CN107623329A - A kind of Intelligent power quality apparatus for correcting and antidote - Google Patents
A kind of Intelligent power quality apparatus for correcting and antidote Download PDFInfo
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Abstract
The invention discloses a kind of Intelligent power quality apparatus for correcting and antidote, mainly solves the problems, such as after compensating current hysteresis in quality of power supply correcting process, wherein, apparatus for correcting includes detection unit, control unit and inversion unit, and control unit includes：Computing module, for generating simultaneously output current offset；Curve generation module is prejudged, current curve is prejudged for generating；Memory module, for storing the current fluctuation curve in power distribution network under every nonequilibrium condition, and current offset values；Comparing module, output compare signal；Gating module, current offset values in computing module or memory module are gated to inversion unit, by setting intelligentized control unit, the offset of electric current can be made and estimate in advance, it is adapted to the hysteresis quality of time, so that the current offset values of control unit output are more beneficial for the balance of three-phase current, the rectification effect of the quality of power supply is improved.
Description
Technical field
The present invention relates to hot-beverage maker technical field, more specifically, it relates to which a kind of Intelligent power quality is corrected
Device and antidote.
Background technology
Quality of power supply apparatus for correcting（NADSPC) it is mainly used in low-voltage distribution user side, administers three-phase current unbalance, phase
Low voltage and compensating reactive power, optimize the quality of power supply.Its cardinal principle can be summarized as follows：After NADSPC is opened, pass through external electricity
Current transformer（CT）Real-time detecting system electric current, and system power information is sent to internal controller and carries out Treatment Analysis, with
Judge whether system is in non-equilibrium state, while calculate the current value of conversion needed for each phase when reaching poised state, then
Send a signal to internal IGBT and drive its action, by out-of-balance current from electric current it is big be mutually transferred to the small phase of electric current, most
After reach three-phase equilibrium state.
Said process can be reduced to：Collection-processing-compensation, in practice, it has been found that because above-mentioned each processing procedure all needs
Take some time, after internal controller output control signal, its size of current shifted actually can not be complete
Meet the needs of three-phase equilibrium instantly, above-mentioned three-phase equilibrium is actually the dynamic equilibrium constantly fluctuated, and above-mentioned mistake
Difference can maintain in a specific scope all the time, and the size of the scope is equal to the time and curent change for detecting that compensation is completed
Speed product.Obviously, the time of detection-compensation is more long, and the speed of curent change is faster, and its error range compensated is got over
Greatly.This just needs a kind of new intelligentized quality of power supply apparatus for correcting.
The content of the invention
There is hysteresis quality for quality of power supply correction in practice, three-phase current is still deposited within the specific limits after correction
In this problem of energy imbalance, the object of the invention one is to propose a kind of Intelligent power quality apparatus for correcting, and concrete scheme is such as
Under：
A kind of Intelligent power quality apparatus for correcting, including detection unit connected and that mutually signal is connected with power distribution network, control list
Member and inversion unit；Described control unit includes：
Computing module, it is connected with the detection unit and inversion unit signal, is built-in with compensation current size computational algorithm,
The current value of the power distribution network is received, generates simultaneously output current offset；
Curve generation module is prejudged, is connected with the detection unit signal, the electric current that collection current time detection unit detects
Value, and, generation anticipation current curve combined with current value that preceding some receptions arrive；
Memory module, for storing the current fluctuation curve in power distribution network under every nonequilibrium condition, and corresponding to above-mentioned electricity
Flow the current offset values that the subsequent time needed for the curve of cyclical fluctuations makes three-phase current reach balance；
Comparing module, with the memory module and anticipation curve generation module data be connected, receive it is described prejudge current curve and
Current fluctuation curve simultaneously compares, and output compares signal；
Gating module, including the gating part one being connected with the comparing module signal and gating part two, the gating part one are set
Between the detection unit and computing module or computing module and inversion unit, the gating part two is arranged at the storage
Between module and inversion unit；
Wherein, if it is described anticipation current curve and current fluctuation curve comparison success, gating part two turn on the memory module with
Inversion unit, current offset values in the memory module are exported to the inversion unit；If the anticipation current curve and electricity
Flow the curve of cyclical fluctuations and compare failure, gating part one turns on the detection unit and computing module or the computing module and inversion list
Member, current offset values in the computing module are exported to the inversion unit.
