CN110389271A - Testing System of Transformer and method - Google Patents
Testing System of Transformer and method Download PDFInfo
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- CN110389271A CN110389271A CN201910748191.2A CN201910748191A CN110389271A CN 110389271 A CN110389271 A CN 110389271A CN 201910748191 A CN201910748191 A CN 201910748191A CN 110389271 A CN110389271 A CN 110389271A
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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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Abstract
The present invention relates to a kind of Testing System of Transformer, including measuring device and control device, control device to connect with measuring device.Measuring device includes: variable-frequency power sources, and the variable-frequency power sources connects alternating current by electric power incoming line protective switch and contactor；Intermediate transformer, the intermediate transformer input side are connect by contactor with the variable-frequency power sources output end, access transformer to be measured after one group of outlet side connection and the contactor being arranged in series；Industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument and idling carry measuring instrument, and each measuring instrument signal input part is parallel to transformer input/output terminal to be measured after concatenating contactor respectively.Testing System of Transformer of the invention can primary connection realize a variety of tests such as insulation resistance, industrial frequency withstand voltage, straight resistance, no-load voltage ratio, idling load are carried out to transformer under high-low pressure simultaneously, system can realize full-automatic testing, measurement accuracy is high, high-efficient fast, the automatic qualification for determining test product.
Description
Technical field
The invention belongs to transformer testing technical field more particularly to a kind of Testing System of Transformer and methods.
Background technique
Transformer testing generally comprise insulation resistance test, D.C. resistance test, empty load test, the pressure resistance of work frequency multiplication and
No-load voltage ratio test etc., transformer needs to carry out related experiment before factory and can make after experimental data meets national regulation range
With otherwise easily there is serious accident potential.
It is all single measurement and the note that a certain item parameter is carried out to transformer mostly for current transformer testing
Record, such as be only capable of carrying out transformer insulation resistance test, D.C. resistance test, dielectric oil dielectrical strength pressure test, idling
Carry one of test in the tests such as test, the pressure resistance of work frequency multiplication and no-load voltage ratio, when test need to frequently replace test equipment and survey
Circuit is tried, cannot realize simultaneously and multinomial performance parameter is tested.Meanwhile existing Testing System of Transformer is to transformer
When carrying out high-low pressure test, the test under high pressure or low pressure need to be carried out respectively, cannot carry out testing under high voltage simultaneously.
Therefore, it is necessary to which the design in conjunction with above-mentioned existing Testing System of Transformer improves, providing one kind can be simultaneously
Meet the Testing System of Transformer of the multiple performance test under transformer high-low-voltage and improves efficiency.
Summary of the invention
The present invention provides a kind of Testing System of Transformer, system for deficiency existing for existing Testing System of Transformer
It can be achieved at the same time and insulation resistance test, D.C. resistance test, empty load test, work frequency multiplication are carried out to transformer under high-low pressure
A variety of tests such as pressure resistance and no-load voltage ratio test, system can realize full-automatic testing, and measurement accuracy is high, high-efficient.
To achieve the goals above, a kind of Testing System of Transformer, including measuring device and control device, the control dress
It sets and is connect with the measuring device, transformer to be measured is tested for control and measure device；The measuring device includes:
Variable-frequency power sources, the variable-frequency power sources connect alternating current by electric power incoming line protective switch and contactor；
Intermediate transformer, the intermediate transformer input side is connect by contactor with the variable-frequency power sources output end, defeated
Transformer to be measured is accessed after one group of side connection and the contactor being arranged in series out；
Industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument and idling carry
Measuring instrument, each measuring instrument signal input part are parallel to transformer input/output terminal to be measured respectively and after switch arrays.
Preferably, the measuring device further includes power analyzer, precision current transformer and accurate voltage mutual inductor；Institute
It states power analyzer signal input part and transformer input and output to be measured side is connected to by power sensor；The precision current is mutual
Sensor, accurate voltage mutual inductor are for measuring the loop current between transformer and intermediate transformer to be measured, voltage.
