CN104993498A - Harmonic suppression-type low-voltage reactive power compensation device - Google Patents
Harmonic suppression-type low-voltage reactive power compensation device Download PDFInfo
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- CN104993498A CN104993498A CN201510440501.6A CN201510440501A CN104993498A CN 104993498 A CN104993498 A CN 104993498A CN 201510440501 A CN201510440501 A CN 201510440501A CN 104993498 A CN104993498 A CN 104993498A
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- electromagnetic type
- nearly zero
- reactor
- voltage reactive
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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
Abstract
The invention discloses a harmonic suppression-type low-voltage reactive power compensation device, which comprises a shell, and a moulded case circuit breaker QF, an electromagnetic-type near zero switch KD, a micro current transformer TA, a reactor L, a temperature switch KT, a low-voltage power capacitor C, a temperature sensor RT, a man-machine connection assembly A2 and an intelligent assembly A1 arranged in the shell. According to the harmonic suppression-type low-voltage reactive power compensation device, the structure is simple, the operation is convenient, the low-voltage power capacitor serves as a main body and is combined with electrical components for control, measurement, signal, network connection, filter and the like to form a combined electric appliance, the performance is excellent, the applications are flexible, and the combined harmonic suppression-type low-voltage reactive power compensation device has good adjustability and maintainability.
Description
Technical field
The present invention relates to a kind of reactive power compensator, particularly one presses down humorous formula low-voltage reactive compensator capable.
Background technology
Reactive power compensation, works the power factor improving electrical network, reduces the loss of supply transformer and conveying circuit, improve power supplying efficiency in power supply system, improves power supply environment.So reactive power compensation device is in an indispensable very important position in power supply system.Rational selection compensation arrangement, can accomplish the loss reducing electrical network to greatest extent, power grid quality is improved.Otherwise, as selected or improper use, may electric power system be caused, voltage fluctuation, the factors such as harmonic wave increase.Existing reactive power compensator internal structure assembling is complicated, and on-site maintenance is also inconvenient, on-the-spot program updates complex steps.The information such as log are paid little attention to, and after fault occurs, it is large that failure cause obtains difficulty.Heat dispersion is short of, and has to be hoisted.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of structure simple, easy to maintenance press down humorous formula low-voltage reactive compensator capable.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
One presses down humorous formula low-voltage reactive compensator capable, it is characterized in that: the breaker of plastic casing QF comprising shell and arrange in the enclosure, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, reactor L, temperature switch KT, low voltage power capacitor C, temperature sensor RT, man-machine interface assembly A2 and intelligent assembly A1, described breaker of plastic casing QF input is connected with three phase mains, breaker of plastic casing QF output is connected with the nearly zero fling-cut switch KD one end of electromagnetic type, the nearly zero fling-cut switch KD other end of electromagnetic type is connected with micro-transformer of current TA one end, the micro-transformer of current TA other end is connected with reactor L one end, the reactor L other end is connected with low voltage power capacitor C one end, the low voltage power capacitor C other end interconnects, temperature sensor RT is arranged on low voltage power capacitor C side and is connected with intelligent assembly A1, described three phase mains, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, temperature switch KT, temperature sensor RT, man-machine interface assembly A2 is all connected with intelligent assembly A1.
Further, described intelligent assembly A1 is provided with online plug-in unit X1 and status indicator lamp plug-in unit X2.
Further, described reactor L and temperature switch KT is modular integrated structure, and breaker of plastic casing QF and the nearly zero fling-cut switch KD of electromagnetic type is modular integrated structure.
Further, but described humorous formula low-voltage reactive compensator capable also comprises power module, and the Capacitor banks that power module and low voltage power capacitor C are formed is modular integrated structure.
Further, described man-machine interface assembly A2 comprises LCDs.
Further, described temperature switch KT is arranged on reactor L, and when reactor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically.
Further, described temperature sensor RT is arranged on low voltage power capacitor C, and when low voltage power capacitor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically.
The present invention compared with prior art, have the following advantages and effect: press down humorous formula low-voltage reactive compensator capable structure simple, easy to maintenance, based on low voltage power capacitor, with it controlled, measure, signal, the electric components such as online and filtering combine, form a kind of combined electrical apparatus, its excellent performance, applying flexible, composition to press down humorous formula low-voltage reactive compensator capable adjustability, the property tieed up good.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram pressing down humorous formula low-voltage reactive compensator capable of the present invention.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
As shown in the figure, one of the present invention presses down humorous formula low-voltage reactive compensator capable, the breaker of plastic casing QF comprising shell and arrange in the enclosure, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, reactor L, temperature switch KT, low voltage power capacitor C, temperature sensor RT, man-machine interface assembly A2 and intelligent assembly A1, breaker of plastic casing QF input is connected with three phase mains, breaker of plastic casing QF output is connected with the nearly zero fling-cut switch KD one end of electromagnetic type, the nearly zero fling-cut switch KD other end of electromagnetic type is connected with micro-transformer of current TA one end, the micro-transformer of current TA other end is connected with reactor L one end, the reactor L other end is connected with low voltage power capacitor C one end, the low voltage power capacitor C other end interconnects, temperature sensor RT is arranged on low voltage power capacitor C side and is connected with intelligent assembly A1, three phase mains, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, temperature switch KT, temperature sensor RT, man-machine interface assembly A2 is all connected with intelligent assembly A1.Intelligent assembly A1 is provided with online plug-in unit X1 and status indicator lamp plug-in unit X2.Reactor L and temperature switch KT is modular integrated structure, and breaker of plastic casing QF and the nearly zero fling-cut switch KD of electromagnetic type is modular integrated structure.Press down humorous formula low-voltage reactive compensator capable and also comprise power module, the Capacitor banks that power module and low voltage power capacitor C are formed is modular integrated structure.Man-machine interface assembly A2 comprises LCDs.Temperature switch KT is arranged on reactor L, and when reactor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically, protects reactor, extends reactor useful life.Temperature sensor RT is arranged on low voltage power capacitor C, and when low voltage power capacitor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically, protects low voltage power capacitor, extends capacitor useful life.
According to use occasion, press down humorous formula low-voltage reactive compensator capable and can be divided into single-phase, three-phase and phase splitting compensation.Single-phase compensation only needs the nearly zero fling-cut switch KD of 1 tunnel electromagnetic type, and three-phase compensates need comprise the nearly zero fling-cut switch KD of 2 tunnel electromagnetic types, and phase splitting compensation needs to comprise the nearly zero fling-cut switch KD of identical 3 tunnel electromagnetic types.
Press down humorous formula low-voltage reactive compensator capable entirety and adopt Modular Structure Design.Breaker of plastic casing QF and the nearly zero fling-cut switch KD of electromagnetic type connects to form switch module.The handle that reactor L comprises, as with force, both can facilitate reactor to install and change, and also pressed down in humorous formula low-voltage reactive compensator capable transport installation process providing conveniently in intelligence.Breaker of plastic casing QF has dropout defencive function; release is connected with intelligent assembly A1; intelligent assembly A1 can according to the cut-out pressing down the ruuning situation of humorous formula low-voltage reactive compensator capable and realize power supply, thus protects reactive compensation unit or prevent the further deterioration of fault.Dropout defencive function comprises two kinds: software is threaded off and hardware is threaded off.Software protection is applicable to work when the not high fault of requirement of real-time occurs, and hardware is threaded off and in case of emergency can be had an effect, and makes protection reliable more in time.Intelligent assembly A1 detected temperatures value, selects whether start radiator fan according to the size of temperature, moves back fortune simultaneously still to thread off protection according to how many selections of temperature over-range.Radiator fan adopts movable drawer type structure, and be positioned between reactor L and low voltage power capacitor C, on low voltage power capacitor C, end housing arranges ventilating opening, and on the upside of shell and both sides arrange air inlet, monitor the ruuning situation of radiator fan simultaneously.
Intelligent assembly A1 measures three-phase load situation of change in real time, carries out the input and the excision that press down humorous formula low-voltage reactive compensator capable, record capacitor history run simultaneously according to no-power vacancy, and distribution parameter when various fault occurs instantaneously.Intelligent assembly A1 is put into operation by capacitance current instrument transformer Real-Time Monitoring capacitor the size of electric current, calculates attenuation degree, shows condenser capacity in real time.When attenuation degree reach to close on reactor L there is resonance before exit the operation of capacitor, thus protection intelligence presses down humorous formula low-voltage reactive compensator capable.In intelligent assembly A1, communication interface adopts 485 communication online, ring bus mode, realize many group intelligence to press down and certainly organize machine, the disconnection of arbitrary section of grid line between humorous formula low-voltage reactive compensator capable, do not affect intelligence and press down normal communication operation between humorous formula low-voltage reactive compensator capable.
When work, breaker of plastic casing QF closes, intelligent assembly A1 works, if need the low voltage power capacitor that puts into operation, a combined floodgate information or the electric parallel signal that closes a floodgate is sent to intelligent assembly A1, intelligent assembly A1 sends closing pulse and controls the nearly zero fling-cut switch KD junction closure of electromagnetic type after receiving switching signal, low voltage power capacitor is energized and runs.What produce during zero fling-cut switch KD junction closure nearly for minimizing electromagnetic type shoves, intelligent assembly A1 detects the zero crossing moment of the nearly zero fling-cut switch KD both sides alternating voltage of electromagnetic type, simultaneously according to the time nearly zero fling-cut switch KD of chien shih electromagnetic type junction closure when its contact both sides voltage is zero of the nearly zero fling-cut switch KD adhesive of electromagnetic type, thus realize zero of zero switching and throw function.After low voltage power capacitor energising runs, if need to use it to move back fortune, then send a separating brake information or a separating brake level signal to intelligent assembly A1, intelligent assembly A1 sends separating brake pulse after receiving signal, the contact of the nearly zero fling-cut switch KD of electromagnetic type disconnects, and low voltage power capacitor has a power failure and out of service.In order to reduce the impact produced when the nearly zero fling-cut switch KD contact of electromagnetic type disconnects, intelligent assembly A1 detects the alternating current zero crossing moment in the nearly zero fling-cut switch KD contact loop of electromagnetic type, simultaneously according to making the release time of the nearly zero fling-cut switch KD of electromagnetic type the nearly zero fling-cut switch KD of electromagnetic type disconnect when being zero by its contact electric current, thus realize zero of zero switching and cut function.
The nearly zero fling-cut switch KD of electromagnetic type measures supply voltage by intelligent assembly A1; if when overtension, too low or phase shortage, severe three-phase are uneven, do not put into operation low voltage power capacitor or moved back fortune after the low voltage power capacitor that puts into operation, and realizes voltage-type protection.When loop current is large especially, the coil in breaker of plastic casing QF produces larger electromagnetic attraction, breaker of plastic casing QF is tripped, realizes electric current speed and cut protection.By intelligent assembly A1, each phase operating current of low voltage power capacitor is measured, if electric current is comparatively large or the serious imbalance of three-phase current, move back fortune low voltage power capacitor, realize excess current protection and the unbalance protection of three-phase current of low-voltage power torch phase.
Above content described in this specification is only made for the present invention illustrating.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of specification of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (7)
1. press down a humorous formula low-voltage reactive compensator capable, it is characterized in that: the breaker of plastic casing QF comprising shell and arrange in the enclosure, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, reactor L, temperature switch KT, low voltage power capacitor C, temperature sensor RT, man-machine interface assembly A2 and intelligent assembly A1, described breaker of plastic casing QF input is connected with three phase mains, breaker of plastic casing QF output is connected with the nearly zero fling-cut switch KD one end of electromagnetic type, the nearly zero fling-cut switch KD other end of electromagnetic type is connected with micro-transformer of current TA one end, the micro-transformer of current TA other end is connected with reactor L one end, the reactor L other end is connected with low voltage power capacitor C one end, the low voltage power capacitor C other end interconnects, temperature sensor RT is arranged on low voltage power capacitor C side and is connected with intelligent assembly A1, described three phase mains, the nearly zero fling-cut switch KD of electromagnetic type, micro-transformer of current TA, temperature switch KT, temperature sensor RT, man-machine interface assembly A2 is all connected with intelligent assembly A1.
2. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: described intelligent assembly A1 is provided with online plug-in unit X1 and status indicator lamp plug-in unit X2.
3. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: described reactor L and temperature switch KT is modular integrated structure, breaker of plastic casing QF and the nearly zero fling-cut switch KD of electromagnetic type is modular integrated structure.
4. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: but described humorous formula low-voltage reactive compensator capable also comprises power module, the Capacitor banks that power module and low voltage power capacitor C are formed is modular integrated structure.
5. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: described man-machine interface assembly A2 comprises LCDs.
6. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: described temperature switch KT is arranged on reactor L, when reactor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically.
7. press down humorous formula low-voltage reactive compensator capable according to one according to claim 1, it is characterized in that: described temperature sensor RT is arranged on low voltage power capacitor C, when low voltage power capacitor temperature exceedes the value of setting, device disconnects the nearly zero fling-cut switch KD of electromagnetic type automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440501.6A CN104993498A (en) | 2015-07-24 | 2015-07-24 | Harmonic suppression-type low-voltage reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440501.6A CN104993498A (en) | 2015-07-24 | 2015-07-24 | Harmonic suppression-type low-voltage reactive power compensation device |
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| Publication Number | Publication Date |
|---|---|
| CN104993498A true CN104993498A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510440501.6A Pending CN104993498A (en) | 2015-07-24 | 2015-07-24 | Harmonic suppression-type low-voltage reactive power compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732932A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | A kind of supply and demand type Intelligent low-voltage is idle control assembly structure and control system |
| CN107947188A (en) * | 2017-11-30 | 2018-04-20 | 营口康辉石化有限公司 | Low pressure static reactive power compensator |
-
2015
- 2015-07-24 CN CN201510440501.6A patent/CN104993498A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732932A (en) * | 2017-11-27 | 2018-02-23 | 江苏现代电力科技股份有限公司 | A kind of supply and demand type Intelligent low-voltage is idle control assembly structure and control system |
| CN107947188A (en) * | 2017-11-30 | 2018-04-20 | 营口康辉石化有限公司 | Low pressure static reactive power compensator |
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Application publication date: 20151021 |