CN105515013B - A kind of reactive power compensator of transformer combination pressure regulation - Google Patents

A kind of reactive power compensator of transformer combination pressure regulation Download PDF

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Publication number
CN105515013B
CN105515013B CN201610058648.3A CN201610058648A CN105515013B CN 105515013 B CN105515013 B CN 105515013B CN 201610058648 A CN201610058648 A CN 201610058648A CN 105515013 B CN105515013 B CN 105515013B
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unit
transformer
detection unit
electrical connection
capacitor
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CN105515013A (en
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米永胜
涂金龙
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Shenyang Dongsheng Electric Power Technology Research Institute Co ltd
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Nanjing Communications Institute of Technology
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/16Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

A kind of reactive power compensator of transformer combination pressure regulation, including:Multi-tap transformer [1], pressure unit [2], pressure regulation unit [3], two-winding transformer [4], the 1st detection unit [5], the 2nd detection unit [6], the 3rd detection unit [7], switch element [8], intelligent cell [9], capacitor switching unit [10], capacitor cell [11];Intelligent cell [9] includes the drive circuit of microcontroller circuit, signal conditioning circuit and bidirectional thyristor.1st detection unit [5] includes non-linear component [21], compensating element, [22], voltage sampling element [23], signal processing unit [24].Size by intelligent cell according to the inductive reactive power component of load, it is determined that need the reactive component size compensated, and required capacitance is calculated automatically and adds voltage on the capacitor, by using 2 transformer combination pressure regulation, and be combined with capacitor cell, and then quick reactive-load compensation is carried out to load.

Description

A kind of reactive power compensator of transformer combination pressure regulation
Technical field
The present invention relates to a kind of capacitive reactive compensation device, the reactive-load compensation dress of particularly a kind of transformer combination pressure regulation Put, belong to technical field of electricity.
Background technology
Reactive power is the magnetic field required for producing electrical equipment mostly, particularly the electricity such as motor, transformer Induction equipment.Although reactive power does not consume electric energy, it will produce reactive current in circuit, and reactive current can equally increase Add the burden of electric wiring and potential device, reduce the utilization rate of electric wiring and potential device, increase the heating of electric wiring Amount.But if without it, electrical equipment(The particularly inductive equipment such as motor, transformer)Cisco unity malfunction again.It is logical It is often that electricity container is produced with inductive current electric current in opposite direction to offset inductive current.So, neither influence motor, become The inductive such as depressor equipment produces magnetic field, and and can eliminates or reduced the inductive current on circuit.As long as the electricity accessed on the line Hold quantity and match with the inductive component loaded, caused capacitance current just effectively can eliminate or reduce the electricity on circuit Inducing current, that is, the reactive power that load is drawn to power network is eliminated or reduces, so as to reduce electric wiring and potential device Burden, the utilization rate of electric wiring and potential device is improved, reduce the caloric value of electric wiring.
The reactive power of many electrical equipments is bigger, it is necessary to its progress reactive-load compensation, and system can be improved after compensation Power factor, improve power quality.But the compensation principle to reactive-load compensation is to mend less, can not compensate excess.
Current reactive power compensator, there is power electronics formula, also there is a capacitance compensation, high-frequency power electronic formula it is idle Compensation device is complicated, and reliability is relatively low, and capacity can not be made very big.Electricity container group compensates, because of electric power Capacitor is usually made fixed value, accesses capacitor with switching device, typically adds nothing with mechanical contact or mechanical contact Contact, response speed is slower, not ideal enough to some idle faster reactive-load compensation effects of change.
IGCT has advantage in the application of high-voltage large current, however, it bears overvoltage, the ability of overcurrent very Difference, and the thermal capacity very little of IGCT, when overcurrent occurs, temperature steeply rises, and may burn out PN junction, cause member Part internal short-circuit or open circuit.IGCT belongs to half control type device, the conducting of its gate signal energy control element, but can not control it Shut-off, although GTO gate signal can control device conducting, and can controls its shut-off, and its control circuit is complicated, equally The reliability of system can be reduced.For common IGCT, after triggering and conducting, it is necessary to the electric current mistake when flowing through IGCT Turned off naturally when zero, therefore, in order to efficiently control IGCT, just must accurately measure the electric current for flowing through IGCT.Only To carrying out non-linear sampling by the electric current of transformer associated winding, resolution ratio during instantaneous low current signal was both improved, had been protected again Voltage drop when demonstrate,proving high current signal on sampling element is relatively low, just can guarantee that system possesses excellent in the current range of broadness Performance.It is pair mostly however, being substantially shunt resistance, current transformer or Hall element to the element of current sampling at present Electric current is linearly sampled, and in small-signal, resolution ratio is low, it is difficult to meets the needs of some special applications.
