CN107167683A - Load test method based on Multifunctional coil kind equipment testing synthesis parameter device - Google Patents
Load test method based on Multifunctional coil kind equipment testing synthesis parameter device Download PDFInfo
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- CN107167683A CN107167683A CN201710389866.XA CN201710389866A CN107167683A CN 107167683 A CN107167683 A CN 107167683A CN 201710389866 A CN201710389866 A CN 201710389866A CN 107167683 A CN107167683 A CN 107167683A
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- power supply
- voltage
- display control
- current
- measurement
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
Abstract
The present invention relates to a kind of load test method based on Multifunctional coil kind equipment testing synthesis parameter device：The display control section of test device controls sine wave experiment power supply of the program control experiment power supply to equipment under test output voltage continuously adjustabe；It is acquired by the electric current and voltage that measure the experiment power supply that meter is exported to program control experiment power supply；The display control section is carried out after interruption judgement, control the program control experiment power supply to record power attenuation after current value as defined in pilot project until reaching by phase output test power supply in the way of automatic boosting, and three phase power loss is compared and accumulation calculating.The present invention can perform the load test of coil kind equipment (such as transformer) with high efficient and reliable, and automaticity is high, be that electric power detection service work brings great convenience.
Description
Technical field
It is more particularly to a kind of to be integrated based on Multifunctional coil kind equipment the present invention relates to a kind of comprehensive electric testing device
The load test method of parameter test device.
Background technology
Coil kind equipment (such as all kinds of transformers, transformer) occupies extremely important in the various kinds of equipment of power system
Status, and its electrical test project is often more and more complicated compared with project for other equipment.Coil class is directed in the market
Each experiment of equipment all needs to configure a set of Special test instrument substantially, and test apparatus is all more heavy.Therefore one is completed to set
Standby experiment generally requires many instruments.The factors such as place and power supply are limited to, need repeatedly to remove instrument in working at the scene
Before remove after and wiring is repeated several times, operating efficiency is relatively low.
Specifically, in transformer and power transformer electrical test, set using discrete detection
For what is tested.Experiment power supply is generally adjusted using power controling box (pressure regulator).Coordinate various voltmeters, electric current again
The meter such as table and power meter is measured.Power controling box is mainly what is be made up of an automatic coupling voltage regulator, it usually needs artificial
Operation regulation, process of the test needs are artificial to adjust voltage when observing meter, must record corresponding measurement result.To operator
The requirement of member is higher, and operating process is also comparatively laborious, is unfavorable for realizing automatic measurement.With the development of electronic technology, welcome
In the digitized epoch, measuring instrument is also towards intellectuality, and digital development, current most measuring instrument all has been carried out
Digitlization, but experiment electricity is generally still used as using automatic coupling voltage regulator in the experiments such as industrial frequency withstand voltage, idling load and C-V characteristic
Source, substantially based on manual operations.Joint connection in site power controling box and measurement meter are needed during experiment, it is more time-consuming,
Automaticity is not high.
At present both at home and abroad in terms of the research of comprehensive electric testing device or relatively more rare, most of instruments are also all deposited
Single in function, the form of the equipment output result of different manufacturers also disunity is also made to the data analysis sorting and file in later stage
Into many troubles.
The content of the invention
It is an object of the invention to provide a kind of load examination based on Multifunctional coil kind equipment testing synthesis parameter device
Proved recipe method, can bring great convenience for electric power detection service work.
In order to achieve the above object, join the technical scheme is that providing a kind of integrated based on Multifunctional coil kind equipment
The load test method of number test device：
The display control section of test device is according to the user operation instruction received, to control the program control examination of test device
Sine wave experiment power supply from electrical verification source to equipment under test output voltage continuously adjustabe；
The electric current and voltage signal for the experiment power supply that the measurement meter of the test device is exported to program control experiment power supply
It is acquired, and is sent to the display control section and carries out data processing；
The display control section carries out interruption judgement, to judge whether the situation for occurring interrupting measurement；
When there is not the situation for interrupting measurement, program control experiment power supply output test in the way of automatic boosting is controlled
Power supply, by the voltage and corresponding current value in the display control unit member record boost process；
The display control section carries out electric current judgement, to judge whether the electric current of exported experiment power supply reaches experiment
The current setting value of project；
When electric current reaches current setting value, the display control section is recorded and handled to power attenuation value.
Preferably, the equipment under test is three-phase transformer, and the display control section controls the program control experiment power supply,
Boosted by by experiment power supply, until the electric current of experiment power supply reaches the rated current of transformer, and by the display control unit
Member record experiment power supply electric current reaches power attenuation value during rated current；Afterwards, the display control section is to being recorded
Three phase power loss value is compared, and obtains total-power loss to three phase power loss value is cumulative.
