CN201435609Y - Constant-volume adjustable reactive power compensation device - Google Patents
Constant-volume adjustable reactive power compensation device Download PDFInfo
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- CN201435609Y CN201435609Y CN2009200742097U CN200920074209U CN201435609Y CN 201435609 Y CN201435609 Y CN 201435609Y CN 2009200742097 U CN2009200742097 U CN 2009200742097U CN 200920074209 U CN200920074209 U CN 200920074209U CN 201435609 Y CN201435609 Y CN 201435609Y
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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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Abstract
A constant-volume adjustable reactive power compensation device comprises a controller, a capacitor group, a high-voltage potential transformer, a low-voltage potential transformer, a high-voltage current transformer, a low-voltage current transformer, a reactive power compensation voltage regulator, and a system main transformer, wherein, the high-voltage potential transformer and the high-voltage current transformer are connected with a high voltage side bus respectively; the output end of the high-voltage current transformer is connected with the controller; one way at the output end of thehigh-voltage current transformer is connected with the controller directly, and the other way thereat is connected with the system main transformer and then connected to the controller; the input ends of the low-voltage potential transformer and the low-voltage current transformer are connected to a bus on a low voltage side; the output end of the low-voltage potential transformer is connected tothe controller; the output end of the low-voltage current transformer is connected to the other interface of the controller; the reactive power compensation voltage regulator provided with two outputinterfaces is arranged in the low voltage side bus which is connected with the low-voltage potential transformer and the low-voltage current transformer; one of the output interfaces of the reactivepower compensation voltage regulator is connected to the controller; the other end of the output interface of the reactive power compensation voltage regulator is connected to a reactive power compensation capacitor; and one output interface of the system main transformer is connected to the bus at the low voltage side.
Description
Technical field
The utility model relates to a kind of reactive power compensator, and especially a kind of the grade held adjustable reactive-load compensation equipment.
Background technology
Habitual at present voltage and reactive power compensation device comes regulating system voltage and power factor by adopting autotransformer on-load voltage regulation change capacitor group end output voltage thereby change idle output capacity.This device does not have overvoltage in adjusting, capacitor does not have and discharges and recharges in the adjustment process, so it can realize timely adjustment, and guarantees that capacitor operates in below the capacitor rated voltage forever, guarantees that capacitor is safe in utilization, increases the service life.Capacitor wherein fixedly access does not divide into groups, and its output capacity can be regulated continuously.
In addition, it is adjustable that the voltage power-less intelligent compensation device of producing adopts nine grades of equipressures at present, range of regulation: (60～100) %Un, the capacity of can realizing divides nine grades of outputs from (100-36) %Qe, its weak point is that every grade of employing is isobaric adjustable, and corresponding every grade of reactive capability is unequal, and adjustment process is non-linear, especially when high tap position between every grade volume change bigger, be not easy to control and the voltage adjustment.
The utility model content
The purpose of the present utility model: be intended to propose a kind of the grade and hold adjustable reactive-load compensation equipment, make regulating effect better, make things convenient for controller to realize control according to idle amount fully, rather than control, stopped the throw in-of oscillation phenomenon according to power factor (PF).
This grade held adjustable reactive-load compensation equipment, comprise controller, the capacitor group, high voltage potential transformer, high-tension current inductor, the low voltage voltage instrument transformer, low-voltage current mutual inductor, reactive power compensation voltage regulator and system's main transformer, it is characterized in that: high voltage potential transformer wherein, high-tension current inductor links to each other with high-voltage side bus respectively, and the output of high-tension current inductor directly is connected with controller A end, the output of described high-tension current inductor is divided into two-way, a road direct the end with controller B wherein is connected, and access controller C held after another road output connected system's main transformer; Described low voltage voltage instrument transformer, the input of low-voltage current mutual inductor connects low-pressure side bus, the direct access controller D end of the output of low voltage voltage instrument transformer wherein, another interface of the direct access controller of output of low-voltage current mutual inductor, connecting the low voltage voltage instrument transformer simultaneously, be provided with a reactive power compensation voltage regulator that is connected with this section low-pressure side bus in the low-voltage current mutual inductor low-pressure side bus, this reactive power compensation voltage regulator is provided with two output interfaces, the E interface of the direct access controller of one of them output interface, its other end connects a reactive-load compensation capacitor; In addition, an output interface of described system main transformer inserts on the low-pressure side bus that is positioned between reactive power compensation voltage regulator and low-voltage current mutual inductor.