The content of the invention
It is an object of the invention to propose a kind of reactive power compensator of transformer combination pressure regulation, 2 transformer groups are used Pressure regulation is closed, and is combined with capacitor cell, passes through the tap of No-contact switch multi-tap transformer and the electricity of switching different capabilities Container, the quick compensation to reactive power can be accomplished.
What the present invention was realized in:A kind of reactive power compensator of transformer combination pressure regulation, it is characterised in that including: Multi-tap transformer [1], pressure unit [2], pressure regulation unit [3], two-winding transformer [4], the 1st detection unit [5], the 2nd inspection Survey unit [6], the 3rd detection unit [7], switch element [8], intelligent cell [9], capacitor switching unit [10], capacitor cell [11];
Multi-tap transformer [1] is formed with switch element [8] and is electrically connected, and electromagnetic coupled is formed with pressure unit [2];
1st detection unit [5] is formed with two-winding transformer [4], switch element [8], intelligent cell [9] and is electrically connected;
Pressure regulation unit [3] forms electromagnetic coupled with two-winding transformer [4], with pressure unit [2], the 2nd detection unit [6] electrical connection is formed;
Capacitor switching unit [10] is formed with the 2nd detection unit [6], capacitor cell [11] and is electrically connected;
Intelligent cell [9] and the 1st detection unit [5], the 2nd detection unit [6], the 3rd detection unit [7], switch element [8] Form electrical connection;
3rd detection unit [7] forms electrical connection with intelligent cell [9] and power input, power supply output.
Described multi-tap transformer T1 secondary windings W6(That is pressure unit [2])With two-winding transformer T2 secondary Winding(That is pressure regulation unit [3])It is connected in series, with the 2nd detection unit [6](That is CY2)Form electrical connection;
Multi-tap transformer T1 secondary windings W6 Same Name of Ends is connected with armature winding W1 Same Name of Ends, winding W6 strings Couple the output voltage after power supply and be less than power input voltage Ui, under such a connected mode, winding W6 is pressure unit [2]。
Described switch element [8] is made up of more bidirectional thyristor S1~S8 and fastp-acting fuse F1~F8, and every double To 1 fastp-acting fuse of Thyristors in series;
Bidirectional thyristor S1, S2, S7, S8 first anode link together, with the 1st detection unit CY1 [5] and transformer T2 armature winding forms electrical connection;Bidirectional thyristor S1, S2, S7, S8 second plate respectively through fastp-acting fuse F1, F2, F7, F8 are connected to multi-tap transformer T1 W1 windings both ends and W5 windings both ends;
Bidirectional thyristor S3, S4, S5, S6 first anode link together, with the 1st detection unit CY1 [5] and transformer T2 armature winding forms electrical connection;Bidirectional thyristor S3, S4, S5, S6 second plate respectively through fastp-acting fuse F3, F4, F5, F6 are connected to multi-tap transformer T1 4 centre taps;
Bidirectional thyristor S1~S8 control pole is formed with intelligent cell ZN1 [9] and is electrically connected, S1~S8 trigger signal Controlled by intelligent cell ZN1 [9].
Described capacitor switching unit [10] contains more bidirectional thyristor S9~S12 and fastp-acting fuse F9~F12, respectively The first anode of bidirectional thyristor links together, and forms and is electrically connected with the 2nd detection unit [6];Each bidirectional thyristor Second plate respectively series connection 1 fastp-acting fuse, then the capacitor respectively with different capabilities in capacitor cell [11] be connected;
Bidirectional thyristor S9~S12 control pole is formed with intelligent cell ZN1 [9] and is electrically connected, S9~S12 triggering letter Number by intelligent cell ZN1 [9] control.
Described capacitor cell [11] contains multiple unit capacitor, respectively two-way brilliant lock corresponding to capacitor switching unit [10] The fastp-acting fuse of pipe branch road is connected;Each bidirectional thyristor branch road 1 group capacitor of corresponding connection, the capacity of each group capacitor Configured by binary rule.
