CN205670684U

CN205670684U - Infrared sensing control micro-intelligence static reacance generator device

Info

Publication number: CN205670684U
Application number: CN201620584224.6U
Authority: CN
Inventors: 刘悦
Original assignee: Shandong Institute of Commerce and Technology
Current assignee: Shandong Institute of Commerce and Technology
Priority date: 2016-06-16
Filing date: 2016-06-16
Publication date: 2016-11-02
Anticipated expiration: 2026-06-16

Abstract

The utility model discloses a kind of infrared sensing control micro-intelligence static reacance generator device, including the controller containing infrared induction main control unit, controller input is connected with the outfan of current transformer through adapter, the control end of controller output end and two IGBT energy transformation transmitters in parallel connects, two IGBT energy transformation transmitters in parallel are all connected with catalyst through reactor, and reactor filters the high-frequency harmonic that IGBT energy transformation transmitter inversion produces；Catalyst is connected with the main breaker accessing electrical network through sub-chopper；The input side of isolating transformer accesses electrical network through sub-chopper, and outlet side is connected with the input of DC source, provides power supply, isolation to control loop and main circuit for controlling loop；DC power output end is connected with controller.This device is arranged in the three-phase ac power cord road of load, the electric power system reactive-load compensation to load, improves grid stability, increases ability to transmit electricity, eliminates reactive power impact, filters harmonic wave, balances three phase network.

Description

Infrared sensing control micro-intelligence static reacance generator device

Technical field

This utility model relates to a kind of device integrating and filtering harmonics and reactive compensation, a kind of permissible (English of static reacance generator is the miniature static reacance generator of contactless infrared perception Based Intelligent Control: Static Var Generator, referred to as SVG) device.

Background technology

The industrial load of high energy consumption account for bigger composition in the total power load of China, and common industrial user includes large-scale Electric welding machine, large-scale wood-working factory, heavy duty shredder, mine hoist, harbour goliath, Ferrous Metallurgy, petrochemical industry Deng, these big industrial users often have independent network system.Every it is provided with that low-tension transformer is local and large-scale electric equipment Side all should be equipped with reactive power compensator (this is the regulation of department of State Grid), the work that particularly those power factors are relatively low Ore deposit, enterprise, residential block must be installed, large-size asynchronous motor, transformator, electric welding machine, punch press, lathe group, air compressor machine, forcing press, Crane, smelting, steel rolling, to roll aluminum, larger switch, electrified irrigation equipment, electric locomotive etc. especially needed.Incandescent lighting is removed in residential block Outward, air-conditioning, fridge etc. are the most all the consumption objects that reactive power is very important.Rural electricity consumption situation is relatively more severe, numerously District's electricity shortage, voltage pulsation is very big, and power factor is the lowest, and adding prosthetics equipment is to improve power supply situation, raising electric energy profit By the effective measures of rate.Power supply department is to technical specification constraints such as these user setup power factors and the qualities of power supply.

The load run in photo-voltaic power supply project scene mostly is inductive load, a large amount of inductive loads existed, and not only causes System power factor is too low, reduces production efficiency, increases enterprise electrical energy expense expenditure, also can cause voltage ripple of power network, sternly Affect band during weight and carry the safe operation of equipment, bring unnecessary economic loss to enterprise.According to " State Grid Corporation of China's photovoltaic electric Access electric power network technique of standing specifies (trying) " regulation, the power factor of large-scale and medium-sized photovoltaic plant should be able to surpass at 0.98( Before)～0.98(delayed) in the range of continuously adjustabe.Thus, photovoltaic generating system needs to improve merit by the way of reactive-load compensation Rate factor, it is ensured that the quality of power supply.The operation characteristic of the uncertainty of wind-resources and Wind turbines itself makes the output of Wind turbines Power is fluctuation, causes the problems such as grid-connected power factor defective, voltage deviation, voltage fluctuation and flicker, for Large Copacity There is also stability problem during wind energy turbine set access system, be required for dynamic passive compensation system.On the other hand, the ripple of system voltage Move and also the properly functioning of blower fan can be impacted.SVG is possible not only to meet the power factor of wind power integration system, voltage pulsation With the requirement such as flickering, it is also possible to reduce the system disturbance impact on blower fan.With capacitor and reactor with the use of, make based on The comprehensive compensation system low cost of SVG, performance are good.And the mobility of SVG, extensibility, also make whole reactive-load compensation System can synchronize extension along with the construction of wind energy turbine set.

Electrical network is also caused while protection environment by electric locomotive means of transportation seriously " to be polluted ", because electric locomotive is Single phase power supply, this single-phase load has resulted in the serious three-phase imbalance of power supply network and relatively low power factor, and has produced negative Sequence electric current.Countries in the world solve the unique channel of this problem be exactly along the railway appropriate location install SVG system, pass through The split-phase of SVG quickly compensates function to balance three phase network, and improves power factor.

Existing Reactive Compensation Mode mainly uses LC loop, is i.e. formed compensation loop by LC, and easy homologous ray occurs humorous Shaking, be typically not greater than actual life 3 years, often appearance is changed for 1 year one or March one changes, and that even i.e. trips on switching shows As, due to for there being a grade switching, so not having fast response time, more than 20ms, switching time is relatively slow, and condenser capacity is the most every Year declines, it is proposed that the time of running, less than 4 years, has level to regulate, and general switching capacity is 20-60kvar, and harmonic content is relatively big, mistake Mend or owe to mend or cause the overvoltage of system voltage or under-voltage, system voltage is relatively low when, be also that system needs most nothing The when that merit compensating, but now relatively low due to system voltage, and LC compensates loop compensation capacity and can decline, it is difficult to give enough benefits Repay capacity.

Utility model content

The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, it is provided that one can be with contactless infrared perception The miniature static reacance generator device of Based Intelligent Control, this device is arranged in the three-phase ac power cord road of load can be to negative The electric power system carried carries out high efficiency reactive-load compensation, improves grid stability, increases ability to transmit electricity, eliminates reactive power impact, filters Harmonic wave, balances three phase network.

For achieving the above object, this utility model employing following technical proposals:

A kind of infrared sensing control micro-intelligence static reacance generator device, including the control containing infrared induction main control unit Device, the input of described controller is connected with the outfan of current transformer by adapter, the outfan of controller and two The control end of IGBT energy transformation transmitter in parallel connects, and two IGBT energy transformation transmitters in parallel pass through reactance respectively Device is connected with catalyst, and reactor is in order to filter the high-frequency harmonic that IGBT energy transformation transmitter inversion produces；Described catalyst It is connected with the main breaker accessing electrical network by sub-chopper；The input side of isolating transformer accesses electrical network by sub-chopper, Outlet side is connected with the input of DC source, with thinking that control loop provides power supply, and plays isolation control loop and master The effect of circuit；The outfan of described DC source is connected with controller with thinking that control loop provides DC source.

Described controller includes infrared induction main control unit, PWM drive circuit, touch screen and RS485 interface circuit, described Infrared sensing control master unit implant infrared inductor, use dsp processor, the signal input part of dsp processor by adapter with The outfan of current transformer connects, and signal output part passes through the IGBT energy that PWM drive circuit is in parallel with said two respectively The control end of conversion transmitter connects；Described touch screen and RS485 interface circuit are connected with dsp processor respectively, and touch screen is used With display electrical network and all kinds of parameters of device, as voltage, electric current, Harmonic Current Distortion rate, harmonic current content, line voltage, Current waveform etc., simultaneously in order to arrange corresponding parameter according to power distribution network present situation.

Being parallel with electrolysis condenser on the IGBT energy transformation transmitter that said two is in parallel, electrolysis condenser is in order to store Direct current energy needed for IGBT energy transformation transmitter inversion.

Two IGBT energy transformation transmitters in parallel and electrolysis condenser form from commutation bridge circuit, through reactor It is connected in parallel on electrical network, suitably regulates amplitude and the phase place of bridge circuit AC output voltage, or directly control its exchange Side electric current, absorbs rapidly or sends required reactive power, it is achieved the most dynamically regulate idle purpose.

Described catalyst two ends are parallel with resistor, and resistor is in order to suppress infrared sensing control micro-intelligence static reacance generator The dash current produced when electrolysis condenser is charged by device first power transmission.

Being provided with high frequency filter between catalyst and sub-chopper, high frequency filter is in order to filter IGBT power model The high frequency ripple produced during inversion.

