CN105510735A - Intelligent distribution transformer integrated test and fault determination test handcart - Google Patents
Intelligent distribution transformer integrated test and fault determination test handcart Download PDFInfo
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- CN105510735A CN105510735A CN201510844844.9A CN201510844844A CN105510735A CN 105510735 A CN105510735 A CN 105510735A CN 201510844844 A CN201510844844 A CN 201510844844A CN 105510735 A CN105510735 A CN 105510735A
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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
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an intelligent distribution transformer integrated test and fault determination test handcart. The handcart comprises a housing, wheels and a handle, wherein the housing is an anti-high-magnetic-interference housing, the housing is internally provided with an integrated controller, an integrated wiring unit, an environment control detection unit and a safety control protection unit, the integrated controller is respectively connected with the environment control detection unit, the safety control protection unit and the integrated wiring unit and is connected with a central control PC, and each external-end wiring port of the integrated wiring unit is arranged at the side wall of the housing. The intelligent distribution transformer integrated test and fault determination test handcart realizes a modular design and greatly reduces the test time and the labor cost; and concentrated and simple equipment control is realized, a power equipment preventative test management system is designed, completed and configured, and unified data management and diagnosis analysis are also realized.
Description
Technical field
The present invention relates to intelligent transformer technical field of measurement and test, particularly relate to a kind of Intelligent distribution transformer compbined test and fault distinguishing test trolley, be applicable to the conventional test of 10kV and above substation transformer and main electrical equipment, and the failure cause of failure transformer differentiates and comprehensive diagnos.
Technical background
At present, more abroad than in the electric system of more developed country, transformer test adopts the mode of power test platform mostly.And in domestic electric system, just, function easy test apparatus, such as power cable pressure-resistant tester etc. single in some pilot projects of use.Or simply test apparatus is fixed onboard, form mobile high-voltage testing laboratory.Can think, in domestic electric system, not use the portable hand propelled substation transformer compbined test, the fault distinguishing testing apparatus that realize highly collection control.
Along with the development of electrical network, substation transformer is also large towards capacity, the form development of broad covered area, and the fault of power transformer may cause more great harm and impact to electric system and user, therefore, reduce and prevent their fault tool to be of great significance.In order to realize the defect finding power transformer more in time, more delicately, reducing and having a power failure, improve power supply reliability, the relevant device of Intelligent distribution transformer compbined test and fault distinguishing test trolley also receives the attention of external a lot of research institution.By the Study and Development to equipment, effectively can reflect the real work situation of equipment, thus more correct judgement is made to equipment running status.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of Intelligent distribution transformer compbined test and fault distinguishing test trolley, avoid in a large number consuming time, effort, rely on the back work of external unit, simplify flow process, shorten the time, also reduce the numerous risk causing equipment impaired in handling process of checkout equipment.Moreover, can also field personnel be reduced while several times are increased work efficiency, reduce labour intensity, improve test condition.Have the advantages that integration of equipments degree is high, automatization level is high, service efficiency is high, contribute to electric system site test technology development and solve undermanned and production task expand between contradiction, thus the safe and reliable operation of support equipment, its wide market.
For network distribution transformer One's name is legion, detection difficult and affect power supply reliability, the features such as test job is heavy, intend adopting cart type substation transformer compbined test for the ruuning situation of network distribution transformer and the testing requirement of different phase, fault diagnosis comprehensive test device, thus the efficiency of electrical test can be improved comprehensively, level and quality, alleviate instrument handling workload heavy in process of the test, improve dirigibility and the maneuverability of site test work, utilize simultaneously and operate easily, rapidly failure transformer is diagnosed, whether judgment device duty is normal exactly, Timeliness coverage equipment deficiency and hidden danger, improve transformer reliability of operation and technology management level largely, for the state-detection realizing equipment provides foundation.
For achieving the above object, the present invention realizes by following technical solution:
A kind of Intelligent distribution transformer compbined test and fault distinguishing test trolley, comprise housing, wheel and handle, described housing is anti-strong magnetic interference housing, enclosure interior arranges integrated manipulator, integrated wiring unit, environmental Kuznets Curves detecting unit and security control protected location, described integrated manipulator comprises with lower module: no-load transformer load characteristic test module, transformer noload losses characteristic test module, transformer impedance drop characteristic test module, transformer dc voltage endurance test module, transformer alternating voltage endurance test module and fault distinguishing test module, integrated manipulator respectively with environmental Kuznets Curves detecting unit, security control protected location, integrated wiring unit connects and center-control PC connects, each outer termination line cap of integrated wiring unit is arranged at housing sidewall.
Described transformer fault differentiates that test module comprises direct current resistance detection, insulation resistance and absorptance and polarization index in oil and detects.
Compared with prior art, the present invention has the following advantages:
By the design of systematization, hommization, the Key experiments instrument needed for electric power equipment on-site State Overhaul Test and repairing, equipment, annex are carried out miniaturization, portability design, makes it easy to carry or be configured on trolley.Meanwhile, pertinent instruments, equipment can carry out dismantling and assembling by modular design easily, are convenient to censorship and maintenance.Realize portable testing set design, volume is little, lightweight; Realize wiring simple, be easy to operation; Realize modular design, meet general international standard (IEC76, ANSI/IEEEC57.12.90); Can full-automatic testing, greatly reduction test duration and human cost; Simple equipment can be concentrated to control, omnibearing test report; Design configuration power equipment preventive trial management system, unified data management and diagnostic analysis; Retain be easy to product line from now on expand and with the compatibility of miscellaneous equipment.
Accompanying drawing explanation
Fig. 1 is a kind of Intelligent distribution transformer compbined test and fault distinguishing test trolley exterior contour structural representation.
Fig. 2 is the schematic diagram that integrated manipulator is connected alternately with unit.
Wherein: 1-housing, 2-wheel, 3-handle, 4-center-control PC, 5-Wiring port.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is described in further detail.
A kind of Intelligent distribution transformer compbined test and fault distinguishing test trolley, comprise housing 1, wheel 2 and handle 3, described housing 1 is anti-strong magnetic interference housing, housing 1 inside arranges integrated manipulator, integrated wiring unit, environmental Kuznets Curves detecting unit and security control protected location, described integrated manipulator comprises with lower module: no-load transformer load characteristic test module, transformer noload losses characteristic test module, transformer impedance drop characteristic test module, transformer dc voltage endurance test module, transformer alternating voltage endurance test module and fault distinguishing test module, integrated manipulator respectively with environmental Kuznets Curves detecting unit, security control protected location, integrated wiring unit connects and center-control PC4 connects, each outer termination line cap 5 of integrated wiring unit is arranged at housing 1 sidewall.
Described no-load transformer load characteristic test module:
1, can the no-load current of measuring transformer, open circuit loss, short-circuit voltage, short circuit (load) loss.
2, can harmonic test be carried out, analyze to 31 subharmonic.
3, instrument internal carries out range switching automatically, and allow measuring voltage, range of current wide, wiring is simple.
When 4, doing the zero load of three-phase transformer, load test, whether the wiring of instrument energy automatic decision is correct, and shows the vector plot of three-phase voltage, electric current.
5, unit can complete the load test under the substation transformer total current of below 1000KVA; The load test (under the rated current of 1/3rd, instrument can be converted to the load loss parameter under rated current) of the substation transformer of below 3150KVA can be completed under 1/3rd rated current.
6, all test results carry out correlation-corrected all automatically.Instrument can carry out such as automatically: the multiple corrections such as waveform correction, temperature correction, the correction of non-rated voltage, non-rated current correction, make test result accuracy higher.
7, instrument can by user preset 40 groups of test specimen parameters, and these parameters can be deleted at any time as required and increase, very easy to use.
8, panel type thermal printer, can on-the-spot printing speed test findings.
9, data (test product setting, measurement result, test duration etc.) possess power down storage and function of browse, can store 500 groups of experimental results, can transmit data with computer interconnection.
10, allow external voltage mutual inductor summation current transformer to carry out expanded range measurement, the test specimen of arbitrary parameter can be measured.
11, testing power supply adopts high pressure 40kV & 10mA steady voltage source and 240A big current constant current source.
Described transformer noload losses characteristic test module:
1, this instrument internal adopts advanced A/D synchronous A.C sampling and Digital Signal Processing, simple to operate, easy-to-connect, and data accurately and reliably, solve a difficult problem for distribution transformer capacity test, and can show, measurement data that printing user is concerned about.
2, this instrument is mainly used in the capacity check of substation transformer, and the experiment power supply carried once charges and can complete the test of 100 2500KVA and following distribution transformer capacity.
