CN103778827A

CN103778827A - Electric energy metering transformer detection simulation training and evaluation system

Info

Publication number: CN103778827A
Application number: CN201410009670.XA
Authority: CN
Inventors: 李刚; 龙东; 李伟坚; 卓浩泽; 朱少波; 李泰霖; 梁捷; 丁志华
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2014-01-09
Filing date: 2014-01-09
Publication date: 2014-05-07
Anticipated expiration: 2034-01-09
Also published as: CN103778827B

Abstract

The invention provides an electric energy metering transformer detection simulation training and evaluation system which comprises a teacher machine and student machines. The teacher machine includes an upper computer and an electric energy metering equipment actual detection platform. Each student machine includes a lower computer, a control machine connected in a communication mode with the lower computer, and electric energy metering transformer simulators connected with the control machine. According to the electric energy metering transformer detection simulation training and evaluation system, real-time simulation is carried out by the use of a computer to simulate the on-site working condition to the greatest extent, and under the condition that the appearance and functions of equipment are completely simulative, the input and output voltages are small, and reliable security guarantee can be provided for students in electric energy metering transformer training examination under safe working voltage.

Description

A kind of electric energy metrical mutual inductor detection simulation training and checking system

Technical field

The present invention relates to electric energy mutual-inductor field, relate in particular to a kind of electric energy metrical mutual inductor detection simulation training and checking system.

Background technology

Current domestic electric energy metering verification mobility of people is large, the renewal of knowledge is slow, professional knowledge and working level uneven, inter-disciplinary talent is on the low side, the technician who grasps mutual inductor field detecting technology is less, affect normal testing, mainly because training set lags behind, be with first-class training method mainly with concentration theory training, lecture experiment, written exam and with on-the-spot one at present, all have significant limitation, training efficiency is very low.

And training in actual environment, because electric energy measuring equipment has high voltage, large electric current, can produce potential safety hazard to the person and equipment, limit quality and the efficiency of training.

Can under the condition of low pressure, little electric current, operate if can provide a kind of, and function and complete standard potential transformer that is virtually reality like reality in appearance, so, the safe operation during to this equipment of electric energy metering verification staff training will be very favourable.

Summary of the invention

For addressing the above problem, the invention provides a kind of electric energy metrical mutual inductor detection simulation training and checking system, the student's machine that comprises teacher's machine, the communication connection of some and teacher's machine; Wherein,

Projector equipment, electric energy metrical mutual inductor detection entity platform that described teacher's machine comprises host computer, is connected with host computer; Described host computer is for controlling the communication of whole system, and the slave computer parameter that realizes student's machine issues, voltage transformer (VT) training function; Described electric energy metrical mutual inductor detects entity platform and comprises actual current lifting device, actual standard voltage transformer (VT), actual tested voltage transformer (VT), actual current Burden box, actual stepup transformer, actual standard voltage transformer (VT), actual tested voltage transformer (VT), actual current Burden box, actual tester, actual pressure regulator;

Described student's machine comprises slave computer, controller, pressure regulator, standard potential transformer simulator, standard current transformer simulator, tested voltage transformer (VT) simulator, tested current transformer simulator, stepup transformer simulator, current lifting device simulator, mutual-inductor tester simulator, voltage load box simulator, current loading case simulator with slave computer communication connection, described each simulator is all connected with controller, wherein

Described standard potential transformer simulator is for standard potential transformer simulator function that is virtually reality like reality;

Described tested voltage transformer (VT) simulator is for the function of tested voltage transformer (VT) that is virtually reality like reality;

Described voltage load box simulator is for voltage load box simulator that is virtually reality like reality;

Described current loading case simulator is for current loading case simulator that is virtually reality like reality;

Described stepup transformer simulator is for the function of stepup transformer that is virtually reality like reality;

Described standard current transformer simulator is for standard current transformer simulator function that is virtually reality like reality;

Described tested current transformer simulator is for the function of tested current transformer that is virtually reality like reality;

Described current lifting device simulator is for the function of current lifting device that is virtually reality like reality;

Described mutual-inductor tester simulator is for the function of mutual-inductor tester that is virtually reality like reality;

Described pressure regulator is connected with the power supply of mutual-inductor tester simulator by isolating transformer;

Controller is used for the signal message of the wiring situation that gathers each simulator, is uploaded to slave computer, and carries out the steering order that slave computer sends;

Slave computer is for uploading information, receive the parameter that host computer is set each simulator controller sending controling instruction information, reception controller, and carry out signal disposal and analysis, actual tests wiring situation in the time that arranging on voltage transformer (VT) interface, is shown in the examination of slave computer.

Further, described host computer homepage is provided with the function choice box of measuring current mutual inductor, the function choice box of test voltage mutual inductor, the function choice box of training current transformer, the function choice box of training voltage transformer (VT), the function choice box of examination current transformer, the function choice box of examination voltage transformer (VT); Wherein

The function choice box of measuring current mutual inductor, for allowing teacher's choice for use real current mutual inductor, current loading case, mutual-inductor tester realize the laboratory verification training on operation under real current;

The function choice box of test voltage mutual inductor, for allowing teacher's choice for use real voltage mutual inductor, voltage load box, mutual-inductor tester realize the laboratory verification training on operation under real voltage;

The function choice box of training current transformer, for allowing teacher that the parameter such as polarity, no-load voltage ratio, error of the current transformer simulator of each simulation calibrating device is set by host computer, host computer and projector equipment are used in conjunction with, and carry out giving lessons and training of mutual inductor and calibrating knowledge;

The function choice box of training voltage transformer (VT), for allowing teacher that the parameter such as polarity, no-load voltage ratio, error of the voltage transformer (VT) simulator of each simulation calibrating device is set by host computer, host computer and projector equipment are used in conjunction with, and carry out giving lessons and training of mutual inductor and calibrating knowledge;

The function choice box of examination current transformer, for allowing teacher that the parameter such as polarity, no-load voltage ratio, error of the current transformer simulator of student's machine can be set respectively by host computer;

The function choice box of examination voltage transformer (VT), for allowing teacher that the parameter such as polarity, no-load voltage ratio, error of the voltage transformer (VT) simulator of student's machine can be set respectively by host computer;