Described intelligent cell [9] includes microcontroller circuit, signal conditioning circuit and bidirectional thyristor S1~S12 Drive circuit.
The 1st described detection unit [5] includes non-linear component [21], compensating element, [22], voltage sampling element [23] , signal processing unit [24];
Signal processing unit [24] and non-linear component [21], compensating element, [22], voltage sampling element [23], intelligence Unit [9] forms electrical connection;
Non-linear component [21] is connected in parallel with compensating element, [22], and is formed with signal processing unit [24] and electrically connected Connect, two-winding transformer T2 input current zero point detection signal is provided for signal processing unit [24];
Voltage sampling element [23] is formed with signal processing unit [24] and is electrically connected, and is provided for signal processing unit [24] Two-winding transformer T2 input voltage size and zero point detection signal.
Non-linear component [21] in the 1st described detection unit [5] includes resistance R21, R22 and the pole of NPN type power three Pipe V21, V22;
Triode V21 base stage is connected through resistance R21 with triode V21 colelctor electrode and triode V22 emitter stage; Triode V22 base stage is connected through resistance R22 with triode V22 colelctor electrode and triode V21 emitter stage;As compensation The resistance R23 of element [22] is connected in parallel with non-linear component [21], and is formed and be electrically connected with signal processing unit [24].
Operation principle is:Intelligent cell [9] calculates need to compensate idle point by detecting the inductive reactive power component loaded Amount, due to capacitor reactive capability and condenser voltage it is square directly proportional:
Q=2 π fCU2
Q is the reactive power of capacitor in formula, and f is the frequency of power supply, and C is the capacity of capacitor, and U is the work of capacitor Make voltage.
Therefore it can determine that the reactive component that needs compensate is big by intelligent cell according to the size of the inductive reactive power component of load It is small, and calculate required capacitance automatically and add voltage on the capacitor, multistage, quick nothing is carried out to load Work(compensates.
Advantages of the present invention and effect are that quick reactive-load compensation can be carried out to load, and simple in construction, long lifespan, Cost is relatively low.
Brief description of the drawings
Fig. 1 is the functional-block diagram of the present invention.
Fig. 2 is the principle schematic of the embodiment of the present invention.
Fig. 3 is the functional-block diagram of the 1st detection unit of the invention.
Fig. 4 is the principle schematic of the 1st detection unit of the embodiment of the present invention.
Embodiment
The embodiment that the invention will now be described in detail with reference to the accompanying drawings.
It refer to Fig. 1, a kind of reactive power compensator of transformer combination pressure regulation, including:Multi-tap transformer [1], decompression Unit [2], pressure regulation unit [3], two-winding transformer [4], the 1st detection unit [5], the 2nd detection unit [6], the 3rd detection unit [7], switch element [8], intelligent cell [9], capacitor switching unit [10], capacitor cell [11];Multi-tap transformer [1] is with opening Close unit [8] and form electrical connection, electromagnetic coupled is formed with pressure unit [2];1st detection unit [5] and two-winding transformer [4], switch element [8], intelligent cell [9] form electrical connection;Pressure regulation unit [3] forms electricity with two-winding transformer [4] Magnetic coupling, form and be electrically connected with pressure unit [2], the 2nd detection unit [6];Capacitor switching unit [10] and the 2nd detection unit [6], capacitor cell [11] forms electrical connection;Intelligent cell [9] and the 1st detection unit [5], the 2nd detection unit [6], the 3rd inspection Survey unit [7], switch element [8] forms electrical connection;3rd detection unit [7] and intelligent cell [9] and power input, power supply Output forms electrical connection.
Please referring further to Fig. 2, multi-tap transformer T1 secondary windings W6(That is pressure unit [2])With double winding transformation Device T2 secondary windings(That is pressure regulation unit [3])It is connected in series, with the 2nd detection unit [6](That is CY2)Form electrical connection;It is more Tapped transformer T1 secondary windings W6 Same Name of Ends is connected with armature winding W1 Same Name of Ends, winding W6 series connection access power supplys Output voltage afterwards is less than power input voltage Ui, and under such a connected mode, winding W6 is pressure unit [2].
