CN107356829A

CN107356829A - Transformer capacity simulation and training device

Info

Publication number: CN107356829A
Application number: CN201710459086.8A
Authority: CN
Inventors: 青志明; 王�义; 周飞; 章陈勇; 黄旭
Original assignee: Chongqing Gold Diansheng Technology Co Ltd; Technology & Skill Training Center Of Chongqing Electric Power Company State Grid; State Grid Corp of China SGCC
Current assignee: Chongqing Gold Diansheng Technology Co Ltd; Technology & Skill Training Center Of Chongqing Electric Power Company State Grid; State Grid Corp of China SGCC
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2017-11-17
Anticipated expiration: 2037-06-16
Also published as: CN107356829B

Abstract

The invention discloses a kind of transformer capacity simulation and training device, including volume test resistive load, volume test capacitive load, one or more in volume test inductive load, each volume test is connected between each high-pressure side binding post with resistive load by controlling switch, each volume test is connected between each high-pressure side binding post with capacitive load by controlling switch, each volume test is connected between each high-pressure side binding post with inductive load by controlling switch, each controlling switch is electrically connected with the controller, the controller is used for the command signal output control signal according to operator, control closure or the disconnection of each controlling switch, realize the volume emulation of transformer.It uses electronic circuit or module to substitute inside transformer structure, to realize the simulation of transformer capacity functional simulation, for teaching, training, has wide adaptation range, the power of consumption small, the features such as being actually consistent with scene.

Description

Transformer capacity simulation and training device

Technical field

The present invention relates to a kind of actual training device, more particularly to a kind of transformer capacity simulation and training device.

Background technology

Due to the making material of transformer, even if a capacity only tens KVA transformer, its weight also has hundred More than kilogram.So a real transformer is transported to scene, it will expend substantial amounts of human and material resources, financial resources.So carry out During transformer functional test training, generally use simulation model gives training, and is giveed training using simulation model, can only understand The structure of transformer, and detection, experiment and quality judgement to transformer etc., the training for having certain technology content can not but enter OK.

Meanwhile even if a real transformer is transported into scene, and the normal civilian and work transformer in scene is in high pressure Side commonly enters the high-tension electricity that voltage is 10kV or more than 10kV, when this is for entering line transformer functional test training, there is Great potential safety hazard.Applicant designs a kind of analogue transformer to solve the above problems, and it can be seen outside transformer Portion's structure, there is transformer function again, you can carry out conventional electrical test, it is therefore desirable to one kind using electronics and electrician's mode come Realize the volume test actual training device of transformer capacity functional simulation.

The content of the invention

The purpose of the present invention is the deficiency corresponding to prior art, there is provided a kind of transformer capacity simulation and training device, It uses electronics to substitute inside transformer structure with electrician's mode i.e. electronic circuit or module, to realize transformer capacity function mould The simulation of plan, for teaching, training, have wide adaptation range, the power of consumption small, be electric power the features such as being actually consistent with scene The preferable selection as teaching operation training such as teaching, training demonstration.

The purpose of the present invention is realized using following proposal：A kind of transformer capacity simulation and training device, including capacity One or more in test resistive load, volume test capacitive load, volume test inductive load, each volume test Between being connected to each high-pressure side binding post by controlling switch with resistive load, each volume test capacitive load is led to Cross controlling switch to be connected between each high-pressure side binding post, each volume test inductive load passes through controlling switch point It is not connected between each high-pressure side binding post, each controlling switch is electrically connected with the controller, and the controller is used for basis The command signal output control signal of operator, closure or the disconnection of each controlling switch are controlled, realize the volume emulation of transformer.

It is arranged on volume test capacitive load between two high-pressure side binding posts, volume test resistive load string Connection is in parallel, is arranged on volume test between two high-pressure side binding posts with inductive load, volume test resistive load Serial or parallel connection, the volume test being arranged between two high-pressure side binding posts are born with inductive load, volume test with capacitive Serial or parallel connection is carried, volume test resistive load, the volume test perception being arranged between two high-pressure side binding posts Load, volume test are arbitrarily connected with capacitive load, form various combinations.The appearance being arranged between two high-pressure side binding posts Measurement resistive load on probation, volume test inductive load, volume test capacitive load can be with three kinds of series connection, can be with three kinds simultaneously Connection, can two kinds be in series with another parallel connection, can also be connected with another kind after two kinds of parallel connections etc..

Transformer capacity simulation and training device includes one or more groups of volume test resistive loads, and per pool-size, test is used Resistive load includes the first volume test resistive load, the second volume test resistive load, the 3rd volume test with resistive Load, first volume test are connected to high-pressure side A binding posts and high-pressure side C wiring with resistive load by controlling switch Between terminal, second volume test is connected to high-pressure side B binding posts and high-pressure side C with resistive load by controlling switch Between binding post, the 3rd volume test is connected to high-pressure side A binding posts and height with resistive load by controlling switch Between pressure side B binding posts.

Preferably, transformer capacity test training module includes volume test resistive load and volume test is used Capacitive load, volume test between two high-pressure side binding posts is arranged on capacitive load, volume test resistive load Parallel connection, volume test is accessed loop with the resistive load combination different with capacitive load composition from volume test, correspond to respectively Simulate the transformer of different capabilities.

Transformer capacity simulation and training device includes one or more groups of volume test capacitive loads, and per pool-size, test is used Capacitive load includes the first volume test with capacitive load, the second volume test with capacitive load, the 3rd volume test capacitive Load, first volume test are connected to high-pressure side A binding posts and high-pressure side C wiring with capacitive load by controlling switch Between terminal, second volume test is connected to high-pressure side B binding posts and high-pressure side C with capacitive load by controlling switch Between binding post, the 3rd volume test is connected to high-pressure side A binding posts and height with capacitive load by controlling switch Between pressure side B binding posts.Using capacitive load and resistive load serial or parallel connection analogue transformer capacity, precision pole after tested Height, and the transformer of more different capabilities can be simulated by controlling switch, it is applied widely, it is easy to design circuit, small volume, Cost is low and stable performance.

One end of the first volume test resistive load electrically connects with node A2, and first volume test is with resistive The other end of load electrically connects with node C2, and one end of the second volume test resistive load electrically connects with node B2, institute The other end for stating the second volume test resistive load electrically connects with node C2, and the one of the 3rd volume test resistive load End electrically connects with node A2, and the other end of the 3rd volume test resistive load electrically connects with node B2, and node A2 passes through Relay K5 normally opened contact is connected with node A1, and node B2 is connected by relay K26 normally opened contact with node B1, node C2 is connected by relay K12 normally opened contact with node C1；One end of the first volume test capacitive load and node A3 is electrically connected, and the other end of the first volume test capacitive load electrically connects with node C3, and second volume test is used One end of capacitive load is electrically connected with node B3, and second volume test is electrically connected with the other end of capacitive load with node C3 Connect, one end of the 3rd volume test capacitive load electrically connects with node A3, the 3rd volume test capacitive load The other end electrically connected with node B3, node A3 is connected by relay K49 normally opened contact with node A1, node B3 by after Electrical equipment K70 normally opened contact is connected with node B1, and node C3 is connected by relay K56 normally opened contact with node C1；Will knot Point A1, B1, C1 electrically connect with high-pressure side A, B, C binding post respectively, or will pass through between node A1 and high-pressure side A binding posts Relay J5 normally opened contact connection, is connected between node B1 and high-pressure side B binding posts by relay J7 normally opened contact, Connected between node C1 and high-pressure side C binding posts by relay J6 normally opened contact, each relay is controlled by controller.

Relay K5 coil, relay K26 coil, relay K12 one end of coil are grounded, relay K5's Coil, relay K26 coil, the relay K12 other end of coil pass through relay K19 normally opened contact and direct current Piezoelectricity connects, and one end of relay K19 coil electrically connects with DC voltage, the other end of relay K19 coil and control The output end electrical connection of device；Relay K49 coil, relay K70 coil, relay K56 one end of coil are grounded, Relay K49 coil, relay K70 coil, the relay K56 other end of coil pass through the normally opened of relay K63 Contact electrically connects with DC voltage, and one end of relay K63 coil electrically connects with DC voltage, relay K63 coil The other end electrically connects with the output end of controller；Relay J5 coil, relay J7 coil, relay J6 coil one End is grounded, and relay J5 coil, relay J7 coil, the relay J6 other end of coil pass through relay K90 Normally opened contact electrically connected with DC voltage, one end of relay K90 coil electrically connects with DC voltage, relay K90's The other end of coil electrically connects with the output end of controller, and the both ends of the coil of each relay are parallel with diode, two pole The plus earth of pipe.Controller can with the energization or power-off of control relay K19 coils, and the energization of relay K19 coils with It is no to have indicator lamp prompting.Controller can be with the energization or power-off of control relay K63 coils, and the energization of relay K63 coils Whether indicator lamp prompting is had.Controller can be with the energization or power-off of control relay K90 coils, and relay K90 coils is logical It is whether electric to have indicator lamp prompting.

Preferably, transformer capacity test training module includes volume test resistive load and volume test is used Inductive load, volume test between two high-pressure side binding posts is arranged on inductive load, volume test resistive load Series connection.Using inductive load and resistive load serial or parallel connection analogue transformer capacity, precision is also high after tested, and can also The transformer of more different capabilities is simulated, it is applied widely.

The transformer capacity test includes one or more groups of volume test resistive loads and one group with training module Or multigroup volume test inductive load, the first volume test resistive load of each group volume test resistive load, second Volume test resistive load, the 3rd volume test are held with the first of each group volume test inductive load respectively with resistive load Measure on probation inductive load, the second volume test with inductive load, the 3rd volume test with inductive load be connected on node A4, Between B4, C4 and node a4, b4, c4, each group volume test in multigroup volume test resistive load is in parallel with resistive load, And each group volume test accesses loop by controlling switch respectively with resistive load, node A4, B4, C4 are respectively directly and high-pressure side A, B, C binding post are connected or are connected by controlling switch with high-pressure side A, B, C binding post, the direct short circuit of node a4, b4, c4 Or by wire short circuit after being connected respectively with low-pressure side a, b, c binding post, node a4, b4, c4 respectively directly with low-pressure side a, B, c binding posts are connected or are connected by controlling switch with low-pressure side a, b, c binding post.

Each group volume test in multigroup volume test inductive load is in parallel with inductive load, and each group volume test is used Inductive load accesses loop by controlling switch respectively.

Each volume test uses resistance with resistive load, and each volume test uses capacitor with capacitive load, and each capacity is surveyed Inductive load on probation uses transformer or inductance.

The controller is communicated with computer or Digiplex, for receiving the finger of computer or Digiplex Signal is made, or, the controller is communicated with touch-screen, for receiving the command signal of touch-screen.

Present invention has the advantage that：The transformer capacity simulation and training device of the present invention is using electronics and electrician's mode That is electronic circuit or module substitutes the internal structure of real transformer such as iron core, coil etc., to realize transformer capacity function Simulation, for teaching, training, test operation is using upper also as real transformer.The device has wide adaptation range, disappeared The power of consumption is small, the features such as being actually consistent with scene, is the preferable choosing as operation training of imparting knowledge to students such as electric power teaching, training demonstration Select.

The volume test of the present invention is applied to " analogue transformer " with actual training device so that the existing change of analogue transformer Depressor profile, it can be seen that the external structure of real transformer；There is transformer function again, you can carry out conventional electrical test, use " analogue transformer " of the present invention carries out skills training, can effectively improve training and teaching effect, make student be relatively easy to grasp Transformer device structure, principle and method of testing；The human and material resources and time cost in terms of educational training are saved, improve education training The comprehensive benefit of instruction.By training, employee is obtained consolidating in professional knowledge and technical ability and is lifted, grasp the mark of related work Standardization operation procedure, operating efficiency, the performance of enterprises are improved, reduces the generation of accident.

Brief description of the drawings

Fig. 1 is the principle schematic of the analogue transformer of the present invention；

Fig. 2 is a kind of embodiment of the schematic diagram of the Insulation Resistance of Transformer test training module of the present invention；

Fig. 3 is another embodiment of the schematic diagram of the Insulation Resistance of Transformer test training module of the present invention；

Fig. 4 is the schematic diagram of the Anti-misoperation circuit of the present invention；

Fig. 5 is a kind of embodiment of the schematic diagram of the transformer capacity test training module of the present invention；

Fig. 6 is another embodiment of the schematic diagram of the transformer capacity test training module of the present invention；

Fig. 7 is the schematic diagram of the transformer voltage ratio module for testing of the present invention；

Fig. 8 is the schematic diagram of the DCR of Transformer module for testing of the present invention；

Fig. 9 is the schematic diagram of the transformer loss test training module of the present invention.

Embodiment

Transformer capacity simulation and training device disclosed by the invention can be arranged to a single device, and it also has Power module, controller, emulation transformer shell etc., only realize capacity functional simulation, can also be with other each functional simulations Actual training device is arranged in an emulation transformer shell together, is shared power module, controller, housing etc., is collectively formed one Individual analogue transformer.

Referring to Fig. 1 to Fig. 9, a kind of analogue transformer, including high-pressure side binding post（A、B、C）, low-pressure side binding post （a、b、c、N）, ground terminal, controller, power module, transformer capacity test with training module, Insulation Resistance of Transformer survey Training module, transformer loss test training module, transformer voltage ratio module for testing, DCR of Transformer is tried out to test Use module.The power module is used to power for whole device.Power module is used to 220V exchanges being converted into 24V DC voltages With 5V DC voltages.The controller of the present invention uses PLC control panels.Preferably, all controlling switches use relay in the present invention Device.Certainly the controlling switch of the present invention can also use the switch that other can be controlled by a controller.The present invention is led to by controller The controlling switch controlled in each test training module is crossed, so as to control the unlatching of each test training module and each survey of control Training module on probation is connected or disconnected with corresponding binding post, each test during the various tests of carry out is not done mutually with training module Disturb.The resistive load is that the load with resistance is not limited only to resistance, and the capacitive load can use capacitor, described Inductive load can use inductance or transformer etc..

This analogue transformer can be not provided with instruction inputting device（Such as button, touch-screen）And suggestion device（Such as acousto-optic Deng can be display screen）Deng.The controller of the analogue transformer can by way of existing line or wirelessly with calculating Machine or other equipment such as Digiplex are communicated, and operator sends command signal by computer or other equipment and passed through now The mode of line or the controller for wirelessly passing to analogue transformer.Certainly, analogue transformer can also set instruction defeated Enter device（Such as button, touch-screen）And suggestion device（Such as acousto-optic, can be display screen）, respectively with the control of analogue transformer Device connection processed.By instruction inputting device input instruction signal, alarmed by suggestion device or display device or state shows Show.

The Insulation Resistance of Transformer test includes megger test resistive load, the high-pressure side with training module Megger test resistive load, the high pressure are connected with by controlling switch between binding post and low-pressure side binding post Megger test resistive load, the low pressure side joint are connected with by controlling switch between side terminal and ground terminal Megger test resistive load is connected with by controlling switch between line terminals and ground terminal, Insulation Resistance of Transformer is surveyed Each controlling switch of training module on probation is electrically connected with the controller respectively, and the controller is used for the command signal according to operator Output control signal, control closure or the disconnection of each controlling switch of Insulation Resistance of Transformer test training module.It is described exhausted Edge resistance test is parallel with megger test capacitive load with the both ends of resistive load.Megger test resistive load The Insulation test of analogue transformer can be realized.Megger test capacitive load is set to be born with megger test with resistive Carrying parallel connection can realize that analogue transformer absorptance is tested, and and can mitigate on the premise of ensureing to realize experiment close to reality Weight of equipment, it is cost-effective.

Referring to Fig. 2, Insulation Resistance of Transformer test training module include two groups of megger test resistive loads or Three groups of megger test resistive loads, first group of megger test in two groups of megger test resistive loads are used Resistive load, two groups of megger tests are with second group of megger test resistive load in resistive load.Every group of insulation Resistance test resistive load includes multiple megger test resistive loads, in every group of megger test resistive load Multiple megger tests it is in parallel with resistive load, and multiple insulaion resistances in every group of megger test resistive load Loop where test is accessed by controlling switch respectively with resistive load, controlling switch control is set to access the load resistance in each loop Value.

The physical circuit of the Insulation Resistance of Transformer test training module of the present embodiment is as follows：First group of insulaion resistance is surveyed Resistive load on probation includes megger test resistive load R1, R2, R3, second group of megger test resistive load bag Megger test resistive load R4, R6, R8 are included, megger test passes through relay J14 with resistive load R1 one end Normally opened contact be connected with node A10, megger test is connected with the resistive load R1 other end with node b10.Insulated electro Resistance test is connected with resistive load R4 one end by relay J14 normally opened contact with node C10, megger test resistance Property load R1 the other end be connected with node PE10.Megger test passes through relay J13's with resistive load R2 one end Normally opened contact is connected with node A10, and megger test is connected with the resistive load R2 other end with node b10.Insulaion resistance Test is connected with resistive load R6 one end by relay J13 normally opened contact with node C10, and megger test is with resistive The load R6 other end is connected with node PE10.Megger test passes through the normal of relay J12 with resistive load R3 one end Open contact to be connected with node A10, megger test is connected with the resistive load R3 other end with node b10.Insulaion resistance is surveyed Resistive load R8 on probation one end is connected by relay J12 normally opened contact with node C10, and megger test is born with resistive The other end for carrying R8 is connected with node PE10.The normally opened contact and high-pressure side A terminals that node A10 passes through relay J10, J11 Son connection, node C10 are connected by relay J10 normally opened contact with high-pressure side C binding posts.Node b10 passes through relay J15 normally opened contact is connected with low-pressure side b binding posts.The normally opened contact and ground terminal that node PE10 passes through relay J16 Connection.

During use during the Insulation Resistance of Transformer test training module of the present embodiment, by high-pressure side A, B, C binding post Short circuit, by low-pressure side a, b, c binding post short circuit.Method of testing：When surveying high-pressure side to low-pressure side, J10/J11/J12/ is controlled J13/J14/J15 is opened, and surveys high-pressure side to controlling J10/J11/J12/J13/J14/J16 during PE, when surveying low-pressure side to PE, control J10/J11/J12/J13/J14/J15/J16 is opened.The coil of relay is controlled by controller.

Referring to Fig. 3, the Insulation Resistance of Transformer test of the present embodiment includes three groups of megger tests with training module and used Resistive load, first group of megger test resistive load in three groups of megger test resistive loads, three groups of insulation Second group of megger test resistive load in resistance test resistive load, three groups of megger test resistive loads In the 3rd group of megger test resistive load.Every group of megger test resistive load includes an insulaion resistance and surveyed Resistive load on probation.The present invention can realize that the insulation of analogue transformer is surveyed by the megger test resistive load of setting Examination.The present invention with resistive load both ends in megger test by being parallel with megger test capacitive load, Ke Yishi Existing analogue transformer absorptance test.

The physical circuit of the Insulation Resistance of Transformer test training module of the present embodiment is as follows：Megger test hinders Property load HV-R1 one end be connected by relay K4 normally opened contact with node A6, megger test resistive load HV- The R1 other end is connected by relay K5 normally opened contact with node a6, megger test capacitive load CD2 and insulation Resistance test is in parallel with resistive load HV-R1, and the megger test passes through relay K6 with resistive load HV-R3 one end Normally opened contact be connected with node A6, megger test passes through the normally opened of relay K7 with the resistive load HV-R3 other end Contact is connected with node PE6, megger test with capacitive load CD16 and megger test resistive load HV-R3 simultaneously Connection, megger test are connected with resistive load HV-R5 one end by relay K8 normally opened contact with node a6, insulated electro Resistance test is connected with the resistive load HV-R5 other end by relay K9 normally opened contact with node PE6.Megger test It is in parallel with megger test resistive load HV-R5 with capacitive load CD35.Relay K4, relay K5 coil one end It is grounded, relay K4, the relay K5 other end of coil are connected with the output end OUTPUT0 of controller.Relay K6, One end of relay K7 coil is grounded, relay K6, relay K7 coil output end of the other end with controller OUTPUT1 connections.Relay K8, relay K9 one end of coil are grounded, relay K8, relay K9 coil it is another End is connected with the output end OUTPUT2 of controller.Node A6, a6, PE6 can respectively directly with high-pressure side A binding posts, low Press side a binding posts, ground terminal connection.Preferably, the normal of relay K1 is passed through between node A6 and high-pressure side A binding posts Contact portion is opened, is connected between node a6 and low-pressure side a binding posts by relay K2 normally opened contact, node PE6 is with connecing Connected by relay K3 normally opened contact between ground terminal, relay K1 coil, relay K2 coil, relay K3 One end of coil is grounded, relay K1 coil, relay K2 coil, relay K3 coil the other end respectively with control Output end OUTPUT6, OUTPUT7, OUTPUT8 electrical connection of device processed.Controller can distinguish control relay K1 coil, after The energization or power-off of electrical equipment K2 coil, relay K3 coil.

When measuring insulaion resistance, by A, B, C three-phase short circuit, a, b, c three-phase short circuit.Such as when measuring transformer height is to low exhausted During edge resistance, A, B, C three-phase short circuit connect megameter both ends after a, b, c three-phase short circuit, and megameter provides dc source.Therefore, When measuring high-pressure side to low insulation resistance, high-pressure side insulation against ground resistance and low-pressure side insulation against ground resistance, A can be made to represent High-pressure side, a represent low-pressure side, and PE represents ground.The present invention substitutes transformer winding wire using the method for capacitor parallel resistance Circle, and can it can mitigate weight of equipment, cost-effective on the premise of ensureing to realize experiment close to reality.It is simultaneously enhancing simulation The practicality of transformer, increases a set of stand-by circuit, student can 2 people operate the computer simultaneously.Megger test partial circuit is such as Under：

When measurement height is to low insulation resistance, relay K1, K2, K4 and K5 closure, other relays disconnect, can now carried out Height is to low insulation resistance measurement.Same method can measure high-pressure side insulation against ground resistance and low-pressure side insulation against ground resistance. The present invention can also carry out absorptance test.Absorptance refer to megameter to transformer insulated pressing time is 60s and 15s when, survey The ratio of the insulaion resistance of amount.When carrying out insulation measurement, the size of insulaion resistance when can obtain 60s and 15s, its ratio The as absorptance of the capacity transformer.

Because megameter model is different, such as：5000V, 2500V, 1000V, 500V etc. are by mistake higher using voltage to prevent Megameter, causes that electric capacity in part of detecting circuit is breakdown, and the present invention devises Anti-misoperation circuit, such as Fig. 4, such as low-pressure side pair , it is specified that use megameter as 500V when PE tests insulaion resistance, if now using 1000V, Anti-misoperation circuit can be with Detect, so as to control corresponding controlling switch not close.