There are student's login feature choice box, training current transformer function choice box, training voltage transformer (VT) function choice box, examination current transformer function choice box, examination voltage transformer (VT) function choice box in described the next owner interface; Wherein

Student's login feature choice box, for student's personal training information inquiry, modification;

The function choice box of training current transformer, for allowing student carry out online exercise according to the various parameters of current transformer simulator of teacher's machine setting;

The function choice box of training voltage transformer (VT), for allowing student carry out online exercise according to the various parameters of voltage transformer (VT) simulator of teacher's machine setting;

The function choice box of examination current transformer, for allowing student under " examination " duty, carries out online testing according to the various parameters of current transformer simulator of teacher's machine setting;

The function choice box of examination voltage transformer (VT), for allowing student under " examination " duty, carries out online testing according to the various parameters of voltage transformer (VT) simulator of teacher's machine setting.

Further, described controller comprises a terminals driver output module, tail terminals Gather and input module, polarity and signal discrimination module, RS232 transceiver module, MCU module and power supply unit module; MCU module is connected with signal discrimination module is unidirectional with a terminals driver output module, tail terminals Gather and input module, polarity, is connected with RS232 transceiver module is two-way.Wherein,

Terminals driver output module, for receiving the drive control signal that MCU module is sent, applies low level to wiring the end of a thread to be judged;

The tail terminals Gather and input module line tail end signal scanning that is used for achieving a butt joint, inquiry judge the wiring level state of other wiring tail ends unexpectedly except band one by one;

Polarity and signal discrimination module are used for realizing the amplification of signal, and realize the analog to digital conversion of signal;

RS232 transceiver module for the signal of tail terminals Gather and input module is transferred to host computer or by the steering order communication of host computer to controller;

MCU module is used for control head terminals driver output module drive terminal stud to be judged, and constantly scans the logic level signal of tail terminals Gather and input module, judges the break-make relation of wiring between each simulation connection terminal;

Power supply unit module is used for to other each module for power supply.

Further, described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described polarity and signal discrimination module are made up of trsanscondutance amplifier and zero cross detection circuit; Described RS232 transceiver module SP3232 transceiver; Described MCU module adopts the MPC82G 516A singlechip chip of PQFP44 encapsulation.

Further, described student's facility have six.

Electric energy metrical mutual inductor detection simulation training as above and checking system, when teacher clicks after the function choice box of measuring current mutual inductor or the function choice box of test voltage mutual inductor of host computer, carry out the following step:

Step 1: host computer loads test setting current transformer interface or voltage current transformer interface, opens serial ports and is connected with actual tester, if success is carried out subsequent step, otherwise returned to host computer homepage;

Step 2: host computer creates data buffer; Serial ports creates to entrust and monitors, the data of the actual tester of real-time sense;

Step 3: in the time listening to data buffer and have data, receive data, carry out verification, data are directly abandoned in verification failure, and verification succeeds is storage data, reach and receive data object;

Step 4: decomposition data, obtain dial gauge, ratio, angular difference data, show in real time actual tester data.

Electric energy metrical mutual inductor detection simulation training as above and checking system, when teacher clicks after the function choice box of training current transformer or the function choice box of training voltage transformer (VT) of host computer, carry out the following step:

Step 1: host computer loading current transducer check wiring diagram interface or voltage transformer (VT) verification wiring diagram interface, utilize projector projection, student is imparted knowledge to students;

Step 2: current transformer interface is set in host computer loading training or training arranges voltage transformer (VT) interface, creates host computer multithreading Thread, data buffer maxPacket, NetworkStream stream, for long-range transmission data are prepared; As loaded, training arranges current transformer interface or training arranges the success of voltage transformer (VT) interface, carries out subsequent step, otherwise returns to host computer homepage;

Step 3: teacher in the current mutual-inductor parameter setting area of host computer or the current transformer of voltage transformer (VT) parameter setting area to each student's machine or the supplemental characteristic of voltage transformer (VT) arrange;

Step 4: open first serial when slave computer loading training current transformer interface or training arrange voltage transformer (VT) interface and be connected with actual tester, if success is carried out subsequent step, otherwise returned to slave computer homepage;

Step 5: first serial is entrusted and monitored, the data of the actual tester of real-time sense;

Step 6: slave computer is opened second serial and is connected with controller, if open just slave computer homepage immediately of failure, if opened successfully, carries out the following step;

Step 7: slave computer creates multithreading Thread, data buffer maxPacket, NetworkStream stream, for long-range reception data are prepared, creates second serial and entrusts monitoring, the data that real-time sense controller sends;

Step 8: host computer sends to each student's machine by supplemental characteristic by NetworkStream stream, the host computer multithreading Thread of establishment monitors data;

Step 9: slave computer receives and display parameter data supplemental characteristic with the multithreading Thread of its establishment, and in the time that teacher's machine sends data again, this multithreading Thread can monitor and again receive data in real time;

Step 10: slave computer training arranges the trust that current transformer interface or training arrange region, the viewing area second serial at voltage transformer (VT) interface and monitors the data that monitoring controller sends, int[in the time that data are different] number2=new int[48] reception data, and with the Split(of string) method decomposition data, by analyze data, with rule mode show in real time every single line that each simulator connects;

Step 11: when slave computer training arranges after all wiring successes of viewing area that current transformer interface or training arrange voltage transformer (VT) interface, slave computer is enabled multithreading Thread, sends the supplemental characteristic obtaining from host computer with NetworkStream stream;

Step: 12: student carries out verification to current transformer or voltage transformer (VT) circle, manual adjustments pressure regulator, the data that actual tester sends according to student's machine are carried out processes and displays, and send the detailed data of dial gauge every bit to student's machine;

Step 13: slave computer is enabled the trust of first serial and monitored, in the time listening to actual tester buffer zone and have data, slave computer receives data, carries out verification, and data are directly abandoned in verification failure, and verification succeeds is storage data, reaches and receives data object;

Step: 14: decomposition data, obtain dial gauge, ratio, angular difference data, reach and show actual tester data object.

