CN201868890U - Intelligent compensation device for low-voltage follower - Google Patents
Intelligent compensation device for low-voltage follower Download PDFInfo
- Publication number
- CN201868890U CN201868890U CN2010206308174U CN201020630817U CN201868890U CN 201868890 U CN201868890 U CN 201868890U CN 2010206308174 U CN2010206308174 U CN 2010206308174U CN 201020630817 U CN201020630817 U CN 201020630817U CN 201868890 U CN201868890 U CN 201868890U
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- switch
- capacitor
- phase
- box body
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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
- 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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses an intelligent compensation device for a low-voltage follower, which comprises a box body, wherein the box body is provided with a front door; a rainproof shelter and a heat-insulating layer for resisting freezing and sunning are arranged at the top of the box body; ventilation holes are reserved at two sides of the box body; a secondary incoming hole and a primary incoming hole are arranged at the bottom of the box body; and an intelligent reactive compensation controller, a main incoming switch of the intelligent compensation device for the low-voltage follower, a block switch, a composite switch of a switched capacitor, a capacitor and a lightning arrester are arranged in the box body. The main incoming switch is connected with an incoming power supply; the lightning arrester is arranged at the incoming power supply end; the block switch is connected with the main incoming switch; the composite switch of the switched capacitor is connected with the block switch; the capacitor is arranged at the lower part in the box body; and a plurality of capacitor switching indication lamps are arranged on the box body. According to the device, by adopting three-phase current and voltage, the reactive power of each phase is calculated and a capacitor set for switching split phase compensation or three-phase compensation is judged according to the reactive power of each phase.
Description
Technical field
The utility model relates on a kind of novel reactive power compensator, the especially post intelligent type low-voltage with the device compensation arrangement.
Background technology
The existing low pressure of China adopts plain edition controller control capacitor grouping switching with the device reactive power compensator more, the switch more options combination switch of switched capacitor, the form that the mode of connection of capacitor group adopts the delta connection three-phase to compensate altogether more.The sampling physical quantity of controller is: a phase current, two phase voltages in addition.The foundation that the controller switching is judged is a power factor, but controller Control Parameter target setting power factor upper and lower bound value, when power factor value that controller detects is in the target power factor scope that controller is set, controller is failure to actuate, when the power factor of controller detection is higher or lower than the target power factor of controller setting, controller sends the instruction of throwing capacitor or cutting capacitor, and the action of control combination switch drops into or withdraw from the capacitor group.Sort controller does not have the function of on-line monitoring and wireless telecommunications, do not have simultaneously the function of phase splitting compensation yet, when three-phase imbalance appears in the load of low-pressure side, controller can not carry out phase splitting compensation according to the load condition of every phase, three-phase capacitor can only be put into operation simultaneously, the phase overcompensation that effect after compensating like this can make, the phase undercompensation that has, overcompensation and undercompensation all can make the power factor of system reduce, total power factor does not reach user's requirement, so be difficult to reach the compensation effect that the user expects after this compensation arrangement is installed.
The utility model content
The purpose of this utility model is exactly for overcoming the deficiency that prior art exists, and provides a kind of intelligent type low-voltage with the device compensation arrangement.
The technical scheme that adopts is:
A kind of intelligent type low-voltage is with the device compensation arrangement, comprise casing, described casing has the Qianmen, the top of casing is provided with rain-proof shelter and antifreeze sun-proof thermal insulation layer, ventilation hole is left in the both sides of casing, bottom half offers secondary entrance hole and an entrance hole, is equiped with intelligent reactive power compensation controller, total input-wire switch, branch switch, switched capacitor combination switch, capacitor and lightning arrester in the described casing.Described total input-wire switch is connected with incoming power, lightning arrester is installed in the incoming power end, described branch switch is connected with the total input-wire switch, described switched capacitor combination switch is connected with the switch of grouping, described capacitor is installed in the bottom in the casing, is equiped with a plurality of capacitor switching indicator lights on the described casing.
The utility model is compared with the device compensation arrangement with existing low pressure can obtain following effect:
(1) this device sampling three-phase current three-phase voltage calculates the reactive power of each phase respectively, judges that according to the reactive power of every phase the switching phase splitting compensation still is the capacitor group of three-phase compensation.Can realize the isostatic compensation of three-phase.
(2) controller is to judge the foundation that drops into and excise capacitor with the reactive power, and the value switching of reference power factor, the compensation precision height.The transformer light hours are by adjusting the idle upper lower limit value of controller, the also accurate switching of control capacitor group, thus reach the compensation effect of expection.
(3) the capacitor group adopts star and angle scheme, thereby can realize mixed compensation.
(4) controller has communication function, can realize on-line monitoring and remote monitoring function.
(5) controller has record and memory function, the logout in the controller running can be got off.
(6) reactive power compensator has harmonic measure and Presentation Function, but the harmonic wave situation of on-line monitoring system.
The utility model can calculate the reactive power of each phase by adopting three-phase voltage, three-phase current, judges each mutually required reactive power situation according to reactive power, and capacitor group that can congenial phase realizes the phase splitting compensation of reactive power.Load for three-phase imbalance can make the reactive power of each phase reach balance according to its reactive power of reactive requirement phase splitting compensation of every phase, and the power factor of each phase reaches the compensation effect of expection.
The utlity model has wired and wireless communication function, can carry out communication, realize the teletransmission and the on-line monitoring function of data by intelligent controller and user's daemon software.
The data of the utility model collection have record and memory function, can write down and store 30 days integral point data.
The utility model also has harmonic measure and Presentation Function.
Description of drawings
Fig. 1 is the schematic appearance of the utility model casing.
The end view of Fig. 2 Fig. 1.
Fig. 3 is the upward view of Fig. 1.
Fig. 4 is the structural representation in the utility model casing.
Embodiment
See also Fig. 1 and Fig. 2, a kind of intelligent type low-voltage of the present utility model comprises casing 1 with the device compensation arrangement, casing 1 has Qianmen 2, the top of casing 1 is provided with rain-proof shelter 3 and antifreeze sun-proof thermal insulation layer 4, ventilation hole 5 is left in the both sides of casing 1, casing 1 bottom offers secondary entrance hole 8 and an entrance hole 9, is equiped with intelligent reactive power compensation controller 6, switched capacitor combination switch 12, capacitor 13 and lightning arrester 7 in the casing 1.Incoming power is introduced in the casing by total input-wire switch 10, switched capacitor combination switch 12 is connected with incoming power by branch switch 11, lightning arrester 7 is installed in the incoming power end, and capacitor 13 is installed in the bottom in the casing 1, is equiped with a plurality of capacitor switching indicator lights on the casing 1.
Total input-wire switch 10 is selected the breaker of plastic casing that breaking capacity is strong, unfailing performance is high for use, is the total input-wire mains switch of device, by breaker of plastic casing deciliter, can with the device power connection and disconnection.If device breaks down in running, then breaker of plastic casing has high breaking capacity, and electronic trip unit is threaded off, and makes device out of service from electrical network.
The branch switch 11 of device is selected miniature circuit breaker, when miniature circuit breaker along separate routes closes timesharing, can connect the capacitor group with every group of disjunction.When capacitor group along separate routes broke down, miniature circuit breaker disconnection along separate routes can be out of service with the capacitor group of fault, and do not influence the operation of other capacitor group.
Intelligent reactive power compensation controller 6 maximum output loops are 16 the tunnel, and compensation way is three-phase compensation (being total to benefit) or phase splitting compensation, can realize that also three-phase compensates and phase splitting compensation combines, the fixed benefit and the automatic mixed compensation mode that combines that compensates.Compensation Method Selection can be set by the panel button of controller.
The switching mode of intelligent reactive power compensation controller 6 has two kinds can select, i.e. Automatic Cycle switching and Automatic Optimal switching mode.
Intelligent reactive power compensation controller 6 also has DATA REASONING and Presentation Function, can measure frequency with the three-phase voltage of display system, three-phase current, three-phase activity coefficient, active power, reactive power, electrical network etc.;
The intelligent reactive power compensation controller can show three-phase voltage resultant distortion rate, three-phase current resultant distortion rate, calendar clock, the meritorious electric weight of current accumulative total, current accumulative total capacity of idle power, CT no-load voltage ratio, branch road number etc. in real time.
Intelligent reactive power compensation controller operating state shows: but the display power supply indicator light; Operating states such as hysteresis, overvoltage, leading, switching state show.
Intelligent reactive power compensation controller data writing function: cumulative data writing function, can write down the time of every month, the super upper limit of voltage deviation of every day and super lower limit accumulative total, energy shows and prints rate of qualified voltage and qualified cumulative time by the daemon software analysis, super upper limit rate of voltage and corresponding cumulative time, super lower limit rate of voltage and corresponding cumulative time.Integral point data recording function, the continuous measurement three-phase voltage per 30 minutes, each harmonic voltage aberration rate, each loop and total circuit three-phase current, neutral line current and unsymmetrical current, each harmonic current aberration rate, each loop three-phase activity coefficient and comprehensive power factor, each loop and total circuit active power, reactive power, current imbalance degree, the load factor of distribution transforming and frequency of electrical network mutually mutually with storing distribution transforming.The day operation data recording function calculates and stores each phase voltage of freezing maximum (little) value, each maximum phase current, comprehensive power factor maximum (little) value, active power maximum, reactive power maximum, day of each phase voltage every day continuously and gets over the cumulative time of the upper limit (lower limit) (the upward upper limit) (lower limit) operation, a statistics day compensating reactive power electric weight, day input electric capacity
Number, every day active energy aggregate-value, every day the reactive energy aggregate-value.
Intelligent controller has a moon statistics function, can add up every month voltage mean value, have a power failure constantly,
Meritorious electric weight of the time, every month (day) of the incoming call moment, voltage maximum/minimum value, current maxima and appearance and capacity of idle power.
The intelligent reactive power compensation controller has the harmonic wave monitoring function, can store the current first harmonics amplitude of the voltage fundamental amplitude of corresponding phase of the time of the time of maximum harmonic voltage aberration rate and corresponding phase, appearance, maximum harmonic current aberration rate and corresponding phase, appearance, maximum harmonic voltage aberration rate and 2～19 subharmonic voltage amplitudes, the corresponding phase of maximum harmonic current aberration rate and 2～19 subharmonic current amplitudes, the first-harmonic of each phase voltage electric current and 2～19 humorous wave amplitudes, the aberration rate of each phase voltage electric current in real time in real time.
Intelligent controller has communication (checking meter) function, can pass through independently USB interface, read all data by the electronics USB flash disk, also can carry out data acquisition by RS232/RS485 communication interface and background computer communication, also can carry out communication, thereby can realize the automation control of distribution by GPRS and cdma wireless communication modes and backstage.
The intelligent reactive power compensation controller has complete under-voltage protection, overvoltage protection, o-volt protection, open-phase protection, harmonic protection, zero-sequence current and crosses functions such as upscale protection, failure data protection.
Claims (1)
1. an intelligent type low-voltage is with the device compensation arrangement, comprise casing, described casing has the Qianmen, the top of casing is provided with rain-proof shelter and antifreeze sun-proof thermal insulation layer, ventilation hole is left in the both sides of casing, bottom half offers secondary entrance hole and an entrance hole, it is characterized in that being equiped with in the described casing intelligent reactive power compensation controller, intelligent type low-voltage is with the total input-wire switch of device compensation arrangement, the switch of grouping, the switched capacitor combination switch, capacitor and lightning arrester, described total input-wire switch is connected with incoming power, lightning arrester is installed in the incoming power end, described block switch is connected with the total input-wire switch, described switched capacitor combination switch is connected with the switch of grouping, described capacitor is installed in the bottom in the casing, is equiped with a plurality of capacitor switching indicator lights on the described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206308174U CN201868890U (en) | 2010-11-30 | 2010-11-30 | Intelligent compensation device for low-voltage follower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206308174U CN201868890U (en) | 2010-11-30 | 2010-11-30 | Intelligent compensation device for low-voltage follower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868890U true CN201868890U (en) | 2011-06-15 |
Family
ID=44140033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206308174U Expired - Fee Related CN201868890U (en) | 2010-11-30 | 2010-11-30 | Intelligent compensation device for low-voltage follower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868890U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023045A (en) * | 2012-12-06 | 2013-04-03 | 辽宁省电力有限公司抚顺供电公司 | On-pole idle self-compensating device |
| CN109541339A (en) * | 2018-10-26 | 2019-03-29 | 苏州华电电气股份有限公司 | Power transformer bears short-circuit capacity pilot system |
-
2010
- 2010-11-30 CN CN2010206308174U patent/CN201868890U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023045A (en) * | 2012-12-06 | 2013-04-03 | 辽宁省电力有限公司抚顺供电公司 | On-pole idle self-compensating device |
| CN109541339A (en) * | 2018-10-26 | 2019-03-29 | 苏州华电电气股份有限公司 | Power transformer bears short-circuit capacity pilot system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110615 Termination date: 20111130 |