Switch element [8] is made up of more bidirectional thyristor S1~S8 and fastp-acting fuse F1~F8, every two-way brilliant lock Pipe 1 fastp-acting fuse of series connection;Bidirectional thyristor S1, S2, S7, S8 first anode link together, with the 1st detection unit CY1 [5] and transformer T2 armature winding forms electrical connection;Bidirectional thyristor S1, S2, S7, S8 second plate pass through respectively Fastp-acting fuse F1, F2, F7, F8 are connected to multi-tap transformer T1 W1 windings both ends and W5 windings both ends;Bidirectional thyristor S3, S4, S5, S6 first anode are linked together, and electricity is formed with the 1st detection unit CY1 [5] and transformer T2 armature winding Gas connects;Bidirectional thyristor S3, S4, S5, S6 second plate are connected to multi-tap through fastp-acting fuse F3, F4, F5, F6 respectively Transformer T1 4 centre taps;Bidirectional thyristor S1~S8 control pole is formed with intelligent cell ZN1 [9] and is electrically connected, S1 ~S8 trigger signal is controlled by intelligent cell ZN1 [9].
Capacitor switching unit [10] contains more bidirectional thyristor S9~S12 and fastp-acting fuse F9~F12, each two-way crystalline substance The first anode of brake tube links together, and forms and is electrically connected with the 2nd detection unit [6];Second sun of each bidirectional thyristor Extremely respectively series connection 1 fastp-acting fuse, then the capacitor respectively with different capabilities in capacitor cell [11] be connected;Two-way brilliant lock Pipe S9~S12 control pole is formed with intelligent cell ZN1 [9] and is electrically connected, and S9~S12 trigger signal is by intelligent cell ZN1 [9] control.
Capacitor cell [11] contains multiple unit capacitor, respectively bidirectional thyristor branch road corresponding to capacitor switching unit [10] Fastp-acting fuse be connected;Each bidirectional thyristor branch road 1 group capacitor of corresponding connection, the capacity of each group capacitor enter by two The rule configuration of system.
Intelligent cell [9] includes the driving electricity of microcontroller circuit, signal conditioning circuit and bidirectional thyristor S1~S12 Road.
Please referring further to Fig. 3, the 1st described detection unit [5] include non-linear component [21], compensating element, [22], Voltage sampling element [23], signal processing unit [24];Signal processing unit [24] and non-linear component [21], compensating element, [22], voltage sampling element [23], intelligent cell [9] form electrical connection;Non-linear component [21] and compensating element, [22] are simultaneously Connection connection, and form and be electrically connected with signal processing unit [24], provide two-winding transformer T2 for signal processing unit [24] Input current zero point detection signal;Voltage sampling element [23] is formed with signal processing unit [24] and is electrically connected, and is signal Processing unit [24] provides two-winding transformer T2 input voltage size and zero point detection signal.
Please referring further to Fig. 4, non-linear component [21] include resistance R21, R22 and NPN type pliotron V21, V22;Triode V21 base stage is connected through resistance R21 with triode V21 colelctor electrode and triode V22 emitter stage;Three poles Pipe V22 base stage is connected through resistance R22 with triode V22 colelctor electrode and triode V21 emitter stage;Resistance R21 and R22 For small valued resistor, thus NPN type pliotron V21 and V22 are operated in the amplification region near saturation region, this connected mode Resolution ratio during instantaneous low current signal can be improved, and can effectively reduces the positive and negative half-wave high current signal of alternating current in triode Voltage drop on V21 and V22, the power attenuation of sampling assemble when effectively reducing high current.
Compensating element, [22] is served as by linear resistance R23, is connected in parallel with non-linear component [21], for compensating low current Linearity during signal, and form and be electrically connected with signal processing unit [24];
Voltage sampling element [23] is served as by transformer T21, for two-winding transformer T2 input voltage is carried out every From with sampling, with signal processing unit [24] form be electrically connected.
The operation principle of the present apparatus is:Intelligent cell ZN1 [9] detects load Z electricity by the 3rd detection unit CY3 [7] Pressure, the amplitude and phase of electric current, calculate inductive reactive power component and need the reactive component compensated, it is determined that needing idle point compensated Measure size, and then the capacitance of compensation needed for calculating and add voltage on the capacitor, then provide control signal:One 1 in aspect control bidirectional thyristor S9-S12 or the conducting of several bidirectional thyristors, selection need the condenser capacity accessed; On the other hand 2 bidirectional thyristors conducting in control bidirectional thyristor S1-S8, it is corresponding that multi-tap transformer T1 is connected in selection Transformer tapping, the voltage of multi-tap primary part winding is added in two-winding transformer T2 input, multi-tap Transformer T1 and two-winding transformer T2 secondary windings are connected in power supply phase line, wherein multi-tap transformer T1 it is secondary around Group acts to reduce input supply voltage, two-winding transformer T2 secondary windings can just negative regulator voltage, so as to can adjust The voltage being output on capacitor cell [11].Selection gear is combined to multi-tap transformer T1 by switch element [8], made adjustable The voltage gear of section(Or level)Number reaches 15 grades;Pass through the capacity of 4 group capacitors configured by binary rule, capacitance Change is up to 16 grades(Or level), thus compensable reactive capability can reach 15 × 16=240 levels altogether.Due to moving for IGCT Make speed, thus the present apparatus can carry out multistage, quick reactive-load compensation to load.

Claims (7)

  1. A kind of 1. reactive power compensator of transformer combination pressure regulation, it is characterised in that including:Multi-tap transformer T1(1), decompression Unit(2), pressure regulation unit(3), two-winding transformer T2(4), the 1st detection unit(5), the 2nd detection unit(6), the 3rd detection it is single Member(7), switch element(8), intelligent cell(9), capacitor switching unit(10), capacitor cell(11);
    Multi-tap transformer T1(1)Secondary windings W6 as pressure unit(2), with switch element(8)Form electrical connection;
    1st detection unit(5)With two-winding transformer T2(4), switch element(8), intelligent cell(9)Form electrical connection;
    Two-winding transformer T2(4)Secondary windings as pressure regulation unit(3), with pressure unit(2), the 2nd detection unit(6)Structure Into electrical connection;
    Capacitor switching unit(10)With the 2nd detection unit(6), capacitor cell(11)Form electrical connection;
    Intelligent cell(9)With the 1st detection unit(5), the 2nd detection unit(6), the 3rd detection unit(7), switch element(8)Form Electrical connection;
    3rd detection unit(7)With intelligent cell(9)And the output of power input, power supply forms electrical connection, it is necessary to carry out idle benefit The load repaid is connected to power output end;
    Multi-tap transformer T1(1)Two terminals be connected to need carry out reactive-load compensation load power input, by electricity Hold unit(11)The load for needing compensating reactive power is compensated.
  2. 2. the reactive power compensator of a kind of transformer combination pressure regulation according to claim 1, it is characterised in that described is more Tapped transformer T1(1)Secondary windings W6, i.e. pressure unit(2), with two-winding transformer T2(4)Secondary windings be pressure regulation Unit(3)It is connected in series, with the 2nd detection unit(6)That is CY2 forms electrical connection;
    Multi-tap transformer T1(1)Secondary windings W6 Same Name of Ends be connected with armature winding W1 Same Name of Ends, winding W6 strings Couple the output voltage after power supply and be less than power input voltage Ui, winding W6 is pressure unit(2).
  3. 3. the reactive power compensator of a kind of transformer combination pressure regulation according to claim 1, it is characterised in that described opens Close unit(8)It is made up of more bidirectional thyristor S1~S8 and fastp-acting fuse F1~F8, every bidirectional thyristor connects 1 soon Fast fuse;
    Bidirectional thyristor S1, S2, S7, S8 first anode link together, with the 1st detection unit(5)And two-winding transformer T2(4)Armature winding one end form electrical connection;Bidirectional thyristor S1, S2, S7, S8 second plate are respectively through fast fast thawing Disconnected device F1, F2, F7, F8 are connected to multi-tap transformer T1(1)W1 windings both ends and W5 windings both ends;
    Bidirectional thyristor S3, S4, S5, S6 first anode link together, with the 1st detection unit(5)And two-winding transformer T2(4)Armature winding the other end form electrical connection;Bidirectional thyristor S3, S4, S5, S6 second plate are respectively through quick Fuse F3, F4, F5, F6 are connected to multi-tap transformer T1(1)4 centre taps;
    Bidirectional thyristor S1~S8 control pole and intelligent cell(9)Electrical connection is formed, S1~S8 trigger signal is by intelligence Unit(9)Control.