Electric energy metrical mutual inductor detection simulation training as above and checking system, when teacher clicks after the function choice box of examination current transformer or the function choice box of examination voltage transformer (VT) of host computer, carry out the following step:

Step 1: host computer loads examination current transformer interface is set, and reads the slave computer of all logins simultaneously, flows for each student's machine creates interface and thread Thread, data buffer, a NetworkStream that current mutual-inductor parameter can be set;

Step 2: as loaded examination, current transformer interface success is set, the supplemental characteristic of teacher's current transformer to each slave computer in the current mutual-inductor parameter setting area of host computer arranges modification, otherwise returns to host computer homepage;

Step 3: slave computer loads examination current transformer interface is set, opens first serial simultaneously and is connected with actual detector, if success is carried out subsequent step, otherwise returned to slave computer homepage;

Step 4: first serial is entrusted and monitored, the data of the actual detector of real-time sense;

Step 5: slave computer is opened second serial and is connected with controller, if open just slave computer homepage immediately of failure, if opened successfully, carries out the following step;

Step 6: slave computer creates multithreading Thread, data buffer, NetworkStream stream, for long-range reception data are prepared, creates second serial and entrusts monitoring, the data that real-time sense controller sends;

Step 7: host computer transmits Examination Rule to the slave computer of each login, and send the supplemental characteristic of no-load voltage ratio, polarity, load, grade, error amount to the slave computer that sets supplemental characteristic;

Step 8: slave computer receives supplemental characteristic, Examination Rule with the multithreading Thread of its establishment and shows Examination Rule, and no-load voltage ratio, load, three supplemental characteristics of grade, in the time that host computer sends data again, this multithreading Thread can monitor and again receive data in real time; Meanwhile, slave computer receives and shows with the Examination Rule that multithreading Thread sends host computer, and in the time that host computer sends data again, multithreading Thread can monitor and again receive Examination Rule in real time;

Step 9: slave computer examination arranges the trust of region, the viewing area second serial at current transformer interface and monitors the data that monitoring controller sends, int[in the time that data are different] number2=new int[48] reception data, and with the Split(of string) method decomposition data, can intelligentizedly show in real time in time every single line that student connects by the mode of analyzing data line, and can judge mistake;

Step 10: when the program of slave computer judges after all wiring successes, enable Thread, flow and send the no-load voltage ratio, polarity, the data that obtain from host computer by array to actual detector with NetworkStream, as long as the wiring error of existence, can not send data to actual tester, actual tester, all the time in zero condition, data not show;

Step 11: actual detector receives after data, student could carry out verification to current transformer and occur data, manual adjustments pressure regulator, the data that actual detector sends according to slave computer are carried out processes and displays, and send the detailed data of dial gauge every bit to slave computer;

Step 12: slave computer is enabled the trust of first serial and monitored, and in the time listening to actual detector buffer zone and have data, slave computer receives data by array, then carry out verification, data are directly abandoned in verification failure, and verification succeeds array storage data reaches and receives data object;

Step: 13: decomposition data, obtain dial gauge, ratio, angular difference data, reach and show actual detector data object.

Beneficial effect of the present invention is:

The present invention adopts Computer real time simulation, simulate to greatest extent the work on the spot environment that electric energy metrical mutual inductor detects, provide at equipment appearance, the standard potential transformer simulator of function complete simulation material object, standard current transformer simulator, tested voltage transformer (VT) simulator, tested current transformer simulator, stepup transformer simulator, current lifting device simulator, mutual-inductor tester simulator, voltage load box simulator, current loading case simulator, the operating voltage of whole system and electric current are far smaller than the voltage and current of true environment, can realize at trouble free service voltage, under electric current for student provides the training of the electric energy metrical mutual inductor reliable safety guarantee of taking an examination.

Controller of the present invention meets the technical requirement of electric energy metrical mutual inductor device calibrating wiring simulation system or other similar simulation training systems completely, can realize all electronic, judge in real time, exactly the on off operating mode of simulation connection, and in time, constantly result data is uploaded to host computer and does wiring misinterpretation etc. is further processed.

Host computer can carry out test connection judgement to the simulation connection terminal of each simulator, and actual tests wiring situation can be shown on computers, excite to greatest extent comprehension and the actual operational capacity of student to work on the spot, improve rapidly student's operative skill, there is stronger production practical significance.

accompanying drawing explanation:

Fig. 1 is principle of the invention block diagram.

Fig. 2 is the theory diagram of student's machine.

Fig. 3 is the theory diagram of standard potential transformer simulator.

Fig. 4 is the theory diagram of tested voltage transformer (VT) simulator.

Fig. 5 is the theory diagram of voltage load box simulator.

Fig. 6 is the theory diagram of stepup transformer simulator.

Fig. 7 is the theory diagram of standard current transformer simulator.

Fig. 8 is the theory diagram of tested current transformer simulator.

Fig. 9 is the theory diagram of current loading case simulator.

Figure 10 is the theory diagram of current lifting device simulator.

Figure 11 is the theory diagram of mutual-inductor tester simulator.

Figure 12 is controller principle module map.

Figure 13 is the software principle block diagram of controller.

embodiment:

As shown in Figure 1, system global structure of the present invention is made up of 1 cover teacher machine, 6 cover student machines, ethernet network communication equipment, and wherein teacher's machine is the Control on Communication main frame of whole system, simultaneously also as the actual detection platform of laboratory verification mutual inductor; Student's machine is exactly the mutual inductor simulation calibrating device at function complete simulation scene.

(1) teacher's machine:

Projector equipment, electric energy metrical mutual inductor detection entity platform that teacher's machine comprises host computer, is connected with host computer; The communication of described upper machine-processed whole system, realizes the functions such as student's machine parameter issues, the teaching of mutual inductor rudimentary knowledge, detects entity platform simultaneously carry out the transformer error verification of entity in conjunction with electric energy metrical mutual inductor.Therefore, teacher's machine is the Control on Communication main frame of whole system, simultaneously, as the actual detection platform of laboratory verification mutual inductor, complete practical operation training, the explanation of mutual inductor knowledge teaching, carry out the operation control, data communication, examination marking of simulation operation training etc.

