module, third phases inversion module, DC bus and controller；
The first commutating phase module, the second commutating phase module and third phase rectification module respectively with the three-phase transmission line
Three-phase correspond；The first commutating phase module is opposite with the first commutating phase module with the three-phase transmission line
The phase and the DC bus answered are connected, to constitute the first commutating phase circuit；The second commutating phase module and described three
Phase transmission line phase corresponding with the second commutating phase module and the DC bus are connected, mutually whole to constitute second
Flow back to road；Third phase rectification module phase corresponding with the third phase rectification module with the three-phase transmission line and
The DC bus is connected, to constitute third phase commutating circuit；First phases inversion module, second phases inversion module
And the third phases inversion module is corresponded with the three-phase of the three-phase transmission line respectively；First inverter module with
Phase corresponding with first inverter module and the DC bus are connected in the three-phase transmission line, to constitute
One phase inversion circuit；Second inverter module and phase corresponding with second inverter module in the three-phase transmission line
And the DC bus is connected, to constitute the second phase inversion circuit；The third inverter module and the three-phase transmission & distribution line
The corresponding phase of third inverter module and the DC bus described in Lu Zhongyu are connected, to constitute third phase inversion circuit；
The controller respectively with the first commutating phase module, the second commutating phase module, the third phase rectification module, described
First phases inversion module, second phases inversion module and the third phases inversion module are connected, and the controller is used for
According to controller instruction respectively to the first commutating phase module, the second commutating phase module, the third phase rectification module,
The opening and closing of first phases inversion module, second phases inversion module or the third phases inversion module is controlled.
Preferably, in the first commutating phase module, the second commutating phase module and the third phase rectification module
Any one rectification module include rectifier and the voltage-stablizer that is connected with the rectifier；The rectifier and described three
Phase corresponding with the rectifier is connected in phase transmission line, and the voltage-stablizer is connected with the DC bus.
Preferably, first phases inversion module, the second phases inversion module, in third phases inversion module any one is inverse
Becoming module includes inverter.
Preferably, further include the power harvester being respectively mutually connected with the controller and generator, for institute
Each phase output power for stating generator is acquired respectively, and collection result is exported to the controller.
Preferably, the controller includes processing module, directive generation module and instruction execution module；The processing mould
Block is connected with the power harvester, total for being exported according to the collection result of the power harvester and the generator
Power calculates the required power compensating value that often balances each other of the generator；Described instruction generation module is used for according to each institute
It states power compensating value and generates the control instruction；Described instruction execution module connects described instruction generation module, for according to institute
Control instruction is stated, the first commutating phase module, the second commutating phase module, the third phase rectification module, described first are controlled
Phases inversion module, the angle of flow of second phases inversion module and the third phases inversion module and Time delay angle, balance
Each phase load of the generator.
The another aspect of the embodiment of the present invention provides a kind of generating set, including any one three-phase function as described above
Consume uneven regulating device and generator.
It preferably, further include the starter being connected with the generator and the three-phase power consumption imbalance regulating device,
The starter is for detecting the tri-phase unbalance factor of the generator, when testing result is greater than preset threshold, institute
It states starter and controls the three-phase power consumption imbalance regulating device unlatching.
The another aspect of the embodiment of the present invention provides a kind of control method of three-phase power consumption imbalance regulating device, comprising:
Controller is instructed according to controller, by the first commutating phase module, the second commutating phase module, the third commutating phase mould
One or two rectification module being connected in block with the lesser phase of generated output power is opened；Rectification in the open state
Module, it is by the commutating circuit where the rectification module that phase current corresponding with the commutating circuit in generator progress is whole
Stream, and export to DC bus；Controller is instructed according to controller, by first phases inversion module, the second phase inversion
One or two inverter module being connected in module, the third phase inverter with the biggish phase of the generated output power
It opens；Inverter module in the open state, will be straight on the DC bus by the inversion circuit where the inverter module
Galvanic electricity stream carries out inversion, and exports the phase being connected into the generator with the inverter module of the unlatching.
Preferably, when the three-phase power consumption imbalance regulating device further includes power harvester, the controller includes place
When managing module, directive generation module and instruction execution module, which comprises power harvester is each to the generator
Phase output power is acquired respectively；Collection result and the generator of the processing module according to the power harvester
General power is exported, the required power compensating value that often balances each other of the generator is calculated；Described instruction generation module is according to each
The power compensating value generates the control instruction；For described instruction execution module according to the control instruction, control first is mutually whole
Flow module, the second commutating phase module, the third phase rectification module, first phases inversion module, second contrary
The angle of flow and the Time delay angle for becoming module and the third phases inversion module, balance each phase load of the generator.