Described reactive power compensation voltage regulator has three iron cores, and each iron core has a main coil and a voltage regulation coil, and wherein voltage regulation coil has 8 sections coils, 9 corresponding 9 gears of tap.
According to above technical scheme propose etc. the adjustable capacity and pressure regulating transformer that requires of appearance, its voltage stepping guarantees to upgrade and lower category according to square linear relation of reactive capability and voltage, and reactive capability changes is identical, avoided between each grade change in voltage identical, idle serious different situation, make regulating effect better, make things convenient for controller to realize control according to idle amount fully, rather than control, stopped the throw in-of oscillation phenomenon according to power factor (PF).
Description of drawings
Fig. 1 is a voltage power-less intelligent regulating device structural representation;
Fig. 2 is voltage power-less control nine districts figure;
Fig. 3 is reactive power compensation voltage regulator and shunting switch winding diagram.
Among the figure: 1-high-voltage side bus 2-high side voltage detects the 3-high-tension current inductor 4-main transformer 5-of system reactive power compensation voltage regulator 6-low voltage voltage instrument transformer 7-compensation capacitors 8-controller 9-low-pressure side bus 10-low-voltage current mutual inductor
Embodiment
Adjustable reactive-load compensation equipment is held in waiting as shown in Figure 1, comprise controller 8, capacitor group 7, high voltage potential transformer 2, high-tension current inductor 3, low voltage voltage instrument transformer 6, low-voltage current mutual inductor 10, reactive power compensation voltage regulator 5 and system's main transformer 4, it is characterized in that: wherein high voltage potential transformer 2, high-tension current inductor 3 links to each other with high-voltage side bus 1 respectively, and the output of high-tension current inductor 3 directly is connected with controller 8A end, the output of described high-tension current inductor 3 is divided into two-way, a road direct the end with controller 8B wherein is connected, and another road output connects system's main transformer 4 back access controller 8C and holds; Described low voltage voltage instrument transformer 6, the input of low-voltage current mutual inductor 10 connects low-pressure side bus 9, the direct access controller 8D end of the output of low voltage voltage instrument transformer 6 wherein, another interface of the direct access controller 8 of the output of low-voltage current mutual inductor 10, connecting low voltage voltage instrument transformer 6 simultaneously, be provided with a reactive power compensation voltage regulator 5 that is connected with this section low-pressure side bus in low-voltage current mutual inductor 10 low-pressure side bus, this reactive power compensation voltage regulator 5 is provided with two output interfaces, the E interface of the direct access controller 8 of one of them output interface, its other end connect a reactive-load compensation capacitor 7; In addition, an output interface of described system main transformer 4 inserts on the low-pressure side bus 9 that is positioned at 10 of reactive power compensation voltage regulator 5 and low-voltage current mutual inductors.
Described reactive power compensation voltage regulator 5 has three iron cores, and each iron core has a main coil and a voltage regulation coil, and wherein voltage regulation coil has 8 sections coils, 9 corresponding 9 gears of tap.
These operation principles of holding adjustable reactive-load compensation equipment are as follows:
The voltage power-less intelligent regulating device is according to formula Q=2 π fCU2, idle output and voltage squared are proportional, change capacitance terminal voltage by adjuster, reach and change idle output, the control of voltage and reactive comprehensive be with voltage and idle be two differentiation amounts, guaranteeing in the voltage acceptable ranges, to realize reactive balance simultaneously.Voltage of determining and idle upper and lower limit are being divided into 9 districts by voltage and the idle plane that constitutes.The voltage upper and lower limit determines according to the voltage acceptability limit, and idle upper and lower limit is according to every grade of capacitance, capacitance deviation and idle in a basic balance and keep the metastable principle of switching to determine.