Being provided with ventilation heat abstractor in ventilation and heat non-resistance passage, the power line of ventilation heat abstractor is by fusing Device is connected with isolating transformer outlet side, in order to dispel the heat infrared sensing control micro-intelligence static reacance generator device.

Spark gap accesses electrical network by sub-chopper, in order to carry out infrared sensing control micro-intelligence static reacance generator device Overvoltage protection.

Infrared sensing control micro-intelligence static reacance generator device is connected with the three-phase alternating current electrical network of load by main breaker, Sample load current carry out filtering harmonic wave by accessing the current transformer of electrical network.

This utility model is made up of three basic function module: detection module, control computing module and compensation output module, By the current information of outside CT detecting system, then analyze current current information via control chip, such as PF, S, Q etc.；So After provided the driving signal of compensation by controller, the inversion circuit being finally made up of power electronic circuit.capacitor sends compensation electricity Stream.Device integrated human body infrared sensing unit, recognizable operator the nearlyest machine operation, have and automatically turn on operation screen merit Energy.

In work, by the switch of IGBT device in regulation inverter bridge, DC inversion can be controlled to the voltage exchanged Amplitude and phase place.By required idle in detecting system, can quickly send the idle of equal in magnitude, opposite in phase, it is achieved Idle in-situ balancing, keeps system practical work height high rate factor to run.

This utility model structure forms:

A. power section

The core main circuit of SVG, in order to realize power conversion.

Modularized design, the structurally and electrically performance of power cell is completely the same, can exchange.

B. linked reactor

For connecting SVG and electrical network, it is achieved the buffering of energy.

Reduce the switching harmonics in SVG output electric current, reduce common mode disturbances.

The most miniature control module

Modular structure, for the real-time control to SVG and auxiliary equipment thereof.

Realize SVG and host computer and the communication of control centre.

D. Digital Control System

Dsp processor calculates the reactive power needed for electrical network in real time, it is achieved dynamic tracking and compensation.

Control system uses modularized design.

E. industrial workstation

Friendly full Chinese Windows monitoring and operation interface are provided.

Realize remotely monitoring and control based on network.

The beneficial effects of the utility model are:

SVG is presently the most the reactive power compensation technology of advanced person, and its compensation device based on voltage converter achieves Reactive Compensation Mode qualitative leap.Micromodule SVG no longer uses jumbo electric capacity, inductance component, but by big merit The HF switch of rate power electronic devices realizes the conversion of quadergy.Technically, more traditional for SVG reactive power compensator There is a following advantage:

The most infrared sensing control

Ultimate attainment convenient system manages, device integrated human body infrared sensing unit, recognizable operator the nearlyest machine operation, Have and automatically turn on operation screen function.

2. micromodule structure

Modular is independently distributed framework and does energy-storage travelling wave tube without jumbo capacitor and reactor, it is ensured that this practicality is new Type floor space is less, it is simple to installs, overhaul, change, and realizes single-row operation during troubleshooting simultaneously.

3. response time is faster

SVG response time: < 5ms.Tradition is dynamic mends device response time: >=10ms.

SVG can complete mutually turning from specified capacitive reactive power to specified lagging reactive power within the extremely short time Changing, this unrivaled response speed can be competent at the compensation to impact load completely.

4. suppression voltage flicker ability is higher

The dynamic maximum of the suppression to voltage flicker of mending of tradition can reach 5:1 up to 2:1, SVG to the suppression of voltage flicker, very To higher.Additionally, due to SVG response speed is exceedingly fast, aggrandizement apparatus capacity can continue to improve the ability of suppression voltage flicker.

5. range of operation is wider

SVG can work in the range of specified capacitive in specified perception, so move the range of operation of benefit than other types Wide a lot.The more important thing is, when system voltage step-down, SVG can also export the reactive current close with declared working condition.And its The dynamic benefit of his type all provides capacitive reactive power by capacitor, and the reactive current of its output is directly proportional to line voltage, and line voltage is more Low, the reactive current of its output is the lowest, so dying down the compensation ability of electrical network the most accordingly.This is that other types move benefit technology On essential disadvantages.

6. compensate functional diversities

Make same set of SVG device, it is possible to achieve different multiple compensation functions:

Separate compensation load is idle

Separate compensation load harmonic

Separate compensation laod unbalance

Compensate simultaneously and load idle, harmonic wave and imbalance

7. active power filtering function

Using PWM technology, the harmonic content not only self produced is extremely low, additionally it is possible to the harmonic wave of load with idle mend Repay, it is achieved the function of active power filtering, be truly realized multifunction.

Accompanying drawing explanation

Fig. 1 is this utility model application structure schematic diagram；

Fig. 2 is this utility model structural representation；

In figure: 1 load, 2 current transformers, 3 main breakers, 4 infrared sensing control micro-intelligence static reacance generator device, 401 controllers, 4011 infrared sensing control master units, 4012 PWM drive circuit, 4013 touch screens, 4014 RS485 interface circuits, 402 IGBT energy transformation transmitters, 403 reactors, 404 catalysts, 405 electrolysis condenser, 406 resistors, 407 isolation become Depressor, 408 DC sources, 409 high frequency filters, 410 ventilation heat abstractors, 411 fuses, 412 spark gaps, 413 sub-open circuits Device, 414 adapters, 5 RS485 cables.

Detailed description of the invention

With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.

Structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate disclosed in description in Hold, understand for those skilled in the art and read, being not limited to the enforceable qualifications of this utility model, therefore not Have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not affecting this practicality newly Under effect that type can be generated by and the purpose that can reach, all should still fall and obtain can contain at the technology contents disclosed in this utility model In the range of lid.Meanwhile, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., It is merely convenient to understanding of narration, and is not used to limit the enforceable scope of this utility model, the change of its relativeness or tune Whole, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.

As it is shown in figure 1, infrared sensing control micro-intelligence static reacance generator device 4 is by the three-phase of main breaker 3 with load 1 AC network connects, and samples load current carry out filtering harmonic wave by accessing the current transformer 2 of electrical network.Infrared sensing control is micro- Intelligence static reacance generator device 4 has many groups, is connected by RS485 cable 5 between many groups.

As in figure 2 it is shown, infrared sensing control micro-intelligence static reacance generator device 4 includes controller 401, IGBT energy transformation Transmitter 402, reactor 403, catalyst 404, electrolysis condenser 405, resistor 406, isolating transformer 407, DC source 408, high frequency filter 409, ventilation heat abstractor 410, fuse 411, spark gap 412, sub-chopper 413 and adapter 414.

Controller 401 includes main control unit 4011, PWM drive circuit 4012, touch screen 4013 and RS485 interface circuit 4014, described infrared sensing control master unit 4011 implants infrared inductor, uses dsp processor, the signal input part of dsp processor Being connected by the outfan of adapter 414 with current transformer 2, signal output part is respectively by PWM drive circuit 4012 and institute The control end stating two IGBT energy transformation transmitters 402 being connected in parallel connects, described touch screen 4013 and RS485 interface electricity Road 4014 is connected with dsp processor respectively, touch screen 4013 in order to show all kinds of parameters of electrical network and device, as voltage, electric current, Harmonic Current Distortion rate, harmonic current content, line voltage, current waveform etc., simultaneously in order to arrange according to power distribution network present situation Corresponding parameter.

The IGBT energy transformation transmitter 402 that two are connected in parallel is connected with catalyst 404 by reactor 403 respectively, Reactor 403 is in order to filter the high-frequency harmonic that IGBT energy transformation transmitter 402 inversion produces.

Two IGBT energy transformation transmitters 402 in parallel and electrolysis condenser 405 form from commutation bridge circuit, pass through Reactor 403 is connected in parallel on electrical network, suitably regulates amplitude and the phase place of bridge circuit AC output voltage, or directly controls Make its ac-side current, absorb rapidly or send required reactive power, it is achieved the most dynamically regulate idle purpose.

Catalyst 404 is connected by the main breaker 3 of sub-chopper 413 with access electrical network, electrolysis condenser 405 respectively with The IGBT energy transformation transmitter 402 that two are connected in parallel is connected in parallel, in order to store IGBT energy transformation transmitter 402 inversion Required direct current energy.

Resistor 406 is connected in parallel on catalyst 404 two ends, in order to suppress infrared sensing control micro-intelligence static reacance generator device The dash current produced when electrolysis condenser 405 is charged by 4 first power transmissions.

The input side of isolating transformer 407 accesses electrical network by sub-chopper 413, and outlet side is defeated with DC source 408 Enter to hold and connect, with thinking that control loop provides power supply, and play the effect in isolation control loop and main circuit.

The outfan of DC source 408 is connected with controller 401 with thinking that control loop provides 24V DC source.

IGBT energy transformation transmitter 402 is two IGBT energy transformation transmitters being connected in parallel, and described two also The control end of the IGBT energy transformation transmitter 402 that connection connects is connected with controller 401 respectively.

High frequency filter 409 is arranged between catalyst 404 and sub-chopper 413, inverse in order to filter IGBT power model The high frequency ripple produced during change.

Ventilation heat abstractor 410 is arranged in ventilation and heat non-resistance passage, and the power line of ventilation heat abstractor 410 passes through Fuse 411 is connected with isolating transformer 407 outlet side, in order to enter infrared sensing control micro-intelligence static reacance generator device 4 Row high efficiency and heat radiation.

Spark gap 412 accesses electrical network by sub-chopper 413, in order to infrared sensing control micro-intelligence static reacance generator dress Put 401 and carry out overvoltage protection.

Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel need not to pay various amendments or deformation that creative work can make still at this utility model protection domain Within.

Claims

1. infrared sensing control micro-intelligence static reacance generator device, is characterized in that, including containing infrared induction main control unit Controller, the input of described controller is connected with the outfan of current transformer by adapter, the outfan of controller The control end of the IGBT energy transformation transmitter in parallel with two is connected, and two IGBT energy transformation transmitters in parallel lead to respectively Crossing reactor to be connected with catalyst, reactor is in order to filter the high-frequency harmonic that IGBT energy transformation transmitter inversion produces；Described Catalyst is connected with the main breaker accessing electrical network by sub-chopper；The input side of isolating transformer is accessed by sub-chopper Electrical network, outlet side is connected with the input of DC source, with thinking that control loop provides power supply, and plays isolation control loop Effect with main circuit；The outfan of described DC source is connected with controller, with thinking that control loop provides DC source.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, described controller bag Including infrared induction main control unit, PWM drive circuit, touch screen and RS485 interface circuit, described infrared sensing control master unit is implanted red Outer induction apparatus, uses dsp processor, and the signal input part of dsp processor is connected by the outfan of adapter with current transformer Connecing, signal output part passes through the control end of the PWM drive circuit IGBT energy transformation transmitter in parallel with said two even respectively Connect；Described touch screen and RS485 interface circuit are connected with dsp processor respectively, and touch screen is in order to show each of electrical network and device Class parameter.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, said two is in parallel IGBT energy transformation transmitter on be parallel with electrolysis condenser, electrolysis condenser is inverse in order to store IGBT energy transformation transmitter Direct current energy needed for change.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, two in parallel IGBT energy transformation transmitter and electrolysis condenser form from commutation bridge circuit, are connected in parallel on electrical network through reactor, regulation The amplitude of bridge circuit AC output voltage and phase place, or directly control its ac-side current, absorb rapidly or send Required reactive power, it is achieved the most dynamically regulate idle purpose.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, described catalyst two End is parallel with resistor, and resistor is in order to suppress infrared sensing control micro-intelligence first power transmission of static reacance generator device to electrolysis electricity The dash current produced during condenser charge.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, at catalyst and son High frequency filter it is provided with, the high frequency stricture of vagina produced when high frequency filter is in order to filter IGBT power model inversion between chopper Ripple.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, it is characterized in that, ventilation and heat without Being provided with ventilation heat abstractor in resistance channel, the power line of ventilation heat abstractor is by fuse and isolating transformer outlet side Connect, in order to infrared sensing control micro-intelligence static reacance generator device radiation.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, spark gap is by son Chopper accesses electrical network, in order to infrared sensing control micro-intelligence static reacance generator device overvoltage protection.

Infrared sensing control the most as claimed in claim 1 micro-intelligence static reacance generator device, is characterized in that, the micro-intelligence of infrared sensing control Can be connected with the three-phase alternating current electrical network of load by main breaker by static reacance generator device, mutual by accessing the electric current of electrical network Sensor is sampled load current filter harmonic wave.

Infrared sensing control the most as claimed in claim 9 micro-intelligence static reacance generator device, is characterized in that, infrared sensing control is micro- Intelligence static reacance generator device is provided with many groups, is connected by RS485 cable between many groups.