The embodiment of the present invention provides a kind of three-phase power consumption imbalance regulating device and its control method, generating set.This three
Phase power consumption imbalance regulating device is connected by three-phase transmission line with generator, and the three-phase power consumption imbalance regulating device
Including the first commutating phase module, the second commutating phase module, third phase rectification module, the first phases inversion module, the second phase inversion mould
Block, third phases inversion module, DC bus and controller.First commutating phase module, the second commutating phase module and third phase
Rectification module is corresponded with the three-phase of three-phase transmission line respectively.With first in first commutating phase module and three-phase transmission line
The corresponding phase of commutating phase module and the DC bus are connected, to constitute the first commutating phase circuit；Second commutating phase mould
Block phase corresponding with the second commutating phase module with three-phase transmission line and DC bus are connected, to constitute the second commutating phase
Circuit；Third phase rectification module phase corresponding with third phase rectification module with three-phase transmission line and DC bus are connected
It connects, to constitute third phase commutating circuit.In addition, the first phases inversion module, the second phases inversion module and third phases inversion module
It is corresponded respectively with the three-phase of three-phase transmission line.First inverter module in three-phase transmission line with the first inverter module phase
Corresponding phase and DC bus are connected, to constitute the first phase inversion circuit；In second inverter module and three-phase transmission line
Phase corresponding with the second inverter module and DC bus are connected, to constitute the second phase inversion circuit；Third inverter module
It is connected with phase corresponding with third inverter module in three-phase transmission line and the DC bus, it is inverse to constitute third phase
Become road again.Controller respectively with the first commutating phase module, the second commutating phase module, third phase rectification module, the first phase inversion mould
Block, the second phases inversion module and third phases inversion module are connected, and controller is used to be instructed according to controller respectively to first
Commutating phase module, the second commutating phase module, third phase rectification module, the first phases inversion module, the second phases inversion module or third
The opening and closing of phases inversion module is controlled.
In the case, controller can be instructed according to controller, by the first commutating phase module, the second commutating phase module,
One or two rectification module being connected in third phase rectification module with the lesser phase of generated output power is opened, so that
Rectification module in the open state will be connected in generator with the rectification module by the commutating circuit where the rectification module
The phase current connect is rectified, and is exported to DC bus.In addition, controller is instructed according to controller, by the first phase inversion
Module, the second phases inversion module, one or two being connected in third phase inverter with the biggish phase of generated output power
Inverter module is opened, so that inverter module in the open state, it will be above-mentioned by the inversion circuit where the inverter module
DC current on DC bus carries out inversion, and exports the phase being connected into generator with the inverter module.
In conclusion the lesser over commutation circuit that communicates of generated output power is rectified, by a part of electric energy transfer
To DC bus, to improve the output power of the phase.And the electric energy on DC bus is alternating current by inversion circuit inversion
Stream, and export to the load being connected with the biggish phase of generated output power, the output electric current of the phase is reduced, so that
The output power of the phase reduces.So, by above-mentioned three-phase power consumption imbalance regulating device, can generator be exported
The certain negative sense of phase feedback more than the few opposite output power of power compensates power, to reach the mesh of three-phase power balance
's.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the connection schematic diagram of a kind of threephase generator and load that the prior art provides；
Fig. 2 is a kind of generating set connection for being provided with three-phase power consumption imbalance regulating device provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 3 is that a kind of three-phase power consumption imbalance being provided with including power harvester provided in an embodiment of the present invention adjusts dress
The structural schematic diagram for the generating set set；
Fig. 4 is the concrete structure schematic diagram of controller in Fig. 3；
Fig. 5 is the structural schematic diagram of each rectification module and inverter module in Fig. 3；
Fig. 6 is a kind of structural schematic diagram of generating set provided in an embodiment of the present invention；
Fig. 7 is a kind of control method flow chart of three-phase power consumption imbalance regulating device provided in an embodiment of the present invention.
Appended drawing reference:
01- generating set；10- generator；20- three-phase power consumption imbalance regulating device；201- the first commutating phase module；
202- the second commutating phase module；203- third phase rectification module；The first phases inversion module of 211-；The second phases inversion module of 212-；
213- third phases inversion module；221- DC bus；222- controller；2221- processing module；2222- directive generation module；
2223- instruction execution module；230- power harvester；30- starter.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of three-phase power consumption imbalance regulating device 20, as shown in Fig. 2, passing through three-phase transmission & distribution line
Road is connected with generator 10.Wherein, above-mentioned three-phase transmission line refers to, for by the A phase, B phase and C phase of threephase generator
With the various routes for loading and being connected.
In addition, the three-phase power consumption imbalance regulating device 20 includes the first commutating phase module 201, the second commutating phase module
202, third phase rectification module 203, the first phases inversion module 211, the second phases inversion module 212, third phases inversion module 213,
DC bus 221 and controller 222.
Wherein, the first commutating phase module 201, the second commutating phase module 202 and third phase rectification module 203 are respectively with three
The three-phase of phase transmission line corresponds.
Based on this, the first commutating phase module 201 is corresponding with the first commutating phase module 201 with three-phase transmission line
Mutually and DC bus 221 is connected, to constitute the first commutating phase circuit.For example, the first commutating phase module 201 is defeated by three-phase
It is connected with phase corresponding with the first commutating phase module 201 in route with the A phase of generator and N phase.In the case, when
When first commutating phase module 201 is opened, alternating current that generator A phase exports passes through the where the first commutating phase module 201
One commutating phase loop commutation is DC current, and is exported to DC bus 221, so that generator A phase output power increases.
In addition, the second commutating phase module 202 and phase corresponding with the second commutating phase module 202 in three-phase transmission line with
And DC bus 221 is connected, to constitute the second commutating phase circuit.For example, the second commutating phase module 202 passes through three-phase transmission & distribution line
The corresponding phase of the second commutating phase of Lu Zhongyu module 202 is connected with the B phase of generator and N phase.In the case, when the second phase
When rectification module 202 is opened, the alternating current that generator B phase exports is mutually whole by second where the second commutating phase module 202
It flows back to road and is rectified into DC current, and export to DC bus 221, so that generator B phase output power increases.
In addition, the phase corresponding with third phase rectification module 203 with three-phase transmission line of third phase rectification module 203 and
DC bus 221 is connected, to constitute third phase commutating circuit.For example, third phase rectification module 203 passes through three-phase transmission line
In phase corresponding with third phase rectification module 203 be connected with the C phase of generator and N phase.In the case, when third phase is whole
When flow module 203 is opened, the alternating current that generator C phase exports passes through the third commutating phase where third phase rectification module 203
Loop commutation is DC current, and is exported to DC bus 221, so that generator C phase output power increases.
On this basis, the first phases inversion module 211, the second phases inversion module 212, third phases inversion module 213 and three
The three-phase of phase transmission line corresponds.
Specifically, the first inverter module 211 and phase corresponding with the first inverter module 211 in three-phase transmission line and
DC bus 211 is connected, to constitute the first phase inversion circuit.For example, the first inverter module 211 passes through in three-phase transmission line
Phase corresponding with the first inverter module 211 is connected with the A phase of generator and N phase.In the case, when the first inverter module
When 211 unlatching, the DC current on DC bus 211 passes through the first phase inversion circuit inversion where the first inverter module 211
For alternating current, and by the output of above-mentioned first inverter module 211 to the load being connected with the A phase of generator, to reduce
The electric current that the A phase of generator 10 exports, so that the A phase output power of generator 10 reduces.
In addition, the second inverter module 212 is with phase corresponding with the second inverter module 212 in three-phase transmission line and directly
Stream bus 211 is connected, to constitute the second phase inversion circuit.For example, the second inverter module 212 by three-phase transmission line with
The corresponding phase of second inverter module 212 is connected with the B phase of generator and N phase.In the case, when the second inverter module
When 212 unlatching, the DC current on DC bus 211 passes through the second phase inversion circuit inversion where the second inverter module 212
For alternating current, and the load being connected with the B phase of generator is exported by above-mentioned second inverter module 212, to reduce hair
The electric current that the A phase of motor 10 exports, so that the B phase output power of generator 10 reduces.
In addition, third inverter module 213 is with phase corresponding with third inverter module 213 in three-phase transmission line and directly
Stream bus 221 is connected, to constitute third phase inversion circuit.For example, third inverter module 213 by three-phase transmission line with
The corresponding phase of third inverter module 213 is connected with the C phase of generator and N phase.In the case, when third inverter module
When 213 unlatching, the DC current on DC bus 211 passes through the third phase inversion circuit inversion where third inverter module 213
For alternating current, and by the output of above-mentioned third inverter module 213 to the load being connected with the C phase of generator, to reduce
The output electric current of generator C phase, so that the C phase output power of generator 10 reduces.
On this basis, above controller 222 respectively with above-mentioned first commutating phase module 201, the second commutating phase module
202, third phase rectification module 203, the first phases inversion module 211, the second phases inversion module 212 and third phases inversion module
213 are connected.The controller 222 is used to be instructed according to controller respectively to the first commutating phase module 201, the second commutating phase module
202, third phase rectification module 203, the first phases inversion module 212, the second phases inversion module 212 or third phases inversion module 213
Opening and closing controlled.
Wherein, above-mentioned control instruction is related with the tri-phase unbalance factor of engine 10.In the case, controller 222 can
To be instructed according to controller, by the first commutating phase module 201, the second commutating phase module 202, third phase rectification module 203 with
One or two rectification module that the lesser phase of 10 output power of generator is connected is opened, so that in the open state is whole
Flow module, by the commutating circuit where the rectification module by the electric current for the phase being connected in generator 10 with the rectification module
It is rectified, and is exported to DC bus 221.In addition, controller 222 is instructed according to controller, by the first phases inversion module
211, the second phases inversion module 212, be connected in third phase inverter 213 with the biggish phase of 10 output power of generator one
Or two inverter modules are opened, so that inverter module in the open state, passes through the inversion circuit where the inverter module
DC current on above-mentioned DC bus 221 is subjected to inversion, and exports and is connected with the inverter module into generator 10
Phase.So, the lesser over commutation circuit that communicates of 10 output power of generator is rectified, by a part of electric energy transfer to straight
Stream bus 221 is to improve the phase output power.And the electric energy on DC bus 221 is alternating current by inversion circuit inversion
Stream, and export to the load being connected with the biggish phase of 10 output power of generator, the output electric current of the phase is reduced, to make
The output power for obtaining the phase reduces.
In conclusion by above-mentioned three-phase power consumption imbalance regulating device, the phase that generated output power can be made few
The certain negative sense of phase feedback more than output power compensates power, to achieve the purpose that three-phase power balance.
It should be noted that when generator 10 is in island operation state, the gross output P of generatorHair is total=all negative
Carry received general power PIt is negative total。
Wherein, generator 10 exports general power PHair is totalEqual to the sum of the power that 10 three-phase of generator exports respectively, i.e. PHair is total
=PSend out A+PSend out B+PSend out C。
In addition, the general power P of all load-receiptsIt is negative totalThe sum of received power is distinguished equal to 10 threephase load of generator,
That is PIt is negative total=PNegative A+PNegative B+PNegative C。
On this basis, if the power compensating value for setting 10 three-phase of generator is respectively PAX、PBXAnd PCX；Wherein, when upper
Stating power compensating value is timing, is indicated during three-phase power balance, and generator 10 respectively mutually needs to pass through commutating circuit
The power exported；And when above-mentioned power compensating value is negative, it indicates during three-phase power balance, generator 10
The phase load needs to carry out received power by inversion circuit.
When ignoring power loss of the three-phase power consumption imbalance regulating device 20 in rectification and reversals, in order to make
It obtains engine 10 and reaches three-phase equilibrium, need to meet following formula:
PNegative A+PAX=PNegative B+PBX=PNegative C+PCX=PHair is total/3；
PAX=PHair is total/3-PNegative A；
PBX=PHair is total/3-PNegative B；
PCX=PHair is total/3-PNegative C；
In conclusion when knowing above-mentioned PNegative A、PNegative B、PNegative CAnd PHair is totalNumerical values recited and it is positive and negative after, can count
The power compensating value for calculating 10 three-phase of generator is respectively PAX、PBXAnd PCX.And then it is above-mentioned that controller 222 can be made to pass through
PAX、PBXAnd PCXNumerical values recited and positive and negative, control the rectification module being mutually connected corresponding to generator 10 or inversion mould
The angle of flow of block and Time delay angle, mutually to carry out power compensation to each of generator 10.
Therefore to above-mentioned PNegative A、PNegative B、PNegative CAnd PHair is totalNumerical values recited and positive and negative known.Preferably, as schemed
Shown in 3, which further includes mutually being connected with controller 222 and each of above-mentioned generator 10
The power harvester 230 connect.The power harvester 230 can be to each phase output power (P of generator 10Negative A、PNegative B、PNegative C) respectively
It is acquired, and collection result is exported to controller 222.Alternatively, when those skilled in the art can be worth based on practical experience
When obtaining each phase output power of above-mentioned generator 10, the three-phase power consumption imbalance regulating device 20 as shown in Figure 2 can not be wrapped
Include power harvester 230 as shown in Figure 3.
Hereinafter, to controller 222 according to above-mentioned power compensating value PAX、PBXAnd PCXTo rectification module and inverter module into
Row control is specifically illustrated.
For example, A the and B phase load when generator 10 is smaller, and when C phase load is larger, above-mentioned PNegative A、PNegative BNumerical value it is smaller,
PNegative CNumerical value it is larger, therefore calculated above-mentioned PAX、PBXFor positive number, and PCXFor negative.
At this point, controller 222 can open the first commutating phase module 201 being connected with the A phase of generator 10 and with hair
The second commutating phase module 202 that the B phase of motor 10 is connected.Specifically, controller 222 is opening above-mentioned first commutating phase module
201 and when the second commutating phase module 202, the angle of flow and triggering of the first commutating phase module 201 and the second commutating phase module 202
Being delayed angle can be respectively according to PAX、PBXNumerical values recited calculated so that the angle of flow of the first commutating phase module 201 and touching
Hair delay angle and PAXNumerical values recited it is corresponding, and the angle of flow of the second commutating phase module 202 and Time delay angle and PBXNumber
It is corresponding to be worth size.
In the case, the alternating current that generator A phase exports is mutually whole by first where the first commutating phase module 201
It flows back to road and is rectified into DC current, and export to DC bus 221.The alternating current that generator B phase exports passes through the second phase
The second commutating phase loop commutation where rectification module 202 is DC current, and is exported to DC bus 221.At this point, power generation
Machine A phase exports electric current with B phase and increases, to increase generator A phase and B phase output power.
In addition, controller 222 can open the third inverter module 213 that is connected with the C phase of generator 10, specifically, control
For device 222 processed when opening above-mentioned third inverter module 213, the angle of flow of the third inverter module 213 and Time delay angle can be with
Respectively according to PCXNumerical values recited calculated so that the angle of flow of third inverter module 213 and Time delay angle and PCXNumber
It is corresponding to be worth size.
In the case, the DC current on DC bus 211 passes through the third phase inversion where third inverter module 213
Circuit inversion is alternating current, and the load being extremely connected with the C phase of generator by the output of above-mentioned third inverter module 213, from
And the output electric current of generator C phase is reduced, so that the C phase output power of generator 10 reduces.So, by upper
Three-phase power consumption imbalance regulating device 20 is stated, the phase feedback more than opposite output power that 10 output power of generator can be made few
Certain negative sense compensates power, to achieve the purpose that three-phase power balance.
In conjunction with the control process of above controller 222, the specific structure of controller 222 is described in detail.
Specifically, above controller 222 is as shown in figure 4, include processing module 2221, directive generation module 2222 and referring to
Enable execution module 2223.
Wherein, processing module 2221 is connected with power harvester 230, for the acquisition knot according to power harvester 230
Fruit, i.e. each phase output power (P of generator 10Negative A、PNegative B、PNegative C) and generator output general power PHair is total, calculate the generator 10
The power compensating value (P for often balancing each other requiredAX、PBXAnd PCX)。
Above-metioned instruction generation module 2222 is used for according to each power compensating value (PAX、PBXAnd PCX) generate control instruction.
Specifically, the control instruction indicates during three-phase power balance, generator 10 when above-mentioned power compensating value is timing
The alternating current of the phase needs to be rectified by commutating circuit, and exports to DC bus 221.And work as above-mentioned power compensating value
When being negative, which is indicated during three-phase power balance, and the phase load of generator 10 needs to receive by inverse
Become alternating current made of the DC current inversion on routing DC bus 221 again.
In addition, 2223 link order generation module 2222 of instruction execution module, for according to control instruction, controlling above-mentioned the
One commutating phase module 201, the second commutating phase module 202, third phase rectification module 203, the first phases inversion module 211, the second phase
The angle of flow and Time delay angle of inverter module 212 and third phases inversion module 213, each phase power of balancing generator.Its
In, the specific equilibrium process of each phase power is same as above, and details are not described herein again.
The specific structure of above-mentioned rectification module is described in detail below.
Specifically, as shown in figure 5, above-mentioned first commutating phase module 201, the second commutating phase module 202, third commutating phase mould
Any one rectification module in block 203 includes rectifier (AC/DC).The rectifier (AC/DC) and above-mentioned three-phase transmission line
In phase corresponding with rectifier (AC/DC) be connected.For example, the rectifier (AC/DC) in the first commutating phase module 201 is logical
Phase corresponding with rectifier (AC/DC) in three-phase transmission line is crossed to be connected with the A phase of generator and N phase.Second is mutually whole
Rectifier (AC/DC) in flow module 202 passes through phase corresponding with rectifier (AC/DC) and power generation in three-phase transmission line
The B phase of machine is connected with N phase.Rectifier (AC/DC) in third phase rectification module 203 passes through whole with this in three-phase transmission line
The corresponding phase of stream device (AC/DC) is connected with the C phase of generator and N phase.In the case, above controller 202 can root
According to the power compensating value (P for often balancing each other required of generator 10AX、PBXAnd PCX) control rectifier (AC/DC) Time delay
Angle and the angle of flow.
On this basis, due to the Time delay angle of the rectifier 301 of each commutating circuit and angle of flow difference, to lead
DC voltage after causing the rectifier 301 of different commutating circuits to rectify is different, to not can guarantee with different DC voltages
Direct current can be back on DC bus 221.Therefore, to solve the above-mentioned problems, any one above-mentioned rectification module also wraps
The voltage-stablizer (DC/DC) being connected with rectifier (AC/DC) is included, which is connected with DC bus 221.This
Sample one, by voltage-stablizer (DC/DC) can by the rectifier 301 of different commutating circuits rectify after DC voltage it is stable extremely
After one voltage range, then on being back to DC bus 221.
In addition, appointing in above-mentioned first phases inversion module 211, the second phases inversion module 212, third phases inversion module 213
Inverter module of anticipating includes inverter as shown in Figure 5 (DC/AC).The inverter (DC/AC) and DC bus 221 and above-mentioned
Three-phase transmission line is connected.For example, inverter (DC/AC) in the first inverter module 211 by three-phase transmission line with
The corresponding phase of inverter (DC/AC) is connected with the A phase of generator and N phase.Inverter in second inverter module 212
(DC/AC) it is connected by phase corresponding with inverter (DC/AC) in three-phase transmission line with the B phase of generator and N phase.
Inverter (DC/AC) in third inverter module 213 passes through phase corresponding with inverter (DC/AC) in three-phase transmission line
It is connected with the C phase of generator and N phase.In the case, above controller 202 can be according to the institute that often balances each other of generator 10
Power compensating value (the P neededAX、PBXAnd PCX) control inverter (DC/AC) Time delay angle and the angle of flow.
The embodiment of the present invention provides a kind of generating set 01, as shown in fig. 6, including any one three-phase function as described above
It consumes uneven regulating device 20 and is connected by above-mentioned three-phase transmission line with the three-phase power consumption imbalance regulating device 20
Generator 10.With the structure having the same of three-phase power consumption imbalance regulating device 20 that is provided with previous embodiment and beneficial
Effect, since the structure to three-phase power consumption imbalance regulating device 20 and beneficial effect carry out specifically previous embodiment
Bright, details are not described herein again.
On this basis, it is preferred that the generating set 01 further includes adjusting to fill with generator 10 and three-phase power consumption imbalance
20 starters 30 being connected are set, the starter 30 is for detecting the tri-phase unbalance factor of generator 10, when detection is tied
When fruit is greater than preset threshold, the control of starter 30 changes uneven 20 regulating devices of three-phase power consumption and opens.Wherein, above-mentioned preset threshold
Preferred scope be 5%~25%.Wherein, the setting of above-mentioned preset threshold can be according to the three-phase that engine 10 is able to bear not
The ability of balance is set.When the ability for the three-phase imbalance that generator 10 is able to bear is higher, above-mentioned preset threshold can
To be to choose biggish numerical value in 5%~25%, and the ability for the three-phase imbalance that generator 10 is able to bear is lower in range
When, above-mentioned preset threshold can be to choose lesser numerical value in 5%~25% in range.This is not limited by the present invention.
It should be noted that the three-phase imbalance state of generator 10 is to generator when preset threshold is less than above-mentioned 5%
Adverse effect caused by 10 be not it is obvious that if three-phase power consumption imbalance regulating device 20 is in close state at this time, can
To save power consumption.In addition, the three-phase imbalance state of generator 10 makes generator 10 when above-mentioned preset threshold is greater than 25%
At adverse effect it is very big, if at this time just start three-phase power consumption imbalance regulating device 20, generator 10 in order to avoid damage
To carry out stoppage protection.In conclusion the range of preferred above-mentioned preset threshold is 5%~25%.In the case, work as power generation
When the tri-phase unbalance factor of machine 10 is more than above-mentioned preset threshold, control of the three-phase power consumption imbalance regulating device 20 in starter 30
It is lower just to start, and the three phase power of engine 10 is adjusted, so that three phase power reaches balance.It so, can be with
Under the premise of guaranteeing that engine 10 is non-stop-machine, avoid phase power consumption imbalance regulating device 20 constantly in running order, thus
Cause the rising of power consumption.
The embodiment of the present invention provides a kind of control method of three-phase power consumption imbalance regulating device, as shown in fig. 7, comprises:
Controller 222 in S101, Fig. 3 is instructed according to controller, by the first commutating phase module 201, the second commutating phase mould
One or two rectification module being connected in block 202, third phase rectification module 203 with the lesser phase of 10 output power of generator
It opens.
S102, rectification module in the open state, will be in generator 10 by the commutating circuit where the rectification module
Phase current corresponding with the commutating circuit is rectified, and is exported to DC bus 221.
For example, controller 222 can open the first commutating phase module 201 being connected with the A phase of generator 10 and with hair
The second commutating phase module 202 that the B phase of motor 10 is connected.Specifically, controller 222 is opening above-mentioned first commutating phase module
201 and when the second commutating phase module 202, the angle of flow and triggering of the first commutating phase module 201 and the second commutating phase module 202
Being delayed angle can be respectively according to PAX、PBXNumerical values recited calculated so that the angle of flow of the first commutating phase module 201 and touching
Hair delay angle and PAXNumerical values recited it is corresponding, and the angle of flow of the second commutating phase module 202 and Time delay angle and PBXNumber
It is corresponding to be worth size.
In the case, the alternating current that generator A phase exports is mutually whole by first where the first commutating phase module 201
It flows back to road and is rectified into DC current, and export to DC bus 221.The alternating current that generator B phase exports passes through the second phase
The second commutating phase loop commutation where rectification module 202 is DC current, and is exported to DC bus 221.At this point, power generation
Machine A phase exports electric current with B phase and increases, to increase generator A phase and B phase output power.
S103, controller 222 are instructed according to controller, by the first phases inversion module 211, the second phases inversion module 212,
One or two inverter module being connected in three-phase inverter 213 with the biggish phase of 10 output power of generator is opened.
S104, inverter module in the open state, it is by the inversion circuit where the inverter module that the direct current is female
DC current on line 221 carries out inversion, and exports the phase being connected into generator 10 with the inverter module of the unlatching.
For example, controller 222 can open the third inverter module 213 that is connected with the C phase of generator 10, specifically, control
For device 222 processed when opening above-mentioned third inverter module 213, the angle of flow of the third inverter module 213 and Time delay angle can be with
Respectively according to PCXNumerical values recited calculated so that the angle of flow of third inverter module 213 and Time delay angle and PCXNumber
It is corresponding to be worth size.
In the case, the DC current on DC bus 211 passes through the third phase inversion where third inverter module 213
Circuit inversion is alternating current, and the load being extremely connected with the C phase of generator by the output of above-mentioned third inverter module 213, from
And the output electric current of generator C phase is reduced, so that the C phase output power of generator 10 reduces.
So, by above-mentioned three-phase power consumption imbalance regulating device 20,10 output power of generator can be made few
Opposite output power more than the certain negative sense of phase feedback compensate power, to achieve the purpose that three-phase power balance.
On this basis, when three-phase power consumption imbalance regulating device 20 further includes power harvester 230 as shown in Figure 4, control
When device 222 processed includes processing module 2221, directive generation module 2222 and instruction execution module 2223, the above method includes:
Firstly, each phase output power (P of the power harvester 230 to generator 10Negative A、PNegative B、PNegative C) be acquired respectively.
Then, processing module 2221 is according to the collection result of power harvester 230, i.e. each phase output power of generator 10
(PNegative A、PNegative B、PNegative C) and generator output general power PHair is total, calculate the required power compensating value that often balances each other of generator 10
(PAX、PBXAnd PCX)。
Next, directive generation module 2222 is according to each power compensating value PAX、PBXAnd PCX) generate control instruction.
Specifically, the control instruction indicates during three-phase power balance, hair when above-mentioned power compensating value is timing
The alternating current of the phase of motor 10 needs to be rectified by commutating circuit, and exports to DC bus 221.And work as above-mentioned function
When rate offset is negative, which is indicated during three-phase power balance, and the phase load needs of generator 10 connect
It receives and passes through inversion circuit alternating current as made of the DC current inversion on DC bus 221.
Finally, it is mutually whole to control above-mentioned first commutating phase module 201, second according to control instruction for instruction execution module 2223
Flow module 202, third phase rectification module 203, the first phases inversion module 211, the second phases inversion module 212 and third phase inversion
The angle of flow of module 213 and Time delay angle, each phase output power of balancing generator.Wherein, each phase output power is specific
Equilibrium process is same as above, and details are not described herein again.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of three-phase power consumption imbalance regulating device is connected by three-phase transmission line with generator, which is characterized in that institute
Stating three-phase power consumption imbalance regulating device includes the first commutating phase module, the second commutating phase module, third phase rectification module, first
Phases inversion module, the second phases inversion module, third phases inversion module, DC bus and controller；
The first commutating phase module, the second commutating phase module and the third phase rectification module respectively with the three-phase
The three-phase of transmission line corresponds；
The first commutating phase module and phase corresponding with the first commutating phase module in the three-phase transmission line and
The DC bus is connected, to constitute the first commutating phase circuit；The second commutating phase module and the three-phase transmission line
Phase corresponding with the second commutating phase module and the DC bus are connected, to constitute the second commutating phase circuit；Institute
State third phase rectification module and three-phase transmission line phase corresponding with the third phase rectification module and the direct current
Bus is connected, to constitute third phase commutating circuit；
First phases inversion module, second phases inversion module and the third phases inversion module respectively with the three-phase
The three-phase of transmission line corresponds；
First phases inversion module and phase corresponding with first phases inversion module in the three-phase transmission line and
The DC bus is connected, to constitute the first phase inversion circuit；Second phases inversion module and the three-phase transmission line
In phase corresponding with second phases inversion module and the DC bus be connected, to constitute the second phase inversion circuit；
The third phases inversion module and phase corresponding with the third phases inversion module in the three-phase transmission line and described
DC bus is connected, to constitute third phase inversion circuit；
The controller respectively with the first commutating phase module, the second commutating phase module, the third phase rectification module,
First phases inversion module, second phases inversion module and the third phases inversion module are connected, the controller
For being instructed according to controller respectively to the first commutating phase module, the second commutating phase module, the third commutating phase
The opening and closing of module, first phases inversion module, second phases inversion module or the third phases inversion module is controlled.
2. three-phase power consumption imbalance regulating device according to claim 1, which is characterized in that the first commutating phase mould
Any one rectification module in block, the second commutating phase module and the third phase rectification module include rectifier and
The voltage-stablizer being connected with the rectifier；
The rectifier is connected with phase corresponding with the rectifier in the three-phase transmission line, the voltage-stablizer with it is described
DC bus is connected.
3. three-phase power consumption imbalance regulating device according to claim 1, which is characterized in that the first phase inversion mould
Block, the second phases inversion module, any one inverter module in third phases inversion module include inverter.
4. three-phase power consumption imbalance regulating device according to claim 1-3, which is characterized in that further include and institute
The power harvester being respectively mutually connected for stating controller and generator, for each phase output power to the generator point
It is not acquired, and collection result is exported to the controller.
5. three-phase power consumption imbalance regulating device according to claim 4, which is characterized in that the controller includes processing
Module, directive generation module and instruction execution module；
The processing module is connected with the power harvester, for according to the power harvester collection result and institute
Generator output general power is stated, the required power compensating value that often balances each other of the generator is calculated；
Described instruction generation module is used to generate the controller according to each power compensating value and instruct；
Described instruction execution module connects described instruction generation module, and for being instructed according to the controller, control first is mutually whole
Flow module, the second commutating phase module, the third phase rectification module, first phases inversion module, second contrary
The angle of flow and the Time delay angle for becoming module and the third phases inversion module, balance each phase power of the generator.
6. a kind of generating set, which is characterized in that adjust dress including the three-phase power consumption imbalance as described in claim any one of 1-5
It sets and generator.
7. generating set according to claim 6, which is characterized in that further include and the generator and the three-phase power consumption
The starter that uneven regulating device is connected, the starter is for examining the tri-phase unbalance factor of the generator
It surveys, when testing result is greater than preset threshold, the starter controls the three-phase power consumption imbalance regulating device and opens.
8. a kind of control method of three-phase power consumption imbalance regulating device as described in any one in claim 1-5, feature exist
In, comprising:
Controller is instructed according to controller, by the first commutating phase module, the second commutating phase module, third phase rectification module with hair
One or two rectification module that the lesser phase of output power of motor is connected is opened；
Rectification module in the open state, by the commutating circuit where the rectification module by generator with the commutating circuit
Corresponding phase current is rectified, and is exported to DC bus；
Controller is instructed according to controller, by the first phases inversion module, the second phases inversion module, third phase inverter with it is described
One or two inverter module that the biggish phase of generated output power is connected is opened；
Inverter module in the open state, by the inversion circuit where the inverter module by the direct current on the DC bus
Electric current carries out inversion, and exports the phase being connected into the generator with the inverter module of the unlatching.
9. the control method of three-phase power consumption imbalance regulating device according to claim 8, which is characterized in that when described three
Phase power consumption imbalance regulating device further includes power harvester, the controller include processing module, directive generation module and
When instruction execution module, which comprises
Power harvester is acquired each phase output power of the generator respectively；
The processing module exports general power according to the collection result of the power harvester and the generator, described in calculating
The required power compensating value that often balances each other of generator；
Described instruction generation module generates the controller according to each power compensating value and instructs；
Described instruction execution module is instructed according to the controller, control the first commutating phase module, the second commutating phase module,
The third phase rectification module, first phases inversion module, second phases inversion module and the third phase inversion mould
The angle of flow of block and Time delay angle balance each phase power of the generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217529.4A CN106532748B (en) | 2016-12-23 | 2016-12-23 | A kind of three-phase power consumption imbalance regulating device and its control method, generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217529.4A CN106532748B (en) | 2016-12-23 | 2016-12-23 | A kind of three-phase power consumption imbalance regulating device and its control method, generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106532748A CN106532748A (en) | 2017-03-22 |
| CN106532748B true CN106532748B (en) | 2019-01-29 |
Family
ID=58337852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611217529.4A Active CN106532748B (en) | 2016-12-23 | 2016-12-23 | A kind of three-phase power consumption imbalance regulating device and its control method, generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106532748B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11682904B2 (en) * | 2021-09-24 | 2023-06-20 | Cisco Technology, Inc. | Three-phase AC load unbalance detection and balancing method and circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354985A (en) * | 2011-10-13 | 2012-02-15 | 江苏省电力公司扬州供电公司 | Real-time dynamic guarantee device for voltage stability of low-voltage power grid |
| CN204012737U (en) * | 2014-08-14 | 2014-12-10 | 福建奥托节能科技有限公司 | The unbalanced control device of a kind of automatic eliminating transformer threephase load |
| CN204103498U (en) * | 2014-06-17 | 2015-01-14 | 国家电网公司 | A kind of modularization shore electric power device |
| CN204615400U (en) * | 2015-05-28 | 2015-09-02 | 株洲变流技术国家工程研究中心有限公司 | There is the Power Quality Comprehensive Treatment Device of short-circuit current-limiting function |
| CN105633985A (en) * | 2015-12-25 | 2016-06-01 | 国家电网公司 | Intelligent balance adjusting method for three-phase load unbalance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004208345A (en) * | 2002-12-24 | 2004-07-22 | Sansha Electric Mfg Co Ltd | Three-phase unbalanced voltage restraining apparatus |
-
2016
- 2016-12-23 CN CN201611217529.4A patent/CN106532748B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354985A (en) * | 2011-10-13 | 2012-02-15 | 江苏省电力公司扬州供电公司 | Real-time dynamic guarantee device for voltage stability of low-voltage power grid |
| CN204103498U (en) * | 2014-06-17 | 2015-01-14 | 国家电网公司 | A kind of modularization shore electric power device |
| CN204012737U (en) * | 2014-08-14 | 2014-12-10 | 福建奥托节能科技有限公司 | The unbalanced control device of a kind of automatic eliminating transformer threephase load |
| CN204615400U (en) * | 2015-05-28 | 2015-09-02 | 株洲变流技术国家工程研究中心有限公司 | There is the Power Quality Comprehensive Treatment Device of short-circuit current-limiting function |
| CN105633985A (en) * | 2015-12-25 | 2016-06-01 | 国家电网公司 | Intelligent balance adjusting method for three-phase load unbalance |
Non-Patent Citations (1)
| Title |
|---|
| 三相模块级联型固态变压器均压/均功率控制策略研究;吴剑等;《电源学报》;20150331;第13卷(第2期);第17-26、32页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106532748A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wu et al. | DC-bus voltage control with a three-phase bidirectional inverter for DC distribution systems | |
| CN102222937B (en) | Photovoltaic grid-connected inverter and grid-connected control method thereof | |
| CN108448607B (en) | Grid-connected and off-grid switching method and device for micro-grid battery energy storage system | |
| RU2010129855A (en) | SYSTEMS AND METHODS OF MANAGING THE WORK OF IPB | |
| US20130119769A1 (en) | Energy Systems And Energy Storage System Charging Methods | |
| EP3063854A1 (en) | Power supply control | |
| CN109742807A (en) | Light stores up electricity generation system and its Process Control System and starting method | |
| JPWO2011052314A1 (en) | Secondary battery control method and power storage device | |
| Vandoorn et al. | Power balancing in islanded microgrids by using a dc-bus voltage reference | |
| US20240079969A1 (en) | Inverter system | |
| CN110544938A (en) | Low-voltage microgrid grid-connected and off-grid control method containing battery and super capacitor | |
| Bašić et al. | Energy efficient control of a stand-alone wind energy conversion system with AC current harmonics compensation | |
| Verma et al. | Cascaded multilevel active rectifier fed three-phase smart pump load on single-phase rural feeder | |
| CN106532748B (en) | A kind of three-phase power consumption imbalance regulating device and its control method, generating set | |
| Singh et al. | Battery based voltage and frequency controller for parallel operated isolated asynchronous generators | |
| Barrado et al. | Standalone self-excited induction generator with a three-phase four-wire active filter and energy storage system | |
| CN107681687B (en) | Energy storage-based bus overvoltage suppression control method and system for distributed system | |
| CN107546768B (en) | A kind of fan converter control method and control device | |
| Bubalo et al. | Optimized isolated operation of a WECS-powered microgrid with a battery-assisted qZSI | |
| CN209462035U (en) | Bidirectional energy-storage Variable flow control device | |
| CN106899033A (en) | The electricity generation system and its control method of many converter wind turbines | |
| JP2011139594A (en) | System interconnection system | |
| US7233081B2 (en) | Power-supply device | |
| CN201877830U (en) | Intelligent voltage-regulating power-saving device | |
| RU112554U1 (en) | DEVICE FOR CONTROL OF ASYNCHRONOUS AC ELECTRIC DRIVE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190710 Address after: 101299 Room 118, 1st Floor, Building 2, No. 26, Paradise Garden West District, Pinggu District, Beijing Patentee after: Beijing Xinao Gas Development Co., Ltd. Address before: 100000 C block 501-2, office building, 26 Olympic Centre, Jinshi Fang street, Xicheng District, Beijing. Patentee before: New Austrian (China) Gas Investment Co., Ltd. |