CN102646985A - Compensating method and control software of electric power reactive tracking compensator - Google Patents
Compensating method and control software of electric power reactive tracking compensator Download PDFInfo
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- CN102646985A CN102646985A CN2010105544672A CN201010554467A CN102646985A CN 102646985 A CN102646985 A CN 102646985A CN 2010105544672 A CN2010105544672 A CN 2010105544672A CN 201010554467 A CN201010554467 A CN 201010554467A CN 102646985 A CN102646985 A CN 102646985A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention relates to a compensating method and control software of an electric power reactive tracking compensator and belongs to the technical field of electric power reactive compensation. Problems of larger circular switching on/off gradient and frequent binary switching on/off are solved, through utilizing two groups of compensation capacitors and firstly circularly switching on/off, converting to switch on/off in a binary counting manner when a power factor reaches a preset value under the support of the control software. The control software comprises a program initialization program, an invoke calculating subprogram, an invoke displaying subprogram, an invoke switching subprogram, and a jump to invoke calculation subprogram, wherein the invoke switching subprogram is used for determining to carry out a switching off or on subprogram according to a judge result that a calculation power factor angle and a sensing line are capacitance, resistance or sensibility, and a complementary purpose is realized through cyclic compensation and binary linear compensation under the control of a microcomputer, thus a compensation effect is more ideal, the switching is not frequent, the compensation power factor can reach more than 0.95, and the economical and social benefits are remarkable.
Description
Technical field
The present invention relates to a kind of compensation method and Control Software Control Software thereof of electric power reactive-load track compensator, belong to the electric reactive compensating technical field.
Background technology
In electric power system, many power consumption equipments are perceptual, because inductive load can make the electric current lagging voltage; So power factor is low excessively; In identical supply network,, the power supply capacity of controller switching equipment is descended if power factor is low excessively; When most importantly reactive current is through lead, can the loss active energy.In order to remedy this type problem, often adopt switching and connect the method for capacitor group, compensate reactive power; Improve power factor, a kind of compensator relatively more commonly used at present being to use the mode of circulation time-delay switching; The capacitor volume on the every road of this compensator equates, and capacitor volume is bigger, so in compensation process, just may occur dropping into regard to overcompensation; Withdraw from and under-compensated phenomenon, oscillatory occurences that Here it is, reason are that the compensation gradient is bigger; Another kind of compensator carries out switching (hereinafter to be referred as the binary system switching) by the binary counting mode, though compensation effect is more satisfactory, there is the frequent excessively problem of switching in this binary system switching.
Summary of the invention
The compensation method and the Control Software Control Software thereof that the purpose of this invention is to provide a kind of electric power reactive-load track compensator; Solve the frequent excessively deficiency of switching that oscillatory occurences that existing circulation time-delay switching mode exists and binary system switching exist, the realization compensation effect is more satisfactory and switching is not frequent.
The objective of the invention is to realize that through following technical scheme a kind of compensation method of electric power reactive-load track compensator is characterized in that described method is to adopt two groups of compensation condensers; One group of switching cycle, another group is carried out switching by the binary counting mode, at first moves switching cycle; When power factor reached set point, running status transferred the binary system switching to, when withdrawing from; Then at first excise binary system capacitor group, excise circulation compensation condenser group again.
A kind of compensation method Control Software of reactive-load track compensator; Comprise program initialization, call counting subroutine, call display subroutine, call the switching subprogram, jump to and call counting subroutine, it is characterized in that the described switching subprogram of calling is to be that capacitive or resistive, perception decision are carried out the excision subprogram or dropped into subprogram according to rated output factor angle with looking into the survey line road.
The present invention is through adopting two groups of compensation condensers, and at first move switching cycle, when power factor reaches set point, transfer the binary system switching again to; Be under the support of control core circuit and related software with the computer, accomplishing data acquisition, processing, solving bigger problem and the frequent excessively problem of binary system switching of switching cycle gradient; The present invention passes through microcomputerized control; Making circulation compensation and binary system linear compensation reach the purpose of complementation, making compensation effect more satisfactory and switching is not frequent, the compensation power factor can reach more than 0.95; Satisfy the exploitation of reactive-load compensator and produce needs, have remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is a main program flow chart of the present invention;
Fig. 2 is switching subroutine flow chart among the present invention;
Fig. 3 drops into subroutine flow chart among the present invention;
Fig. 4 excises subroutine flow chart among the present invention;
Fig. 5 regulates subroutine flow chart among the present invention;
Embodiment
Further specify the present invention in conjunction with accompanying drawing and embodiment, compensation method of the present invention is to adopt two group capacitors, and one group is that all capacitor volume equate; As circulation compensation condenser group; Another group is the capacitor group by the binary number word arrangement, at first moves circulation compensation condenser group during operation, carries out switching cycle; When power factor was mended certain numerical value, running status transferred the binary system switching to.When withdrawing from, at first excise the electric capacity of binary system capacitor group, after the capacitor of binary system capacitor group had been moved back, running status transferred the circulation excision to.Detailed process illustrates as follows: the transformer of a 400Kva, and desiring the compensating reactive power amount is 150Kvar, and the capacitor of circulation compensation condenser group is divided into 4 the tunnel, and every road is 30Kvar, altogether 120Kvar.The electric capacity total capacity of binary system capacitor group is 30Kvar, also is divided into 4 the tunnel, and every appearance of a street amount is respectively 2Kvar, 4Kvar, 8Kvar, 16Kvar.Require the compensation power factor between 0.95 to 0.99, binary system capacitor group reaches more than 0.90 bring into operation (being set point) in power factor.Circulate when bringing into operation to establish and cut, single-chip microcomputer is monitored power factor constantly, at this moment has three kinds of situation all can get into the binary system running status, and (1) power factor is more than 0.90; (2) capacitor of circulation capacitor group has all put into operation; (3) overcompensation; At first check the capacitor whether binary system capacitor group puts into operation, withdraw from by the binary counting mode, if just do not excise one tunnel circulation capacitor group if just have; Change the adjusting subprogram then over to; Regulate subprogram and move, regulate subprogram, will adjust to power factor more than 0.95 once get into by the binary counting mode.
The realization of this compensation method; Also need the support of software; In the design of this routine, dropping into threshold value is that power factor drops into capacitor less than 0.95; The excision threshold value be greater than 0.99 or excises capacitor during for capacitive that the set point that switching cycle transfers to by the binary counting switching is a power factor 0.90.Control Software comprises program initialization, calls counting subroutine, calls display subroutine, calls the switching subprogram, jumps to and call counting subroutine, and wherein calling the switching subprogram and be according to rated output factor angle is that capacitive or resistive, perception decision are carried out the excision subprogram or dropped into subprogram with looking into the survey line road.Drop into subprogram, as power factor during less than set point (COS < 0.90 time), drop into one tunnel circulation capacitor, power factor is greater than set point and when dropping into threshold value (0.90 < COS < 0.95), operation binary system capacitor group; The excision subprogram, when power factor greater than excision threshold value (0.99) or excise the capacitor group during for capacitive, at first excise two and advance the capacitor group, excise circulation capacitor group again, every excision capacitor that once circulates all can call and once regulates subprogram.
Claims (2)
1. the compensation method and the Control Software thereof of an electric power reactive-load track compensator is characterized in that described method is to adopt two groups of compensation condensers, one group of switching cycle; Another group is carried out switching by the binary counting mode, at first moves switching cycle, when power factor reaches set point; Running status transfers the binary system switching to; When withdrawing from, then at first excise binary system capacitor group, excise circulation compensation condenser group again;
(1), in two groups of compensation condensers, one group is that all capacitor volume equate, is circulation compensation condenser group, another group is the capacitor group by the binary number word arrangement;
(2), each is made up of two-way at least for circulation compensation condenser group and binary system capacitor group;
(3), the capacity on each road just in time is the summation of binary system capacitor group capacitance in the circulation compensation condenser group.
2. the compensation method and the Control Software thereof of a kind of electric power reactive-load track compensator according to claim 1; It is characterized in that: a kind of compensation method Control Software of reactive-load track compensator; Comprise program initialization, call counting subroutine, call display subroutine, call the switching subprogram, jump to and call counting subroutine, it is characterized in that the described switching subprogram of calling is to be capacitive or resistive, perceptual decision execution excision subprogram or to drop into subprogram according to rated output factor angle and detection line;
(1), when power when reaching set point. running status transfers the binary system switching to, when power factor is set point when following, drops into the circulation capacitor, when power factor is more than the set point and dropping into threshold value when following, throws binary system capacitor group;
(2), have three kinds of states all can move the binary system switching, (1) when power factor during greater than set point, when had all thrown when circulation capacitor group (2), (3) were not when overcompensation and binary system capacitor group drop into; The excision subprogram is at first excised binary system capacitor group by the binary counting mode, excises circulation capacitor group again, and every excision capacitor group that once circulates will be called and once regulates subprogram;
(3), regulate subprogram and move by the binary counting mode, regulate subprogram once get into, will adjust to power factor more than 0.95.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105544672A CN102646985A (en) | 2011-02-21 | 2011-02-21 | Compensating method and control software of electric power reactive tracking compensator |
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| CN2010105544672A CN102646985A (en) | 2011-02-21 | 2011-02-21 | Compensating method and control software of electric power reactive tracking compensator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079147A (en) * | 2014-07-16 | 2014-10-01 | 南方电网科学研究院有限责任公司 | Power module dynamic grouping voltage balancing control method of modular multi-level converter |
| CN105656060A (en) * | 2016-03-29 | 2016-06-08 | 国网浙江奉化市供电公司 | Transformer and regional power grid system |
| CN108899915A (en) * | 2018-07-05 | 2018-11-27 | 郑州耀冉节能科技有限公司 | A kind of operation/cutting method of reactive power compensation device and its capacitor group |
-
2011
- 2011-02-21 CN CN2010105544672A patent/CN102646985A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079147A (en) * | 2014-07-16 | 2014-10-01 | 南方电网科学研究院有限责任公司 | Power module dynamic grouping voltage balancing control method of modular multi-level converter |
| CN104079147B (en) * | 2014-07-16 | 2016-08-24 | 南方电网科学研究院有限责任公司 | A kind of power model Dynamic Packet pressure equalizing control method of modular multi-level converter |
| CN105656060A (en) * | 2016-03-29 | 2016-06-08 | 国网浙江奉化市供电公司 | Transformer and regional power grid system |
| CN108899915A (en) * | 2018-07-05 | 2018-11-27 | 郑州耀冉节能科技有限公司 | A kind of operation/cutting method of reactive power compensation device and its capacitor group |
| CN108899915B (en) * | 2018-07-05 | 2021-09-24 | 郑州耀冉节能科技有限公司 | Reactive power compensation device and switching method of capacitor bank thereof |
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Application publication date: 20120822 |