Referring to Fig. 4, the Insulation Resistance of Transformer test is additionally provided with Anti-misoperation circuit, the anti-error behaviour with training module Making circuit includes controller, and the controller is used to gather respectively between high-pressure side binding post and low-pressure side binding post, is low Press between side terminal and ground terminal, the input voltage between high-pressure side binding post and ground terminal, and respectively with it is right The setting value answered is compared, and when the input voltage of collection is more than setting value, controls Insulation Resistance of Transformer test real training Corresponding controlling switch in module can not close, and prevent the measurement of corresponding insulaion resistance from being normally carried out, and output alarm signal Carry out alarm.

Between the high-pressure side binding post and low-pressure side binding post, between low-pressure side binding post and ground terminal, Bleeder circuit is connected between high-pressure side binding post and ground terminal.Preferably, each bleeder circuit passes through controlling switch Be connected between high-pressure side binding post and low-pressure side binding post, between low-pressure side binding post and ground terminal, it is high Press between side terminal and ground terminal.The partial pressure output end of each bleeder circuit connects with the input of AD conversion module respectively Connect, the AD conversion module is used to gather the voltage after each bleeder circuit partial pressure respectively, and is converted into data signal and passes to control Device processed, the controller are used for by the data signal of AD conversion module transmission compared with setting value, when AD conversion module passes When the data signal passed is more than setting value, control the corresponding controlling switch in Insulation Resistance of Transformer test training module can not Closure, prevents the measurement of corresponding insulaion resistance from being normally carried out, and output alarm signal carries out alarm.

Referring to Fig. 4, Insulation Resistance of Transformer test is additionally provided with Anti-misoperation circuit, the anti-misoperation electricity with training module Road includes three bleeder circuits, and one end of the first bleeder circuit passes through relay K16 normally opened contact and high-pressure side A binding posts Connection, the other end of the first bleeder circuit are connected by relay K16 normally opened contact with ground terminal.First bleeder circuit The first input end of partial pressure output end and AD conversion module connects.One end of second bleeder circuit is normally opened by relay K17's Contact is connected with high-pressure side A binding posts, the normally opened contact and low-pressure side that the other end of the second bleeder circuit passes through relay K17 A binding posts connect.The partial pressure output end of second bleeder circuit and the second input of AD conversion module connect.3rd partial pressure electricity The one end on road is connected by relay K18 normally opened contact with low-pressure side a binding posts, and the other end of the 3rd bleeder circuit passes through Relay K18 normally opened contact is connected with ground terminal.The partial pressure output end of 3rd bleeder circuit and the 3rd of AD conversion module the Input connects.When the data signal of AD conversion module transmission is more than setting value, the test of control Insulation Resistance of Transformer is real Relay K1, K2, K3 in instruction module can not be closed, and prevent the measurement of corresponding insulaion resistance from being normally carried out, and export alarm Signal carries out alarm.Relay K16 coil, relay K17 coil, relay K18 one end of coil are grounded, Relay K16 coil, relay K17 coil, relay K18 coil the other end output end with controller respectively OUTPUT9, OUTPUT10, OUTPUT11 are electrically connected.Controller can distinguish control relay K16 coil, relay K17 Coil, relay K18 coil energization or power-off.Each bleeder circuit is made up of two resistance connected, or by a change Hinder device composition.

When measurement height is to low insulation resistance, relay K17 closures；When measuring high insulation against ground resistance, relay K16 Closure；When measuring low insulation against ground resistance, relay K18 closures.Corresponding Anti-misoperation circuit path.

Because the input voltage of a/d converter can only be between -5.12V~+5.12V, resistance R1 selects with resistance R2 sizes For 1：1000 and selection high-tension resistive, such as R1=1 M, the M of R2=1000, then obtained according to series connection voltage division formulas：Uin=U Megameter ×.As U megameters=± 5000V, Uin ≈ ± 5.00V；As U megameters=± 2500V, Uin ≈ ±2.50V；As U megameters=± 500V, Uin ≈ ± 0.50V.

Analog signal is switched into data signal from a/d converter, for example with ADC0809 conversion modules.The module " 0V " is defaulted as with reference to negative voltage, need to first pass through program will be adjusted to " -5.12V " with reference to negative voltage（Satisfy the requirements）.The module turns Changing chip has the acquisition time port IN0-IN7 of 8 tunnel analog signals, there is 8 tunnels simulation gating switch and corresponding passage in piece Address latch decoding circuit, its conversion time are 100 μ s or so.According to address latch and decoding circuit to ADDRO (A), 3 ADDR1 (B), ADDR2 (C) address bits are latched and decoded, and it decodes output and is used for channel selecting, and its transformation result is led to The storage of ternary output latch, output are crossed, therefore directly can be connected with system data bus.Channel selecting table is as follows：

Known by channel selecting table, 3 address bits corresponding to the collection port IN0-IN2 of the design are respectively：000,001 and 010. Converter connects single-chip microcomputer, by the digital data transmission of conversion into single-chip microcomputer, reaches voltage acquisition output purpose.Pass through journey again Sequence control single chip computer is handled data, and the break-make of control circuit relay.

Analog quantity after input voltage Uin is handled compared with reference quantity is converted into representing discrete letter with binary numeral Number.The greatest measure that converter can quantify is 2^8=256 unit, range use -5.12V~+5.12V, then full scale Voltage divided by maximum quantization unit just obtain analog voltage corresponding to a quantization unit, and Δ U=（5.12-（-5.12））V÷256 =0.04V.So, when input voltage Uin is+5.00V, corresponding decimal number is (5.00- (- 5.12)) ÷ 0.04=253, Corresponding binary digit is 11111100.Similarly, when output voltage Uin is -5.00V, corresponding decimal number for (- 5.00- (- 5.12)) ÷ 0.04=3, corresponding binary system is 00000011；When output voltage Uin is+2.50V, corresponding binary system For 00111110；When output voltage Uin is -2.50V, corresponding binary system is 01000001；When output voltage Uin is+0.50V When, corresponding binary system is 01110001；When output voltage Uin is 0.99V, corresponding binary system is 10001110.Certainly, use Manual megohmmeter spread of voltage, error are existing for affirmative, but its maximum voltage is not over megameter range.

After input voltage, it is delayed certain time, data signal is less than binary number corresponding to circuit maximum working voltage During word, disconnected by relay K16, K17, K18 of programme-control Anti-misoperation circuit, the relay of insulation resistance test circuit K1, K2, K3 are closed, and now can normally measure insulaion resistance, after the completion of experiment, the relay K1 of insulation resistance test circuit, K2, K3 disconnect, relay K16, K17, K18 closure of Anti-misoperation circuit.When data signal is more than circuit maximum working voltage It during corresponding binary digit, can not be closed, and alarmed by programme-control K1, K2, K3, can used existing any applicable Type of alarm, such as display screen, acousto-optic.

The transformer capacity test is born including volume test with training module with resistive load, volume test with capacitive Carry, the one or more in volume test inductive load, each volume test is connected respectively with resistive load by controlling switch Between each high-pressure side binding post, each volume test is connected to each high-pressure side with capacitive load by controlling switch Between binding post, each volume test with inductive load by controlling switch be connected to each high-pressure side binding post it Between, transformer capacity test is electrically connected with the controller with each controlling switch of training module, and the controller is used for according to behaviour The command signal output control signal of work person, control the closure or disconnected of each controlling switch of transformer capacity test training module Open, realize the volume emulation of transformer.It is arranged on volume test capacitive load between two high-pressure side binding posts, capacity Resistive load serial or parallel connection is used in test, is arranged on the volume test inductive load between two high-pressure side binding posts, is held Measure resistive load serial or parallel connection on probation, be arranged on volume test inductive load between two high-pressure side binding posts, Volume test capacitive load serial or parallel connection, any connection, forms various combinations.Be arranged on two high-pressure side binding posts it Between volume test resistive load, volume test inductive load, volume test capacitive load can be with three kinds of series connection, can be with Three kinds of parallel connections, can two kinds be in series with another parallel connection, can also be connected with another kind after two kinds of parallel connections etc..