Active part: voltage measurement scope: 0 ~ 10V, current measuring range: 0 ~ 10A;
Passive part: the wide amount limit of voltage measurement scope: 0 ~ 750V;
The inner all automatic switching ranges of current measuring range: 0 ~ 100A; Voltage, electric current, frequency: ± 0.2%;
Power: ± 0.5%(COS φ >0.1), ± 1.0%(0.02 working temperature :-10 DEG C ~+40 DEG C;
Working power: exchange 160V ~ 400V;
Volume: 40cm × 32cm × 18cm
Described transformer impedance drop characteristic test module:
Transformer impedance drop characteristic test module is for carrying out the instrument of low-voltage short-circuit impedance measurement to 6KV level and above main-transformer under on-the-spot and laboratory condition.Instrument internal adopts the Digital Signal Processings such as voltage, electric current high-precise synchronization AC sampling and FFT, and measurement data is accurate, stable.This instrument adopts three-phase or single-phase metering system, only needs low-pressure side short circuit, and high-pressure side non-test mutually need not short circuit, and after selecting transformer connection, one-shot measurement can calculate the short-circuit impedance of every phase automatically.Instrument has low current to test conversion automatically to rated current function, is applicable to onsite application.This instrument can synchro measure voltage, electric current, power, supply frequency.Instrument can record test data automatically, built-in not power down storer, can longer-term storage measurement data, instrument carries high speed thermal printer, can field print test data, and instrument carries large color screen liquid crystal display, whole menu in Chinese and operation indicating, simple and direct-viewing operation.Its functional characteristics and purposes: measuring accuracy is high, the measuring accuracy of the basic parameter such as electric current, voltage is all better than 0.1%. system stability, antijamming capability is strong, system adopts software digital filter, hardware anti-aliasing filtering Anti-Jamming Technique, and the stable testing degree of system and antijamming capability are all improved a lot than same quasi-instrument.Verification, testing instruments adopt the NORMA4000 of LEM company, and the equipment of production can precision be traced to the source.Three independently voltage and three independently electric current input channels, Measurement channel adopts 16bit height A D converter, and all Channel Synchronous collections, make power calculation accuracy have basic guarantee, and HR1100 meets the wiring metering system of all transformers.Still can Measurement accuracy transformer impedance value under voltage, current waveform Severe distortion and low power factor.All test channel are completely isolated, independent, automatically regulate the change of external PT, CT of all input channels of range ability to set respectively.
Described transformer dc voltage endurance test module:
Transformer dc voltage endurance test module is mainly applicable to electric power overhaul department and carries out DC voltage withstand test to transformer, high-voltage switch equal-height pressure electrical equipment.Its application PWM pulse modulation technology and high-power IGBT device, theoretical according to Electro Magnetic Compatibility, adopt the measures such as special shielding, isolation and ground connection.Make transformer dc voltage endurance test module achieve high-quality, portable and can bear rated voltage electric discharge and do not damage.Transformer dc voltage endurance test module has multi-protective function, as: low pressure overcurrent, low pressure overvoltage, high-pressure and overflowing, high pressure overvoltage, zero position protection, earth-free protection etc.Transformer dc voltage endurance test module adopts fault to sample special sensor, and actuation time is nanosecond, and light isolated component is also nanosecond, and actuation time generally can turn off direct current major loop completely in 10 microseconds.The quick turn-off protection of driving signal adopts sensor special sampling at output terminal; reaction time is nanosecond; by the light isolated component of nanosecond and the analog switch of nanosecond; the driving signal of power amplifier is cut off by overall process in 2 microseconds; ensure, when output short-circuit, not damage power device.
Described transformer alternating voltage endurance test module:
The series resonance that the reactor L of transformer alternating voltage endurance test module and test specimen electric capacity C forms has a fixing resonance frequency
when test frequency equals this frequency, this circuit generation resonance.By this principle, provide power supply to give exciting transformer by variable frequency power source, press in exciting transformer transformation becomes and add on L and test specimen electric capacity C.By changing variable frequency power source output frequency, making loop be in series resonance state, then regulating variable frequency power source output voltage, making the magnitude of voltage that voltage on test product reaches required.
Described transformer fault differentiates that test module comprises direct current resistance detection, insulation resistance and absorptance and polarization index in oil and detects.
Winding D.C. resistance is tested: the highest 100ADC
Insulation resistance and absorptance, polarization index
Power factor/dielectric loss factor (tan δ+insulation electric capacity):
The highest 12kV, 300mA/ frequency range 15-400Hz
Transformer alternating voltage endurance test module: the highest 40kV/10mA
Described direct current resistance detects and fault diagnosis
Winding in Power Transformer can be equivalent to the series loop of an inductance and resistance R.The fundamental measurement circuit of winding D.C. resistance.Close a switch K, and loop-voltage equation formula is: E=L(di/dt) iR.Consider the imperfection of switch, if the moment of voltage E is t=0 after closing a switch, wink now in circuit is from formula, during measuring transformer winding D.C. resistance, no matter circuit state is how, only need measure the i(t1 in formula successively), i(t2), i(t3), the value of R can be obtained under the condition that electrical source voltage E is known.Therefore Measuring Time can be made short arbitrarily, to realize the direct current resistance R of Quick Measurement Winding in Power Transformer.The outstanding advantages of this method is, the steady state (SS) fundamentally eliminating circuit, on the impact of measuring, can realize Quick Measurement to greatest extent.This is that other measuring method is beyond one's reach, and which overcomes power supply capacity needed for traditional measurement method large and seal in the additional measuring sensor such as resistance, electric capacity to the impact of accuracy of measurement.