Described electric energy metrical mutual inductor detects entity platform and comprises actual current lifting device, actual standard voltage transformer (VT), actual tested voltage transformer (VT), actual current Burden box, actual stepup transformer, actual standard voltage transformer (VT), actual tested voltage transformer (VT), actual current Burden box, actual tester, actual pressure regulator.

The host computer of teacher's machine is as system principal computer, a network system of sub-computing machine composition with each simulation calibrating device, principal computer can be had access to the demonstration operating mode of sub-computing machine in real time, under " examination " duty, can the parameters such as the polarity, no-load voltage ratio, error of electric current (or voltage) the mutual inductor simulator of each student's machine can be set respectively by host computer.Under " training " state, principal computer and special the giving lessons of projector equipment cover teacher are commented on system, can carry out giving lessons and training of mutual inductor and calibrating knowledge.Under " test " duty, teacher's machine control desk PC utilizes the internal error checking routine carrying, the actual monitor station of teacher's machine uses real current mutual inductor, voltage transformer (VT), current loading case, voltage load box, mutual-inductor tester, Regulation Control case, transformer error test board etc., realizes in real current, voltage transformer (VT) laboratory actual error calibrating training on operation.

Teacher's machine computer control system, has the parameter functions such as the tested mutual inductor ratio of different slave computers, polarity, error, load are set, and realizes analog current, the setting of voltage transformer (VT) laboratory verification training on operation parameter.Send to every student's machine by procotol.

Described host computer homepage is provided with the function choice box of measuring current mutual inductor, the function choice box of test voltage mutual inductor, the function choice box of training current transformer, the function choice box of training voltage transformer (VT), the function choice box of examination current transformer, the function choice box of examination voltage transformer (VT); Wherein

The function choice box of examination voltage transformer (VT), for allowing teacher that the parameter such as polarity, no-load voltage ratio, error of the voltage transformer (VT) simulator of student's machine can be set respectively by host computer.

(2) ethernet network device

Described ethernet network device is realized the slave computer of each student's machine and communicating by letter of teacher's machine.Host computer and a network system of 6 slave computer compositions, host computer can be had access to the demonstration operating mode of slave computer in real time, under " training " state, host computer and special the giving lessons of projector equipment composition teacher are commented on system, can carry out giving lessons and training of mutual inductor and calibrating knowledge.

(3) student's machine

As shown in Figure 2, be the theory diagram of student's machine.Described student's machine comprises that a computing machine (slave computer), controller and electric energy metrical mutual inductor detect anti-true platform, and described electric energy metrical mutual inductor detection simulation platform comprises pressure regulator, standard potential transformer simulator, standard current transformer simulator, tested voltage transformer (VT) simulator, tested current transformer simulator, stepup transformer simulator, current lifting device simulator, mutual-inductor tester simulator, voltage load box simulator, current loading case simulator.

Be illustrated in figure 2 the theory diagram of student's machine: slave computer is connected by RS232 serial ports with controller, standard potential transformer simulator, tested voltage transformer (VT) simulator, mutual-inductor tester simulator, voltage load box simulator are all connected with controller.

Below each simulator is described in detail respectively.

Describe in detail respectively below.

1. standard potential transformer simulator

As shown in Figure 3, standard potential transformer simulator comprises housing, is positioned at the voltage transformer (VT) of housing, is positioned at the some simulation connection terminals outside housing.

Describe in detail respectively below.

A. voltage transformer (VT)

The described voltage transformer (VT) that is positioned at housing is made up of winding, Secondary Winding, iron core and an insulation of mutually insulated.Its principle of work is substantially identical with transformer, when apply a voltage U 1 on a winding time, just produces a magnetic flux φ in iron core, according to the law of electromagnetic induction, in Secondary Winding, just produces a secondary voltage U2.Change once or the number of turn of Secondary Winding, can produce different primary voltages and secondary voltage ratio, this just can form not voltage transformer (VT) on year-on-year basis.Voltage transformer (VT) converts high voltage to low-voltage, i.e. 100V in proportion.

B. simulation connection terminal

Simulation connection part is arranged on housing appearance.As shown in fig. 1: simulator primary line input terminal is masked as A, X ground; Secondary line input terminal is masked as 35KV/100V, 10KV/100V, x, and described five input terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of these five wiring.The head end of 5 wiring is respectively: 1a, and 2a ... .5a.The tail end of 5 wiring is respectively: 1b, 2b ... 5b.Namely, host computer by controller to identify timely and accurately each end number and other 4 ends number relation (conducting or disconnection).Know method for distinguishing and adopt the integrated scan-type algorithm of controller MCU.

It should be noted that, it is 35KV/100V, 10KV/100V that the present invention can realize simulation no-load voltage ratio value.0.05 grade of simulation grade, overload capacity 120%.

Host computer sets and becomes simulation no-load voltage ratio value, polarity, rated power factor, nominal load, rated frequency, accuracy grade.Under the condition of equipment appearance, function complete simulation, make wiring voltage become very low (generally only having 10V left and right).

2. tested voltage transformer (VT) simulator

As shown in Figure 4, tested voltage transformer (VT) Simulator design principle is the same with standard potential transformer simulator, and just input terminal has some difference, and primary line input terminal is masked as A, X; Secondary line input terminal is masked as 100V, x.

3. voltage load box simulator

As shown in Figure 5, voltage load box simulator comprises housing, is positioned at the some simulation connection terminals outside housing.

Simulation connection terminal is arranged on housing appearance, and power factor is 0.8 o'clock, fictitious load regulation stall 2.5VA, 5VA, 10VA, 20VA, 40VA respectively, and described 5 input terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of these five wiring.The head end of 5 wiring is respectively: 1a, and 2a ... .5a.The tail end of 6 wiring is respectively: 1b, 2b ... 5b.Namely, host computer by controller to identify timely and accurately each end number and other 4 ends number relation (conducting or disconnection).Know method for distinguishing and adopt the integrated scan-type algorithm of controller MCU.

Described voltage load box simulator makes wiring voltage become very low (generally only having 10V left and right), can simulate overload capacity 120%, rated voltage: 100V, power factor is 0.8, simulator has communication import, can be online by controller and host computer, can load gear be set by host computer.