Referring to Fig. 5, transformer capacity test is with a kind of structure of training module：The transformer capacity test real training Module includes volume test resistive load and volume test capacitive load, is arranged between two high-pressure side binding posts Volume test capacitive load, volume test are in parallel with resistive load, volume test resistive load is held with volume test Property load form different combination access loops, correspond to the transformer of simulation different capabilities respectively.

In order to realize a variety of volume emulations of transformer, the transformer capacity test includes more pool-sizes with training module Test resistive load, included per pool-size test with resistive load between high-pressure side A binding posts and high-pressure side C binding posts The first volume test resistive load, and the second capacity between high-pressure side B binding posts and high-pressure side C binding posts surveys The 3rd volume test resistive load on probation between resistive load and high-pressure side A binding posts and high-pressure side B binding posts.Institute The one end for stating the first volume test resistive load electrically connects with node A2, the first volume test resistive load it is another End electrically connects with node C2, and one end of the second volume test resistive load electrically connects with node B2, second capacity The other end of test resistive load electrically connects with node C2, one end and the node A2 of the 3rd volume test resistive load Electrical connection, the other end of the 3rd volume test resistive load electrically connect with node B2, and node A2 passes through relay K5's Normally opened contact is connected with node A1, and node B2 is connected by relay K26 normally opened contact with node B1, and node C2 passes through relay Device K12 normally opened contact is connected with node C1.Relay K5 coil, relay K26 coil, relay K12 coil One end is grounded, and relay K5 coil, relay K26 coil, the relay K12 other end of coil pass through relay K19 normally opened contact and DC voltage（Such as 5V）Electrical connection, one end of relay K19 coil and DC voltage（Such as 5V）It is electrically connected Connect, the other end of relay K19 coil electrically connects with the output end of controller.Controller can be with control relay K19 coils Energization or power-off, and whether the energization of relay K19 coils has indicator lamp prompting.

Referring to Fig. 5, the transformer capacity test also includes volume test capacitive load, each high pressure with training module At least one set of volume test capacitive load, two high pressure side terminals are respectively connected with by controlling switch between side terminal Volume test capacitive load, volume test resistive load serial or parallel connection between son, make volume test resistive load The combinations different with capacitive load composition from volume test access loop, correspond to the transformer of simulation different capabilities respectively.In order to A variety of volume emulations of transformer are realized, the transformer capacity test is born with training module including multigroup volume test with capacitive Carry, surveyed per pool-size test with capacitive load including the first capacity between high-pressure side A binding posts and high-pressure side C binding posts Capacitive load on probation, and the second volume test capacitive load between high-pressure side B binding posts and high-pressure side C binding posts The 3rd volume test capacitive load between high-pressure side A binding posts and high-pressure side B binding posts.First capacity is surveyed One end of capacitive load on probation electrically connects with node A3, the other end and the node C3 electricity of the first volume test capacitive load Connection, one end of the second volume test capacitive load are electrically connected with node B3, and second volume test is born with capacitive The other end of load electrically connects with node C3, and one end of the 3rd volume test capacitive load electrically connects with node A3, described The other end of 3rd volume test capacitive load electrically connects with node B3, node A3 by relay K49 normally opened contact with Node A1 connections, node B3 are connected by relay K70 normally opened contact with node B1, and node C3 is normal by relay K56's Contact is opened to be connected with node C1.Relay K49 coil, relay K70 coil, relay K56 one end of coil connect Ground, relay K49 coil, relay K70 coil, the relay K56 other end of coil pass through the normal of relay K63 Open contact and DC voltage（Such as 5V）Electrical connection, one end of relay K63 coil and DC voltage（Such as 5V）Electrical connection, relay The other end of device K63 coil electrically connects with the output end of controller.Controller can with the energization of control relay K63 coils or Power-off, and whether the energization of relay K63 coils has indicator lamp prompting.

Referring to Fig. 5, node A1, B1, C1 directly can be connected with high-pressure side A, B, C binding post respectively.Preferably, node Connected between A1 and high-pressure side A binding posts by relay J5 normally opened contact, between node B1 and high-pressure side B binding posts Connected by relay J7 normally opened contact, pass through relay J6 normally opened contact between node C1 and high-pressure side C binding posts Connection, relay J5 coil, relay J7 coil, relay J6 one end of coil are grounded, relay J5 coil, Relay J7 coil, the other end of relay J6 coil pass through relay K90 normally opened contact and DC voltage（Such as 5V）Electrical connection, one end of relay K90 coil and DC voltage（Such as 5V）Electrical connection, the other end of relay K90 coil Electrically connected with the output end of controller.Controller can be with the energization or power-off of control relay K90 coils, and relay K90 lines Whether the energization of circle has indicator lamp prompting.The both ends of the coil of relay are parallel with diode, the plus earth of the diode.

Each capacitive load uses capacitor, and resistive load uses resistance.

Power transformers are made up of coil windings, but coil can be divided into resistance in analog circuit and be formed with reactance. In transformer capacity test, we respectively dock the a/b/c/N binding posts of the low-pressure side of transformer（Short circuit）, allow them Loop is formed, on high-tension side A/B/C three-phases are being docked by transformer capacity tester, one is provided by transformer capacity tester Voltage, it is possible to which it is how many to have transformer capacity tester to test out the capacity of this transformer.

Analogue transformer simulation volume test of the present invention uses resistance and capacitor combination, simulates the volume of power transformer respectively Fixed number evidence, as K5, K12, K19, K26, K49, K56, K63, K70, K90 are relay in Fig. 5, R5, R12, R19 are resistance, CD5, CD12, CD19 are capacitor.When analogue transformer volume test, when operating personnel select volume test, program life Make K19, K63, K90 close, while control the relay of other combined capacity circuits not close.Now K5, K12, K26, K49, K56, K70, J5, J6, J7 are closed, and transformer capacity tester access high-pressure side is then carried out volume test.K90 work With being the K90 off-states when analogue transformer carries out energizing test, prevent voltage enters from burning out test board.

The KM1 when carrying out capacity and insulation and loss test（Fig. 1）It can not close.

The combination of electric capacity and resistance has some groups in transformer capacity test training module, corresponds to the kind of simulation not respectively With the transformer of capacity.

Referring to Fig. 6, transformer capacity test is with another structure of training module：The transformer capacity test is real Instruction module includes volume test resistive load and volume test inductive load, is arranged between two high-pressure side binding posts Volume test connected with inductive load, volume test with resistive load.The transformer capacity test is included with training module One or more groups of volume test inductive loads, include the first volume test with inductive load per pool-size test and born with perception Carry, the second volume test is with inductive load, the 3rd volume test inductive load.

In order to realize a variety of volume emulations of transformer, the transformer capacity test includes more pool-sizes with training module Test resistive load, include the first volume test resistive load, the second volume test with resistive load per pool-size test With resistive load, the 3rd volume test resistive load.Each high-pressure side binding post is connected with node A4, B4, C4 respectively.It is excellent Selection of land, relay J25 normally opened contact is provided between node A4, B4, C4 and each high-pressure side binding post.Node A4, B4, C4 Respectively with the first volume test resistive load, the second volume test resistive load, the 3rd volume test resistive load One end connects, and the first volume test is with resistive load, the second volume test with resistive load, the 3rd volume test resistive load The other end be connected respectively with node A5, B5, C5 by relay J26 normally opened contact.Node A5, B5, C5 are respectively with first One end connection of volume test inductive load, the second volume test inductive load, the 3rd volume test inductive load, the One volume test inductive load, the second volume test inductive load, the other end point of the 3rd volume test inductive load It is not connected with low-pressure side a, b, c binding post.Needed the mutual short circuit of low-pressure side a, b, c binding post during test.Preferably, One volume test inductive load, the second volume test inductive load, the 3rd volume test with inductive load respectively with it is each Relay J29 normally opened contact is provided between low-pressure side binding post.The present apparatus is in volume test, each low pressure side terminal Need to be connected with wire between son, make to form loop between each high-pressure side binding post.Each relay passes through controller respectively Control.Preferably, resistive load is resistance, and inductive load is transformer.

Referring to Fig. 7, the transformer voltage ratio module for testing includes bleeder circuit, and high-pressure side A, B, C binding post and N connect Bleeder circuit is respectively connected with by controlling switch between line terminals, the partial pressure output end of each bleeder circuit passes through controlling switch point Dui Ying be connected with low-pressure side a, b, c binding post, each controlling switch of transformer voltage ratio module for testing respectively with controller Electrical connection, the controller are used for the command signal output control signal according to operator, control transformer voltage ratio test mould The closure of each controlling switch of block or disconnection.

In order to realize that a variety of no-load voltage ratios of transformer are simulated, the transformer voltage ratio module for testing includes multicomponent piezoelectricity Road, the intrinsic standoff ratio per component volt circuit is different, includes per component volt circuit between high-pressure side A binding posts and N binding posts The first bleeder circuit, and the second bleeder circuit between high-pressure side B binding posts and N binding posts and high-pressure side C wiring The 3rd bleeder circuit between terminal and N binding posts.Multigroup bleeder circuit is arranged in parallel in high-pressure side binding post and N wiring Between terminal, switched between each group bleeder circuit by controlling switch.Each bleeder circuit is made up of two resistance connected, or It is made up of a rheostat.Rheostat can use the rheostat of regulation intrinsic standoff ratio manually, can also use and pass through control Device can adjust the rheostat of intrinsic standoff ratio, such as magnetic control rheostat.The no-load voltage ratio test function simulation of the present invention uses resistance, due to Resistance is adjustable, precision is high so that intrinsic standoff ratio precision is also high, is easy to design circuit, small volume, cost be low and the performance of resistance It is stable.10KVA/0.4KVA no-load voltage ratio is such as simulated, can be fast when circuit of the invention is tested after debugging with no-load voltage ratio tester Speed, it is accurate to up to 10KVA/0.4KVA.When each bleeder circuit, which uses, can adjust the rheostat of intrinsic standoff ratio by controller, Only a component volt circuit need to be set between high-pressure side binding post and N binding posts.

Referring to Fig. 7, the transformer voltage ratio module for testing of the present embodiment is provided with three component volt circuits.The of the present embodiment First bleeder circuit of one component volt circuit, the second bleeder circuit, one end of the 3rd bleeder circuit pass through the normally opened of relay J3 Contact is connected with node A7, B7, C7 respectively, the first bleeder circuit, the second bleeder circuit, the 3rd the partial pressure electricity per component volt circuit The other end on road is connected with N binding posts.The first bleeder circuit, the second bleeder circuit, the 3rd partial pressure electricity per component volt circuit The partial pressure output end on road is connected with node a7, b7, c7 respectively by relay J6 normally opened contact.The of second component volt circuit One bleeder circuit, the second bleeder circuit, the 3rd bleeder circuit one end by relay J4 normally opened contact respectively with node A7, B7, C7 are connected, per the first bleeder circuit, the second bleeder circuit, the other end of the 3rd bleeder circuit and the N wiring of component volt circuit Terminal connects.The first bleeder circuit, the second bleeder circuit, the partial pressure output end of the 3rd bleeder circuit per component volt circuit pass through Relay J7 normally opened contact is connected with node a7, b7, c7 respectively.First bleeder circuit of third component volt circuit, second point Volt circuit, one end of the 3rd bleeder circuit are connected with node A7, B7, C7 respectively by relay J5 normally opened contact, per component The first bleeder circuit, the second bleeder circuit, the other end of the 3rd bleeder circuit of volt circuit are connected with N binding posts.Per component First bleeder circuit of volt circuit, the second bleeder circuit, the partial pressure output end of the 3rd bleeder circuit pass through the normally opened of relay J8 Contact is connected with node a7, b7, c7 respectively.Node A7, B7, C7 are connected with high-pressure side A, B, C binding post respectively.Preferably, Relay J3 normally opened contact is provided between node A7, B7, C7 and high-pressure side A, B, C binding post.Node a7, b7, c7 distinguish It is connected with low-pressure side a, b, c binding post.Preferably, between node a7, b7, c7 and low-pressure side a, b, c binding post be provided with after Electrical equipment J9 normally opened contact.The present invention can control the energization of the coil of each relay, power-off by controller, can also pass through Shunting switch SB1 on transformer controls the energization of the coil of each relay, power-off, and control no-load voltage ratio opens test.

The present embodiment simulates 3 kinds of no-load voltage ratio tests of transformer, and the first is to open shunting switch SB1-0 shelves, controller control System automatically turns on J2/J3/J6/J9, and the 2nd kind is to open shunting switch SB1-2 shelves, and controller control automatically turns on J2/J4/J7/ J9, the 3rd kind is to open shunting switch SB1-0 shelves, and controller control automatically turns on J2/J5/J8/J9.

Referring to Fig. 8, the DCR of Transformer module for testing includes D.C. resistance test resistive load, Ge Gegao At least one set of D.C. resistance test resistive load, each low-pressure side are respectively connected with by controlling switch between pressure side terminal At least one set of D.C. resistance test resistive load, DCR of Transformer are respectively connected with by controlling switch between binding post Each controlling switch of module for testing is electrically connected with the controller respectively, and the controller is defeated for the command signal according to operator Go out control signal, control closure or the disconnection of each controlling switch of transformer DCR of Transformer module for testing, realize and become Resistance simulation between each winding of depressor.

Referring to Fig. 8, the present embodiment DCR of Transformer module for testing includes three groups of high-pressure side D.C. resistance tests and used Resistive load and three groups of low-pressure side D.C. resistance test resistive loads.First group of high-pressure side D.C. resistance test resistive load The first high-pressure side D.C. resistance test resistive load, the second high-pressure side D.C. resistance test resistive load, the 3rd high pressure One end of side D.C. resistance test resistive load is connected with node A8, B8, C8 respectively by relay J18 normally opened contact, The first high-pressure side D.C. resistance test resistive load, the second high pressure of first group of high-pressure side D.C. resistance test resistive load Side D.C. resistance test resistive load, the other end of the 3rd high-pressure side D.C. resistance test resistive load connect with node A9 Connect.First high-pressure side D.C. resistance test resistive load of second group of high-pressure side D.C. resistance test resistive load, second High-pressure side D.C. resistance test resistive load, one end of the 3rd high-pressure side D.C. resistance test resistive load pass through relay J19 normally opened contact is connected with node A8, B8, C8 respectively, and the first of second group of high-pressure side D.C. resistance test resistive load High-pressure side D.C. resistance test resistive load, the second high-pressure side D.C. resistance test resistive load, the 3rd high-pressure side direct current The other end of resistance test resistive load is connected with node A9.3rd group of high-pressure side D.C. resistance test resistive load First high-pressure side D.C. resistance test resistive load, the second high-pressure side D.C. resistance test resistive load, the 3rd high-pressure side One end of D.C. resistance test resistive load is connected with node A8, B8, C8 respectively by relay J20 normally opened contact, the First high-pressure side D.C. resistance test resistive load of three groups of high-pressure side D.C. resistance test resistive loads, the second high-pressure side D.C. resistance test resistive load, the other end of the 3rd high-pressure side D.C. resistance test resistive load connect with node A9 Connect.Node A8, B8, C8 are connected with high-pressure side A, B, C binding post respectively.Preferably, node A8, B8, C8 and high-pressure side A, B, C Relay J17 normally opened contact is provided between binding post.

The first low-pressure side D.C. resistance test resistive load of first group of low-pressure side D.C. resistance test resistive load, Second low-pressure side D.C. resistance test resistive load, the 3rd low-pressure side D.C. resistance test resistive load one end by after Electrical equipment J21 normally opened contact is connected with node a8, b8, c8 respectively, first group of low-pressure side D.C. resistance test resistive load First low-pressure side D.C. resistance test resistive load, the second low-pressure side D.C. resistance test resistive load, the 3rd low-pressure side The other end of D.C. resistance test resistive load is connected with N binding posts.Second group of low-pressure side D.C. resistance test resistance Property the first low-pressure side D.C. resistance test resistive load of load, the second low-pressure side D.C. resistance test resistive load, the One end of three low-pressure side D.C. resistance test resistive loads by relay J22 normally opened contact respectively with node a8, b8, c8 Connection, the first low-pressure side D.C. resistance of second group of low-pressure side D.C. resistance test resistive load, which is tested, uses resistive load, the Two low-pressure side D.C. resistances test resistive load, the 3rd low-pressure side D.C. resistance test resistive load the other end and N Binding post connects.First low-pressure side D.C. resistance of the 3rd group of low-pressure side D.C. resistance test resistive load is tested with resistive Load, the second low-pressure side D.C. resistance test resistive load, one end of the 3rd low-pressure side D.C. resistance test resistive load It is connected respectively with node a8, b8, c8 by relay J23 normally opened contact, the 3rd group of low-pressure side D.C. resistance is tested with resistive The first low-pressure side D.C. resistance test resistive load of load, the second low-pressure side D.C. resistance are tested with resistive load, the 3rd The other end of low-pressure side D.C. resistance test resistive load is connected with N binding posts.Node a8, b8, c8 respectively with low pressure Side a, b, c binding post connection.Preferably, relay J24 is provided between node a8, b8, c8 and low-pressure side a, b, c binding post Normally opened contact.

The method of testing of the present embodiment D.C. resistance is：D.C. resistance is the resistance between each winding of measurement, such as measures high pressure Resistance between each winding in side opens J17, J18 either J17, J19 or J17, J20, draws R（AB）、R（BC）、R（AC）Value, Here it is the test of high-pressure side D.C. resistance, similarly measure the resistance between each winding of low-pressure side open J21, J24 or J22, J24 or Person J23, J24, draw Rab, Rac, Rbc, Ran, Rbn, Rcn, here it is the test of low-pressure side D.C. resistance.

Referring to Fig. 9, transformer loss test training module includes power supply change-over device and controllable negative of power Carry and put, the input of the power supply change-over device is connected with high-pressure side binding post, the output end of the power supply change-over device The load device controllable with power is connected, and the power supply change-over device is used to high voltage becoming low-voltage and changes alternating voltage For the DC voltage load device power supply controllable to power, the controllable load device of the power is electrically connected with the controller, described Controller is used for the command signal output control signal according to operator, adjusts the power of load device, the damage of analogue transformer Wasted work rate.The power supply change-over device can use transformer and rectification module, can also use Switching Power Supply etc..

The training module of transformer loss test described in the present embodiment includes transformer T1, transformer T2, transformer T3, whole Flow module ZLQ1, rectification module ZLQ2, rectification module ZLQ3, transformer T1 primary side one end and high-pressure side A binding posts connect Connect, transformer T2 primary side one end is connected with high-pressure side B binding posts, and transformer T3 primary side one end and high-pressure side C connect Line terminals are connected, and transformer T1, T2, T3 the primary side other end are connected with N binding posts, and the two of transformer T1 secondary side End is connected with rectification module ZLQ1 two inputs respectively, the both ends of transformer T2 secondary side respectively with rectification module ZLQ2 Two inputs connection, the both ends of transformer T3 secondary side are connected with rectification module ZLQ3 two inputs respectively, whole Electric capacity C10 is in series between flow module ZLQ1 two output ends, electricity is in series between rectification module ZLQ2 two output ends Hold C2, electric capacity C3 be in series between rectification module ZLQ3 two output ends, after electric capacity C1, electric capacity C2, electric capacity C2 series connection with work( Two inputs connection of the controllable load device of rate.The rectification module uses rectifier bridge.

The controllable load device of the power includes DC speed regulator and loss test resistive load, the DC speed regulation The input of device and the output end of rectification module connect, and each loss test resistive load passes through each controlling switch and DC speed regulation The adjustable side connection of device, the output end of the DC speed regulator are connected with a resistive load.Also may be used the adjustable side of DC speed regulator To connect an adjustable rheostat of resistance, the rheostat can adjust its resistance by controller.

Test philosophy：What it is because of transformer loss test addition is 380V three phase mains, and voltage is reduced to by transformer In the range of 0-50V, entering over commutation bridge AC-DC, RI is the resistance of certain resistance power, adjusts DC speed regulator, I Using controller control DC speed regulator（KA+R is combined）, power is changed to simulate the loss work(of power transformer Rate.

Energizing test transformer, the examination that is powered are set between the high-pressure side binding post and low-pressure side binding post Test and be connected to transformer by controlling switch between high-pressure side binding post and low-pressure side binding post, the controlling switch with Controller electrically connects, and the controller is used for the command signal output control signal according to operator, controls the controlling switch Closure disconnects, and carries out energizing test.The controlling switch uses contactor KM1.Preferably, energizing test with transformer use every From transformer, and it is the transformer that three lines become four lines.After controlling each test to be disconnected with corresponding binding post with training module, It can just control KM1 to close, carry out energizing test.Portable casing is such as used, then is typically not provided with energizing test transformer, Energizing test can not be carried out, capacity, insulation, absorptance, loss test may only be carried out.Such as using sandwich type element is emulated, then both Capacity, insulation, absorptance, loss test can be carried out, energization test can also be carried out.

Present invention additionally comprises transformer to emulate housing, and each test is arranged at change with training module, controller, power module In depressor emulation housing.The emulation sandwich type element uses real transformer housing.The high-pressure side binding post and low-pressure side wiring Terminal corresponds to respectively to be electrically connected with the corresponding insulator on emulation sandwich type element.Certainly, each test training module, controller, Power module can also be not arranged in transformer emulation housing, but is additionally provided in a single cabinet, and will be become Depressor emulation housing is fixed on the cabinet.

Each test training module, controller, power module can also be arranged in a portable casing, described portable Formula casing be provided with high-pressure side A, B, C binding post, low-pressure side a, b, c, N binding post, ground terminal, power supply terminal and Communication connection terminal, touch-screen etc..

Protection circuit, the protection electricity are provided between the power supply terminal and power supply binding post of this analogue transformer Road includes breaker, leakage guarantor, the second contactor KM2 being arranged between power supply terminal and binding post of powering.Power supply connects After line terminals are powered, the first indicator lamp is bright, close circuit breaker, and the second indicator lamp is bright, and relay J1 coil electricity, relay J1 normally-closed contact disconnects, and the first indicator lamp goes out.Leakage, which is protected, opens, and the 3rd indicator lamp is bright, and second contactor KM2 coil leads to Electricity, second contactor KM2 main contacts closure, power supply binding post obtain it is electric, export give power module power supply, now, second connects Tentaculum KM2 normally-closed contact disconnects, and the second indicator lamp goes out.Power supply terminal and power supply binding post between be provided with voltmeter and Ammeter.