Each test module can adopt Shenzhen to answer Science and Technology Ltd.'s product.
The all test data of high voltage electrical test all can be stored in management system, and can directly show and print.Substation transformer electrical test system management software adopts man-machine friendly interface, and test process record and Online Help information are set, testing crew is guided to carry out proper operation, operating process is clear, if occur in test process, equipment failure or test data transfinite, system should send alarm signal, and screen display fault type or error message, test result can derive and store separately from computing machine, computing machine Ji Kong function software, there is provided multiple report printing mode flexibly that this test can be selected to print, period experimental report prints, defective notice prints and empty report printing, and can the automatic report generation page number and form catalogue, system can also provide the test findings inquiry mode of various ways, in the test period, test of many times is carried out to same equipment, rear single test result does not cover a front test findings.
Claims (2)
1. an Intelligent distribution transformer compbined test and fault distinguishing test trolley, it is characterized in that: comprise housing (1), wheel (2) and handle (3), described housing (1) is anti-strong magnetic interference housing, housing (1) inside arranges integrated manipulator, integrated wiring unit, environmental Kuznets Curves detecting unit and security control protected location, described integrated manipulator comprises with lower module: no-load transformer load characteristic test module, transformer noload losses characteristic test module, transformer impedance drop characteristic test module, transformer dc voltage endurance test module, transformer alternating voltage endurance test module and fault distinguishing test module, integrated manipulator respectively with environmental Kuznets Curves detecting unit, security control protected location, integrated wiring unit connects and center-control PC(4) connect, each outer termination line cap (5) of integrated wiring unit is arranged at housing (1) sidewall.
2. a kind of Intelligent distribution transformer compbined test according to claim 1 and fault distinguishing test trolley, is characterized in that: described transformer fault differentiates that test module comprises direct current resistance detection, insulation resistance and absorptance and polarization index in oil and detects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510844844.9A CN105510735A (en) | 2015-11-27 | 2015-11-27 | Intelligent distribution transformer integrated test and fault determination test handcart |
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| CN201510844844.9A CN105510735A (en) | 2015-11-27 | 2015-11-27 | Intelligent distribution transformer integrated test and fault determination test handcart |
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| CN105510735A true CN105510735A (en) | 2016-04-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597158A (en) * | 2016-12-12 | 2017-04-26 | 上海欧秒电力监测设备有限公司 | Distribution transformer integrated detection device |
| CN111965455A (en) * | 2020-08-17 | 2020-11-20 | 广东电网有限责任公司 | Mobile power equipment test system |
| CN112505420A (en) * | 2020-11-13 | 2021-03-16 | 武汉瑞莱保科技有限公司 | Intelligent test analysis system for distribution board |
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| CN201514447U (en) * | 2009-09-11 | 2010-06-23 | 中南大学 | Integral test device of main transformer of electric locomotive |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN203870176U (en) * | 2014-04-22 | 2014-10-08 | 北京航天光华电子技术有限公司 | Transformer test system |
| CN204359883U (en) * | 2015-01-27 | 2015-05-27 | 嘉兴清水电子有限公司 | A kind of transformer multifunctional tester |
-
2015
- 2015-11-27 CN CN201510844844.9A patent/CN105510735A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514447U (en) * | 2009-09-11 | 2010-06-23 | 中南大学 | Integral test device of main transformer of electric locomotive |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN203870176U (en) * | 2014-04-22 | 2014-10-08 | 北京航天光华电子技术有限公司 | Transformer test system |
| CN204359883U (en) * | 2015-01-27 | 2015-05-27 | 嘉兴清水电子有限公司 | A kind of transformer multifunctional tester |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597158A (en) * | 2016-12-12 | 2017-04-26 | 上海欧秒电力监测设备有限公司 | Distribution transformer integrated detection device |
| CN111965455A (en) * | 2020-08-17 | 2020-11-20 | 广东电网有限责任公司 | Mobile power equipment test system |
| CN112505420A (en) * | 2020-11-13 | 2021-03-16 | 武汉瑞莱保科技有限公司 | Intelligent test analysis system for distribution board |
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Application publication date: 20160420 |
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