Reality simulation voltage load box outward appearance, voltage load box simulator outward appearance and real voltage load box outward appearance are in full accord, and wherein the binding post on voltage load box simulator panel is also the same with real voltage load box.Reach the effect consistent with on-the-spot test environment.

4. stepup transformer simulator

As shown in Figure 6, stepup transformer simulator comprises housing, is positioned at the some simulation connection terminals outside housing.

Simulation connection terminal has 4, and two primary line input terminals are masked as 50KV, X ground; Secondary line input terminal be masked as 220V, ±, described 4 input terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of these 5 wiring.The head end of 5 wiring is respectively: 1a, and 2a ... .4a.The tail end of 5 wiring is respectively: 1b, 2b ... 4b.Namely, host computer by controller to identify timely and accurately each end number and other 3 ends number relation (conducting or disconnection).Know method for distinguishing and adopt scan-type.

Described stepup transformer simulator, under the condition of equipment appearance, function complete simulation, makes wiring voltage become very low (generally only have about 10V), can realize the training examination for student's stepup transformer under trouble free service voltage reliable safety guarantee is provided.Up voltage 0 ~ 50KV of simulation of stepup transformer simulator, simulation overload capacity 120%.

Reality simulation stepup transformer outward appearance, stepup transformer simulator outward appearance is in full accord with true stepup transformer outward appearance, and wherein the binding post on stepup transformer simulator panel is also the same with true stepup transformer.Reach the effect consistent with on-the-spot test environment.

Simulator has communication interface, can be online with host computer, can no-load voltage ratio and polarity, boost value be set by host computer.

5. standard current transformer simulator

As shown in Figure 7, standard current transformer simulator comprises housing, is positioned at the current transformer of housing, is positioned at the some simulation connection terminals outside housing.

Describe in detail respectively below.

A. current transformer

As shown in Figure 7, the current transformer that is positioned at housing described in is made up of winding, Secondary Winding, iron core and a framework, the connection terminal etc. of mutually insulated.Its principle of work is substantially identical with transformer, and the number of turn (N1) of a winding is less, is directly series in power circuit a load current (I ₁) when the winding, the alternating flux induction of generation produces the secondary current (I reducing in proportion ₂); The number of turn (the N of Secondary Winding ₂) more, connect and form closed-loop path with the secondary load (Z) of the current coil such as instrument, relay, transmitter, winding has with Secondary Winding the ampere-turn equating due to one time, I ₁n ₁=I ₂n ₂, in current transformer rated transformation ratio current transformer actual motion, load impedance is very little, and Secondary Winding, close to short-circuit condition, is equivalent to the transformer of a short circuit operation.

Described mutual inductor can use straight-through current transformer, and itself structure is not established winding one time, and current-carrying (load current) wire is by L ₁to L ₂play a winding effect through rolled circle (or other shapes) iron core rolling into by siliconized plate.Be wrapped on circular iron core Secondary Winding Direct Uniform, connect and form closed-loop path with the secondary load of the current coil such as instrument, relay, transmitter, because straight-through current transformer is not established winding one time, its no-load voltage ratio is determined through the number of turn in mutual inductor iron core according to a winding, the punching number of turn is more, and no-load voltage ratio is less; Otherwise the punching number of turn is fewer, no-load voltage ratio is larger.

By this Current Transformer Secondary current/voltage of sampling, thereby calculate polarity positive and negative of its primary line passing.

The primary line input terminal of current transformer is L1, L2, and secondary line input terminal is K1, K2.Extraneous power supply accesses to secondary line input terminal K1, the K2 of current transformer after isolating transformer.

B. simulation connection terminal

Simulation connection part is arranged on housing appearance.As shown in Figure 7: simulator primary line input terminal is masked as L1, L2, L3; Secondary line input terminal is masked as K1, K2, K3, and described six simulation terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of L1, L2, L3, K1, this six roots of sensation wiring of K2, K3.The head end of 6 wiring is respectively: 1a, and 2a ... .5a, 6a.The tail end of 6 wiring is respectively: 1b, 2b ... 5b, 6b.Namely, host computer by controller to identify timely and accurately each end number and other 5 ends number relation (conducting or disconnection).Know method for distinguishing and adopt scan-type.

It should be noted that, it is 100/5A, 1000/5A that standard current transformer simulator can be realized simulation no-load voltage ratio value.

6. tested current transformer simulator

As shown in Figure 8, tested current transformer Simulator design principle is the same with standard current transformer simulator, and just input terminal has some difference, and primary line input terminal is masked as L1, L2; Secondary line input terminal is masked as K1, K2.

7. current loading case simulator

As shown in Figure 9, current loading case simulator comprises housing, is positioned at the some simulation connection terminals outside housing.

Simulation connection terminal is arranged on housing appearance, and power factor is 0.8 o'clock, fictitious load regulation stall 2.5VA, 3.75VA, 5VA, 10VA, 15VA, 20VA respectively, and described 6 input terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of these five wiring.The head end of 6 wiring is respectively: 1a, and 2a ... .5a, 6a.The tail end of 6 wiring is respectively: 1b, 2b ... 5b, 6b.Namely, host computer by controller to identify timely and accurately each end number and other 5 ends number relation (conducting or disconnection).Know method for distinguishing and adopt the integrated scan-type algorithm of controller MCU.

Described current loading case simulator makes wiring voltage become very low (generally only having 10V left and right), can simulate overload capacity 120%, rated current: 5A, power factor is 0.8, simulator has communication import, can be online by controller and host computer, can load gear be set by host computer.

Reality simulation current loading case outward appearance, current loading case simulator outward appearance and real current load box outward appearance are in full accord, and wherein the binding post on current loading case simulator panel is also the same with real current load box.Reach the effect consistent with on-the-spot test environment.

8. current lifting device simulator

As shown in figure 10, current lifting device simulator comprises housing, is positioned at the some simulation connection terminals outside housing.

Simulation connection terminal has 5, two input terminals be masked as 220V, ±; Three lead-out terminals are masked as 0,5V/100A, 5V/100A, and described 5 input terminals are directly connected with the mainboard of controller.As required, controller can be identified the state that interconnects of these 5 wiring.The head end of 5 wiring is respectively: 1a, and 2a ... .5a.The tail end of 5 wiring is respectively: 1b, 2b ... 5b.Namely, host computer by controller to identify timely and accurately each end number and other 4 ends number relation (conducting or disconnection).Know method for distinguishing and adopt scan-type.

Described current lifting device simulator, under the condition of equipment appearance, function complete simulation, makes wiring voltage become very low (generally only have about 10V), can realize the training examination for student's current lifting device under trouble free service voltage reliable safety guarantee is provided.Controller and host computer also can be realized simulation current lifting device punching function.The large electric current of simulation of current lifting device simulator has 0 ~ 2000A, 1000A and above punching one circle, the every circle of output 2V/.

9. mutual-inductor tester simulator

As shown in figure 11, described mutual-inductor tester simulator comprises housing, is positioned at the circuit board of housing, is positioned at the some simulation connection terminals outside housing.

A. circuit board

Can use existing mutual-inductor tester circuit board.When operating voltage (or electric current) loop of tester applies trial voltage (or electric current), when differential pressure (or poor stream) loop applies error voltage (or electric current), tester can obtain in-phase component and the quadrature component of differential pressure (or poor stream) phasor with respect to operating voltage (or electric current) phasor by electric-bridge circuit, electronic circuit or number peace circuit measuring, and voltage (or electric current) phasor that can obtain being compared by calculating and the amplitude of operating voltage (or electric current) phasor are than (ratio difference) and phase differential.If the leading operating voltage of the voltage being compared (or electric current) phasor (or electric current) phasor, phase differential, for just, lags behind as negative.The in-phase component of its phasor of mutual-inductor tester simulator and quadrature component, load value come from the value that host computer arranges.Percentage tabular value comes from the size of pressure regulator adjusting by mutual-inductor tester simulator value.

B. simulation connection part

Simulation connection part is arranged on housing appearance.As shown in fig. 1: operating voltage loop input terminal is masked as a, X; Working current loop input terminal is masked as To, Tx, and differential pressure input terminal is K, D; The head end of 6 wiring is respectively: 1a, and 2a ... .5a, 6a, tail end is respectively: 1b, 2b ... 5b, 6b.As required, computing machine can be identified the state that interconnects of a, X, To, Tx, K, the wiring of the D six roots of sensation by controller.Be computing machine to identify timely and accurately each end number and other 5 ends number relation (conducting or disconnection).Controller adopts scan-type, and pair of wire connection terminals scans one by one.First from 1a, recognize one by one 6a.According to communication protocol, controller is constantly uploaded to computing machine by result by RS232 interface, and the wiring point test connections such as its To, Tx, D, K, a, X show on computers to wrong information.

Mutual-inductor tester simulator is the important composition equipment of system, there is outward appearance, binding post, panel of entity mutual-inductor tester etc., from sense organ, be as good as the intelligent instrument of the analogue simulation such as can realize electric current, TV transformer polarity mistake, wiring error, no-load voltage ratio mistake, error is overproof, variation is overproof with actual mutual-inductor tester.Formed by Aluminum Alloy Chassis, circuit board, power supply, communication serial port and binding post.Its peripheral coupling part is become and is formed by computing machine, controller, pressure regulator, isolation.220V external power source, after pressure regulator pressure regulation, then passes through isolating transformer, and mutual-inductor tester simulator interior power supply circuit input voltage becomes 30V.

Described mutual-inductor tester simulator is not to adopt ratio method to carry out true error verification, but adopt complete virtual mode on host computer, to carry out the error checking of mutual inductor, the simulation test functions such as the selection of range, the computing machine connecting by RS-232 serial communication interface according to the communication protocol of agreement, the in-phase component of its phasor and quadrature component, load value derives from the value that host computer arranges, percentage tabular value derives from by the value of mutual-inductor tester simulator after adjusting pressure regulator, its ratio, angular difference, error indicating value derives from host computer the data of assignment in advance.If the more than 5% of rated operational current or voltage, error exceedes 30% and while being less than 180%, mutual-inductor tester simulator warning no-load voltage ratio mistake; If the more than 5% of rated operational current or voltage, when error is greater than 180%, mutual-inductor tester simulator warning incorrect polarity, thereby whole simulation error checking procedure keeps synchronizeing with arranging of host computer, realize and under 30V low-voltage, carry out the training on operation of voltage transformer (VT) laboratory verification and examination, reach training, examination student's effect.

10. controller

Controller, under the management of embedded software, can be realized all electronic, the fast wiring situation of criterion voltage transformer (VT) simulation connection terminal, and can expand to the more interconnected relationship of multiple conducting wires, and constantly, in real time result is uploaded to host computer.

A. the hardware of controller is realized

Figure 12 shows that controller theory diagram.Controller is made up of a terminals driver output module, tail terminals Gather and input module, polarity and signal discrimination module, RS232 transceiver module, MCU module and power supply unit module, MCU module is connected with signal discrimination module is unidirectional with a terminals driver output module, tail terminals Gather and input module, polarity, is connected with RS232 transceiver module is two-way.Below each module is introduced:

Terminals driver output module: adopt 74HC374 or 8 latch integrated circuit.Receive the drive control signal that MCU module is sent, apply low level to wiring the end of a thread to be judged.

Tail terminals Gather and input module: adopt 75HC244 or 83 state door integrated circuit.The line tail end signal scanning that achieves a butt joint, inquiry judge the wiring level state of other wiring tail ends unexpectedly except band one by one.

Polarity and signal discrimination module: formed by trsanscondutance amplifier and zero cross detection circuit.The effect of trsanscondutance amplifier is that signal is fully amplified, and with the sensitivity that guarantees to detect, the effect of zero cross detection circuit is that sinusoidal wave simulating signal is become to digital signal, is convenient to MCU and processes.MCU obtains after these signals, according to certain algorithm, can judge polarity just with instead.

RS232 transceiver module: adopt SP3232 transceiver or similar integration module, the communication interface by RS232 standard by the continuous real-time Transmission of data gathering to host computer or by the steering order communication of host computer to controller.

MCU module: the MPC82G 516A singlechip chip that adopts PQFP44 encapsulation.The scanning sequence that MCU module is loaded according to single-chip microcomputer is by the logic level signal of continuous scanning collection terminals tail Gather and input module, judge the break-make relation of each lead wiring terminal, MCU module is also responsible for controlling terminal stud driver output module and is specifically driven which root terminal stud simultaneously.MPC82G516 A is the single-chip microprocessor of the efficient 1-T structure based on 80C51, and every instruction needs 1 ~ 7 clock signal (than fast 6 ~ 7 times of standard 8051), with 8051 instruction set compatibilities.Therefore in the case of having same processing power with standard 8051, MPC82G516A only needs low-down travelling speed, can reduce significantly thus power consumption simultaneously.

Power supply unit module: provide other each modules required working power.

B. the software of controller is realized

Figure 13 is the software principle block diagram of this controller.Mainly be divided into 3 steps: program timing scanning and initialization, wiring state Real-time Collection, data are uploaded in real time.

Described program timing Scan Architecture and initialization step are mainly realized the timing cycle scanning of program, be convenient to realize multiple task management and synchronize accurately, have guaranteed like this reliability of data acquisition, communication.

Wiring state Real-time Collection step mainly realizes the whole Real-time Collection process that scan-type drives terminal stud, gathers all conducting of terminals tail.

It is by application layer communications protocol that real time data is uploaded step, and the wiring situation that wiring state Real-time Collection functional module is collected is converted to the data of upper function identification, and sends to host computer.

C. controller wiring determination methods

Concrete grammar and the step of controller wiring judgement are as follows:

Step 1: after program scanning structure initialization, MCU module is sent drive control signal, produce the end of a thread end of a certain wire of logic low driving by a terminals driver module, present with low level to the end of a thread end of identification, and other the end of a thread ends are all presented with high level;

Step 2:MCU module adopts the mode of program scanning, scan period is less than 100ms, by tail terminals Gather and input module, inquire about one by one the level state of other wire tail ends, if the level measuring in terminal tails corresponding to tail terminals Gather and input module is low level, illustrate that this point is communicated with the end of a thread, if the level measuring is high level, illustrate that this point and the end of a thread disconnect, MCU module all gathers tail terminals Gather and input module terminals tail level state one time, judges like this break-make connection relationship that is driven wire and other wires;

Step 3: by this process circulation, the wiring head end that drives fast all the other analog conducting wires of terminals driver module scan-type, after the head end of whole lines is completed by driving one by one, MCU module just can collect the break-make situation of all conducting in real time, obtains the annexation between all conducting;

Step 4:MCU module is uploaded to host computer by RS232 transceiver module by the result of wire break-make annexation according to communication protocol after completing the collection of break-make situation of all conducting, the actual connection relationship comparison that host computer is sent here according to the break-make relation of standard and RS232 transceiver module again, carries out wiring relation to wrong judgement.So far, whole wiring deterministic process result.Send whole cycle of completing of data from collecting, be not more than 100ms, Real-time Collection the mutual annexation of all conducting.

Method of work under " test " to native system below, " training ", " examination " state is introduced.

" test " state.

Described host computer is provided with test setting voltage transformer (VT) or current transformer interface, and described interface is divided into supervision district, example district, voltage transformer (VT) or current transformer calibrator wiring diagram district;

Described supervision district for show actual tester sample the percentage tabular value that draws, than difference, angular difference value;

Described example district for by follow the sampling of actual tester draw reach rules requirement checkpoint percentage tabular value, show in real time than difference, angular difference value;

Described voltage transformer (VT) or current transformer calibrator wiring diagram district are for showing correct voltage transformer (VT) or current transformer verification wiring diagram.

When teacher clicks after the function choice box of measuring current mutual inductor or the function choice box of test voltage mutual inductor of host computer, carry out the following step:

Step 1: host computer loads test setting current transformer interface or voltage transformer (VT) interface, opens serial ports and is connected with actual tester, if success is carried out subsequent step, otherwise returned to host computer homepage;

Further, in step 3, host computer is taked odd even to the data that receive, and packet header 0x55, wraps big or small verification mode, verification succeeds array int[] number=new int[48] storage data.

Further, in step 4, host computer array int[] number decomposition data, obtain dial gauge, ratio, angular difference data.

Further, in step 4, utilize formula (number [5] * 127) * 65536+number [4] * 256+number [3]))/1000 decomposition dial gauge data.

Further, in step 4, utilize the TextChenged event of Text, the value of monitoring dial gauge, get when hour angle difference when dial gauge reaches when rules require actual checkpoint, compare difference, ratio, angular difference value are now out whole according to changing whole timelyization of stipulations, reach the actual checkpoint data of real-time demonstration object.

" training " state.

The page setup of host computer and slave computer:

Described host computer is provided with training voltage transformer (VT) or current transformer interface is set, and described interface is divided into voltage transformer (VT) or current mutual-inductor parameter setting area, voltage transformer (VT) or current transformer nameplate viewing area, voltage transformer (VT) or current transformer data area;

Described voltage transformer (VT) or current mutual-inductor parameter viewing area can arrange the voltage transformer (VT) of each student's machine or the supplemental characteristic of current transformer, and described parameter comprises no-load voltage ratio, polarity, load, grade, error;

Described voltage transformer (VT) or current transformer nameplate viewing area, for showing in real time the setting value of parameters;

Voltage transformer (VT) or current transformer data area show fully loaded and underloading data in time in real time according to the setting value of parameters;

Described host computer is also provided with voltage transformer (VT) or current transformer verification wiring diagram interface;

Described slave computer is provided with training voltage transformer (VT) or current transformer interface is set, and described interface is divided into voltage transformer (VT) or current transformer connection graph region, monitors area, voltage transformer (VT) or current transformer nameplate region;

Described voltage transformer (VT) or current transformer connection graph region show voltage transformer (VT) or the not wired wiring diagram of current transformer, and connection layout after wiring, in the time that student's wiring is correct, represent with black line, when wiring error, represent with red line;

Described supervision area is followed the sample percentage tabular value, the ratio part that draw of actual tester and is followed the sample ratio difference, the angular difference part that draw of actual tester and follow the actual tester angular difference value drawing of sampling for showing dial gauge part;

Described voltage transformer (VT) or current transformer nameplate viewing area show the data value of no-load voltage ratio that teacher arranges, load, grade.