This analogue transformer can see the external structure of real transformer, have transformer function to carry out again conventional Electrical test, capacity, absorptance, insulaion resistance, no-load voltage ratio, D.C. resistance, loss test are such as carried out, and use electronics and electrician Mode is that electronic circuit or module substitute iron core and coil in real transformer etc., to realize the mould of transformer various functions Intend, and an analogue transformer can carry out the simulation such as different capabilities, no-load voltage ratio, for teaching, training, have wide adaptation range, disappear The power of consumption is small, is the preferable choosing as teaching operation training such as electric power teaching, training demonstration the features such as being actually consistent with scene Select.The structure and general idea of each module for testing of the present invention are equally applicable to single-phase transformer.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, it is clear that those skilled in the art Member can carry out various changes and modification without departing from the spirit and scope of the present invention to the present invention.So, if the present invention These modifications and variations belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to include these Including change and modification.

Claims

A kind of 1. transformer capacity simulation and training device, it is characterised in that：Used including volume test resistive load, volume test One or more in capacitive load, volume test inductive load, each volume test resistive load pass through controlling switch point It is not connected between each high-pressure side binding post, each volume test is connected to each with capacitive load by controlling switch Between the binding post of high-pressure side, each volume test is connected to each high pressure side terminal with inductive load by controlling switch Between son, each controlling switch is electrically connected with the controller, and the controller is used for the command signal output control according to operator Signal, closure or the disconnection of each controlling switch are controlled, realize the volume emulation of transformer.
2. transformer capacity simulation and training device according to claim 1, it is characterised in that：It is arranged on two high pressure side joints Volume test capacitive load, volume test resistive load serial or parallel connection between line terminals, are arranged on two high-pressure sides Volume test inductive load, volume test resistive load serial or parallel connection between binding post, are arranged on two high pressures Volume test inductive load, volume test capacitive load serial or parallel connection between side terminal, are arranged on two height The volume test resistive load between side terminal, volume test inductive load, volume test is pressed to be appointed with capacitive load Meaning connection, forms various combinations.
3. transformer capacity simulation and training device according to claim 1 or 2, it is characterised in that：Volume test real training Device includes one or more groups of volume test resistive loads, is used per pool-size test with resistive load including the first volume test Resistive load, the second volume test resistive load, the 3rd volume test resistive load, first volume test is with resistive Load is connected between high-pressure side A binding posts and high-pressure side C binding posts by controlling switch, and second volume test is used Resistive load is connected between high-pressure side B binding posts and high-pressure side C binding posts by controlling switch, and the 3rd capacity is surveyed Resistive load on probation is connected between high-pressure side A binding posts and high-pressure side B binding posts by controlling switch.
4. transformer capacity simulation and training device according to claim 3, it is characterised in that：Transformer capacity simulation and training Device includes one or more groups of volume test capacitive loads, is used per pool-size test with capacitive load including the first volume test Capacitive load, the second volume test capacitive load, the 3rd volume test capacitive load, the first volume test capacitive Load is connected between high-pressure side A binding posts and high-pressure side C binding posts by controlling switch, and second volume test is used Capacitive load is connected between high-pressure side B binding posts and high-pressure side C binding posts by controlling switch, and the 3rd capacity is surveyed Capacitive load on probation is connected between high-pressure side A binding posts and high-pressure side B binding posts by controlling switch.
5. transformer capacity simulation and training device according to claim 4, it is characterised in that：First volume test is used One end of resistive load is electrically connected with node A2, and first volume test is electrically connected with the other end of resistive load with node C2 Connect, one end of the second volume test resistive load electrically connects with node B2, the second volume test resistive load The other end electrically connected with node C2, one end of the 3rd volume test resistive load electrically connects with node A2, described The other end of three volume test resistive loads electrically connects with node B2, the normally opened contact and node that node A2 passes through relay K5 A1 connections, node B2 are connected by relay K26 normally opened contact with node B1, and node C2 is touched by the normally opened of relay K12 Point is connected with node C1；One end of the first volume test capacitive load is electrically connected with node A3, and first capacity is surveyed The other end of capacitive load on probation electrically connects with node C3, one end and the node B3 electricity of the second volume test capacitive load Connection, the other end of the second volume test capacitive load electrically connect with node C3, the 3rd volume test capacitive One end of load electrically connects with node A3, and the other end of the 3rd volume test capacitive load electrically connects with node B3, knot Point A3 is connected by relay K49 normally opened contact with node A1, the normally opened contact and node B1 that node B3 passes through relay K70 Connection, node C3 are connected by relay K56 normally opened contact with node C1；By node A1, B1, C1 respectively with high-pressure side A, B, C binding posts electrically connect, or the normally opened contact between node A1 and high-pressure side A binding posts by relay J5 are connected, knot Connected between point B1 and high-pressure side B binding posts by relay J7 normally opened contact, node C1 and high-pressure side C binding posts it Between connected by relay J6 normally opened contact, each relay is controlled by controller.
6. transformer capacity simulation and training device according to claim 5, it is characterised in that：Relay K5 coil, after Electrical equipment K26 coil, one end of relay K12 coil are grounded, relay K5 coil, relay K26 coil, relay The other end of device K12 coil is electrically connected by relay K19 normally opened contact with DC voltage, relay K19 coil One end electrically connected with DC voltage, the other end of relay K19 coil electrically connects with the output end of controller；Relay K49 coil, relay K70 coil, relay K56 one end of coil are grounded, relay K49 coil, relay K70 coil, the other end of relay K56 coil are electrically connected by relay K63 normally opened contact with DC voltage, after One end of electrical equipment K63 coil electrically connects with DC voltage, the other end of relay K63 coil and the output end electricity of controller Connection；Relay J5 coil, relay J7 coil, relay J6 one end of coil are grounded, relay J5 coil, Relay J7 coil, the other end of relay J6 coil are electrically connected by relay K90 normally opened contact and DC voltage Connect, one end of relay K90 coil electrically connects with DC voltage, the other end of relay K90 coil and controller it is defeated Go out end electrical connection, the both ends of the coil of each relay are parallel with diode, the plus earth of the diode.
7. transformer capacity simulation and training device according to claim 1 or 2, it is characterised in that：The transformer capacity It is negative with perception that test training module includes one or more groups of volume test resistive loads and one or more groups of volume tests Carry, the first volume test resistive load of each group volume test resistive load, the second volume test resistive load, the 3rd With resistive load, the first volume test inductive load with each group volume test inductive load, second are held respectively for volume test Measurement inductive load on probation, the 3rd volume test are connected between node A4, B4, C4 and node a4, b4, c4 with inductive load, Each group volume test in multigroup volume test resistive load is in parallel with resistive load, and each group volume test resistive load Loop is accessed by controlling switch respectively, node A4, B4, C4 are directly connected or passed through with high-pressure side A, B, C binding post respectively Controlling switch is connected with high-pressure side A, B, C binding post, the direct short circuit of node a4, b4, c4.
8. transformer capacity simulation and training device according to claim 7, it is characterised in that：Multigroup volume test perception Each group volume test in load is in parallel with inductive load, and each group volume test is connect by controlling switch respectively with inductive load Entry loop.
9. transformer capacity simulation and training device according to claim 1, it is characterised in that：Each volume test is born with resistive Load uses resistance, and each volume test uses capacitor with capacitive load, and each volume test uses transformer or electricity with inductive load Sense.
10. transformer capacity simulation and training device according to claim 1, it is characterised in that：The controller is with calculating Machine or Digiplex are communicated, for receiving the command signal of computer or Digiplex, or, the controller with Touch-screen is communicated, for receiving the command signal of touch-screen.