CN200969518Y - Transformer station voltage front-and-back reactive automatic regulation device - Google Patents
Transformer station voltage front-and-back reactive automatic regulation device Download PDFInfo
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- CN200969518Y CN200969518Y CNU2006201373560U CN200620137356U CN200969518Y CN 200969518 Y CN200969518 Y CN 200969518Y CN U2006201373560 U CNU2006201373560 U CN U2006201373560U CN 200620137356 U CN200620137356 U CN 200620137356U CN 200969518 Y CN200969518 Y CN 200969518Y
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- transformer
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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
The utility model relates to a transformer substation voltage forward-inverse reactive power regulation device, mainly consisting of a microcomputer controller, a voltage transformer, a current transformer, an operation box, an on-load regulating transformer, a voltage regulator, and a capacitor. The device is characterized in that a voltage transformer A and the current transformer connect with the transformer primary generatrix respectively, a voltage transformer B and the voltage transformer connect with secondary generatrix respectively, the voltage transformer A, the voltage transformer B, and the signal detective output terminal of the current transformer connect with the input terminal of the microcomputer controller respectively, the signal output terminal of the microcomputer controller connects with an operation box A and an operation box B respectively, the output terminal of the voltage regulator connects with a shift switch which shifts between a capacity compensation branch and a perception compensation branch. The utility model is suitable for the regulation of the reactive power output of the railroad power transmission network and the other power network, with line loss reduced and the purpose of saving power and protecting power network reached.
Description
Technical field
The utility model belongs to a kind of transformer substation voltage, forward and reverse reactive-load adjusting device, be applicable to all kinds of transformer stations in 10KV to the 220KV power supply network, the on-load tap-changing transformer automatic Regulation, the terminal voltage of compensation capacitors and reactor is regulated automatically, switch capacitive compensation branch road and perception compensation branch road in good time, improve power supply quality and saves energy.
Background technology
Along with rapid growth of economy, power load constantly increases, and usually causes the electric load breach, and serious day by day, and quality of voltage constantly worsens.The power system stability system voltage improves power factor, reduces line loss, can increase power supply capacity under the prerequisite that does not increase the power supply construction, improves the quality of power supply.And the adjusting of electric network reactive-load is wherein very important means.At present, many technology occurred, but still come with some shortcomings, can not satisfy the needs of various power stations electrical network about power station voltage and Reactive Power Automatic Regulating.Therefore, it is more reasonable need to propose structure, operates more flexibly, and it is more accurate to control, the better voltage power-less automatic regulating equipment of energy-saving effect.
The utility model content
The utility model is at the problems referred to above, the forward and reverse Reactive Power Automatic Regulating device of a kind of transformer substation voltage is proposed, the capacitor of this device, reactor grouping switching are for one-time fixing input, the terminal voltage that changes capacitor and reactor by voltage regulator reaches the purpose that changes compensation capacity, switch inductive reactive power compensation branch road and capacitive reactive power compensation branch road by the single-pole double throw isolating switch, solved overvoltage in traditional switching, technical problem such as shove, changing lags behind is adjusted to timely adjustment, can reduce line loss significantly, improve power factor, the conservation of power energy.
The purpose of this utility model is achieved through the following technical solutions: the forward and reverse reactive-load adjusting device of a kind of transformer substation voltage, mainly comprise: microcomputerized controller, voltage transformer, current transformer, control box, on-load tap-changing transformer, voltage regulator, capacitor, it is characterized in that: on-load tap-changing transformer is connected between distribution input high voltage bus and the user's low-voltage bus bar, voltage transformer A summation current transformer is connected on the simple bus of described on-load tap-changing transformer, voltage transformer B and voltage regulator are connected on the secondary bus of described on-load tap-changing transformer, the detection signal output of described voltage transformer A and voltage transformer B and current transformer is connected with the input of described microcomputerized controller respectively, the signal output part of microcomputerized controller respectively with control box A, control box B connects, and control box A realizes operation to the on-load tap-changing transformer shunting switch by the control signal of controller; Control box B realizes control to the voltage regulator shunting switch by the signal of controller; Described voltage regulator output is connected with a diverter switch, and this diverter switch is switched between capacitive compensation branch road and perception compensation branch road, and series reactor and capacitor are formed the capacitive compensation branch road, and shunt reactor is formed perception compensation branch road.
Transforming plant voltage reactive adjusting device of the present utility model is according to formula Q=2 π FCU
2And Q=U
2The principle of/2 π FL, i.e. the relation that capacitive compensation branch road and the output of perception compensation branch road is directly proportional with voltage changes idle output variable by the terminal voltage that changes each branch road.When transforming plant voltage reactive automatic regulating equipment of the present utility model moves, voltage detecting instrument transformer and current detecting instrument transformer send the voltage and current signal on the detected bus to microcomputerized controller, microcomputerized controller is by the working procedure of inner setting, analyze and judge according to the requirement of voltage of setting and power factor, and then send control command.Control its switch is switched capacitive compensation branch road or perception compensation branch road, and passes through the shunting switch of control box B control voltage regulator, changes the terminal voltage of described compensation branch road.As cos Φ (power factor) when being lower than requirement, microcomputerized controller sends the instruction of the compensation wire-end voltage that raises and gives control box B; The terminal voltage of compensation branch road is raise, improve idle output, thereby improve cos Φ; When cos Φ was higher than requirement, microcomputerized controller then sent the instruction that reduces a compensation wire-end voltage, reduces idle output, thereby reduced cos Φ, and the system power factor is remained in the scope of setting.
When the system voltage lifting makes busbar voltage defective, voltage transformer a-signal input microcomputerized controller, microcomputerized controller computing by analysis send instruction to control box A, finish the action of the tap changer of on-load tap-changing transformer by control box A, adjust its output voltage, guarantee that voltage is qualified.
The utlity model has following advantage:
(1) owing to having adopted microcomputerized controller, can be according to the idle parameter of system voltage, the guaranteed output factor is in being provided with scope, and the best, the line loss minimum.
(2) capacitor is fixing inserts, and it is idle not adopt the switching capacitance mode to regulate, but according to Q=2 π FCU
2Change the capacitor terminal voltage and regulate idle exerting oneself, satisfy system's load or burden without work requirement.
(3) reactor is fixing inserts, and it is idle not adopt the grouping switching reactor to regulate, but according to Q=U
2/ 2 π FL change the reactor terminal voltage and regulate idle exerting oneself, and satisfy system's load or burden without work requirement.
(4) because pressure regulation process capacitor or reactor do not break away from electrical network all the time, therefore no charge and discharge phenomena does not have the time-delay of adjusting, can realize timely adjustment.And do not have overvoltage and shoving in the pressure regulation process, and make system safer, prolong its useful life
(5) can adopt capacitor or reactor low-voltage to close a floodgate, effectively reduce of the impact of capacitor inrush phenomenon system.
(6) in equipment running process,, controller allow system voltage operate in the acceptability limit thereby carrying out Comprehensive Control to capacitance switch, electronic disconnecting link, voltage power-less adjuster according to change in voltage in good time.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further: embodiment: with reference to accompanying drawing, the forward and reverse reactive-load adjusting device of a kind of transformer substation voltage, mainly comprise: microcomputerized controller, voltage transformer, current transformer, control box, on-load tap-changing transformer, voltage regulator, capacitor, on-load tap-changing transformer 8 is connected between distribution input high voltage bus 5 and the user's low-voltage bus bar 4, this bus is three-phase, voltage transformer A2 summation current transformer 7 is connected on the simple bus of described on-load tap-changing transformer, voltage transformer B3 and voltage regulator 10 are connected on the secondary bus of described on-load tap-changing transformer, the detection signal output of voltage transformer A and voltage transformer B and current transformer is connected with the input of described microcomputerized controller respectively, the signal output part of microcomputerized controller 1 is connected with control box B9 with control box A6 respectively, control box A connects the control on-load tap-changing transformer, control box B connects the control voltage regulator, described voltage regulator output is connected with diverter switch 11, diverter switch of the present utility model is the single-pole double throw isolation switch, this single-pole double throw isolation switch is connected to capacitive compensation branch road and perception compensation branch road, and series reactor L1 and capacitor C form capacitive compensation branch road 12; Shunt reactor L2 forms perception compensation branch road 13.The product of present embodiment has passed through the check at the complete control device quality testing of Ministry of Power Industry's reactive power compensation center.
Claims (1)
1, the forward and reverse reactive-load adjusting device of a kind of transformer substation voltage, mainly comprise: microcomputerized controller, voltage transformer, current transformer, control box, on-load tap-changing transformer, voltage regulator, capacitor, it is characterized in that: described on-load tap-changing transformer (8) is connected between distribution input high voltage bus (5) and the user's low-voltage bus bar (4), voltage transformer A (2) summation current transformer (7) is connected on the simple bus of described on-load tap-changing transformer, voltage transformer B (3) and voltage regulator (10) are connected on the secondary bus of described on-load tap-changing transformer, the detection signal output of described voltage transformer A and voltage transformer B and current transformer is connected with the input of described microcomputerized controller respectively, the signal output part of microcomputerized controller is connected with control box B (9) with control box A (6) respectively, and control box A realizes operation to the on-load tap-changing transformer shunting switch by the control signal of controller; Control box B realizes control to the voltage regulator shunting switch by the control signal of controller; Described voltage regulator output is connected with diverter switch (11), and this diverter switch is switched between capacitive compensation branch road and perception compensation branch road, and series reactor L1 and capacitor C form capacitive compensation branch road (12); Shunt reactor L2 forms perception compensation branch road (13);
Described microcomputerized controller is by receiving and analyze the data that transmit from the voltage transformer summation current transformer, and according to predefined reactive factor standard, in time send control signal, realize the voltage-regulation of on-load tap-changing transformer and voltage regulator by control box, switch capacitive compensation branch road and perception compensation branch road by diverter switch, change the terminal voltage of changing capacitive compensation branch road and perception compensation branch road by voltage regulator and change reactive compensation capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201373560U CN200969518Y (en) | 2006-09-22 | 2006-09-22 | Transformer station voltage front-and-back reactive automatic regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201373560U CN200969518Y (en) | 2006-09-22 | 2006-09-22 | Transformer station voltage front-and-back reactive automatic regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200969518Y true CN200969518Y (en) | 2007-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201373560U Expired - Fee Related CN200969518Y (en) | 2006-09-22 | 2006-09-22 | Transformer station voltage front-and-back reactive automatic regulation device |
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| CN (1) | CN200969518Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148506A (en) * | 2011-05-05 | 2011-08-10 | 江苏现代电力电容器有限公司 | Reactive control system for intelligent power distribution lines |
| CN103762603A (en) * | 2014-01-23 | 2014-04-30 | 安徽华正电气有限公司 | Bothway reactive voltage adjusting device |
| CN104124697A (en) * | 2014-08-12 | 2014-10-29 | 国网浙江奉化市供电公司 | Reactive automatic compensation system |
| 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 |
-
2006
- 2006-09-22 CN CNU2006201373560U patent/CN200969518Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148506A (en) * | 2011-05-05 | 2011-08-10 | 江苏现代电力电容器有限公司 | Reactive control system for intelligent power distribution lines |
| CN103762603A (en) * | 2014-01-23 | 2014-04-30 | 安徽华正电气有限公司 | Bothway reactive voltage adjusting device |
| CN104124697A (en) * | 2014-08-12 | 2014-10-29 | 国网浙江奉化市供电公司 | Reactive automatic compensation system |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SNTA ENERGY-SAVING ELECTRIC CO., LTD Free format text: FORMER NAME: BEIJING SNTA ELECTRIC POWER TECHNOLOGY CO., LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100085, A, building 9, Ka Wah building, 901 3rd Street, Beijing, Haidian District Patentee after: Beijing Snta Energy-Saving Electrical Co., Ltd. Address before: 100085, A, building 9, Ka Wah building, 901 3rd Street, Beijing, Haidian District Patentee before: Beijing Snta Electric Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20150922 |
|
| EXPY | Termination of patent right or utility model |