CN204407907U - A kind of pressure-adjusting type voltage reactive automatic compensation device - Google Patents
A kind of pressure-adjusting type voltage reactive automatic compensation device Download PDFInfo
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- CN204407907U CN204407907U CN201520124802.3U CN201520124802U CN204407907U CN 204407907 U CN204407907 U CN 204407907U CN 201520124802 U CN201520124802 U CN 201520124802U CN 204407907 U CN204407907 U CN 204407907U
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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
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Abstract
The utility model discloses a kind of pressure-adjusting type voltage reactive automatic compensation device, comprise adjustable low-voltage DC power supply and four column iron cores, described adjustable low-voltage DC power supply and its column jacket of four column iron cores around the control coil of mutual series connection be connected, two column jackets of four column iron cores are around actuating coil, actuating coil one end connects the autotransformer and capacitor that are wrapped on two inner props, and the other end is that actuating coil interface end is also connected with mains-power circuit respectively with capacitor interface end; Described mains-power circuit comprises voltage transformer summation current transformer, and the output of voltage transformer summation current transformer is all connected with the signal input part of A/D change-over circuit with imaginary power automatic compensation microprocessor by sample circuit.The utility model achieves stepless voltage regulation and reaches the smoothing automatic adjustment of System Reactive Power, and reaction speed is fast, the object that compensation precision is high, and its structure is simple, and reliable, cost is low, significantly can reduce line loss, improves the economic benefit of power supply enterprise.
Description
Technical field
The utility model relates to circuit arrangement, specifically a kind of pressure-adjusting type voltage reactive automatic compensation device.
Background technology
Reactive power compensation is exactly that the device and inductive load with capacitive power are connected in same circuit, when capacitive device releases energy, inductive load absorbs energy, and inductive load is when releasing energy, capacitive device absorbs energy, energy, in mutual conversion, is compensated in the reactive power that the reactive power that inductive load absorbs can be exported by capacitive device.The mode of reactive power compensation has synchronous compensator SC, shunt capacitor MSC (FC), Static Type Dynamic Reactive Compensation Device SVC, static reacance generator SVG (STATCOM), also has pressure-regulating type reactive compensation device.It is current most popular a kind of reactive power source that shunt capacitor compensates, but there is capacitance group is grouping switching, switching shoves large shortcoming, voltage regulating imaginary power is compensated and is realized by on-load voltage regulating switch, have 9 gears, be equivalent to the capacitor of certain capacity to divide in order to 9 groups, do not have real to realize smooth adjustment.Static Type Dynamic Reactive Compensation Device and the high investment of static reacance generator price large.
And existing voltage regulating imaginary power automatic compensation device, wherein vacuum circuit breaker operating mechanism only adopts AC-powered, therefore when scene does not have AC-powered, when compensation arrangement breaks down, the connection of compensation arrangement and drawing electric network can not be disconnected in time, extremely easy drawing electric network to be caused the accident; And insulating oil on load tap changer in voltage regulator unit in use for some time, the impurity such as the free carbon in insulating oil and metal particle increase, make the puncture voltage of insulating oil unstable, and useful life is shorter, add maintenance number of times and maintenance difficulty, thus can not reliability service when causing whole device to work.
Utility model content
The purpose of this utility model is to provide a kind of pressure-adjusting type voltage reactive automatic compensation device, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of pressure-adjusting type voltage reactive automatic compensation device, a kind of pressure-adjusting type voltage reactive automatic compensation device, comprise adjustable low-voltage DC power supply and four column iron cores, described adjustable low-voltage DC power supply and its column jacket of four column iron cores around the control coil of mutual series connection be connected, also around actuating coil parallel with one another on two column jackets of described four column iron cores, described actuating coil one end is connected to successively and is wrapped in autotransformer on two inner props and capacitor, the other end of described actuating coil is actuating coil interface end and capacitor interface end, described actuating coil interface end and capacitor interface end are connected with needing the mains-power circuit carrying out reactive power compensation respectively, described mains-power circuit comprises voltage transformer summation current transformer, the output of voltage transformer summation current transformer is all connected with the signal input part of A/D change-over circuit with imaginary power automatic compensation microprocessor by sample circuit, described imaginary power automatic compensation microprocessor is connected with background computer system by communication interface, output end of microprocessor is connected with voltage regulator unit by drive circuit, voltage regulator unit output is connected with Capacitor banks, vacuum circuit-breaker is provided with between electrical network bus and voltage regulator unit, DC power supply is connected with vacuum circuit-breaker, vacuum circuit-breaker adopts powered by direct current, the input of sample circuit is also connected with temperature sensor, feedback signal testing circuit and electric capacity pressure differential detection circuit.
As further program of the utility model: described voltage regulator unit is Loading voltage regulator, is made up of on load tap changer and autotransformer.
As the utility model further scheme: described on load tap changer is connected with oil filter.
As the utility model further scheme: described iron core adopts three group of four column iron core, described three group of four column iron core control coil be looped around on each iron core two column jacket is mutually connected and to be connected with adjustable low-voltage DC power supply, also around actuating coil parallel with one another on described each iron core two column jacket, described actuating coil one end is connected to successively and is wrapped in autotransformer on two inner props and capacitor, the capacitor interface end be connected with each iron core autotransformer is connected with each phase line of electrical network respectively, on each iron core, the other end actuating coil interface end of actuating coil is interconnected to asterism.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by the idle output of voltage varying capacitors at adjustment capacitor two ends, the technical problem such as solve the overvoltage in capacitor switching, shove, between electrical network bus and Loading voltage regulator, be provided with vacuum circuit-breaker simultaneously adopt powered by direct current, ensure that vacuum circuit-breaker non-stop run, when compensation arrangement breaks down, the connection of compensation arrangement and houlage network can be disconnected at any time, improve the stability of plant running and the fail safe of system; Realizing stepless voltage regulation reaches the smoothing automatic adjustment of System Reactive Power, and reaction speed is fast, the object that compensation precision is high, and its structure is simple, and reliable, cost is low, significantly can reduce line loss, improves the economic benefit of power supply enterprise.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure-adjusting type voltage reactive automatic compensation device;
Fig. 2 is the fundamental diagram of pressure-adjusting type voltage reactive automatic compensation device;
Fig. 3 is the connection schematic diagram of pressure-adjusting type voltage reactive automatic compensation device;
Fig. 4 is the structural representation of the pressure-adjusting type voltage reactive automatic compensation device for three phase network;
In figure: the adjustable voltage DC power supply of 1-, 2-tetra-column iron core, 3-control coil, 4-actuating coil, 5-autotransformer, 6-capacitor, 7-capacitor interface end, 8-actuating coil interface end.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1 and Fig. 2, a kind of pressure-adjusting type voltage reactive automatic compensation device, comprise adjustable low-voltage DC power supply 1 and four column iron cores 2, described adjustable low-voltage DC power supply 1 and four its column jackets of column iron core 2 around the control coil 3 of mutual series connection be connected, also around actuating coil 4 parallel with one another on two column jackets of described four column iron cores 2, described actuating coil 4 one end is connected to successively and is wrapped in autotransformer 5 on two inner props and capacitor 6, the other end of described actuating coil 4 is that actuating coil interface end 8 is also connected with needing the mains-power circuit carrying out reactive power compensation respectively with capacitor interface end 7, described mains-power circuit comprises voltage transformer summation current transformer, the output of voltage transformer summation current transformer is all connected with the signal input part of A/D change-over circuit with imaginary power automatic compensation microprocessor by sample circuit, for the microprocessor of built-in A/D change-over circuit, then do not need to arrange A/D change-over circuit again.Imaginary power automatic compensation microprocessor is connected with background computer system by communication interface, output end of microprocessor is connected with voltage regulator unit by drive circuit, voltage regulator unit output is connected with Capacitor banks, vacuum circuit-breaker is provided with between electrical network bus and voltage regulator unit, DC power supply is connected with vacuum circuit-breaker, vacuum circuit-breaker adopts powered by direct current, ensures vacuum circuit-breaker non-stop run.The input of sample circuit is also connected with temperature sensor, feedback signal testing circuit, electric capacity pressure differential detection circuit, the feedback signal that wherein temperature sensor is used for measuring the oil temperature of voltage regulator unit, feedback switch amount circuit is used for detecting voltage regulator unit, electric capacity pressure reduction are used for measuring the voltage difference of Capacitor banks, when voltage regulator unit high oil temperature or can't detect the feedback signal of voltage regulator unit or capacitor pressure reduction exceed certain thresholds time, microprocessor exports control signal makes vacuum circuit-breaker disconnect, and makes package unit disconnect the connection with bus.
Refer to Fig. 3, control cubicle ZWK comprises microprocessor and background computer system and peripheral circuits thereof, and voltage transformer comprises main transformer voltage transformer YH and capacitor voltage transformer YH11, gathers the voltage signal of bus and the voltage signal at Capacitor banks two ends respectively; Current transformer comprises main transformer current transformer LH and capacitance current instrument transformer LH11, gathers the current signal of bus and the current signal of Capacitor banks respectively.Main transformer voltage transformer YH and main transformer current transformer LH is arranged between main transformer electrical contact net and control cubicle ZWK, and vacuum circuit-breaker ZN is connected between electrical network bus and Loading voltage regulator TW, for performing error protection.Be connected with lightning arrester and discharge counter BL between vacuum circuit-breaker ZN and Loading voltage regulator TW, discharge counter is connected on below lightning arrester, to lightning arrester discharge counting, guarantees that compensation arrangement is from lightning impulse.High voltage isolator SW is connected with between lightning arrester BL and Loading voltage regulator TW.The output of Loading voltage regulator TW is connected with parallel single-phase capacitor C in turn and (adopts BAM type, be divided into four strings use), hollow series reactor L, separate unit spray-by-type fuse FU and parallel single-phase capacitor C in series use, and discharge coil FD is connected in parallel on parallel single-phase capacitor C two ends; Between Loading voltage regulator TW and parallel single-phase capacitor C, be connected with high voltage isolator SW1, capacitance current instrument transformer LH11 and capacitor voltage transformer YH11 is connected between control cubicle ZWK and parallel single-phase capacitor C.
The voltage signal of main transformer voltage transformer collection and the current signal of main transformer current transformer collection are input in imaginary power automatic compensation microprocessor by sample circuit and A/D change-over circuit, microprocessor by receive collection signal through data processing, calculate current apparent power, reactive power, active power, power factor, phase angle, the parameters such as harmonic wave, compare with the power factor threshold arranged or idle threshold value in good time, Drazin inverse control signal, this control signal is by driving Loading voltage regulator unit, Loading voltage regulator is made to export the voltage of different gear, thus the terminal voltage of varying capacitors group, make it to export different reactive powers, follow the tracks of imaginary power automatic compensation, reach timely compensation circuit reactive power, improve power factor, ensure the object of power supply quality.Drive circuit gathers the current gear tapped off signal of Loading voltage regulator simultaneously, feeds back to microprocessor, and microprocessor, through process computing, background computer system exports, display Loading voltage regulator current gear.Microprocessor is also according to the collection computing to Capacitor banks terminal voltage, current signal; the various protection such as overvoltage, overcurrent is taked to Capacitor banks; the data such as operation information, electrical quantity, operate time of compensation arrangement are kept in memory; and can data file be formed; these data are input to background computer by communication interface; when computer system monitor capacitor overvoltage, overcurrent, pressure reduction and temperature of oil in transformer too high time then output signal to microprocessor; make microprocessor export the tripping operation of control signal Direct driver vacuum circuit-breaker, whole system is protected.Operating personnel to arrange under various control model (fast reactive pattern, at a slow speed idle pattern, power factor pattern) voltage regulator each gear reactive power compensation scope thresholds and idle pattern trip stop time delays etc. at a slow speed by the keyboard of computer and mouse, the data of preservation are also checked by computer system, data also can generate tables of data or curve, conveniently carry out Real-Time Monitoring.
Refer to Fig. 4, for the pressure-adjusting type voltage reactive automatic compensation device of three phase network, its structure is, its iron core adopts three group of four column iron core 2, described three group of four column iron core 2 control coil 3 be looped around on each iron core two column jacket is mutually connected and is connected with adjustable low-voltage DC power supply 1, also around actuating coil 4 parallel with one another on described each iron core two column jacket, described actuating coil one end is connected to successively and is wrapped in autotransformer 5 on two inner props and capacitor 6, the capacitor interface end 7 be connected with each iron core autotransformer 5 is connected with each phase line of electrical network respectively, on each iron core, the other end actuating coil interface end 8 of actuating coil is interconnected to asterism.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (4)
1. a pressure-adjusting type voltage reactive automatic compensation device, comprise adjustable low-voltage DC power supply and four column iron cores, it is characterized in that, described adjustable low-voltage DC power supply and its column jacket of four column iron cores around the control coil of mutual series connection be connected, also around actuating coil parallel with one another on two column jackets of described four column iron cores, described actuating coil one end is connected to successively and is wrapped in autotransformer on two inner props and capacitor, the other end of described actuating coil is actuating coil interface end and capacitor interface end, described actuating coil interface end and capacitor interface end are connected with needing the mains-power circuit carrying out reactive power compensation respectively, described mains-power circuit comprises voltage transformer summation current transformer, the output of voltage transformer summation current transformer is all connected with the signal input part of A/D change-over circuit with imaginary power automatic compensation microprocessor by sample circuit, described imaginary power automatic compensation microprocessor is connected with background computer system by communication interface, output end of microprocessor is connected with voltage regulator unit by drive circuit, voltage regulator unit output is connected with Capacitor banks, vacuum circuit-breaker is provided with between electrical network bus and voltage regulator unit, DC power supply is connected with vacuum circuit-breaker, vacuum circuit-breaker adopts powered by direct current, the input of sample circuit is also connected with temperature sensor, feedback signal testing circuit and electric capacity pressure differential detection circuit.
2. pressure-adjusting type voltage reactive automatic compensation device according to claim 1, is characterized in that, described voltage regulator unit is Loading voltage regulator, is made up of on load tap changer and autotransformer.
3. pressure-adjusting type voltage reactive automatic compensation device according to claim 2, it is characterized in that, described on load tap changer is connected with oil filter.
4. the pressure-adjusting type voltage reactive automatic compensation device according to claim 1 or 2 or 3, it is characterized in that, described iron core adopts three group of four column iron core, described three group of four column iron core control coil be looped around on each iron core two column jacket is mutually connected and to be connected with adjustable low-voltage DC power supply, also around actuating coil parallel with one another on described each iron core two column jacket, described actuating coil one end is connected to successively and is wrapped in autotransformer on two inner props and capacitor, the capacitor interface end be connected with each iron core autotransformer is connected with each phase line of electrical network respectively, on each iron core, the other end actuating coil interface end of actuating coil is interconnected to asterism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124802.3U CN204407907U (en) | 2015-03-03 | 2015-03-03 | A kind of pressure-adjusting type voltage reactive automatic compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520124802.3U CN204407907U (en) | 2015-03-03 | 2015-03-03 | A kind of pressure-adjusting type voltage reactive automatic compensation device |
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| CN204407907U true CN204407907U (en) | 2015-06-17 |
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| CN201520124802.3U Expired - Fee Related CN204407907U (en) | 2015-03-03 | 2015-03-03 | A kind of pressure-adjusting type voltage reactive automatic compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208101A (en) * | 2016-08-17 | 2016-12-07 | 上海格蒂能源科技有限公司 | Intelligent follow-up electric energy apparatus for correcting and show merit analyze method |
| CN107394794A (en) * | 2017-07-26 | 2017-11-24 | 思源电气股份有限公司 | Voltage-controlled type imaginary power automatic compensation system and method |
-
2015
- 2015-03-03 CN CN201520124802.3U patent/CN204407907U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208101A (en) * | 2016-08-17 | 2016-12-07 | 上海格蒂能源科技有限公司 | Intelligent follow-up electric energy apparatus for correcting and show merit analyze method |
| CN106208101B (en) * | 2016-08-17 | 2023-07-07 | 上海格蒂能源科技有限公司 | Intelligent follow-up electric energy correction device and indicator analysis method |
| CN107394794A (en) * | 2017-07-26 | 2017-11-24 | 思源电气股份有限公司 | Voltage-controlled type imaginary power automatic compensation system and method |
| CN107394794B (en) * | 2017-07-26 | 2023-12-19 | 上海思源光电有限公司 | Voltage-controlled reactive power automatic compensation system and method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20170303 |