Preferably, to the mode of connection of any one phase in tested three-phase transformer, comprising：The program control experiment power supply leads to
The power output end being arranged on test device main frame is crossed, the high pressure that triangle connection is formed on the three-phase transformer is connected to
Lateral coil to apply experiment power supply to it, and the low-voltage side coil on the three-phase transformer forms Y-connection and abcn ends phase
Connection.
Preferably, described interrupt judges further to include：
Key scan, judges to have the button of correspondence measurement interrupt instruction or switch the buttons of other pilot projects to be pressed
When, interrupt measurement；
Over-voltage and over-current judge, judge the voltage or electric current of institute's output test power supply, more than pilot project require voltage or
During current specification value, measurement is interrupted；
Power supply judges, when judging institute's output test power interruptions, interrupts measurement.
Preferably, the display control section, is further included：
The master control borad that 32 ARM single-chip microcomputers are constituted, and the liquid crystal display, non-volatile being connected with the master control partitioned signal
Property memory, printer, button, external memory interface and communication interface；
The master control borad of the display control section, is also scored by internal serial ports and the program control experiment power supply and measurement table
Do not connect, be controlled and data transfer.
Preferably, the program control experiment power supply is provided with the single-chip microcomputer for carrying out SPWM modulation controls, to IPM switch modules
It is controlled, to be driven by realizing that two opposite polarity reference sine waves and two-way triangular carrier are handed over to cut to produce power switch
Dynamic signal.
Preferably, the measurement meter includes measuring current transformer and voltage transformer, with the Current Mutual Inductance
The programmable amplifier that device, voltage transformer are accordingly connected, the analog-digital converter being connected with the programmable amplifier, with the modulus
The single-chip microcomputer of converter connection, and with measuring memory and the serial port module that the single-chip microcomputer of meter is connected.
Load test method of the present invention based on Multifunctional coil kind equipment testing synthesis parameter device, its advantage exists
In：
1st, rational functional module is integrated with test device, testing equipment quantity is effectively reduced；
2nd, the load test of coil kind equipment (such as transformer) is realized to high efficient and reliable, automaticity is high；
3rd, can there is provided the three phase frequency changing power of Frequency Adjustable amplitude modulation based on Power Electronic Technique；
4th, the measurement and calculating of the data such as voltage, electric current, power are realized by single-chip microcomputer and correlation acquisition module, is finally adopted
Liquid crystal display output result is used, and realizes the functions such as drafting exciting characteristic curve；
5th, connection plan is safe and simple, at utmost reduces work on the spot amount.
Test device and its load test method of the present invention, once make in each grid company and equipment manufacturer's input
With, it will directly be brought great convenience for electric power detection service work, the safe operation of power network is effectively ensured, raising power network
Level of security, it is to avoid the generation of major accident, the direct or indirect economic benefit that can be produced is huge.
Brief description of the drawings
Fig. 1 is the connection diagram of display control section in test device of the present invention；
Fig. 2 is the schematic diagram of program control experiment power supply in test device of the present invention；
Fig. 3 is the schematic diagram of measurement meter in test device of the present invention；
Fig. 4 is single-phase pressurization wiring diagram of the test device of the present invention when transformer load loss is tested；
Fig. 5 is the flow chart that test device of the present invention carries out load loss experiment.
Embodiment
As shown in figure 1, Multifunctional coil kind equipment testing synthesis parameter device of the present invention, includes three big parts：It is aobvious
Show control (man-machine interface) part, program control experiment power supply, multifunctional measuring meter.
Wherein, the display control section can receive user operation instruction, control program control experiment power supply and measurement meter
Each work in order, and show, print, preserve measurement result.Using 32 ARM single-chip microcomputers as core in this example, cooperation 320 ×
240 liquid crystal displays are provided with mini-printer as human-computer interaction interface, device, interior for printing out measurement result
Attached nonvolatile memory, for preserving measurement result.External memory interface and communication interface are also configured, for on-line operation.The portion
Parallel circuit is controlled by internal serial ports with program control experiment power supply and measurement meter part and transmitted with data.So that device can root
Automatic measurement is carried out according to the function of user preset.
As shown in Fig. 2 the program control experiment power supply replaces traditional self-coupling using program-controlled electronic voltage regulator
Device, it has pressure-adjustable frequency modulation function, and output voltage frequency stability is good.Based on SPWM modulation principles, two polarity phases are utilized
Anti- reference sine wave is handed over to cut with two-way triangular carrier produces power switch drive signal.Software journey is passed through with single-chip microcomputer in this example
Sequence programming realization SPWM modulating waves, control the work of high-power IPM switch modules, pass through feedback voltage and sampled voltage ratio ratio
Relatively control dutycycle realizes voltage stabilizing.The number for the SPWM modulation techniques design being so controlled by high-performance digital signal processor
Word power supply, the sine wave experiment power supply of exportable voltage continuously adjustabe.
As shown in figure 3, the multifunctional measuring meter, by a piece of High Performance SCM respectively to experiment when voltage,
Current signal carries out real-time sampling calculating, draws the electric parameters such as voltage, electric current, active power, power factor and frequency.In this example
High performance double 16 analog-digital converters are employed, main data acquisition chip are used as, it is ensured that the high accuracy of measurement.Measurement
Principle uses synchronous high-speed Sampling techniques, synchronizes sampling to voltage and current signal, sampled data is stored in into memory
In, then sampled data is carried out according to electrotechnics principle to calculate the measurement result for obtaining each electrical parameter.
Based on the test device, such as inducting-voltage proof, C-V characteristic and the no-load current that can complete voltage transformer
Experiment；At least more than 3 integrated functionalities such as inducting-voltage proof, the short-circuit impedance of 35kV and following voltage class transformer are completed, and
Disposable wiring can be realized, without external any equipment；(need to be purchased in addition) by external experiment power supply, can complete 110kV and
The attribute testing of above main transformer；Capacitive apparatus Resonance Voltage Withstand Test can be carried out as variable-frequency power sources, and simultaneously
With automatic tuning and manual tuning both of which；With multinomial defencive functions such as over-voltage and over-current overload excess temperatures, with automatic liter
Decompression and manually operated both of which.
As shown in figure 4, when test device carries out A addition compression bonded lines in the load loss experiment of three-phase transformer, test
Power output end on device main frame can connect on tested three-phase transformer from the specified tap position in any side of transformer around
Group applies experiment power supply (rated current of rated frequency), and measuring it in the case of short circuit in winding other windings open circuit bears
Load-loss.It is the high-pressure side A for being connected to delta connection in this example, C-terminal, and the low-pressure side Y-connection of transformer and abcn ends
It is connected.Wiring when B, C phase are pressurizeed is similar.
The load loss that the present invention is carried out using the test device is tested, and is by by under power boost to rated current
And preserved after recording powers of laser beam；After terminating Deng three-phase measurement, carry out accumulation calculating and go out total-power loss, and each phase power attenuation
It can show and compare, whole process carries out over-voltage and over-current, power supply status and keyboard interrupt and judged.
As shown in figure 5, load current experiment includes below scheme：It is negative in the human-computer interaction interface selection of display control section
Load-loss pilot project, test device carries out key scan, to perform act corresponding with the project.Interruption judgement is first carried out,
For example when excessively stream judge to find more than load current test determination current threshold (and/or overvoltage judge to find to exceed it is defined
Voltage threshold), or when judging to find power supply accidental interruption by power supply, or scanning discovery presses interruption button or switches it
During the button of his pilot project, measurement is interrupted.
If not interrupting the situation of measurement, test device can be by program control experiment power supply, in the way of automatic boosting
Experiment power supply is mutually provided to wherein the one of three-phase transformer to be measured, and the voltage and its corresponding current value to being powered up are remembered
Record；Excessively stream judgement is carried out, judges whether the actual current value powered up reaches (specified without the numerical value more than test determination
Electric current) after, the power attenuation value to this phase is recorded.Judge whether to complete the record of all three phase power loss values,
If it is not complete, boosting initialization is then carried out, the initial value that the voltage of experiment power supply is returned to before boosting, so as in switching
For the operating process that automatic boosting is recorded to power attenuation value can be re-started after another phase connection；If all three phase powers
The record of loss value is complete, then can carry out the calculating processing of load loss.During experiment, test device can be on man-machine boundary
Face shows the various information such as the corresponding parameter of pilot project and its adjustment numerical value, result of the test.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. a kind of load test method based on Multifunctional coil kind equipment testing synthesis parameter device, it is characterised in that：
The display control section of test device is according to the user operation instruction received, to control the program control experiment electricity of test device
Sine wave experiment power supply from source to equipment under test output voltage continuously adjustabe；
The electric current and voltage signal for the experiment power supply that the measurement meter of the test device is exported to program control experiment power supply are carried out
Collection, and it is sent to the display control section progress data processing；
The display control section carries out interruption judgement, to judge whether the situation for occurring interrupting measurement；
When there is not the situation for interrupting measurement, program control experiment power supply output test electricity in the way of automatic boosting is controlled
Source, by the voltage and corresponding current value in the display control unit member record boost process；
The display control section carries out electric current judgement, to judge whether the electric current of exported experiment power supply reaches pilot project
Current setting value；
When electric current reaches current setting value, the display control section is recorded and handled to power attenuation value.
2. load test method as claimed in claim 1, it is characterised in that
The equipment under test is three-phase transformer, and the display control section controls the program control experiment power supply, by mutually by experiment
Power boost, until the electric current of experiment power supply reaches the rated current of transformer, and is tested by the display control unit member record
Source current reaches power attenuation value during rated current；Afterwards, the display control section is damaged to the three phase power recorded
Consumption value is compared, and obtains total-power loss to three phase power loss value is cumulative.
3. load test method as claimed in claim 1 or 2, it is characterised in that
To the mode of connection of any one phase in tested three-phase transformer, comprising：The program control experiment power supply is by being arranged on survey
The power output end on main frame is put in trial assembly, be connected on the three-phase transformer formed triangle connection high pressure lateral coil come to
It applies experiment power supply, and the low-voltage side coil formation Y-connection and abcn ends on the three-phase transformer are connected.
4. the load test method as described in any one in claim 1-3, it is characterised in that
Described interrupt judges further to include：
Key scan, when judging to have the button of correspondence measurement interrupt instruction or switching the buttons of other pilot projects and be pressed, in
Disconnected measurement；
Over-voltage and over-current judges, judges the voltage or electric current of institute's output test power supply, more than the voltage or electric current of pilot project requirement
During setting, measurement is interrupted；
Power supply judges, when judging institute's output test power interruptions, interrupts measurement.
5. load test method as claimed in claim 1, it is characterised in that
The display control section, is further included：
The master control borad that 32 ARM single-chip microcomputers are constituted, and be connected with the master control partitioned signal liquid crystal display, non-volatile deposit
Storage, printer, button, external memory interface and communication interface；
The master control borad of the display control section, is also connected respectively by internal serial ports with the program control experiment power supply and measurement table meter
Connect, be controlled and data transfer.
6. load test method as claimed in claim 5, it is characterised in that
The program control experiment power supply is provided with the single-chip microcomputer for carrying out SPWM modulation controls, to be controlled to IPM switch modules, with
Power switch drive signal is produced by realizing two opposite polarity reference sine waves with the friendship section of two-way triangular carrier.
7. load test method as claimed in claim 6, it is characterised in that
The measurement meter includes measuring current transformer and voltage transformer, with the current transformer, mutual induction of voltage
The programmable amplifier that device is accordingly connected, the analog-digital converter being connected with the programmable amplifier is connected with the analog-digital converter
Single-chip microcomputer, and with measuring the memory that is connected of single-chip microcomputer and serial port module of meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389866.XA CN107167683A (en) | 2017-05-27 | 2017-05-27 | Load test method based on Multifunctional coil kind equipment testing synthesis parameter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389866.XA CN107167683A (en) | 2017-05-27 | 2017-05-27 | Load test method based on Multifunctional coil kind equipment testing synthesis parameter device |
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| CN107167683A true CN107167683A (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710389866.XA Pending CN107167683A (en) | 2017-05-27 | 2017-05-27 | Load test method based on Multifunctional coil kind equipment testing synthesis parameter device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169671A (en) * | 2018-02-05 | 2018-06-15 | 日立电梯（中国）有限公司 | Contactor service life number Forecasting Methodology, device and computer equipment in elevator |
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| CN102707173A (en) * | 2012-06-11 | 2012-10-03 | 吉林省电力有限公司延边供电公司 | Tester |
| CN103901332A (en) * | 2014-04-23 | 2014-07-02 | 国网上海市电力公司 | Three-phase frequency doubling sensing voltage-withstand test device |
| CN203720282U (en) * | 2014-01-09 | 2014-07-16 | 上海思创电器设备有限公司 | Transformer comprehensive parameter testing device |
| JP2014199209A (en) * | 2013-03-29 | 2014-10-23 | パナソニック株式会社 | Sensor unit, electric power measurement unit and electric power measurement system |
| CN204495898U (en) * | 2015-01-30 | 2015-07-22 | 国网上海市电力公司 | A kind of transformer superpotential on-line monitoring system |
-
2017
- 2017-05-27 CN CN201710389866.XA patent/CN107167683A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707173A (en) * | 2012-06-11 | 2012-10-03 | 吉林省电力有限公司延边供电公司 | Tester |
| JP2014199209A (en) * | 2013-03-29 | 2014-10-23 | パナソニック株式会社 | Sensor unit, electric power measurement unit and electric power measurement system |
| CN203720282U (en) * | 2014-01-09 | 2014-07-16 | 上海思创电器设备有限公司 | Transformer comprehensive parameter testing device |
| CN103901332A (en) * | 2014-04-23 | 2014-07-02 | 国网上海市电力公司 | Three-phase frequency doubling sensing voltage-withstand test device |
| CN204495898U (en) * | 2015-01-30 | 2015-07-22 | 国网上海市电力公司 | A kind of transformer superpotential on-line monitoring system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169671A (en) * | 2018-02-05 | 2018-06-15 | 日立电梯（中国）有限公司 | Contactor service life number Forecasting Methodology, device and computer equipment in elevator |
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Application publication date: 20170915 |