The division of voltage power-less control 9 district figure is as follows:
1,2,3,4,5,6,7,8 districts are regulatory region, and 9 districts are the Operational Zone.
| Interval | Voltage and idle | Control law | |
| 1. | Voltage is on the low side, idle deficiency | Throw electric capacity earlier, no electric capacity can be thrown.Boost | |
| 2. | Voltage is normal, idle deficiency | Throw |
|
| 3. | Voltage is higher, idle deficiency | Elder generation's step-down, electric capacity is thrown in the back, and voltage is preferential during the voltage deep |
|
| 4. | Voltage is higher, and is idle normal | Step-down forces to cut electric capacity during the voltage deep |
|
| 5. | Voltage is higher, idle surplus | Cut electric capacity, no electric capacity can be cut step-down | |
| 6. | Voltage is normal, idle surplus | Cut |
|
| 7. | Voltage is on the low side, idle surplus | Boost earlier, after cut electric capacity.Voltage was preferential when voltage was the most high- |
|
| 8. | Voltage is on the low side, and is idle normal | Boost earlier, when voltage is the most high-grade, force to throw |
|
| 9. | Voltage is normal, and is idle normal | The object run district does not need to regulate |
Because idle adjusting limit value is not consider the fixed edge boundary line of idle adjusting to voltage influence, cause the increase of adjusting number of times of autotransformer on load tap changer and the fluctuation of voltage easily, influenced by voltage status so idle upper limit value and lower limit value need be changed into, and serve a smeared out boundary of voltage-regulation within the specific limits.Effectively reduce the adjusting number of times of on load tap changer, and reduced the fluctuation of voltage under the constant situation of idle adjusting number of times and reactive power compensation effect keeping, make the voltage voltage that more is near the mark.
During this voltage power-less intelligent regulating device operation, high and low pressure side voltage transformer TV summation current transformer TA detects high and low pressure side voltage and current signal constantly and is transferred to VQC, VQC sets in advance program according to nine district figure and controls, when COS Φ is higher than set point, VQC is sent the step-down order, reduce capacitor group terminal voltage, reduce the idle output of capacitor group, thereby reduce COS Φ; Otherwise, still.When main transformer voltage was lower than upper voltage limit, VQC was sent the order of boosting, and regulated the main transformer shunting switch and boosted; Otherwise, still.According to constant value control voltage bound, idle according to optimum way control.
Autotransformer generally adopts the mode of end pressure regulation in the capacity regulator, have three iron cores, each iron core has a main coil and a voltage regulation coil, wherein voltage regulation coil has 8 sections coils, 9 corresponding 9 gears of tap, the effective turn of voltage regulation coil work, can change control by on load tap changer gear contact, thereby voltage regulator voltage output, in the time of the 1st grade the voltage regulator output voltage minimum be 60%Ue, the voltage regulator output voltage is up to 100%Ue in the time of the 9th grade, corresponding range of regulation is 60%～100%Ue, corresponding capacity transfer scope is 36%～100%Qe, adopts nine grades to wait appearance adjustable, has 8 sections voltage regulation coils, therefore every grade of capacity is Q=(100%-36%) Qe/8, every grade of capacity of voltage regulator is fixed, can instead release every grade of voltage, relations such as electric current are designed regulating autotransformer.The voltage power-less adjusting device, control on load tap changer gear change situation that can be convenient, flexible makes the capacitor group wait appearance adjustable continuously between 9 grades, guarantees that system voltage and power factor remain in the setting range.
Claims (2)
1, a kind of grade held adjustable reactive-load compensation equipment, comprise controller (8), capacitor group (7), high voltage potential transformer (2), high-tension current inductor (3), low voltage voltage instrument transformer (6), low-voltage current mutual inductor (10), reactive power compensation voltage regulator (5) and system's main transformer (4), it is characterized in that: high voltage potential transformer (2) wherein, high-tension current inductor (3) links to each other with high-voltage side bus (1) respectively, and the output of high-tension current inductor (3) directly is connected with controller (8) A end, the output of described high-tension current inductor (3) is divided into two-way, a road direct the end with controller (8) B wherein is connected, and another road output connects back access controller (8) C of system constant (4) and holds; Described low voltage voltage instrument transformer (6), the input of low-voltage current mutual inductor (10) connects low-pressure side bus (9), the direct access controller of output (8) the D end of low voltage voltage instrument transformer (6) wherein, another interface of the direct access controller of output (8) of low-voltage current mutual inductor (10), connecting low voltage voltage instrument transformer (6) simultaneously, be provided with a reactive power compensation voltage regulator (5) that is connected with this section low-pressure side bus in low-voltage current mutual inductor (10) low-pressure side bus, this reactive power compensation voltage regulator (5) is provided with two output interfaces, the E interface of the direct access controller of one of them output interface (8), its other end connect a reactive-load compensation capacitor (7); In addition, an output interface of described system constant (4) inserts on the low-pressure side bus (9) that is positioned between reactive power compensation voltage regulator (5) and low-voltage current mutual inductor (10).
2, the adjustable reactive-load compensation equipment of holding such as a kind of as claimed in claim 1, it is characterized in that: described reactive power compensation voltage regulator (5) has three iron cores, each iron core has a main coil and a voltage regulation coil, and wherein voltage regulation coil has 8 sections coils, 9 corresponding 9 gears of tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200742097U CN201435609Y (en) | 2009-07-03 | 2009-07-03 | Constant-volume adjustable reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200742097U CN201435609Y (en) | 2009-07-03 | 2009-07-03 | Constant-volume adjustable reactive power compensation device |
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| Publication Number | Publication Date |
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| CN201435609Y true CN201435609Y (en) | 2010-03-31 |
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| CN2009200742097U Expired - Fee Related CN201435609Y (en) | 2009-07-03 | 2009-07-03 | Constant-volume adjustable reactive power compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651549A (en) * | 2012-04-28 | 2012-08-29 | 沈阳华岩电力技术有限公司 | Self-optimization multi-level voltage reactive power control method |
| CN103825283A (en) * | 2014-03-06 | 2014-05-28 | 国家电网公司 | AVC (automatic voltage control) remote control method based on parallel capacitor reactive grouping |
| CN106229993A (en) * | 2016-09-28 | 2016-12-14 | 山东民生电气设备有限公司 | A kind of distribution transformer voltage power-less structure adjusting device |
| CN107465201A (en) * | 2017-10-12 | 2017-12-12 | 济南爱迪电气设备有限公司 | A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact |
-
2009
- 2009-07-03 CN CN2009200742097U patent/CN201435609Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651549A (en) * | 2012-04-28 | 2012-08-29 | 沈阳华岩电力技术有限公司 | Self-optimization multi-level voltage reactive power control method |
| CN102651549B (en) * | 2012-04-28 | 2014-05-07 | 沈阳华岩电力技术有限公司 | Self-optimization multi-level voltage reactive power control method |
| CN103825283A (en) * | 2014-03-06 | 2014-05-28 | 国家电网公司 | AVC (automatic voltage control) remote control method based on parallel capacitor reactive grouping |
| CN103825283B (en) * | 2014-03-06 | 2016-08-17 | 国家电网公司 | A kind of AVC remote control method based on the idle packet of shnt capacitor |
| CN106229993A (en) * | 2016-09-28 | 2016-12-14 | 山东民生电气设备有限公司 | A kind of distribution transformer voltage power-less structure adjusting device |
| CN107465201A (en) * | 2017-10-12 | 2017-12-12 | 济南爱迪电气设备有限公司 | A kind of more subdivided capacitor formula High Voltage and Passive Automatic Compensation Devices of compact |
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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 |
Granted publication date: 20100331 Termination date: 20160703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |