CN201230214Y - Medium and high voltage bidirectional reactive automatic regulating apparatus - Google Patents
Medium and high voltage bidirectional reactive automatic regulating apparatus Download PDFInfo
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- CN201230214Y CN201230214Y CNU2008200399929U CN200820039992U CN201230214Y CN 201230214 Y CN201230214 Y CN 201230214Y CN U2008200399929 U CNU2008200399929 U CN U2008200399929U CN 200820039992 U CN200820039992 U CN 200820039992U CN 201230214 Y CN201230214 Y CN 201230214Y
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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
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- 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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Abstract
The utility model relates to a middle-high voltage bidirectional reactive automatic regulating device which includes a transformer primary bus, a transformer secondary bus, a microcomputer controller, a voltage detection transformer, a current detection transformer, an on-load voltage regulating transformer, a control box, a deeply self-coupled voltage regulator, a capacitor group, a reactor group, a capacitor series reactor group and switches K1, K2. The utility model is mainly characterized in that the on-off of the switches K1, K2 is controlled by the microcomputer to regulate the output reactive property and realize the bidirectional reactive power compensation, so the requirements for improving power supply quality and reducing loss are achieved. The utility model is mainly characterized in that the deeply self-coupled voltage regulator comprises an on-load tapping switch, and the position contact of the on-load tapping switch is controlled and regulated by a microcomputer to realize the on-time regular change of the active output. The utility model is suitable for the on-time bidirectional reactive regulation of medium-high voltage.
Description
Technical field
The utility model belongs to the two-way Reactive Power Automatic Regulating device of mesohigh, concrete is to regulate the capacitive of transformer station with perceptual idle, be a kind ofly to regulate idle reactive-load adjusting device, be applicable to power department and use electric unit by regulating capacitor and reactor terminal voltage.
Background technology
At present, bigger variation has taken place in China's network load overall condition, and 3 points are specifically arranged: the one, and great changes have taken place in industrial load and appliance load proportion.Past, proportion was big based on industrial load, and this part load is easy to grasp, and the increasing of civilian various household electrical appliances utilization rates now and the increase of desk-top transformer make the appliance load ratio increasing.The 2nd, great changes have all taken place in load capacity and load character.Raising day by day along with people's living standard, the utilization rate and the popularity rate of various household electrical appliance are more and more higher, appliance load has become a large amount of reactive power consumptions based on household electrical appliances such as air-conditioning, refrigerators from the past the meritorious consumption based on illumination, reactive requirement is very big, and wretched insufficiency has appearred in the idle supply of system.The 3rd, idle crest, trough differ greatly and are very big with weather, seasonal variations.Summer maximum idle approximately be minimum idle 7～12 times of winter, and same season, idle crest, trough also will differ 2～2.5 times.Therefore to adjust existing idle device, to guarantee that voltage is qualified.Reactive power compensation is to guarantee the qualified key factor of voltage, and reactive power compensation is again capacitive compensation and perception compensation, lacks capacitive reactive power, and voltage is on the low side, and it is idle to lack perception, and it is higher then can voltage to occur.What be used for capacitive reactive power compensation at present has the automatic grouping switching of fixed capacitor group, a SVC compensation arrangement technology.Yet undercompensation or overcompensation problem often appear in the automatic grouping switching technology of fixed capacitor group, and frequent switching also overvoltage can occur, the problem of shoving; Though SVC device real-time regulated is effective, equipment price costliness, maintenance technology complexity.Present reactive power compensation technology is basically at the capacitive reactive power compensation, though perceptual idle deficient phenomena is not very general, in case appearance just has a negative impact to the stability and the quality of power supply of voltage.For example, nineteen ninety-five the northeast electrical network some areas, the ceiling voltage of 500kV reaches 556kV, the ceiling voltage of 220kV is 257kV, obviously although the ceiling voltage 550kV and the 252kV that have surpassed equipment just in short-term, are still disadvantageous to the safe operation of electric equipment.Moreover along with urbanization process is constantly accelerated, cable outlet is adopted in more changeable power station, will occur the idle phenomenon of sending so in the second half of the night, causes perceptual idle disappearance, and reactive loss is increased, and voltage raises.Therefore, also need to disclose more specifically a kind of, more practical, the two-way reactive power compensator that is easier to realize.Be used to compensate capacitive, perceptual idle, guarantee power supply quality.
Summary of the invention
Technical problem: the purpose of this utility model is at the problems referred to above, proposes the two-way Reactive Power Automatic Regulating device of a kind of mesohigh.Have and be easy to realize, simple in structure, can realize idle reactive balance on the spot in real time, guarantee the advantage of power supply quality and equipment power grid security preferably.
Technical scheme: the two-way Reactive Power Automatic Regulating device of mesohigh of the present utility model is achieved through the following technical solutions.This device comprises the simple bus of transformer, transformer secondary output bus, microcomputerized controller, the first voltage detecting instrument transformer, the second voltage detecting instrument transformer, current detecting instrument transformer, on-load tap-changing transformer, first control box, second control box, degree of depth automatic coupling voltage regulator, reactor group and capacitor group, capacitors in series reactor group, first switch, second switch; It is characterized in that, the described first voltage detecting instrument transformer is connected with the simple bus of described transformer respectively with the current detecting instrument transformer, the described second voltage detecting instrument transformer is connected with described transformer secondary output bus respectively with degree of depth automatic coupling voltage regulator, the described first voltage detecting instrument transformer, the detection signal output of the second voltage detecting instrument transformer and described current detecting instrument transformer is connected with the input of described microcomputerized controller respectively, the signal output part of described microcomputerized controller respectively with described first control box, second control box is connected, first control box connects the control on-load tap-changing transformer, the 3rd output of second control box connects the control end of degree of depth automatic coupling voltage regulator, first output connects the control end of first switch, and second output connects the control end of second switch; Described on-load tap-changing transformer is connected between simple bus of described transformer and the transformer secondary output bus, and described degree of depth automatic coupling voltage regulator voltage output end is connected with the capacitor group by first switch, is connected with the reactor group by second switch.
Described degree of depth automatic coupling voltage regulator comprises an on load tap changer, eight sections voltage regulation coils, 10 contact m1～m10; Described load tap changer switch has 10 gear contact n1～n10,10 gear contact correspondences of 10 contacts of described voltage regulation coil and described on load tap changer are connected, every adjacent two contacts are connected, and realization is idle to be adjusted to 11%, the mechanism of described on load tap changer makes per two adjacent gear contacts connect under the control of described second control box, between the gear contact of described on load tap changer transition resistance is arranged; Described eight sections voltage regulation coils comprise first coil, second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil, the 8th coil.Described capacitors in series reactor group can effectively suppress overcurrent, the capacitor for voltage protection group.
Beneficial effect: this device is provided with the simple bus of transformer, transformer secondary output bus, microcomputerized controller, the first voltage detecting instrument transformer, the second voltage detecting instrument transformer, current detecting instrument transformer, on-load tap-changing transformer, first control box, second control box, degree of depth automatic coupling voltage regulator, capacitor group, reactor group, capacitor group series reactance, switch k1, k2.The utility model is the break-make by microcomputerized controller control switch k1, k2, thereby regulates the idle character of output, realizes two-way reactive power compensation.On-load tap-changing transformer of the present utility model is realized real-time pressure regulation under microcomputerized controller control, thereby has realized idle real-time in-situ balancing, has better guaranteed power supply quality; Voltage regulation coil of the present utility model divides into groups to be provided with neatly, realizes idle regular adjusting.Therefore, the two-way Reactive Power Automatic Regulating device of mesohigh of the present utility model has and is easy to realize, and is simple in structure, can realize idle reactive balance on the spot in real time, guarantees the advantage of power supply quality and equipment power grid security preferably.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the electrical block diagram of Fig. 1 degree of depth automatic coupling voltage regulator.
Embodiment
Referring to accompanying drawing, the two-way Reactive Power Automatic Regulating device of mesohigh, this device comprise the simple bus 2.1 of transformer, transformer secondary output bus 2.2, microcomputerized controller 7, the first voltage detecting instrument transformer 5, the second voltage detecting instrument transformer 1, current detecting instrument transformer 4, on-load tap-changing transformer 3, first control box 6, second control box 8, degree of depth automatic coupling voltage regulator 9, reactor group 10, capacitor group 11, capacitors in series reactor group 12, switch k1, k2.The described first voltage detecting instrument transformer 5 is connected with the simple bus 2.1 of described transformer respectively with the current detecting instrument transformer, the described second voltage detecting instrument transformer 1 is connected with described transformer secondary output bus 2.2 respectively with automatic coupling voltage regulator 9, the described first voltage detecting instrument transformer 5, be connected with the input of the described microcomputerized controller 7 respectively signal output part of described microcomputerized controller 7 of the detection signal output of the second voltage detecting instrument transformer 1 and described current detecting instrument transformer 4 is connected with second control box 8 with described first control box 6 respectively, first control box 6 connects control on-load tap-changing transformer 3, second control box 8 the 3rd output a3 connects the control end of degree of depth automatic coupling voltage regulator 9, the first output a1 connects the control end of the first switch k1, the second output a2 connects the control end of second switch k2, described Loading voltage regulator 3 is connected between simple bus 2.1 of described transformer and the transformer secondary output bus 2.2, described degree of depth automatic coupling voltage regulator 9 voltage output ends and described three-phase condenser bank 11, reactor group 10 is connected.Control the break-make of the first switch k1, second switch k2 by microcomputerized controller, thereby the character of regulating idle output realizes two-way reactive power compensation; Automatic coupling voltage regulator can be realized idle regular adjusting, it comprise an on load tap changer 101,, the first coil m10m8, the second coil m8m6, tertiary coil m6m4m, the 4th coil m4m2, the 5th coil m1m3, the 6th coil m3m5, the 7th coil m5m7, the 8th coil m7m9,10 contact m1～m10; Described load tap changer switch has 10 gear contact n1～n10,10 contacts of described voltage regulation coil and 10 gear contacts of described on load tap changer are connected, every adjacent two contacts are connected, and realization is idle to be adjusted to 11%, the mechanism 102 of described on load tap changer makes per two adjacent gear contacts connect under the control of described second control box 8, between the gear contact of described on load tap changer transition resistance is arranged; Described capacitors in series reactor group can effectively suppress overcurrent, capacitor for voltage protection group 11.
The two-way Reactive Power Automatic Regulating device of mesohigh of the present utility model is according to electric capacity and the idle relation that is directly proportional with voltage squared of inductance output, and it is idle to change output by the change terminal voltage.When two-way Reactive Power Automatic Regulating device of the present utility model moves, the first voltage detecting instrument transformer and current detecting instrument transformer are passed to microcomputerized controller with the voltage and current on the detected bus, microcomputerized controller is analyzed according to the requirement of the voltage and current of setting by the good program of inner setting and is judged, and then send first, second control box of commands for controlling, thereby realize voltage and idle adjusting.Microcomputerized controller is controlled the shutoff of the first switch k1, second switch k2, and K1 works when the needs capacitive reactive power compensates, and first switch disconnects when needing inductive reactive power compensation, second switch K2 closure.In degree of depth automatic coupling voltage regulator inside, can come regulating capacitor group and reactor group both end voltage by the position of regulating the shunting switch contact, and then realize adjusting idle output.When shunting switch n9, n10 short circuit, the automatic coupling voltage regulator output voltage is the highest, exports idle maximum; When shunting switch n1, n2 short circuit, the automatic coupling voltage regulator output voltage is minimum, exports idle minimumly, and voltage is 35% of primary voltage, idlely is output as 12% of former idle output; Voltage is 48% of primary voltage when n2, n3 short circuit, idlely is output as 23% of former idle output; Voltage is 58% of primary voltage when n3, n4 short circuit, idlely is output as 34% of former idle output; Voltage is 67% of primary voltage when n4, n5 short circuit, idlely is output as 45% of former idle output; Voltage is 75% of primary voltage when n5, n6 short circuit, idlely is output as 56% of former idle output; When voltage is the primary voltage short circuit when n6, n7 short circuit 82% of voltage, idlely be output as 67% of former idle output; Be 88% of primary voltage when n7, n8 short circuit, idlely be output as 78% of former idle output; Voltage is 94% of primary voltage when n8, n9 short circuit, idlely is output as 89% of former idle output; Voltage was 100% of primary voltage when voltage was the primary voltage short circuit when n9, n10 short circuit, idlely was output as 100% of former idle output.The short circuit situation of the gear contact of conversion shunting switch, the terminal voltage that makes capacitor and reactor group that can be convenient, flexible is regulated in the scope of 35%～100%U, and idle adjusting at 12% ~ 100%Q remains in the scope of setting the system power factor.When the system voltage lifting makes busbar voltage defective, the signal input microcomputerized controller that reflects the voltage transformer B of this state, microcomputerized controller computing by analysis sends instruction to control box A, finish the pressure regulation action of on-load tap-changing transformer by control box A, adjust its output voltage, guarantee that voltage is qualified.
Claims (2)
1. two-way Reactive Power Automatic Regulating device of mesohigh, this device comprises the simple bus of transformer (2.1), transformer secondary output bus (2.2), microcomputerized controller (7), the first voltage detecting instrument transformer (5), the second voltage detecting instrument transformer (1), current detecting instrument transformer (4), on-load tap-changing transformer (3), first control box (6), second control box (8), degree of depth automatic coupling voltage regulator (9), reactor group (10) and capacitor group (11), capacitors in series reactor group (12), first switch (k1), second switch (k2); It is characterized in that, the described first voltage detecting instrument transformer (5) is connected with the simple bus of described transformer (2.1) respectively with current detecting instrument transformer (4), the described second voltage detecting instrument transformer (1) is connected with described transformer secondary output bus (2.2) respectively with degree of depth automatic coupling voltage regulator (9), the described first voltage detecting instrument transformer (5), the detection signal output of the second voltage detecting instrument transformer (1) and described current detecting instrument transformer (4) is connected with the input of described microcomputerized controller (7) respectively, the signal output part of described microcomputerized controller (7) respectively with described first control box (6), second control box (8) is connected, first control box (6) connects control on-load tap-changing transformer (3), the 3rd output (a3) of second control box (8) connects the control end of degree of depth automatic coupling voltage regulator (9), first output (a1) connects the control end of first switch (k1), and second output (a2) connects the control end of second switch (k2); Described on-load tap-changing transformer (3) is connected between simple bus of described transformer (2.1) and the transformer secondary output bus (2.2), described degree of depth automatic coupling voltage regulator (9) voltage output end is connected with capacitor group (11) by first switch (k1), is connected with reactor group (10) by second switch (k2).
2. the two-way Reactive Power Automatic Regulating device of mesohigh according to claim 1 is characterized in that, described degree of depth automatic coupling voltage regulator (9) comprises an on load tap changer (101), eight sections voltage regulation coils, 10 contact m1～m10; Described load tap changer switch has 10 gear contact n1～n10,10 gear contact correspondences of 10 contacts of described voltage regulation coil and described on load tap changer are connected, every adjacent two contacts are connected, and realization is idle to be adjusted to 11%, the mechanism of described on load tap changer (102) makes per two adjacent gear contacts connect under the control of described second control box (8), between the gear contact of described on load tap changer transition resistance is arranged; Described eight sections voltage regulation coils comprise first coil (m10m8), second coil (m8m6), tertiary coil (m6m4m), the 4th coil (m4m2), the 5th coil (m1m3), the 6th coil (m3m5), the 7th coil (m5m7), the 8th coil (m7m9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200399929U CN201230214Y (en) | 2008-07-18 | 2008-07-18 | Medium and high voltage bidirectional reactive automatic regulating apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200399929U CN201230214Y (en) | 2008-07-18 | 2008-07-18 | Medium and high voltage bidirectional reactive automatic regulating apparatus |
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| CN201230214Y true CN201230214Y (en) | 2009-04-29 |
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| CNU2008200399929U Expired - Fee Related CN201230214Y (en) | 2008-07-18 | 2008-07-18 | Medium and high voltage bidirectional reactive automatic regulating apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103329385A (en) * | 2011-01-31 | 2013-09-25 | 阿尔斯通技术有限公司 | On-load tap changer control method, excitation control system carrying out said control method and power excitation chain |
| CN103457270A (en) * | 2012-05-31 | 2013-12-18 | 黄留欣 | Central dynamic reactive compensation device for transformers |
| CN103762603A (en) * | 2014-01-23 | 2014-04-30 | 安徽华正电气有限公司 | Bothway reactive voltage adjusting device |
| CN114300244A (en) * | 2022-01-06 | 2022-04-08 | 北京东方计量测试研究所 | Two-stage error compensation SCOTT voltage transformation device |
-
2008
- 2008-07-18 CN CNU2008200399929U patent/CN201230214Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103329385A (en) * | 2011-01-31 | 2013-09-25 | 阿尔斯通技术有限公司 | On-load tap changer control method, excitation control system carrying out said control method and power excitation chain |
| CN103329385B (en) * | 2011-01-31 | 2015-12-02 | 阿尔斯通技术有限公司 | On-load tap changer control method, the excitation control system performing described control method and power drive chain |
| US11016517B2 (en) | 2011-01-31 | 2021-05-25 | Alstom Technology Ltd | On-load tap-changer control method, excitation control system carrying out said control method and power excitation chain |
| CN103457270A (en) * | 2012-05-31 | 2013-12-18 | 黄留欣 | Central dynamic reactive compensation device for transformers |
| CN103762603A (en) * | 2014-01-23 | 2014-04-30 | 安徽华正电气有限公司 | Bothway reactive voltage adjusting device |
| CN114300244A (en) * | 2022-01-06 | 2022-04-08 | 北京东方计量测试研究所 | Two-stage error compensation SCOTT voltage transformation device |
| CN114300244B (en) * | 2022-01-06 | 2023-12-19 | 北京东方计量测试研究所 | Double-stage error compensation SCOTT transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20110718 |