CN205377297U - Mixed type dynamic reactive compensation cabinet - Google Patents
Mixed type dynamic reactive compensation cabinet Download PDFInfo
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- CN205377297U CN205377297U CN201521112821.0U CN201521112821U CN205377297U CN 205377297 U CN205377297 U CN 205377297U CN 201521112821 U CN201521112821 U CN 201521112821U CN 205377297 U CN205377297 U CN 205377297U
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- thyristor
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model discloses a mixed type dynamic reactive compensation cabinet, it includes: the terminal of wiring usefulness, current signal sampling circuit module, TSC thyristor -switched capacitor unit, atmospheric control circuit module, triggering signal circuit module, main circuit module, switching show circuit module, current measurement circuit module, voltage measurement circuit module, touch screen control circuit module, secondary control circuit module. A plurality of TSC thyristor -switched capacitor units are connected with triggering signal circuit module, and triggering signal circuit module, touch screen control circuit module are connected with secondary control circuit module, and current measurement circuit module, current signal sampling circuit module pass through the terminal and be connected with secondary control circuit module, secondary control loop module, voltage measurement circuit module, atmospheric control circuit module, switching show that circuit module is connected with main circuit module. The utility model overcomes tradition reactive power compensator adopts mechanical contact easily to burn out, strike the big shortcoming of shoving.
Description
Technical field
This utility model relates to capacitor compensation cabinet technical field, particularly to a kind of hybrid dynamic reactive compensation cabinet.
Background technology
Owing to the most of electrical equipment currently used is except resistive load, all belong to perceptual electric loading (such as electrical equipments such as daylight lamp, transformator, motors), and these inductive loads are in use, power supply voltage-phase is made to change (namely electric current lags behind voltage), therefore voltage pulsation is big, reactive power increases, and wastes a large amount of electric energy.When power factor is too low, so that power supply output electric current is excessive and overburden phenomenon occur.Therefore, current power supply circuits all need adopt capacitor compensation cabinet that reactive power is compensated.
Capacitor compensation cabinet is a kind of for compensated dynamo reactive current, the device alleviating generator operation load, it is adaptable in power frequency electrical power trans mission/distribution system, in order to improve power factor, adjust line voltage, reduce line loss, give full play to device efficiency, improve power supply quality.
But it is discontinuous to there is compensation in current capacitor compensation cabinet, and capacity exists differential problem.
Utility model content
Technical problem to be solved in the utility model is in that the compensation existing for existing capacitor compensation cabinet is discontinuous, and capacity is existed differential problem and provides a kind of hybrid dynamic reactive compensation cabinet being improved low-voltage distribution system capacitance compensation by secondary principle wiring technique.This hybrid dynamic reactive compensation cabinet can apply to following field: 1) load power factor is on the low side, and line electricity pressure drop is big, it is necessary to carry out the occasion of reactive power compensation；2) power-factor of load excursion it is applied to big, the occasion that pace of change is fast；3) the electricity consumption occasion that voltage pulsation and dynamic compensation are had higher requirements.4) electric power, machine-building, automobile, metallurgy, shipbuilding, port fortune, railway, colliery, the industry such as chemical industry, oil field it are widely used in.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of hybrid dynamic reactive compensation cabinet, including:
The terminal of wiring；
It is arranged on the current signal sampling circuit module in system incoming line cabinet；
Some TSC thyristor switchable capacitor unit；Each TSC thyristor switchable capacitor unit includes A, B, C three-phase switching branch road, in A, B, C three-phase switching branch road, wherein it is in series with a thyristor groups and an inductance or is in series with a thyristor groups and an inductance in A, C two-phase switching branch road, described thyristor groups includes two anti-parallel thyristors, and the capacitor in this TSC thyristor switchable capacitor unit is connected to the grid or excises from electrical network by described thyristor groups；
In order to regulate and the Temperature and Humidity Control return circuit module of the linear quadratic control of temperature and humidity regulation in switch board；
One in order to trigger the triggering signal circuit module of the turn on thyristors in each TSC thyristor switchable capacitor unit；
One main loop module that electric energy is provided when working in order to hybrid dynamic reactive compensation cabinet；
The switching show circuit module of one switching and SVG work for showing IGCT folding condition in main loop module；
For measuring the current measurement circuit module of size of current when capacitor compensation cabinet works；
For measuring the voltage measurement circuit module of voltage swing when capacitor compensation cabinet works；
For measuring and showing capacitor compensation cabinet work and control the touch screen control return circuit module of mode of operation, described touch screen controls to be provided with a touch screen in loop；
For the loop in capacitor compensation cabinet being controlled the secondary control loop module regulated；
The triggering end of the IGCT in described some TSC thyristor switchable capacitor unit is connected with described triggering signal circuit module, described triggering signal circuit module, touch screen control return circuit module and are connected with described secondary control loop module, and described current measurement circuit module, current signal sampling circuit module are connected with described secondary control loop module by described terminal；Described secondary control loop module, voltage measurement circuit module, Temperature and Humidity Control return circuit module, switching show circuit module are connected with described main loop module.
In a preferred embodiment of the present utility model, the electric capacity in each TSC thyristor switchable capacitor unit adopts wye connection or delta connection to connect.
Owing to have employed technical scheme as above, this utility model improves the device of low-voltage distribution system capacitance compensation by secondary principle wiring technique.TSVG mixed type low-voltage dynamic reactive power compensation uses full Based Intelligent Control touch screen, display and setup parameter, the control program of input device, can transmit to SVG, electric current according to acquisition system and voltage parameter, carry out logical operations by inputting SVG static reacance generator program, signal be transmitted to SVG keyset, signal to controllable silicon noncontacting switch and trigger control thyristor switch, switching capacitance.Detect intrasystem power factor, by power factor setting value, control switching SVG static reacance generator and dynamically control difference group number Capacitor banks, meeting all the time with guarantee power factor and set requirement.With being provided with for regulating and the secondary control loop of humiture in switch board in device, to guarantee that device can not be subject to the impact of humiture and normal operation.Thus realizing effect that device is good:
1) compensating power continuous, dynamic
TSVG has the function of the Passively compensated device of static reacance generator SVG and TSC equally, quickly response, can compensate by real-time tracking, it is applicable to the occasion that general impact load frequently changes, and device output reactive capability is continuous print, it does not have the packet of jump staged compensates, and compensation precision is high, can guarantee that power factor is close to 1, energy-saving effect is notable.
2) current harmonics is suppressed
TSVG is by the switching to IGCT, TSC passive filtering branch road is put into operation, harmonic component with absorption system, play the clean electric power energy, administer the effect of electric pollution, TSVG can also pass through the control to IGBT simultaneously, produce the compensation electric current contrary with harmonic component size of current equal direction in load and inject in electric power system, to realize filtering the effect of (counteracting) harmonic filtration.
3) Voltage Drop is reduced
Electrical network is changed fast response time, can the change of 10mS load-responsive.The Voltage Drop caused with general impact load equipment frequent starting can be fully solved, be effectively reduced the Voltage Drop caused because of external power grid fault.
4) load three-phase imbalance is compensated
The three phase power in SVG and TSC loop can be redistributed by TSVG, so that device, load association after compensating present symmetrical balance part throttle characteristics, reduces neutral current, reduces loss, it is to avoid the three characteristics of the middle term is uneven and is likely to the fault caused.
This utility model overcome tradition reactive power compensator adopt mechanical contact easily burn, inrush current big, and only thyristor series capacitor, there are the shortcomings such as discontinuous compensation, use all-digital intelligent touch screen control system, utilize thyristor switch to control electric capacity and SVG static reacance generator carries out switching, quick operating passing zero can be realized, impact load can be played the good compensation effect of stepless continuous.It is widely used in the industries such as electric power, automobile, machine-building, metallurgy, colliery, chemical industry, oil field, electric railway, public building.
This utility model TSVG hybrid dynamic reactive compensation (adopts IGCT as switch, to control the switching of switching power capacitor bank and SVG static reacance generator), it is achieved the device of continuous and stepless reactive-load compensation.TSVG, by active compensation and Passively compensated combination, forms SVG+TSC mixed type compensation scheme.TSC series dynamic reactive compensator adopts the contactless controllable silicon semiconductor module of TSC as switch, hierarchical capacitor group is carried out quickly without transition switching (operating passing zero), by touch screen recording program, transmission carries out logical operations to SVG static reacance generator, signal is transmitted to SVG keyset, trigger and control thyristor switch, switching capacitance, and adopt pseudorandom digital sampler to control, follow load change constantly, compensate system reactive power, improve the efficiency of user load, in TSC system, adopt specific reactor simultaneously, can effectively prevent Harmonics amplification, effectively absorb major part harmonic current, reach the purpose of harmonic wave control.TSVG reactive power compensator is a kind of full-automation, digitized, intelligentized dynamic reactive power compensation equipment, when the switching adding SVG static reacance generator, continuous and stepless reactive-load compensation can be realized, its response speed: will be significantly smaller than 20ms (TSC is 20ms), namely completes the input excision process of all capacitance group in response speed；Various loads all can be played good compensation effect.Compensator adopts three-phase independence control technology to solve the technology that three-phase imbalance impact load compensates.
Reactive power compensator detects the reactive power of inductive load online constantly, timely opening-closing capacitor bank, required capacitive reactive power is provided, therefore the power factor of network system is improved, improve the transmittability of transmission line of electricity and the load capacity of transformator and stabilize the terminal voltage of load end, thus decreasing the loss of power circuit electrical energy, saves energy loss, user is made to obtain suitable economic benefit.Energy conservation and consumption reduction effects is notable, and dynamic compensation power factor will to greatest extent close to setting value, has reduction loss, steady load voltage, increases the functions such as transformer belt loading capability, be the improved replacement regeneration product in reactive power compensation field.
The capacity of Capacitor banks of the present utility model also has multiple combination mode, controls point benefit up to No. 6 capacitors, mends switching altogether, meet the reactive-load compensation demand of the capacity such as 350kVar and various application occasions.
Accompanying drawing explanation
This utility model is described in detail below in conjunction with the drawings and specific embodiments；
Fig. 1 is the performance loop figure of this utility model hybrid dynamic reactive compensation cabinet.
Fig. 2 is a kind of wiring schematic diagram of a TSC thyristor switchable capacitor unit in this utility model hybrid dynamic reactive compensation cabinet.
Fig. 3 is the another kind of wiring schematic diagram of a TSC thyristor switchable capacitor unit in this utility model hybrid dynamic reactive compensation cabinet.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with detailed description of the invention, this utility model is expanded on further.
This utility model is a kind of TSVG mixed type low-voltage dynamic reactive power compensation using secondary principle wiring technique, it is SVG static reacance generator and the combination of TSC thyristor switchable capacitor, it is mainly used in solving existing capacitor compensation cabinet and adopts mechanical contactor switching drawback, and the electric capacity of only thuristor throw-in and throw-off, there are the shortcomings such as discontinuous compensation, to existing capacitor box perfect in shape and function, extensively meet user's request.
TSVG mixed type low-voltage dynamic reactive power compensation, is mainly made up of five big parts: Self Adaptive Control touch screen, noncontacting switch (or electromechanical integration), filter reactance, anti-harmonic wave electric capacity, SVG static reacance generator.Self Adaptive Control touch screen, it may be achieved human computer conversation, setup parameter, mode of operation, typing controls program, can display parameters, input instruction, order can be issued SVG, and operation controls SVG, when system power signal is given to SVG, by the logical operations of recording program, signal is transmitted to SVG keyset, triggers and control thyristor switch, switching capacitance.To system voltage current sampling, instantaneous reactive power can be calculated and compare with the reactive power switching thresholding set, controlling contactless switching device or multichannel electromechanical integrated device, it is achieved electric capacity puts into or excision, and automatic or manual controls SVG static reacance generator.Noncontacting switch is to adopt anti-parallel thyristor module, triggered by zero-cross triggering circuit, eliminate shoving when putting into electric capacity, the electric capacity and cut when electric current is less than the maintenance electric current of thyristor module, therefore do not produce overvoltage during excision electric capacity, be effectively improved the flickering rate of line voltage.Filter reactance and anti-harmonic wave electric capacity constitute bandpass and connects harmonic absorption loop, and network system first-harmonic provides leading reactive power compensation.
nullReferring to Fig. 1，A kind of hybrid dynamic reactive compensation cabinet provided in figure，Including: the terminal 100 of wiring、It is arranged on the current signal sampling circuit module 200 in system incoming line cabinet、Some TSC thyristor switchable capacitor unit 300、In order to regulate and the Temperature and Humidity Control return circuit module 400 of the linear quadratic control of temperature and humidity regulation in switch board、One in order to trigger the triggering signal circuit module 500 of the turn on thyristors in each TSC thyristor switchable capacitor unit、One main loop module 600 that electric energy is provided when working in order to hybrid dynamic reactive compensation cabinet、The switching show circuit module 700 of one switching and SVG work for showing IGCT folding condition in main loop module、For measuring the current measurement circuit module 800 of size of current when capacitor compensation cabinet works、For measuring the voltage measurement circuit module 900 of voltage swing when capacitor compensation cabinet works；For measuring and showing capacitor compensation cabinet work and control the touch screen control return circuit module 1000 of mode of operation, for the loop in capacitor compensation cabinet being controlled the secondary control loop module 1100 regulated, the triggering end of the IGCT in some TSC thyristor switchable capacitor unit 300 is connected with triggering signal circuit module 500, trigger signal circuit module 500, touch screen controls return circuit module 1000 and is connected with secondary control loop module 1100, current measurement circuit module 800, current signal sampling circuit module 200 is connected with secondary control loop module 1100 by terminal 100；Secondary control loop module 1100, voltage measurement circuit module 900, Temperature and Humidity Control return circuit module 400, switching show circuit module 700 are connected with main loop module 600.
Referring to Fig. 2, each TSC thyristor switchable capacitor unit 300 includes A, B, C three-phase switching branch road, wherein be in series with in A, B, C three-phase switching branch road thyristor groups 310,320, a 330 and inductance 340,350,360, A, three electric capacity 370,380,390 in B, C three-phase switching branch road adopt wye connection.Inductance 340,350,360 is used for the dash current suppressing three electric capacity 370,380,390 to cause when putting into electrical network.
Referring to Fig. 3, each TSC thyristor switchable capacitor unit 300 includes A, B, C three-phase switching branch road, wherein being in series with a thyristor groups 310a, 330a and one inductance 340a, 350a, 360a in the biphase switching branch road of A, C, three electric capacity 370a, 380a, 390a in A, B, C three-phase switching branch road adopt triangular form connection.Inductance 340a, 350a, 360a are used for the dash current suppressing three electric capacity 370a, 380a, 390a to cause when putting into electrical network.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (2)
1. a hybrid dynamic reactive compensation cabinet, it is characterised in that including:
The terminal of wiring；
It is arranged on the current signal sampling circuit module in system incoming line cabinet；
Some TSC thyristor switchable capacitor unit；Each TSC thyristor switchable capacitor unit includes A, B, C three-phase switching branch road, in A, B, C three-phase switching branch road, wherein it is in series with a thyristor groups and an inductance or is in series with a thyristor groups and an inductance in A, C two-phase switching branch road, described thyristor groups includes two anti-parallel thyristors, and the capacitor in this TSC thyristor switchable capacitor unit is connected to the grid or excises from electrical network by described thyristor groups；
In order to regulate and the Temperature and Humidity Control return circuit module of the linear quadratic control of temperature and humidity regulation in switch board；
One in order to trigger the triggering signal circuit module of the turn on thyristors in each TSC thyristor switchable capacitor unit；
One main loop module that electric energy is provided when working in order to hybrid dynamic reactive compensation cabinet；
The switching show circuit module of one switching and SVG work for showing IGCT folding condition in main loop module；
For measuring the current measurement circuit module of size of current when capacitor compensation cabinet works；
For measuring the voltage measurement circuit module of voltage swing when capacitor compensation cabinet works；
For measuring and showing capacitor compensation cabinet work and control the touch screen control return circuit module of mode of operation, described touch screen controls to be provided with a touch screen in loop；
For the loop in capacitor compensation cabinet being controlled the secondary control loop module regulated；
The triggering end of the IGCT in described some TSC thyristor switchable capacitor unit is connected with described triggering signal circuit module, described triggering signal circuit module, touch screen control return circuit module and are connected with described secondary control loop module, and described current measurement circuit module, current signal sampling circuit module are connected with described secondary control loop module by described terminal；Described secondary control loop module, voltage measurement circuit module, Temperature and Humidity Control return circuit module, switching show circuit module are connected with described main loop module.
2. a kind of hybrid dynamic reactive compensation cabinet as claimed in claim 1, it is characterised in that the electric capacity in each TSC thyristor switchable capacitor unit adopts wye connection or delta connection to connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521112821.0U CN205377297U (en) | 2015-12-28 | 2015-12-28 | Mixed type dynamic reactive compensation cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521112821.0U CN205377297U (en) | 2015-12-28 | 2015-12-28 | Mixed type dynamic reactive compensation cabinet |
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| CN205377297U true CN205377297U (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825991A (en) * | 2022-03-14 | 2022-07-29 | 思源清能电气电子有限公司 | Topological structure and method for testing power electronic converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825991A (en) * | 2022-03-14 | 2022-07-29 | 思源清能电气电子有限公司 | Topological structure and method for testing power electronic converter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20171228 |