Preferably, the control device includes main control module, and the main control module includes central processing unit, information collection list
Member and output control unit, the central processing unit are connect with the information acquisition unit and output control unit；It is described
Output control unit includes surveying with the industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group
Measure instrument, idling carries measuring instrument and intermediate transformer, power analyzer, precision current transformer, accurate voltage mutual inductor connection
Multiple groups relay and contactor；The central processing unit is used to control the conducting of each relay and contactor, controls to be measured
Transformer carries out insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, no load test and load testing；The information acquisition unit and institute
Measuring device connection is stated, for acquiring the detection information of each measuring instrument and the switch on and off information of each component.
Preferably, the main control module further includes power supply unit, communication unit and over-current protecting unit, the power supply list
Member, communication unit, over-current protecting unit are connect with the central processing unit；The power supply unit is for providing needed for main control module
Control supply voltage；The communication unit is connect with far-end monitoring system, for uploading the detection information of transformer to be measured；Institute
It states over-current protecting unit to be connected in series in the main electric circuit of high-low voltage power source, for carrying out overcurrent protection.
Preferably, the central processing unit includes megger test unit, proof voltage test cell, D.C. resistance test
Unit, no-load voltage ratio test cell and idling carry test cell；The megger test unit is for controlling measuring transformer
Insulation resistance information between winding, iron core, radiator and temperature measuring device；The proof voltage test cell is for controlling measurement
Pressure-resistant information when power frequency or frequency multiplication between the winding of transformer, iron core, radiator and temperature measuring device；The D.C. resistance is surveyed
Examination unit is used to control the resistance value information for the winding for measuring transformer to be measured；The no-load voltage ratio test cell is to be measured for controlling measurement
No-load voltage ratio information between transformer primary secondary side winding；When the idling carries test cell for measuring the zero load of transformer to be measured
Test voltage, no-load current and control loss, and load when test current, short-circuit impedance and load loss information.
Preferably, the central processing unit further includes high voltage control unit and low voltage control unit, the high voltage control list
Member respectively with the megger test unit, proof voltage test cell, D.C. resistance test cell, no-load voltage ratio test cell and
Idling carries test cell connection, when for controlling high pressure to transformer to be measured carry out insulation resistance, frequency multiplication pressure resistance, straight resistance, no-load voltage ratio,
Empty load testing；The low voltage control unit respectively with the megger test unit, proof voltage test cell, D.C. resistance
Test cell, no-load voltage ratio test cell and idling carry test cell connection, carry out when for controlling low pressure to transformer to be measured exhausted
Edge resistance, industrial frequency withstand voltage, straight resistance, no-load voltage ratio, empty load testing.
Preferably, the central processing unit further includes fault diagnosis alarm unit, the fault diagnosis alarm unit difference
It is carried with the megger test unit, proof voltage test cell, D.C. resistance test cell, no-load voltage ratio test cell and idling
Test cell connection, insulation resistance information, dielectric strength information, the resistance value of winding of transformer to be measured when for according to high-low pressure
Information, former secondary side no-load voltage ratio information and idling load-loss, no-load current, short-circuit impedance information, carry out fault diagnosis alarm,
To monitor the fault message of measuring device and transformer to be measured.
Preferably, the master control set further includes host computer, and the host computer is stored with for controlling transformer measurement
System program, the host computer are connected to the main control module, and carry out insulation resistance, work frequency multiplication to transformer to be measured for controlling
Pressure resistance, straight resistance, no-load voltage ratio, empty load testing, and show each test parameter information.