When teacher clicks after the function choice box of training current transformer or the function choice box of training voltage transformer (VT) of host computer, carry out the following step:

Preferably, in step 13, slave computer is taked odd even to the data that receive, and packet header 0x55, wraps big or small verification mode, verification succeeds array int[] number=new int[48] storage data.

Preferably, in step 9, described slave computer shows the data of no-load voltage ratio, load, three parameters of grade.

Preferably, in step 3, after all supplemental characteristics are all set, the data after the current transformer data area display setting at the loading training current transformer interface of host computer, otherwise do not show.

Preferably, in the time that slave computer listens to data buffer maxPacket and changes, slave computer receives data again, storage data, and decomposition data, upgrades dial gauge, angular difference, than difference data, reaches the dial gauge that upgrades in time in real time, angular difference, than difference data object.

Preferably, slave computer training arranges in the region, viewing area at current transformer interface, when each simulator wiring is correct, represents with black line, when wiring error, represents with red line.

" examination " state.

Described host computer is provided with examination voltage transformer (VT) or current transformer interface is set, and voltage transformer (VT) is set in described examination or current transformer interface is divided into voltage transformer (VT) or current mutual-inductor parameter setting area, voltage transformer (VT) or current transformer nameplate viewing area, voltage transformer (VT) or current transformer data area;

Described slave computer is provided with examination voltage transformer (VT) or current transformer interface is set, and described interface is divided into Examination Rule viewing area, monitors area, voltage transformer (VT) or current transformer nameplate region;

Described Examination Rule viewing area shows the Examination Rule that teacher's machine arranges and pass down;

When teacher clicks after the function choice box of examination current transformer or the function choice box of examination voltage transformer (VT) of host computer, carry out the following step:

Further, in step 12, slave computer is taked odd even to the data that receive, and packet header 0x55, wraps big or small verification mode, verification succeeds array int[] number=new int[48] storage data.

Further, in step 1, the no-load voltage ratio on each slave computer interface, polarity, load, grade, these five of error amounts all obtain at random with Random.

Further, in step 7, teacher's machine is all modified five supplemental characteristics after setting, the corresponding slave computer that host computer could send.

Further, in the time that slave computer listens to data buffer maxPacket and changes, slave computer receives data again, storage data, and decomposition data, upgrades dial gauge, angular difference, than difference data, reaches the dial gauge that upgrades in time in real time, angular difference, than difference data object.

Further, slave computer examination arranges in the region, viewing area at current transformer interface, when each simulator wiring is correct, represents with black line, when wiring error, represents with red line.

Beneficial effect of the present invention is:

Controller of the present invention meets the technical requirement of electric energy metrical mutual inductor simulation system or other similar simulation training systems completely, can realize all electronic, judge in real time, exactly the on off operating mode of simulation connection, and in time, constantly result data is uploaded to host computer and does wiring misinterpretation etc. is further processed.

Host computer can carry out test connection judgement to the simulation connection connection terminal of each simulator, and actual tests wiring situation can be shown on computers, excite to greatest extent comprehension and the actual operational capacity of student to work on the spot, improve rapidly student's operative skill, there is stronger production practical significance.

Claims

1. the training of electric energy metrical mutual inductor detection simulation and a checking system, is characterized in that, the student's machine that comprises teacher's machine, the communication connection of some and teacher's machine; Wherein,

2. an electric energy metrical mutual inductor detection simulation training and checking system, it is characterized in that, described host computer homepage is provided with the function choice box of measuring current mutual inductor, the function choice box of test voltage mutual inductor, the function choice box of training current transformer, the function choice box of training voltage transformer (VT), the function choice box of examination current transformer, the function choice box of examination voltage transformer (VT); Wherein

3. electric energy metrical mutual inductor detection simulation training as claimed in claim 1 or 2 and checking system, it is characterized in that, described controller comprises a terminals driver output module, tail terminals Gather and input module, polarity and signal discrimination module, RS232 transceiver module, MCU module and power supply unit module; MCU module is connected with signal discrimination module is unidirectional with a terminals driver output module, tail terminals Gather and input module, polarity, is connected with RS232 transceiver module is two-way.Wherein,

Power supply unit module is used for to other each module for power supply.

4. electric energy metrical mutual inductor detection simulation training as claimed in claim 3 and checking system, is characterized in that, described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described polarity and signal discrimination module are made up of trsanscondutance amplifier and zero cross detection circuit; Described RS232 transceiver module SP3232 transceiver; Described MCU module adopts the MPC82G 516A singlechip chip of PQFP44 encapsulation.

5. electric energy metrical mutual inductor detection simulation training as claimed in claim 1 and checking system, is characterized in that, described student's facility have six.

6. electric energy metrical mutual inductor detection simulation training as claimed in claim 3 and checking system, is characterized in that, described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described terminals driver output module adopts 74HC374 or 8 latch integrated circuit; Described polarity and signal discrimination module are made up of trsanscondutance amplifier and zero cross detection circuit; Described RS232 transceiver module SP3232 transceiver; Described MCU module adopts the MPC82G 516A singlechip chip of PQFP44 encapsulation.

7. electric energy metrical mutual inductor detection simulation training as claimed in claim 3 and checking system, is characterized in that, when teacher clicks after the function choice box of measuring current mutual inductor or the function choice box of test voltage mutual inductor of host computer, carries out the following step:

8. electric energy metrical mutual inductor detection simulation training as claimed in claim 3 and checking system, is characterized in that, when teacher clicks after the function choice box of training current transformer or the function choice box of training voltage transformer (VT) of host computer, carries out the following step:

9. electric energy metrical mutual inductor detection simulation training as claimed in claim 3 and checking system, is characterized in that, when teacher clicks after the function choice box of examination current transformer or the function choice box of examination voltage transformer (VT) of host computer, carries out the following step: