CN205786930U - A kind of electronic power transformer electric energy quality detection device - Google Patents

A kind of electronic power transformer electric energy quality detection device Download PDF

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Publication number
CN205786930U
CN205786930U CN201620704435.9U CN201620704435U CN205786930U CN 205786930 U CN205786930 U CN 205786930U CN 201620704435 U CN201620704435 U CN 201620704435U CN 205786930 U CN205786930 U CN 205786930U
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CN
China
Prior art keywords
power
transformer
electronic
power transformer
electric energy
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Withdrawn - After Issue
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CN201620704435.9U
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Chinese (zh)
Inventor
刘君
曾鹏
曾华荣
马晓红
陈仕军
张迅
刘宇
陈沛龙
田承越
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Electric Power Research Institute of Guizhou Power Grid Co Ltd
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Electric Power Research Institute of Guizhou Power Grid Co Ltd
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Priority to CN201620704435.9U priority Critical patent/CN205786930U/en
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Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model discloses a kind of electronic power transformer electric energy quality detection device, relate to electrical network Power Quality Detection, it includes electronic power transformer PET, electron electric power load P EL, background control system.Different technologies preferred version, the electronic power transformer output characteristics of different control strategy can be detected by this detecting system, particularly can detect its output power quality parameter, effectively solve electronic power transformer output Power Quality Detection problem, improve the conforming product rate of electronic power transformer.