  4. A kind of 4. reactive power compensator of transformer combination pressure regulation according to claim 1, it is characterised in that described electricity Hold switching unit(10)Containing more bidirectional thyristor S9~S12 and fastp-acting fuse F9~F12, the first of each bidirectional thyristor Anode links together, with the 2nd detection unit(6)Form electrical connection;The respectively series connection 1 of the second plate of each bidirectional thyristor Fastp-acting fuse, then respectively with capacitor cell(11)The capacitor of middle different capabilities is connected;
    Bidirectional thyristor S9~S12 control pole and intelligent cell(9)Electrical connection is formed, S9~S12 trigger signal is by intelligence Can unit(9)Control.
  5. A kind of 5. reactive power compensator of transformer combination pressure regulation according to claim 1, it is characterised in that described electricity Hold unit(11)Containing multiple unit capacitor, respectively with capacitor switching unit(10)Corresponding bidirectional thyristor branch road quick fuse Device is connected;Each bidirectional thyristor branch road 1 group capacitor of corresponding connection, the capacity of each group capacitor are matched somebody with somebody by binary rule Put.
  6. A kind of 6. reactive power compensator of transformer combination pressure regulation according to claim 1, it is characterised in that described 1 detection unit(5)Including non-linear component(21), compensating element,(22), voltage sampling element(23), signal processing unit (24);
    Signal processing unit(24)With non-linear component(21), compensating element,(22), voltage sampling element(23), intelligent cell (9)Form electrical connection;
    Non-linear component(21)With compensating element,(22)It is connected in parallel, and and signal processing unit(24)Electrical connection is formed, is Signal processing unit(24)Two-winding transformer T2 is provided(4)Input current zero point detection signal;
    Voltage sampling element(23)With signal processing unit(24)Electrical connection is formed, is signal processing unit(24)Double wrap is provided Group transformer T2(4)Input voltage size and zero point detection signal.
  7. A kind of 7. reactive power compensator of transformer combination pressure regulation according to claim 1, it is characterised in that described 1 detection unit(5)In non-linear component(21)Including resistance R21, R22 and NPN type pliotron V21, V22;
    Triode V21 base stage is connected through resistance R21 with triode V21 colelctor electrode and triode V22 emitter stage;Three poles Pipe V22 base stage is connected through resistance R22 with triode V22 colelctor electrode and triode V21 emitter stage;As compensating element, (22)Resistance R23 and non-linear component(21)It is connected in parallel, and and signal processing unit(24)Form electrical connection.
CN201610058648.3A 2016-01-28 2016-01-28 A kind of reactive power compensator of transformer combination pressure regulation Active CN105515013B (en)

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CN106849101B (en) * 2017-01-22 2023-08-18 石家庄铁道大学 Hierarchical voltage regulator

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JP2000116005A (en) * 1998-10-02 2000-04-21 Sanken Electric Co Ltd Ac power unit
RU2310263C2 (en) * 2005-05-11 2007-11-10 Открытое акционерное общество "Всероссийский научно-исследовательский и проектно-конструкторский институт электровозостроения" (ОАО "ВЭлНИИ") Reactive power correction device
CN203929936U (en) * 2014-06-17 2014-11-05 广西电网公司河池供电局 A kind of capacity test device of inductive reactive power compensation equipment
CN205004752U (en) * 2015-10-10 2016-01-27 长沙三友仪器设备有限公司 Terminal automatic voltage regulation of distribution lines and reactive power compensator
CN205335853U (en) * 2016-01-28 2016-06-22 南京交通职业技术学院 Reactive power compensator of transformer combination pressure regulating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000116005A (en) * 1998-10-02 2000-04-21 Sanken Electric Co Ltd Ac power unit
RU2310263C2 (en) * 2005-05-11 2007-11-10 Открытое акционерное общество "Всероссийский научно-исследовательский и проектно-конструкторский институт электровозостроения" (ОАО "ВЭлНИИ") Reactive power correction device
CN203929936U (en) * 2014-06-17 2014-11-05 广西电网公司河池供电局 A kind of capacity test device of inductive reactive power compensation equipment
CN205004752U (en) * 2015-10-10 2016-01-27 长沙三友仪器设备有限公司 Terminal automatic voltage regulation of distribution lines and reactive power compensator
CN205335853U (en) * 2016-01-28 2016-06-22 南京交通职业技术学院 Reactive power compensator of transformer combination pressure regulating

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