CN204858571U - Low pressure reactive power compensator - Google Patents

Low pressure reactive power compensator Download PDF

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Publication number
CN204858571U
CN204858571U CN201520481152.8U CN201520481152U CN204858571U CN 204858571 U CN204858571 U CN 204858571U CN 201520481152 U CN201520481152 U CN 201520481152U CN 204858571 U CN204858571 U CN 204858571U
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China
Prior art keywords
circuit
compensator
cabinet
voltage
low
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CN201520481152.8U
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Chinese (zh)
Inventor
周小成
顾菊明
顾文达
曹晨明
胡鸣忠
苗道权
沈璐冰
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Kunshan Yangcheng Aipu Electric Co Ltd
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Kunshan Yangcheng Aipu Electric Co Ltd
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Priority to CN201520481152.8U priority Critical patent/CN204858571U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

Abstract

The utility model relates to a low pressure reactive power compensator, it includes the cabinet body, and the internal portion of cabinet is equipped with controller, air switch, condenser, fuse and blend switch, and the controller carries out compensating capacitor's switching through the blend switch, the whole reactive power compensator's of air switch control power and overcurrent protection, fuse and air switch cooperation, the controller includes singlechip and a plurality of detection circuitry that carry out the data interaction with the singlechip, a plurality of detection circuitry include: power factor observation circuit, real -time supervision circuit, voltage measurement transfer circuit and current measurement transfer circuit, voltage measurement transfer circuit and current measurement transfer circuit pass through analog/digital device and give the singlechip with data transmission, the singlechip passes through pulse driving circuit and is connected with the blend switch. The defect that the switching vibrate when the device had solved the underloading has been solved and the insufficient shortcoming of compensation has been appeared when heavily loaded, and the device has compromise reduction power consumption and has improved voltage quality simultaneously.

Description

A kind of low-voltage reactive compensator capable
Technical field
The utility model belongs to field of electrical equipment, is specifically related to a kind of low-voltage reactive compensator capable.
Background technology
Along with improving constantly of social life level, household electrical appliance increase with explosion type quantity, cause reactive power consumption in low voltage electric network to increase, again because the power factor of most of power electronic equipment is low, cause grid supply quality to decline, therefore, utilize now reactive power compensation to solve this problem.The principle of reactive power compensation is: having the device of capacitive load and inductive load and being connected in same circuit, when capacitive load releases energy, inductive load absorbs energy; When inductive load releases energy, capacitive load absorbs energy, and energy mutually exchanges between two kinds of loads.
At present, mainly there is following defect in the device being usually used in reactive power compensation: using A.C. contactor as fling-cut switch time a kind of, speed is slow, the change of load reactive power cannot be followed the tracks of fast, and more serious inrush current and switching overvoltage can be caused during switched capacitor, cause the contact of A.C. contactor to burn or by compensation condenser internal breakdown, have a strong impact on the useful life of reactive power compensator; Another kind of device in control mode using power factor as detection limit and control objectives, because compensation final purpose reduces to pass in and out the idle of electrical network, reactive power is by voltage, electric current, phase decision, the phase difference of power factor sampling mode only in detection of grid, accurately can not reflect the idle component size of load in electrical network, abundant compensation cannot be reached during heavy duty, easy switching concussion during underloading, affect reliability and the useful life of control system, also affect the safe operation of electrical network and subscriber equipment.
Therefore, need a kind of low-voltage reactive compensator capable now, this device can be taken into account and improves power factor and improve quality of voltage, and can avoid the reciprocal switching problem of reactive power compensator, also solves switching concussion and occurs compensating insufficient defect.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of low-voltage reactive compensator capable, and this device can either be taken into account and improves power factor and improve quality of voltage, and can avoid the reciprocal switching problem of reactive power compensator.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of low-voltage reactive compensator capable, it comprises cabinet, described cabinet inside is provided with controller, air switch, capacitor, fuse and combination switch, described controller compensates the switching of capacitor by described combination switch, described air switch controls power supply and the overcurrent protection of whole reactive power compensator, described fuse coordinates with described air switch, described controller comprises single-chip microcomputer and carries out some testing circuits of data interaction with described single-chip microcomputer, some testing circuits comprise: power-factor monitoring circuit, Real-Time Monitoring circuit, voltage measurement translation circuit and current measurement translation circuit, described voltage measurement translation circuit and current measurement translation circuit transfer data to described single-chip microcomputer by analog-digital commutator, described single-chip microcomputer is connected with described combination switch by pulse driving circuit.
In a preferred embodiment of the present utility model, comprise further, also comprise communication interface circuit and LED display circuit, described communication interface circuit carries out communicating data information alternately for supporting reactive power compensator, and described LED display circuit shows the real time data of whole reactive power compensator for supporting LED display.
In a preferred embodiment of the present utility model, comprise further, also comprise keyboard interface circuit, be connected with external connection keyboard by described keyboard interface circuit.
In a preferred embodiment of the present utility model, comprise further, described combination switch is made up of diode and thyristor inverse parallel.
In a preferred embodiment of the present utility model, comprise further, described cabinet inside is also provided with trigger board, and described trigger board is the control drive circuit of described thyristor, and the switching signal of described controller is converted into high-frequency pulse signal by described trigger board.
In a preferred embodiment of the present utility model, comprise further, described capacitor is three-phase self-healing type parallel condenser.
In a preferred embodiment of the present utility model, comprise further, described cabinet top is provided with dust cap, is provided with gap between described dust cap and described cabinet.
In a preferred embodiment of the present utility model, comprise further, bottom and the side of described cabinet are equipped with louvre.
The beneficial effects of the utility model are:
One, reactive power compensator of the present utility model are using reactive power as main criterion, voltage is as assistant criteria, effectively overcome the problem in the control mode using power factor as switching criterion, the defect of switching concussion when solving underloading, occur compensating insufficient shortcoming when solving heavy duty, this device has been taken into account reduction power loss and has been improved quality of voltage simultaneously.
Two, the switching on-load switch of reactive power compensator of the present utility model adopts independent pulse triggering means, ensure that thyristor triggers when both end voltage zero passage, achieves capacitance group without transient process switching, simple and reliable.
Three, the reactive power of reactive power compensator of the present utility model quick and precisely compensates, and which solves the switching problem in reactive power compensation process, ensure that the useful life of device, reduce cost to have good practical value.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology, be briefly described to the accompanying drawing used required in the description of embodiment technology below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 principle schematic of the present utility model.
Fig. 2 is the main circuit diagram of the utility model reactive power compensator.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment
As shown in Figure 1-2; a kind of low-voltage reactive compensator capable is disclosed in the present embodiment; it comprises cabinet; above-mentioned cabinet inside is provided with controller, air switch, capacitor, fuse and combination switch; above-mentioned controller compensates the switching of capacitor by above-mentioned combination switch; above-mentioned air switch controls power supply and the overcurrent protection of whole reactive power compensator, and above-mentioned fuse coordinates with above-mentioned air switch.
Above-mentioned controling appliance has the function that idle switching judges, electrical parameter calculates, controller comprises single-chip microcomputer and carries out some testing circuits of data interaction with above-mentioned single-chip microcomputer, some testing circuits comprise: power-factor monitoring circuit, Real-Time Monitoring circuit, voltage measurement translation circuit and current measurement translation circuit, and above-mentioned voltage measurement translation circuit and current measurement translation circuit transfer data to above-mentioned single-chip microcomputer by analog-digital commutator; Above-mentioned single-chip microcomputer is connected with above-mentioned combination switch by pulse driving circuit.
In the present embodiment, above-mentioned combination switch is made up of diode and thyristor inverse parallel.
In order to make further the reactive power compensator in the present embodiment and external information mutual, also be provided with in the apparatus: communication interface circuit, LED display circuit and keyboard interface circuit, above-mentioned communication interface circuit carries out communicating data information alternately for supporting reactive power compensator, and above-mentioned LED display circuit shows the real time data of whole reactive power compensator for supporting LED display; Be connected with external connection keyboard by above-mentioned keyboard interface circuit.
Also be provided with trigger board in above-mentioned cabinet inside, above-mentioned trigger board is the control drive circuit of above-mentioned thyristor, and the switching signal of above-mentioned controller is converted into high-frequency pulse signal by above-mentioned trigger board; Above-mentioned capacitor is three-phase self-healing type parallel condenser.
Above-mentioned cabinet top is provided with dust cap, is provided with gap between above-mentioned dust cap and above-mentioned cabinet; Bottom and the side of above-mentioned cabinet are equipped with louvre.
As shown in the main circuit diagram of the reactive power compensator in Fig. 2, A, B, C three-phase power line enters in the cabinet of reactive power compensator through air switch, be connected with combination switch through fuse again, capacitor is connected with fuse and air switch through combination switch, then lightning arrester ground connection again after being connected with air switch and three-phase power line.
The principle of reactive power compensator of the present utility model is: will gather in the sampled signal such as voltage, electric current feeding controller from circuit and carry out Data Analysis Services, computational scheme the reactive power that lacks, controller is again according to the reactive power data calculated, according to the control strategy preset, determine whether switched capacitor, then controller is according to result of determination, and the on-load switch module consisted of thyristor and diode inverse parallel controls switched capacitor.
The reactive power compensator of utility model is using reactive power as main criterion, voltage is as assistant criteria, effectively overcome the problem in the control mode using power factor as switching criterion, the defect of switching concussion when solving underloading, occur compensating insufficient shortcoming when solving heavy duty, this device has been taken into account reduction power loss and has been improved quality of voltage simultaneously.
The switching on-load switch of reactive power compensator of the present utility model adopts independent pulse triggering means, ensure that thyristor triggers when both end voltage zero passage, achieves capacitance group without transient process switching, simple and reliable.
The reactive power of reactive power compensator of the present utility model quick and precisely compensates, and which solves the switching problem in reactive power compensation process, ensure that the useful life of device, reduce cost to have good practical value.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (8)

1. a low-voltage reactive compensator capable, it comprises cabinet, described cabinet inside is provided with controller, air switch, capacitor, fuse and combination switch, described controller compensates the switching of capacitor by described combination switch, described air switch controls power supply and the overcurrent protection of whole reactive power compensator, described fuse coordinates with described air switch, it is characterized in that, described controller comprises single-chip microcomputer and carries out some testing circuits of data interaction with described single-chip microcomputer, some testing circuits comprise: power-factor monitoring circuit, Real-Time Monitoring circuit, voltage measurement translation circuit and current measurement translation circuit, described voltage measurement translation circuit and current measurement translation circuit transfer data to described single-chip microcomputer by analog-digital commutator, described single-chip microcomputer is connected with described combination switch by pulse driving circuit.
2. a kind of low-voltage reactive compensator capable according to claim 1, it is characterized in that, also comprise communication interface circuit and LED display circuit, described communication interface circuit carries out communicating data information alternately for supporting reactive power compensator, and described LED display circuit shows the real time data of whole reactive power compensator for supporting LED display.
3. a kind of low-voltage reactive compensator capable according to claim 2, is characterized in that, also comprise keyboard interface circuit, is connected with external connection keyboard by described keyboard interface circuit.
4. a kind of low-voltage reactive compensator capable according to claim 1, is characterized in that, described combination switch is made up of diode and thyristor inverse parallel.
5. a kind of low-voltage reactive compensator capable according to claim 4, it is characterized in that, described cabinet inside is also provided with trigger board, and described trigger board is the control drive circuit of described thyristor, and the switching signal of described controller is converted into high-frequency pulse signal by described trigger board.
6. a kind of low-voltage reactive compensator capable according to claim 1, is characterized in that, described capacitor is three-phase self-healing type parallel condenser.
7. a kind of low-voltage reactive compensator capable according to claim 1, is characterized in that, described cabinet top is provided with dust cap, is provided with gap between described dust cap and described cabinet.
8. a kind of low-voltage reactive compensator capable according to claim 7, is characterized in that, bottom and the side of described cabinet are equipped with louvre.
CN201520481152.8U 2015-07-07 2015-07-07 Low pressure reactive power compensator Active CN204858571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520481152.8U CN204858571U (en) 2015-07-07 2015-07-07 Low pressure reactive power compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104979838A (en) * 2015-07-07 2015-10-14 昆山阳澄爱普电气有限公司 Low-voltage reactive power compensation device
WO2018072123A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet with excellent performance
WO2018072125A1 (en) * 2016-10-19 2018-04-26 周东 Anti-corrosion low-voltage reactive power compensation cabinet
WO2018072124A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet with rational structure
WO2018072122A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104979838A (en) * 2015-07-07 2015-10-14 昆山阳澄爱普电气有限公司 Low-voltage reactive power compensation device
WO2018072123A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet with excellent performance
WO2018072125A1 (en) * 2016-10-19 2018-04-26 周东 Anti-corrosion low-voltage reactive power compensation cabinet
WO2018072124A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet with rational structure
WO2018072122A1 (en) * 2016-10-19 2018-04-26 周东 Low-voltage reactive power compensation cabinet

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