Description

A kind of electronic power transformer electric energy quality detection device
Technical field
This utility model relates to a kind of electric energy quality detection device, particularly electronic power transformer Power Quality Detection dress Put.
Background technology
In recent years, along with high-power electronic component and the development of control technology thereof, one converts skill by electron electric power Art realizes voltage transformation and the novel transformer-electronic power transformer PET(Power of energy transmission of power system Electronic Transformer) it is applied to power system more and more, electronic power transformer becomes with traditional electric power Depressor is compared, and electronic power transformer volume is little, weight is little, open circuit loss is little, need not the advantages such as insulating oil, completes routine The transformation of transformator, isolate and transmit energy while, may also function as the effect of electric energy quality controller, be a kind of multi-functional Novel transformer.
After one electronic power transformer is produced, in addition to routine test, at present about electronic power transformer Test, performs essentially according to GB1094.3-2003 standard, but the output characteristics for electronic power transformer is tested, particularly The test carrying out detecting for its output quality of power supply not yet has corresponding international and national standard, owing to lacking corresponding detection, Cannot ensure that each electronic power transformer quality of power supply output characteristics is satisfied by technology requirement.Once occur without electric energy matter Measure the qualified detection of output characteristics and cause product there is technological deficiency and use if production scene, arise that line voltage Fluctuation and flickering, voltage waveform distortion, input imbalance of three-phase voltage, Voltage Drop and short term outage and frequency shift (FS) etc. Problem, thus have a strong impact on the safety of electrical network.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electronic power transformer electric energy quality detection device, with Solve electronic power transformer because of do not carry out the voltage ripple of power network of Power Quality Detection appearance and flickering, voltage waveform distortion, Input imbalance of three-phase voltage, Voltage Drop and the problem such as short term outage and frequency shift (FS).
For solving the problems referred to above, this utility model provides a kind of electronic power transformer electric energy quality detection device, it Including electron electric power load P EL, electronic power transformer PET, current transformer, voltage transformer, public electric wire net, the quality of power supply Analyser, background control system, the first switch QF, second switch, the first ac bus, the second ac bus.
Electron electric power load P EL is connected with the first ac bus through the first switch;First ac bus becomes with electron electric power Depressor PET outfan connects;Electronic power transformer PET input is connected with second switch;Second switch and the second exchange mother Line is connected;Public electric wire net and the second ac bus connect;Current transformer is arranged on the second ac bus, and respectively with electronics Electrical load PEL and power quality analyzer connect;Voltage transformer is arranged on the second ac bus, and electric with electronics respectively Power load P EL and power quality analyzer connect;Power quality analyzer, electron electric power load P EL respectively with Background control system System connects.
Described electron electric power load P EL is impulse modulation AC type.
Described electronic power transformer PET is voltage source converter.
Described current transformer is electronic current mutual inductor.
Described voltage transformer is electronic type voltage transformer.
Described power quality analyzer is power quality parameter measurement apparatus.
Described background control system is desktop computer, panel computer or notebook computer.
Use technique scheme of the present utility model, by electric power electric transformer, electron electric power load, the quality of power supply The electronic power transformer electric energy matter of analyser, current transformer, voltage transformer, public electric wire net, background control system composition Amount detecting device, after power electronics load accesses electron electric power electric energy quality detection device, simulates various work condition environment.Due to Network load changes, and operation of power networks parameter changes immediately, intrasystem power quality analyzer, current transformer, The electrical network running parameter detected is sent to background control system by voltage transformer the most respectively, by background control system according to new Detection parameter and initial parameter contrast, utilize power quality data analyze computed in software go out the average of power quality parameter Value, minima and qualification rate, analyze computed in software by power quality data and go out electrical power transformator output quality of power supply ginseng Number qualification rates, export the qualified products application of the quality of power supply in production scene by electronic power transformer, can solve electrical network electricity Pressure fluctuation and flickering, voltage waveform distortion, input imbalance of three-phase voltage, Voltage Drop and short term outage and frequency shift (FS) Etc. technical problem.
This utility model have employed AC type electron electric power load P EL(Power based on pulse modulation technique Electronic Load) after, electrical load PEL can simulate multiple variable working condition load, can simulate resistance sense load, also can simulate Capacitance resistance load, its output voltage is 400 volts;And electron electric power is loaded with electric energy feedback unit, the energy of detection all can be returned Feed electrical network.
The electronic power transformer PET that this utility model uses is a kind of based on voltage source converter, and its input stage is adopted Use three-phase four-wire system structure, be respectively provided with independent voltage source inverter mutually, owing to low-pressure side current ratio is relatively big, be all provided with mutually Put a LC wave filter.Output stage uses the series-parallel cascade system of single-phase voltage source converter (VSC) module and system voltage Match, utilize phase-shifting carrier wave modulation technique to improve equivalent switching frequency, it is possible to decrease the requirement to boost inductance harmonics restraint. Owing to have employed based on voltage source converter in this technology preferred version so that electronic power transformer has response speed The advantages such as degree is fast, Electro Magnetic Compatibility is good.
This utility model use electronic current mutual inductor, utilize its excellent insulating properties, cost low, run transient state Respond, good stability, there is no that magnetic coupling, transient response scope are big, frequency response range width, volume are little, lightweight, digitized The characteristics such as output, are effectively improved the certainty of measurement of transformer.
This utility model use electronic type voltage transformer, utilize its excellent insulating properties, cost low, run transient state Respond, good stability, there is no that magnetic coupling, transient response scope are big, frequency response range width, volume are little, lightweight, digitized The characteristics such as output, are effectively improved the certainty of measurement of transformer.
The power quality analyzer that this utility model uses is LCT-FB602 type portable electric energy quality analysis, its detection The voltage fluctuation and flicker of electrical network, voltage waveform distortion, input imbalance of three-phase voltage, Voltage Drop and short term outage and The power quality parameters such as frequency shift (FS), use high-speed dsp number owing to LCT-FB602 type portable electric energy quality analysis gathers front end The black box design of WP, it is not necessary to multioperation and complex display excessively, and fast operation, good reliability, strong interference immunity, Wiring is without dismounting, convenient to operation.
The background control system that this utility model uses is a desktop computer, the power quality data analysis used because of it Software, based on WINDOWS platform, can directly measure and data management, completes data statistics, analyzes and the operation such as printing.Before Hold and be connected at a high speed with using RJ45 netting twine between backstage, can realize observing at a distance and manipulating, safe and free.Can monitor in real time The output quality of power supply of electronic power transformer PET, including: flickering, voltage dip, voltage swell, interruption, transition, imbalance, The power quality parameters such as harmonic wave, m-Acetyl chlorophosphonazo, signal voltage, RMS virtual value, power, power factor and electric flux;Also electricity can be controlled The discharge current of sub-electrical load PEL, simulation resistance sense load and capacitance resistance load;Also can be to electron electric power load P EL relevant parameter It is configured.
In sum, use electronic power transformer electric energy quality detection device, electron electric power transformation can be solved completely Device is not because carrying out voltage ripple of power network and flickering, voltage waveform distortion, the input three-phase voltage injustice of Power Quality Detection appearance Weighing apparatus, Voltage Drop and the problem such as short term outage and frequency shift (FS), can use it for distributed energy access system can be real Existing quality of power supply regulation, thus provide high-quality electric energy for load, regulate dress without the quality of power supply adding other in addition Put, be greatly saved cost.
Accompanying drawing explanation
Fig. 1 is electronic power transformer electric energy quality detection device schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, so that those skilled in the art can be with reference to saying Bright book is carried out.
Fig. 1 shows electronic power transformer electric energy quality detection device schematic diagram of the present utility model, and it includes electronics Electrical load PEL1, electronic power transformer PET2, current transformer 3, voltage transformer 4, public electric wire net 5, the quality of power supply are divided Analyzer 6, background control system 7, first switch QF8, second switch the 9, first ac bus the 10, second ac bus 11.
Electron electric power load P EL1 is connected with the first ac bus 10 through the first switch 8.
First ac bus 10 is connected with electronic power transformer PET2 outfan;Electronic power transformer PET2 input It is connected with second switch 9.
Second switch 9 is connected with the second ac bus 11;Public electric wire net 5 is connected with the second ac bus 11.
Current transformer 3 is arranged on the second ac bus 11, and respectively with electron electric power load P EL1 and the quality of power supply Analyser 6 connects.
Voltage transformer 4 is arranged on the second ac bus 11, and respectively with electron electric power load P EL1 and the quality of power supply Analyser 6 connects.
Power quality analyzer 6, electron electric power load P EL1 connect with background control system 7 respectively.
When public electric wire net 5 is charged and powers normal, the supply voltage of public electric wire net 5 has been arrived on the second bus 11;Close Upper second switch 9, supply voltage has been arrived the input of electronic power transformer 2;The output end voltage of electronic power transformer 2 Arrive on the first bus 10;Close the first switch 8, then electron electric power load P EL1 and the outfan of electronic power transformer 2 Connect;Start and be arranged on the current transformer 3 on the second bus 11 and voltage transformer 4;Start power quality analyzer 6;Open Move the computer of background control system 7 and open the most mounted power quality data analysis software.
As it has been described above, in the computer of background control system 7 of the present utility model, pat at power quality data analyzer tube Electronic power transformer PET2, electronic current transducer 3, electronic voltage mutual induction device 4, power quality analyzer can be monitored in platform The various power quality parameters of 6 outputs, including: flickering, voltage dip, voltage swell, interruption, transition, imbalance, harmonic wave, The power quality parameters such as harmonic wave, signal voltage, RMS virtual value, power, power factor and electric flux.And electron electric power is loaded PEL1 relevant parameter carries out initial setting up.
After completing the initial setting up to electron electric power load P EL1 relevant parameter, according to putting of electron electric power load P EL1 Electricity electric current, simulates the resistance sense load under various operating mode and capacitance resistance load, due to negative in power quality data analysis management platform Load changes, and electronic power transformer PET2 output parameter, electronic current transducer 3 measure parameter, electronic voltage mutual induction device 4 Measure parameter, the analytical data of power quality analyzer 6 also can occur to change accordingly, and these data will be transported to backstage control System processed.
After background control system 7 receives the various power quality parameters of detection, system will be under various variable working condition The power quality parameter of electronic power transformer output carries out statistics and analysis.System is utilized to automatically generate the system specifying the time period Meter form, system provides detailed data analysis result, draws multiple change curve, just can observe each phase curve according to curve Or contrast three-phase comprehensive curve.Finally calculate meansigma methods, minima and qualification rate, just can be accurately judged to electron electric power transformation Device PET(2) the output quality of power supply whether meet standard-required.
By above-mentioned technological means, completing the output Power Quality Detection of electronic power transformer, the technical program is complete Entirely can solve electronic power transformer because not carrying out voltage ripple of power network and flickering, the voltage waveform of Power Quality Detection appearance Distortion, input imbalance of three-phase voltage, Voltage Drop and the problem such as short term outage and frequency shift (FS).Thus improve product Qualification rate, preferably evaded the security risk brought because of the defective use of product, it also avoid because product is defective simultaneously Use and produce the tremendous economic loss that fault is brought.

Claims (7)

1. an electronic power transformer electric energy quality detection device, it includes electronic power transformer PET(2), electron electric power Load P EL(1) and background control system (7), it is characterised in that: described electron electric power load P EL(1) switch (8) through first It is connected with the first ac bus (10);First ac bus (10) and electronic power transformer PET(2) outfan is connected;Electronics Power transformer PET(2) input is connected with second switch (9);Second switch (9) is connected with the second ac bus (11);Public Common-battery net (5) is connected with the second ac bus (11);Current transformer (3) is arranged on the second ac bus (11), and respectively With electron electric power load P EL(1) and power quality analyzer (6) be connected;Voltage transformer (4) is arranged on the second ac bus (11) on, and respectively with electron electric power load P EL(1) and power quality analyzer (6) connect;Power quality analyzer (6), electricity Sub-electrical load PEL(1) connect with background control system (7) respectively.
2. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described electronics Electrical load PEL(1) it is impulse modulation AC type.
3. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described electronics Power transformer PET(2) it is voltage source converter.
4. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described electric current Transformer (3) is electronic current mutual inductor.
5. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described voltage Transformer (4) is electronic type voltage transformer.
6. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described electric energy Mass-synchrometer (6) is power quality parameter measurement apparatus.
7. a kind of electronic power transformer electric energy quality detection device described in claim 1, it is characterised in that: described backstage Control system (7) includes desktop computer, panel computer or notebook computer.
CN201620704435.9U 2016-07-06 2016-07-06 A kind of electronic power transformer electric energy quality detection device Withdrawn - After Issue CN205786930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620704435.9U CN205786930U (en) 2016-07-06 2016-07-06 A kind of electronic power transformer electric energy quality detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620704435.9U CN205786930U (en) 2016-07-06 2016-07-06 A kind of electronic power transformer electric energy quality detection device

Publications (1)

Publication Number Publication Date
CN205786930U true CN205786930U (en) 2016-12-07

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Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105911403A (en) * 2016-07-06 2016-08-31 贵州电网有限责任公司电力科学研究院 Electric power quality detection system of power electronic transformer
CN112230094A (en) * 2020-11-11 2021-01-15 广东电网有限责任公司 Teaching device for simulating power quality

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105911403A (en) * 2016-07-06 2016-08-31 贵州电网有限责任公司电力科学研究院 Electric power quality detection system of power electronic transformer
CN112230094A (en) * 2020-11-11 2021-01-15 广东电网有限责任公司 Teaching device for simulating power quality

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AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20161207

Effective date of abandoning: 20190215