Pass through above-mentioned technical proposal, the current signal that detection unit collects do not carry out directly that current compensation is calculated
Value, but by above-mentioned current signal by the anticipation current curve of processing generation one, and by itself and the electric current that is stored in memory module
The curve of cyclical fluctuations matches, if above-mentioned, it fails to match, still as needed for computing module calculates moment current three-phase balance instantly
Current offset values and output this to inversion unit, it is more relative to the process of traditional calculating plus control, its lag time
The time that anticipation current curve is spent with current fluctuation curve comparison；, can be directly by the current fluctuation if the match is successful
Current offset values needed for current offset values corresponding to curve, i.e. subsequent time power distribution network current three-phase balance are exported to inversion list
Member, the electric current of power distribution network is shifted and/or compensated by the work of inversion unit, it is possible thereby to so that what control unit exported
Current offset values are not in temporal hysteresis quality, and the current fluctuation with subsequent time power distribution network is adapted.
Further, the anticipation curve generation module includes：
Clock signal module, it is synchronous with the clock signal of system of control unit to set, for exporting clock signal；
Storage queue, in response to the clock signal, for receiving and being stored in the current value at current time；
Curve follower, it is connected with the storage queue data, in response to the clock signal, when duplication parallel series output is current
The stacked data at quarter, generate the anticipation current curve.
Pass through above-mentioned technical proposal, by the way of queue storage, rapidly the current value of collection input can be carried out
Storage, and due to the data character of storage queue FIFO, directly each current value point position by being stored in storage queue
Above-mentioned anticipation current curve can be obtained, convenient and swift, committed memory is few.Anticipation current curve is can be seen that from above-mentioned setting
The digit of middle data, i.e., " length " of above-mentioned curve are also determined by above-mentioned storage queue.
Further, the inversion unit includes multiple inverter bridges, the inverter bridge and the computing module, memory module
Between be provided with signal adapter for the current offset values to be converted into inverter bridge control signal.
Pass through above-mentioned technical proposal, can be converted into the current offset values that memory module or computing module export can be straight
The control signal of control inversion unit work is connect, it is convenient and easy.
Further, the computing module is connected with the memory module data and gating part three is provided therebetween,
The gating part three is connected with the comparing module signal, if the anticipation current curve and the failure of current fluctuation curve comparison,
Gating part three turns on the computing module and the memory module, and computing module exports current time current fluctuation curve and correspondingly
Current offset values to memory module and stored.
Pass through above-mentioned technical proposal, after the anticipation current curve and the failure of current fluctuation curve comparison, then explanation is worked as
The current fluctuation curve occurred in preceding moment power distribution network（That is, the anticipation current curve being currently generated）Do not occur before, this
When, computing module calculates the current compensation for being used to reach current three-phase balance needed for the current fluctuation curve subsequent time
Value, and stored, then when occurring above-mentioned current fluctuation curve again next time, then can not be computed rapidly
To and export its corresponding current offset values, reduce the temporal hysteresis quality of current compensation.
Further, the memory module includes multiple storage regions and the data/address bus being attached thereto, wherein, also wrap
Include：
Priority assignment module, for distributing access privileges for every current fluctuation curve；
Counting module, it is connected with the comparing module and priority assignment module data, when current fluctuation curve and anticipation electric current
During Curve Matching, access privileges corresponding to the current fluctuation curve adds one；
Sequencing unit, it is connected with the priority assignment module data, current offset values corresponding to the current fluctuation curve are adjusted
Access privileges the time required to taking with the current fluctuation curve is set in inverse correlation.
Pass through above-mentioned technical proposal, the match is successful the most current fluctuation curve of number, its access privileges highest, subsequently
In the course of work, anticipation current curve preferentially will carry out matching with it and compare, it is possible thereby to reduced on probability comparing module from
Current fluctuation curve is called to be compared and up to comparing the successfully required time in memory module, meanwhile, the current fluctuation is bent
Current offset values corresponding to line, its time called is also configured as most short, conveniently transfers.
Based on above-mentioned Intelligent power quality apparatus for correcting, technical solution of the present invention also proposed a kind of Intelligent power quality and rectify
Correction method, comprise the following steps：
S1, detection unit is couple in power distribution network, the current signal of detection collection power distribution network；
S2, anticipation curve generation module receives the current signal, and reception prejudges to current signal, generation before combination
Current curve；
Computing module receives the current signal, generates current offset values；
S3, comparing module receives the anticipation current curve, and it is made into ratio with the current fluctuation curve stored in memory module
It is right；
S4, if anticipation current curve and the success of current fluctuation curve comparison, gate memory module and inversion unit, will store
Correspond to the compensation current this moment needed for the three-phase balance of current fluctuation curve in module to export to inversion unit；
S5, if anticipation current curve fails with current fluctuation curve comparison, computing module and inversion unit are gated, will be calculated
Module calculate based on current signal this moment, the compensation current needed for three-phase balance is exported to inversion unit；
The anticipation current curve for prejudging the generation of curve generation module this moment and its corresponding compensation current are stored to storage mould
In block；
S6, the compensation current in step S4 or S5 is converted into the control signal of inversion unit, control inversion unit work, control
The current three-phase balance of power distribution network processed.
Further, the step S4 also includes：
If prejudging current curve and the success of current fluctuation curve comparison, access privileges corresponding to the current fluctuation curve adds
One, and the allocating time of the current offset values of subsequent time corresponding to the current fluctuation curve is in anti-with above-mentioned access privileges
Correlation is set.
Further, the antidote also includes test input step：
When power supply and after load and loaded work piece, every current fluctuation curve in detection collection power distribution network is simultaneously stored to depositing
Store up in module；
Calculate needed for above-mentioned current fluctuation curve subsequent time, current three-phase compensated to the compensation current of poised state,
And stored into memory module；
The corresponding compensation current of the current fluctuation curve is stored by the way of associated storage.
Compared with prior art, beneficial effects of the present invention are as follows：
（1）By setting intelligentized control unit, the offset of electric current can be made and estimate in advance, be adapted to the stagnant of time
Property afterwards so that the current offset values of control unit output are more beneficial for the balance of three-phase current；
（2）By setting the performance graph of three-phase current nonequilibrium condition, work as in real time according to the above-mentioned performance graph monitoring to prestore
Under three-phase current situation of change, prejudge out the change of three-phase current next stage exactly with this, reach and turn accurately and in time
Move and compensate the purpose of electric current；
（3）Compensation is tracked by the load to change and current fluctuation curve so that compensation characteristic is not by electric network impedance
And the influence of other factorses, stable and adaptability are good.
Brief description of the drawings
Fig. 1 is the general frame schematic diagram of the embodiment of the present invention one；
Fig. 2 is the anticipation curve generation module schematic diagram of the present invention
Fig. 3 is the general frame schematic diagram of the embodiment of the present invention two；
Fig. 4 is antidote schematic flow sheet of the present invention.
Reference：1st, power distribution network；2nd, detection unit；3rd, inversion unit；4th, control unit；40th, computing module；41st, it is pre-
Sentence curve generation module；42nd, memory module；43rd, comparing module；44th, part one is gated；45th, part two is gated；46th, part three is gated；
410th, clock signal module；411st, storage queue；412nd, curve follower.
Embodiment
, it is necessary to be adjusted to the difference between three-phase current during the utility power quality control of power distribution network 1, to reach
The balance of current three-phase.Because the capacitance-resistance characteristic in each 1 distinctive structure of power distribution network and residing distribution environment are different, make
The fluctuation situation for obtaining three-phase current on each power distribution network 1 also differs.Thus fixed current offset values can not be used to three-phase
Electric current carries out transfer compensation.And calculate compensate in real time, have and regular hour hysteresis quality be present, cause larger compensation to miss
Difference.Technical solution of the present invention, it is to propose a kind of to overcome above-mentioned insufficient intelligentized quality of power supply apparatus for correcting.
With reference to embodiment and figure, the present invention is described in further detail, but embodiments of the present invention not only limit
In this.
Embodiment one
As shown in figure 1, a kind of Intelligent power quality apparatus for correcting, main to include what is be connected with the connected and mutual signal of power distribution network 1
Detection unit 2, control unit 4 and inversion unit 3.
Detection unit 2 mainly includes the current-voltage transformer being arranged in power distribution network 1, for detecting and gathering power distribution network
Current signal in 1, above-mentioned current signal actually pass through sampling filter after acquisition, and what is obtained is a string of discrete numeral letters
Number.Inversion unit 3 is same as the prior art, is mainly made up of IGBT elements, for three-phase current to be adjusted.
In technical solution of the present invention, control unit 4 is based on control chip and/or digital signal processing chip on hardware
And storage chip, mainly include：Computing module 40, anticipation curve generation module 41, memory module 42, comparing module 43 and
Gating module.
Wherein, the computing module 40 is connected with detection unit 2 and the signal of inversion unit 3, is built-in with compensation current
Size computational algorithm, the current value of power distribution network 1 is received, generate simultaneously output current offset.Above-mentioned algorithm is due to applicable distribution
Net 1 is simultaneously differed, therefore algorithm is also not quite similar in itself, and above-mentioned algorithm is built in digital signal processing chip, and electric current is believed
Number handled, according to setting rule generation compensation current.
Anticipation curve generation module 41 is connected with the signal of detection unit 2, the electricity that collection current time detection unit 2 detects
Flow valuve, and, generation anticipation current curve combined with current value that preceding some receptions arrive.It is described in detail, as shown in Fig. 2 in advance
Sentencing curve generation module 41 includes：The clock signal module 410 synchronously set with the clock signal of system of control unit 4, is used for
Export clock signal；In response to clock signal, the storage queue 411 of the current value for receiving and being stored in current time；With depositing
The connection of the data of queue 411 is stored up, in response to clock signal, the stacked data at parallel series output current time is replicated, generates anticipation electricity
The curve follower 412 of flow curve.By the way of queue storage, rapidly the current value of collection input can be deposited
Storage, and due to the data character of the FIFO of storage queue 411, directly each current value by being stored in storage queue 411
Point position can obtain above-mentioned anticipation current curve, and convenient and swift, committed memory is few.Anticipation electric current is can be seen that from above-mentioned setting
The digit of data in curve, i.e., " length " of above-mentioned curve are also determined by above-mentioned storage queue 411.
Memory module 42 include control chip/digital signal processing chip built in storage region, or with control chip/number
The external chip of word signal processing chip data connection, it is mainly used in storing the electric current in power distribution network 1 under every nonequilibrium condition
The curve of cyclical fluctuations, and three-phase current is reached the current compensation of balance corresponding to the subsequent time needed for above-mentioned current fluctuation curve
Value.
Because the data bits for prejudging current curve has been fixed（Determined by the data bits of storage queue 411）, therefore,
The digit of current fluctuation curve also determines accordingly, and in the present invention program, the data bits of above-mentioned current fluctuation curve is not small
In the data bits of above-mentioned anticipation current curve, it is preferred that the data bits of above-mentioned current fluctuation curve is than anticipation current curve
The more setting values of data bits, above-mentioned setting value is the sampling resolution of current signal in system clock cycle.Above-mentioned setting
Following effect can be reached：Current fluctuation curve in memory module 42, if anticipation current curve matches with it,
The data that anticipation current curve subsequent time can predictably be obtained are the number in next data bit of current fluctuation curve
According to value.
Comparing module 43 and memory module 42 and the data of anticipation curve generation module 41 be connecteds, receive prejudge current curve and
Current fluctuation curve simultaneously compares, and according to the result of comparison, output compares signal.Specifically, above-mentioned comparison signal has two kinds,
Respectively compare successfully and compare failure signal.
Gating module includes the gating part 1 being connected with the signal of comparing module 43 and gating part 2 45（Practical application is worked as
In, the gating between above-mentioned data is realized by program module, and the present invention is makes explanation more specificization, using hardware name side
Formula is named it）, gate part 1 and be arranged at detection unit 2 and computing module 40 or computing module 40 and inversion unit 3
Between.When selecting parts 1 to be arranged between the detection unit 2 and computing module 40, now only when anticipation current curve
And after current fluctuation Curve Matching compares failure, current signal can be entered in computing module 40 and handled, and this will
A preposition data latches in computing module 40 are sought, for latching current signal to be calculated（If needed for comparing module 43
Comparison time less than the detection collection of current signal cycle, due to reception arrives before and after computing module 40 current value all
It is the same, then can not uses latch）, when selecting parts 1 to be arranged between computing module 40 and inversion unit 3, then
Computing module 40 simultaneously and concurrently operates with comparing module 43, and computing module 40 first calculates current offset values with regard to current signal, if
Prejudge current curve and current fluctuation Curve Matching is compared after failing, then the current offset values that directly will can be calculated
Output, saves the time.
Gating part 2 45 is arranged between memory module 42 and inversion unit 3, if anticipation current curve and current fluctuation are bent
Lines matching compares successfully, then directly can input the current offset values in memory module 42 into inversion unit 3.
Inversion list can be directly controlled in order to which the current offset values for exporting memory module 42 or computing module 40 are converted into
The control signal of the work of member 3, inversion unit 3 include multiple inverter bridges, set between inverter bridge and computing module 40, memory module 42
It is equipped with the signal adapter for current offset values to be converted into inverter bridge control signal.
Optimization, computing module 40 is connected with the data of memory module 42 and gating part 3 46, gating is provided therebetween
Part 3 46 is connected with the signal of comparing module 43, if anticipation current curve and the failure of current fluctuation curve comparison, gating part 3 46 are led
Logical computing module 40 and memory module 42, computing module 40 export current time current fluctuation curve and corresponding current offset values
To memory module 42 and stored.After current curve and the failure of current fluctuation curve comparison is prejudged, then illustrate current time
The current fluctuation curve occurred in power distribution network 1（That is, the anticipation current curve being currently generated）Do not occur before, now, meter
Calculation module 40 calculates the current offset values for being used to reach current three-phase balance needed for the current fluctuation curve subsequent time, and
Stored, then when occurring above-mentioned current fluctuation curve again next time, then what can be computed rapidly obtains simultaneously
Its corresponding current offset values is exported, reduces the temporal hysteresis quality of current compensation.
Memory module 42 includes multiple storage regions and the data/address bus being attached thereto.
Embodiment two
As shown in figure 3, a kind of Intelligent power quality apparatus for correcting, is with the difference of embodiment one：Memory module 42 is removed
Outside including multiple storage regions and the data/address bus being attached thereto, in addition to：Priority assignment module, counting module and row
Sequence unit.
Priority assignment module is used to distribute access privileges for every current fluctuation curve；Counting module and comparing module
43 and priority assignment module data connection, when current fluctuation curve with prejudge current curve match when, current fluctuation curve pair
The access privileges answered adds one；Sequencing unit is connected with priority assignment module data, and electric current corresponding to current fluctuation curve is mended
The access privileges the time required to value is transferred with the current fluctuation curve is repaid to set in inverse correlation.Above-mentioned technical proposal, is matched into
The most current fluctuation curve of work(number, its access privileges highest, during follow-up work, anticipation current curve will preferentially with
It carries out matching comparison, calls current fluctuation curve to enter from memory module 42 it is possible thereby to reduce comparing module 43 on probability
Row compares and until compares the successfully required time, meanwhile, current offset values corresponding to the current fluctuation curve, its calling when
Between be also configured as most short, conveniently transfer.
Based on above-mentioned Intelligent power quality apparatus for correcting, technical solution of the present invention also proposed a kind of Intelligent power quality and rectify
Correction method, as shown in figure 4, comprising the following steps：
S1, detection unit 2 is couple in power distribution network 1, the current signal of detection collection power distribution network 1；
S2, anticipation curve generation module 41 receives current signal, and reception prejudges electricity to current signal, generation before combination
Flow curve；
Computing module 40 receives current signal, generates current offset values；
S3, comparing module 43 receives anticipation current curve, and it is made into ratio with the current fluctuation curve stored in memory module 42
It is right；
S4, will if anticipation current curve and the success of current fluctuation curve comparison, gate memory module 42 and inversion unit 3
Correspond to the compensation current this moment needed for the three-phase balance of current fluctuation curve in memory module 42 to export to inversion list
Member 3；
S5, if anticipation current curve fails with current fluctuation curve comparison, computing module 40 and inversion unit 3 are gated, will
Computing module 40 calculate based on current signal this moment, the compensation current needed for three-phase balance is exported to inversion unit
3；
Anticipation curve generation module 41 generates this moment anticipation current curve and its corresponding compensation current are stored to storage
In module 42；
S6, the compensation current in step S4 or S5 being converted into the control signal of inversion unit 3, control inversion unit 3 works,
Control the current three-phase balance of power distribution network 1.
Wherein, step S4 also includes：
If prejudging current curve and the success of current fluctuation curve comparison, access privileges corresponding to the current fluctuation curve adds
One, and the allocating time of the current offset values of subsequent time corresponding to the current fluctuation curve is in anti-with above-mentioned access privileges
Correlation is set.
In order to facilitate the control of original state, antidote also includes test input step：
S01, after power supply and load and loaded work piece, detection gathers every current fluctuation curve in power distribution network 1 and deposited
Storage is into memory module 42；
S02, calculate needed for above-mentioned current fluctuation curve subsequent time, current three-phase is compensated to the compensation electric current of poised state
Value, and stored into memory module 42；
The corresponding compensation current of current fluctuation curve is stored by the way of associated storage.
The overall work principle and invention thinking of technical solution of the present invention are as follows：
Detection unit 2, it is main to include being arranged in parallel the current transducer in power distribution network 1, for gathering the electric current in power distribution network 1
Signal.The current signal collected, export to computing module 40 calculated while, input to anticipation curve generation module 41
The middle corresponding anticipation current curve of generation, above-mentioned anticipation current curve is compared with the current fluctuation curve stored in memory module 42
It is right, if it is compared successfully, export the anticipation current curve（That is, above-mentioned current fluctuation curve）The electricity of corresponding subsequent time
Offset is flowed to inversion unit 3.Above-described subsequent time, refer to since being collected current signal, through comparison processing again
Compensated to inversion unit 3 to the time needed for power distribution network 1, and above-mentioned current offset values are obtained and stored in calculated in advance
In memory module 42.Pass through above-mentioned process control, it can be seen that the current offset values that control unit 4 exports are actually
Through take into account the hysteresis quality of electric current, thus inversion unit 3 work after compensation to power distribution network 1, just with current time electric current
Compensation electric current needed under curve of cyclical fluctuations state is consistent, so that the current three-phase of power distribution network 1 more balances, reduces compensation
Error.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of Intelligent power quality apparatus for correcting, including detection unit connected and that mutually signal is connected with power distribution network (1)
(2), control unit (4) and inversion unit (3), it is characterised in that described control unit (4) includes：
Computing module (40), it is connected with the detection unit (2) and inversion unit (3) signal, it is big is built-in with compensation current
Small computational algorithm, the current value of the power distribution network (1) is received, generate simultaneously output current offset；
Curve generation module (41) is prejudged, is connected with the detection unit (2) signal, collection current time detection unit (2) inspection
The current value measured, and, generation anticipation current curve combined with current value that preceding some receptions arrive；
Memory module (42), for storing the current fluctuation curve in power distribution network (1) under every nonequilibrium condition, and correspond to
Subsequent time needed for above-mentioned current fluctuation curve makes three-phase current reach the current offset values of balance；
Comparing module (43), it is connected, receives described pre- with the memory module (42) and anticipation curve generation module (41) data
Sentence current curve and current fluctuation curve and compare, output compares signal；
Gating module, including the gating part one (44) being connected with the comparing module (43) signal and gating part two (45), it is described
Gating part one (44) be arranged at the detection unit (2) and computing module (40) or computing module (40) and inversion unit (3) it
Between, the gating part two (45) is arranged between the memory module (42) and inversion unit (3)；
Wherein, if the anticipation current curve and the success of current fluctuation curve comparison, gating part two (45) turn on the storage mould
Block (42) and inversion unit (3), current offset values in the memory module (42) are exported to the inversion unit (3)；If institute
Anticipation current curve and the failure of current fluctuation curve comparison are stated, gating part one (44) turns on the detection unit (2) with calculating mould
Block (40) or the computing module (40) and inversion unit (3), current offset values in the computing module (40) are exported to institute
State inversion unit (3).