A kind of transformer testing method, using the Testing System of Transformer, comprising:
Automatic test pattern and manual control mode are set by test macro control model；
It is resistance to carry out insulation resistance under high pressure or low pressure, work frequency multiplication respectively to transformer to be measured under automatic control mode
Pressure, straight resistance, no-load voltage ratio, empty load testing, and real-time storage measurement result simultaneously determine conclusion (of pressure testing)；
It is resistance to carry out insulation resistance under high pressure or low pressure, work frequency multiplication respectively to transformer to be measured under manual control mode
Pressure, straight resistance, no-load voltage ratio, empty load testing, and real-time storage measurement result simultaneously determine conclusion (of pressure testing).
Compared with prior art, the advantages and positive effects of the present invention are:
Testing System of Transformer provided by the invention by intermediate transformer, precision current transformer, accurate voltage mutual inductor,
The test such as power analyzer, industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument
Device is set to testing stand simultaneously, and control device is communicated with each measuring instrument, controls the work of each test device, can be after primary connection
A variety of tests such as insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, no-load voltage ratio, the empty load testing under transformer high-low-voltage are realized simultaneously.It adopts
With Distributed Design, each part of detecting is set on same testing stand, and each testing experiment is mutually indepedent and can be freely combined, just
In installation and debugging, the reliability of test macro can be improved.The present invention provides test macro, can be automatically to all high-low pressure data
Integrative test is carried out, the fusion problem between high-low pressure and different test equipments is completely solved, it is automatic to convert, it deposits automatically
Storage, accurate data.Simultaneity factor is provided with manual control mode, is able to achieve height under manual control and automatic control mode
Transformer performance test under low pressure.
Detailed description of the invention
Fig. 1 is Testing System of Transformer structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of measuring device；
Fig. 3 is the structural schematic diagram of main control module；
Fig. 4 is the measurement result to certain transformer monitoring.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application are explicitly described, it is clear that described embodiment is the application part
Embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present application under the premise of creative work.
The description and claims of this application and term " includes " and their any deformations in above-mentioned attached drawing, meaning
Figure, which is to cover, non-exclusive includes.Such as process, method or system comprising a series of steps or units, product or equipment do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap
Include the other step or units intrinsic for these process, methods, product or equipment.In addition, term " first ", " second " and
" third " etc. is for distinguishing different objects, not for description particular order.
Since existing Testing System of Transformer is only capable of single carrying out the insulation resistance, pressure resistance of work frequency multiplication, straight to transformer
One of test in the tests such as resistance, no-load voltage ratio, empty load testing, cannot simultaneously test multinomial performance parameter.Moreover,
Existing Testing System of Transformer need to carry out the test under high pressure or low pressure when carrying out high-low pressure test to transformer respectively,
It cannot carry out testing under high voltage simultaneously.When transformer factory test, test macro is needed to frequently replace, causes testing efficiency low
Under, measuring accuracy is poor.In view of the above-mentioned problems, the present invention considers from the angle of design synthesis Testing System of Transformer
By the medium multinomial test integration of the tests such as exhausted insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, no-load voltage ratio, empty load testing, one kind is devised
Testing System of Transformer can be realized and carry out various performance tests to transformer automatically.Specifically:
Present embodiments provide a kind of Testing System of Transformer, including measuring device and control device, control device and survey
Device connection is measured, transformer to be measured is tested for control and measure device.
With reference to shown in Fig. 1, Fig. 2, measuring device includes variable-frequency power sources, intermediate transformer, precision current transformer, accurate electricity
Press mutual inductor, power analyzer, industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, the measurement of no-load voltage ratio group
Instrument and idling carry measuring instrument etc..Wherein, variable-frequency power sources connects alternating current, output end by electric power incoming line protective switch and contactor
Intermediate transformer input side is accessed after series contactor, intermediate transformer outlet side is connected after one group of contactor in parallel, series connection
Transformer input side to be measured is accessed after A.C. contactor.Testing stand is controlled by adjusting variable-frequency power sources with intermediate transformer to be measured
The output voltage of transformer, for transformer test to be measured.Precision current transformer, accurate voltage mutual inductor are to be measured for measuring
Loop current, voltage between transformer and intermediate transformer；Power analyzer signal input part is connected by power sensor
To transformer input/output terminal to be measured, transformer power consumption when idling carries can be effectively analyzed.Industrial frequency withstand voltage measuring instrument, D.C. resistance
Measuring instrument, insulation measurement instrument, no-load voltage ratio group measuring instrument and idling carry each measuring instrument signal input part difference such as measuring instrument
And transformer input and output to be measured side is parallel to after switch arrays, measuring transformer insulation resistance test, D.C. resistance try respectively
It tests, the pressure test of work frequency multiplication, no-load voltage ratio test and various performance parameters when empty load test.
The test macro of the present embodiment is by intermediate transformer, precision current transformer, accurate voltage mutual inductor, power analysis
Instrument, industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument and empty load measure
The devices such as instrument are set to testing stand simultaneously, and control device is communicated with each measuring instrument, control each test device work, can once connect
Realize that the insulation resistance test under transformer high-low-voltage, D.C. resistance test, the pressure test of work frequency multiplication, no-load voltage ratio are tested after line simultaneously
And a variety of tests such as empty load test.Using Distributed Design, on each same testing stand of measuring device, each testing experiment is mutual
It independently and can be freely combined, be easily installed debugging, the reliability of test macro can be improved.
With reference to shown in Fig. 1, Fig. 3, for control device, control device includes main control module and upper in the present embodiment
Machine.Wherein, main control module is the core control portions of test macro, including central processing unit, information acquisition unit, output control
Unit, power supply unit, over-current protecting unit and communication unit, central processing unit and information acquisition unit, output control unit,
Power supply unit, over-current protecting unit and communication unit connection.Information acquisition unit is connect with measuring device, for acquiring each survey
Measure the detection information of instrument and the switch on and off information of each component.Output control unit includes with industrial frequency withstand voltage measuring instrument, directly
Leakage resistance measuring instrument, insulation measurement instrument, no-load voltage ratio group measuring instrument, idling carry measuring instrument and intermediate transformer, power point
The multiple groups relay and contactor that analyzer, precision current transformer, accurate voltage mutual inductor connect.Central processing unit is for controlling
The conducting of each relay and contactor, control carry out insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, no load test to transformer to be measured
And load testing.Power supply unit is for control supply voltage needed for providing main control module.Over-current protecting unit is connected in series to height
In the main electric circuit of low-tension supply, for carrying out overcurrent protection.Communication module can be connect with far-end monitoring system, to be measured for uploading
The detection information of transformer.Host computer is connect with main control module, is stored with the system program for controlling transformer measurement, control
To transformer to be measured carry out high-low pressure under insulation resistance test, D.C. resistance test, the pressure test of work frequency multiplication, no-load voltage ratio test with
And a variety of tests such as empty load test, and show each test parameter information.
It is detailed description system to the tests such as Insulation Resistance of Transformer, the pressure resistance of work frequency multiplication, straight resistance, no-load voltage ratio, idling load, reference
Shown in Fig. 3, Fig. 4, Fig. 4 shows the measurement result measured to certain transformer.The present embodiment sets central processing implement body
It is calculated as megger test unit, proof voltage test cell, D.C. resistance test cell, no-load voltage ratio test cell, empty load testing
Unit and high voltage control unit and low voltage control unit, fault diagnosis alarm unit etc..Wherein, megger test unit
It controls relay, contactor and insulation measurement instrument signal output end to connect, for the winding of measuring transformer, iron core, dissipate
Insulation resistance information between hot device and temperature measuring device；Proof voltage test cell controls relay and industrial frequency withstand voltage measuring instrument is believed
The connection of number output end, leakage when for measuring power frequency or frequency multiplication between the winding of transformer, iron core, shielded layer and punching bolt
Current information.By taking the test of three-phase transformer as an example, megger test unit and proof voltage test cell control insulation resistance
Measuring instrument and industrial frequency withstand voltage measuring instrument measure winding and iron core, winding and winding, winding and shielded layer and iron core and wear iron core
Resistance value and current information between bolt.
D.C. resistance test cell controls relay, contactor and direct current resistance measurer signal output end and connects, and is used for
Measure the DC resistance of the winding of transformer to be measured.By taking the measurement of three-phase transformer as an example, the control of D.C. resistance test cell
Resistance, the resistance of winding S1 and the resistance of winding S2 of direct current resistance measurer measurement winding P1.
No-load voltage ratio test cell controls relay, contactor and no-load voltage ratio group measuring instrument signal output end and connects, for measuring
The ratio information of the electric current of the former secondary side winding of transformer to be measured, voltage or the number of turns.By taking the measurement of three-phase transformer as an example, become
Than the no-load voltage ratio information between test cell control no-load voltage ratio group measuring instrument measurement winding P1 and S1, P1 and S2.
Empty load measuring unit control relay, contactor and idling carry the connection of measuring instrument signal output end, for measuring
No-load current, no-load loss and test voltage information when the zero load of transformer to be measured, or test current when load, short circuit
The information such as impedance and load loss.By taking the measurement of three-phase transformer as an example, empty load measuring unit control idling carries measuring instrument
Transformer A-B phase voltage, B-C phase voltage, C-A phase voltage, A phase current, B phase current, C phase when measuring unloaded with power analyzer
The information such as electric current, no-load current；The load loss of transformer, A1-A2 impedance, B1-B2 impedance and C1-C2 resistance when measurement load
The information such as anti-.
High voltage control unit respectively with megger test unit, proof voltage test cell, D.C. resistance test cell, become
Test cell connection is carried than test cell, idling, it is resistance to carry out insulation resistance, frequency multiplication to transformer to be measured when for controlling high pressure
The tests such as pressure, straight resistance, no-load voltage ratio, idling load.Low voltage control unit respectively with megger test unit, proof voltage test cell,
D.C. resistance test cell, no-load voltage ratio test cell, idling carry test cell connection, when for controlling low pressure to transformer to be measured into
The tests such as row insulation resistance, industrial frequency withstand voltage, straight resistance, no-load voltage ratio, idling load.After system electrification, high pressure if desired is carried out to transformer
Performance test, system control intermediate transformer, which is connected, is adjusted to required high pressure range, such as 1500V, each test cell point for voltage
It Kong Zhi not be communicated with corresponding measuring instrument, realize and insulation resistance is carried out to transformer to be measured when high pressure, frequency multiplication pressure resistance, straight resistance, is become
The test such as carry than, idling；If desired low-pressure performance test is carried out to transformer, voltage is adjusted to by system control intermediate transformer
Required low pressure range, such as 45V are realized and carry out insulation resistance, industrial frequency withstand voltage, straight resistance, no-load voltage ratio, idling to transformer to be measured when low pressure
The test such as load.
Fault diagnosis alarm unit is single with megger test unit, proof voltage test cell, D.C. resistance test respectively
Member, no-load voltage ratio test cell, idling carry test cell connection, the insulation resistance information of transformer to be measured when for according to high-low pressure,
Dielectric strength information, the resistance value information of winding, former secondary side no-load voltage ratio information and idling load-loss, no-load current, short-circuit impedance
Etc. information, carry out fault diagnosis alarm, to monitor the fault message of measuring device and transformer to be measured.It is automatic built in control device
Storage device can carry out high-volume memory storage, and after the completion of test, testing result is automatically performed database archive and can be at once
Print test report；Host computer can be realized each fault message of display simultaneously, and can will test information and be uploaded to distal end prison
Control system realizes that distal end intelligent management and failure anticipation, intelligence degree are high.
Testing System of Transformer of the invention automatically carries out all high-low pressure data by full-automatic testing platform comprehensive
Test completely solves the fusion problem between high-low pressure and different test equipments, automatic to convert, and is automatically stored, is convenient for retrospect,
Accurate data is all automatically performed by test macro.Meanwhile system is also configured with manual testing's module, it can be by setting manually
It sets, realizes the tests such as insulation resistance, frequency multiplication pressure resistance, straight resistance, no-load voltage ratio, the idling load of transformer.System globe area manual testing with
Automatic test pattern, the transformer performance being able to achieve under high-low pressure under manual control and automatic control mode are tested.
For above-mentioned Testing System of Transformer, the present invention also provides corresponding test methods, and test macro is controlled
Mode setting is automatic test pattern and manual control mode, can pass through the manual/auto rotation on test macro control panel
Button selects operating mode.Then the insulated electro under high pressure or low pressure is carried out respectively to transformer to be measured under automatic control mode
The tests such as resistance, frequency multiplication pressure resistance, straight resistance, no-load voltage ratio, idling load, and real-time storage measurement result.Pass through manual operation circle of host computer
Face, select automatic test, megger test, proof voltage test, D.C. resistance test, no-load voltage ratio group to test, no load test or
Load testing etc. accordingly tests transformer to be measured, the automatic conclusion (of pressure testing) for determining product to be tested.Or in manual control
Carry out insulation resistance, frequency multiplication pressure resistance, straight resistance, no-load voltage ratio, the idling load etc. under high pressure or low pressure under mode respectively to transformer to be measured
Test, and real-time storage measurement result.Transformer to be measured is carried out by the power knob selection on test macro control panel
The test of high pressure or low pressure；By the manual operation interface of control panel, megger test, proof voltage test, direct current are selected
Resistance test, the test of no-load voltage ratio group, no load test and load testing etc. test transformer to be measured, automatic to determine to be tested
The conclusion (of pressure testing) of test product.
Claims (9)
1. a kind of Testing System of Transformer, including measuring device and control device, the control device and the measuring device connect
It connects, transformer to be measured is tested for control and measure device；It is characterized in that, the measuring device includes:
Variable-frequency power sources, the variable-frequency power sources connect alternating current by electric power incoming line protective switch and contactor；
Intermediate transformer, the intermediate transformer input side are connect by contactor with the variable-frequency power sources output end, outlet side
Transformer to be measured is accessed after connecting one group and the contactor that is arranged in series；
Industrial frequency withstand voltage measuring instrument, direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument and empty load measure
Instrument, each measuring instrument signal input part are parallel to transformer input/output terminal to be measured respectively and after switch arrays.
2. Testing System of Transformer according to claim 1, which is characterized in that the measuring device further includes power analysis
Instrument, precision current transformer and accurate voltage mutual inductor；The power analyzer signal input part is connected by power sensor
To transformer input and output to be measured side；The precision current transformer, accurate voltage mutual inductor for measure transformer to be measured with
Loop current, voltage between intermediate transformer.
3. Testing System of Transformer according to claim 1 to 2, which is characterized in that the control device includes master control mould
Block, the main control module include central processing unit, information acquisition unit and output control unit, the central processing unit and institute
State information acquisition unit and output control unit connection；The output control unit include with the industrial frequency withstand voltage measuring instrument,
Direct current resistance measurer, insulation measurement instrument, no-load voltage ratio group measuring instrument, idling carry measuring instrument and intermediate transformer, power
The multiple groups relay and contactor that analyzer, precision current transformer, accurate voltage mutual inductor connect；The central processing unit is used
In the conducting for controlling each relay and contactor, controls and insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, sky are carried out to transformer to be measured
Carry test and load testing；The information acquisition unit is connect with the measuring device, for acquiring the detection of each measuring instrument
The switch on and off information of information and each component.
4. Testing System of Transformer according to claim 3, which is characterized in that the main control module further includes power supply list
Member, communication unit and over-current protecting unit, the power supply unit, communication unit, over-current protecting unit and the central processing
Device connection；The power supply unit is for control supply voltage needed for providing main control module；The communication unit and remote monitoring
System connection, for uploading the detection information of transformer to be measured；The over-current protecting unit is connected in series to the main electricity electricity of high-low voltage power source
Lu Zhong, for carrying out overcurrent protection.
5. Testing System of Transformer according to claim 3, which is characterized in that the central processing unit includes insulation resistance
Test cell, proof voltage test cell, D.C. resistance test cell, no-load voltage ratio test cell and idling carry test cell；It is described
Megger test unit is used to control the insulated electro between winding, iron core, radiator and the temperature measuring device of measuring transformer
Hinder information；The proof voltage test cell be used to control measure power frequency or the winding of transformer when frequency multiplication, iron core, radiator and
Pressure-resistant information between temperature measuring device；The D.C. resistance test cell is used to control the resistance value for the winding for measuring transformer to be measured
Information；The no-load voltage ratio test cell is used to control the no-load voltage ratio information measured between transformer primary secondary side winding to be measured；The sky
Load testing unit is used to measure test voltage, no-load current and the control loss when zero load of transformer to be measured, and negative
Test current, short-circuit impedance and load loss information when load.
6. Testing System of Transformer according to claim 5, which is characterized in that the central processing unit further includes high voltage-controlled
Unit and low voltage control unit processed, the high voltage control unit are single with the megger test unit, proof voltage test respectively
Member, D.C. resistance test cell, no-load voltage ratio test cell and idling carry test cell connection, to change to be measured when for controlling high pressure
Depressor carries out insulation resistance, frequency multiplication pressure resistance, straight resistance, no-load voltage ratio, empty load testing；The low voltage control unit respectively with the insulation
Resistance test unit, proof voltage test cell, D.C. resistance test cell, no-load voltage ratio test cell and idling carry test cell and connect
It connecing, insulation resistance, industrial frequency withstand voltage, straight resistance, no-load voltage ratio, empty load testing being carried out to transformer to be measured when for controlling low pressure.
7. Testing System of Transformer according to claim 6, which is characterized in that the central processing unit further includes that failure is examined
Disconnected alarm unit, the fault diagnosis alarm unit respectively with the megger test unit, proof voltage test cell, direct current
Resistance test unit, no-load voltage ratio test cell and idling carry test cell connection, transformer to be measured when for according to high-low pressure
Insulation resistance information, dielectric strength information, the resistance value information of winding, former secondary side no-load voltage ratio information and idling load-loss, zero load
Electric current, short-circuit impedance information carry out fault diagnosis alarm, to monitor the fault message of measuring device and transformer to be measured.
8. Testing System of Transformer according to claim 3, which is characterized in that the master control set further includes host computer,
The host computer is stored with the system program for controlling transformer measurement, and the host computer is connected to the main control module, and uses
Insulation resistance, the pressure resistance of work frequency multiplication, straight resistance, no-load voltage ratio, empty load testing are carried out to transformer to be measured in control, and show each test ginseng
Number information.
9. a kind of transformer testing method, using the described in any item Testing System of Transformer of claim 1-8, feature exists
In, comprising:
Automatic test pattern and manual control mode are set by test macro control model；
Carry out insulation resistance under the high pressure or low pressure, pressure resistance of work frequency multiplication, straight respectively to transformer to be measured under automatic control mode
Resistance, no-load voltage ratio, empty load testing, and real-time storage measurement result simultaneously determine conclusion (of pressure testing)；
Carry out insulation resistance under the high pressure or low pressure, pressure resistance of work frequency multiplication, straight respectively to transformer to be measured under manual control mode
Resistance, no-load voltage ratio, empty load testing, and real-time storage measurement result simultaneously determine conclusion (of pressure testing).
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