2. apparatus for correcting according to claim 1, it is characterised in that the anticipation curve generation module (41) includes：
Clock signal module (410), it is synchronous with the clock signal of system of control unit (4) to set, for exporting clock signal；
Storage queue (411), in response to the clock signal, for receiving and being stored in the current value at current time；
Curve follower (412), it is connected with the storage queue (411) data, in response to the clock signal, replicates parallel series
The stacked data at current time is exported, generates the anticipation current curve.
3. apparatus for correcting according to claim 1, it is characterised in that the inversion unit (3) includes multiple inverter bridges, institute
State be provided between inverter bridge and the computing module (40), memory module (42) for the current offset values are converted into it is inverse
Become the signal adapter of bridge control signal.
4. apparatus for correcting according to claim 1, it is characterised in that the computing module (40) and the memory module
(42) data are connected and gating part three (46) are provided therebetween, and the gating part three (46) is believed with the comparing module (43)
Number connection, if the anticipation current curve and the failure of current fluctuation curve comparison, gating part three (46) turn on the computing module
(40) current time current fluctuation curve and corresponding current offset values are exported with the memory module (42), computing module (40)
To memory module (42) and stored.
5. apparatus for correcting according to claim 1, it is characterised in that the memory module (42) includes multiple storage regions
And the data/address bus being attached thereto, wherein, in addition to：
Priority assignment module, for distributing access privileges for every current fluctuation curve；
Counting module, it is connected with the comparing module (43) and priority assignment module data, when current fluctuation curve and anticipation
When current curve matches, access privileges corresponding to the current fluctuation curve adds one；
Sequencing unit, it is connected with the priority assignment module data, current offset values corresponding to the current fluctuation curve are adjusted
Access privileges the time required to taking with the current fluctuation curve is set in inverse correlation.
6. a kind of Intelligent power quality antidote, it is characterised in that comprise the following steps：
S1, detection unit (2) is couple in power distribution network (1), the current signal of detection collection power distribution network (1)；
S2, anticipation curve generation module (41) receives the current signal, and reception to current signal, generates before combination
Prejudge current curve；
Computing module (40) receives the current signal, generates current offset values；
S3, comparing module (43) the reception anticipation current curve, and the current fluctuation that will be stored in itself and memory module (42)
Curve compares；
S4, if anticipation current curve and the success of current fluctuation curve comparison, gating memory module (42) and inversion unit
(3), the compensation current corresponded in memory module (42) needed for the three-phase balance of current fluctuation curve this moment is exported
To inversion unit (3)；
S5, if anticipation current curve fails with current fluctuation curve comparison, gating computing module (40) and inversion unit
(3), by computing module (40) calculate based on current signal this moment, the compensation current needed for three-phase balance export to
Inversion unit (3)；
The anticipation current curve for prejudging curve generation module (41) generation this moment and its corresponding compensation current are stored to depositing
Store up in module (42)；
S6, the compensation current in step S4 or S5 is converted into the control signal of inversion unit (3), control inversion unit (3)
Work, the current three-phase balance of control power distribution network (1).
7. antidote according to claim 6, it is characterised in that the step S4 also includes：
If prejudging current curve and the success of current fluctuation curve comparison, access privileges corresponding to the current fluctuation curve adds
One, and the allocating time of the current offset values of subsequent time corresponding to the current fluctuation curve is in anti-with above-mentioned access privileges
Correlation is set.
8. antidote according to claim 6, it is characterised in that the antidote also includes test input step：
After power supply and load and loaded work piece, detection gathers every current fluctuation curve in power distribution network (1) and stored
Into memory module (42)；
Calculate needed for above-mentioned current fluctuation curve subsequent time, current three-phase compensated to the compensation current of poised state,
And stored into memory module (42)；
The corresponding compensation current of the current fluctuation curve is stored by the way of associated storage.
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Denomination of invention: An intelligent power quality correction device and correction method Effective date of registration: 20221216 Granted publication date: 20200421 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: XINCHENGRUI TECHNOLOGY Co.,Ltd. Registration number: Y2022980026431 |