CN104361802A - Electrical operation simulation device for capacitive equipment - Google Patents
Electrical operation simulation device for capacitive equipment Download PDFInfo
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- CN104361802A CN104361802A CN201410720995.9A CN201410720995A CN104361802A CN 104361802 A CN104361802 A CN 104361802A CN 201410720995 A CN201410720995 A CN 201410720995A CN 104361802 A CN104361802 A CN 104361802A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
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- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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Abstract
The embodiment of the invention provides an electrical operation simulation device for capacitive equipment. The electrical operation simulation device comprises a power supply terminal, a three-phase signal generator, a power amplifier, transformers, a capacitive load, current output terminals and voltage output terminals, wherein the power supply terminal is respectively connected with the three-phase signal generator and the power amplifier; the three-phase signal generator comprises three signal output terminals; each signal output terminal is connected with one current output terminal through the power amplifier, the transformer and the capacitive load; and each transformer is connected with one voltage output terminal.
Description
Technical field
The present invention relates to charged electric power apparatus and detect skills training teaching field, particularly relate to a kind of capacitive apparatus electrical operation analogue means.
Background technology
Along with technical progress and electrical network fast development, the existing interruption maintenance pattern based on the cycle can not meet current power network development requirement, and charged electric power apparatus detection technique can realize defeated, change, controller switching equipment condition diagnosing in operating conditions, the accurate location of rejected region, the quantitative test of defect level, to avoiding equipment breakdown, there is important value, effectively can solve after equipment component runs and there is no means of testing and go wrong there is no a difficult problem for counter-measure, be conducive to the reliability index of raising equipment, be conducive to carrying out equipment state evaluation and repair based on condition of component.
Capacitive apparatus owing to occupying very large proportion (being generally 40% ~ 50%) in substation equipment, thus how exact specification completes seems very important to its live detection work, can whether this type of be apparatus insulated normal because this is diagnosis, continue the key keeping safe and stable operation.For the technical key point making system one line operating maintenance personnel grasp capacitive apparatus live detection, need the skills training it being carried out to theory and practice operation, to improve personnel specialty technical ability.The operative skill training of capacitive apparatus live detection, by certain object in kind, to reach good result of training, need can take following two kinds of modes: one, in transformer station, carry out the training of live detection operative skill to capacitive apparatus in operation; Two, additional test power device, capacitive apparatus material object is adopted to set up set of system to simulate the actual electric network operational mode of capacitive apparatus.
Mode one needs to carry out in transformer station, student needs to enter in transformer station and carries out operative skill rehearsal, and transformer station belongs to electrical network production line, and student enters in transformer station and carries out operative skill rehearsal, very large hidden danger is existed to circuit, equipment and personal safety, both dangerous unactual yet; There is particular/special requirement mode two pairs of test sites, need carry out in specific test site, and when actual training is carried out, in order to reappear the electric operating mode of capacitive apparatus under grid operating conditions, need to apply high voltage by additional power source in kind in capacitive apparatus, and the student that undergoes training is more, also the larger person and device security hidden danger can be brought to training.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of capacitive apparatus electrical operation analogue means, in transformer station, the training of live detection operative skill is carried out to capacitive apparatus in operation to solve in prior art, or the problem of the potential safety hazard brought to the person and equipment when adopting additional test power device, capacitive apparatus material object to set up set of system to simulate the actual electric network operational mode of capacitive apparatus.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A kind of capacitive apparatus electrical operation analogue means, comprising: power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end, wherein,
Described power end is connected with power amplifier with three-phase signal generator respectively, described three-phase signal generator comprises three signal output parts, each signal output part is all connected with a current output terminal by power amplifier, transformer and capacitive load, and each transformer is all connected with a voltage output end.
Wherein, described analogue means also comprises: casing,
For holding power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end.
Wherein, described power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end are positioned at the surface of described casing.
Wherein, described analogue means also comprises: panel,
Described panel comprises voltage and obtains region and electric current acquisition region, and described voltage obtains region and comprises voltage terminal, and for obtaining voltage output end voltage signal, described electric current obtains region and comprises current terminal, for obtaining current output terminal current signal.
Wherein, described voltage terminal comprises the first voltage terminal and the second voltage terminal, and each first voltage terminal is connected with a voltage output end, and the voltage output end voltage signal of acquisition is the voltage signal between the first voltage terminal and the second voltage terminal.
Wherein, described current terminal comprises current terminal and lower current terminal, and each upper current terminal is connected with a current output terminal, obtains current output terminal current signal by upper current terminal and its corresponding lower current terminal short circuit.
Wherein, described panel also comprises: power supply area, and described power supply area comprises alternating current input socket and voltage switch, after described voltage switch is closed, provides alternating current by described alternating current input socket to power end.
Wherein, described analogue means also comprises: earth terminal;
Wherein, described panel also comprises: ground terminal, is connected with described earth terminal, for making earth terminal ground connection by ground wire.
Wherein, described three-phase signal generator comprises: signal generator and phase-shift circuit, wherein,
Described signal generator, for generation of signal;
Described phase-shift circuit, for being divided into by described signal phase differential to be 120 Du tri-road signals, generates three-phase signal.
Wherein, described analogue means also comprises auxiliary switching power supply, and described auxiliary switching power supply one end is connected with power end, and the other end is connected with power amplifier with three-phase signal generator respectively.
Based on technique scheme, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, comprise power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end, wherein, power end is connected with power amplifier with three-phase signal generator respectively, power to three-phase signal generator and power amplifier, three-phase signal generator has three signal output parts, each signal output part exports a road three-phase signal, each signal output part all passes through power amplifier, transformer is connected with a current output terminal with capacitive load, each transformer is all connected with a voltage output end, required voltage signal and current signal under generation capacitive apparatus absolute method live detection environment, simulate the operation of power networks mode of operation of capacitive apparatus, very applicable skills training class uses, can student be made well to understand and grasp this type of electrical equipment based on the principle of absolute method live detection and operative skill, efficiently, while easy, there is higher security.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The system chart of the analogue means of the capacitive apparatus electrical operation that Fig. 1 provides for the embodiment of the present invention;
The structural representation of panel in the capacitive apparatus electrical operation analogue means that Fig. 2 provides for the embodiment of the present invention;
The structured flowchart of three-phase signal generator in the capacitive apparatus electrical operation analogue means that Fig. 3 provides for the embodiment of the present invention;
Another system chart of the capacitive apparatus electrical operation analogue means that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The system chart of the analogue means of the capacitive apparatus electrical operation that Fig. 1 provides for the embodiment of the present invention, by required voltage signal and current signal under this analogue means generation capacitive apparatus absolute method live detection environment, simulate operation of power networks mode of operation and its absolute method live detection process of capacitive apparatus, very applicable skills training class uses, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment live detection, efficiently, while easy, there is higher security, with reference to Fig. 1, this capacitive apparatus electrical operation analogue means can comprise: power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700, wherein,
Power end 100 is connected with power amplifier 300 with three-phase signal generator 200 respectively, be connected with power amplifier 300 with three-phase signal generator 200 respectively by power end 100, the power supply signal inputted from power end 100 can be powered to three-phase signal generator 200 and power amplifier 300 respectively.
Optionally, power end 100 can input voltage be the electric main of 220 volts.
Three-phase signal generator 200 comprises three signal output parts, each signal output part will export the three-phase signal on a road, the signal that the signal output part of three-phase signal generator 200 can be claimed to export is respectively A phase signals, B phase signals and C phase signals, wherein, A phase signals, B phase signals and C phase signals have identical amplitude and frequency, and A phase signals, B phase signals and C phase signals phase differential are between any two 120 degree.
Each signal output part of three-phase signal generator 200 is all connected with a current output terminal 600 by power amplifier 300, transformer 400 and capacitive load 500.
Concrete, the A phase signals that three-phase signal generator 200 generates is by power amplifier 300, export from a current output terminal 600 after transformer 400 and capacitive load 500, B phase signals is by power amplifier 300, export from a current output terminal 600 after transformer 400 and capacitive load 500, and C phase signals is by power amplifier 300, export from a current output terminal 600 after transformer 400 and capacitive load 500, the current output terminal 600 exporting A phase signals can be claimed to be the first current output terminal, the current output terminal 600 exporting B phase signals is the second current output terminal, the current output terminal 600 exporting C phase signals is the 3rd current output terminal.
Wherein, power amplifier 300 carries out power amplification for the three-phase signal generated by three-phase signal generator 200 in capacitive apparatus electrical operation analogue means, small area analysis signal source is enlarged into power current source, then the three-phase signal that power is exaggerated is exported, improve the carrying load ability of output.
Optionally, power amplifier 300 can adopt DTA2030A integrated circuit, the audio power amplifying circuit that DTA2030A integrated circuit is produced based on telephone set, adopt V-type 5 pin single in-line plastic capsulation structure, be widely used in, in the equipment such as car stereo radio-tape recorder, middle power sound equipment, there is the features such as volume is little, output power is large, distortion is little; Meanwhile, in DTA2030A integrated circuit, also there is internal protection circuitry, the use safety of analogue means can be protected.
Wherein, transformer 400 amplifies for the voltage of the three-phase signal by reception, because the restriction of supply voltage, the signal that transformer 400 receives is the highest can only for the alternating voltage of ± 12 volts, and by the actual output voltage value of simulation capacitive apparatus far away higher than ± 12 volts, if do not carry out transformation by transformer 400, then the last voltage exported from voltage output end 700 the highlyest can only will be ± 12 volts, do not reach by the actual output voltage value of the voltage transformer (VT) of simulating far away, therefore, can export one to make capacitive apparatus electrical operation analogue means reaches by the actual output voltage value of the voltage transformer (VT) of simulating, transformer 400 is configured in capacitive apparatus electrical operation analogue means, by regulating the no-load voltage ratio factor of transformer 400, increase the magnitude of voltage of output signal, make transformer 400 can output voltage values and the signal matched by the actual output voltage value of voltage transformer (VT) simulated, even if capacitive apparatus electrical operation mould output matching voltage.
Transformer 400 is except the voltage of the three-phase signal by reception amplifies, also there is the function of isolation, namely by transformer 400, the impedance that capacitive apparatus electrical operation analogue means can be made to export matches with by the internal output impedance of capacitive apparatus of simulating, and makes the three-phase signal of output and power end 100 carry out electrical isolation.
Wherein, capacitive load 500 refers to the load with capacitance parameter, and each load meeting voltage delay current characteristics all can be described as capacitive load.
Optionally, capacitive load 500 can be that electric capacity and resistant series are formed.Optionally, in capacitive load 500, the electric capacity of series connection is bulky capacitor, and the resistance of series connection is small resistor in capacitive load 500, wherein, bulky capacitor refers to that electric capacity is greater than the electric capacity of a predetermined threshold, the value that this predetermined threshold neither one is fixing, in different capacitive apparatus electrical operation analogue means, this predetermined threshold all will be different, and namely bulky capacitor is a relative concept, does not have bulky capacitor truly; Same, small resistor refers to that resistance value is less than the resistance of a predetermined threshold, this predetermined threshold value that also neither one is fixing, in different capacitive apparatus electrical operation analogue means, this predetermined threshold all will be different, namely small resistor is also a relative concept, does not have small resistor truly.
The three-phase signal exported by capacitive load 500 will become capacitive three-phase signal, namely current output terminal 600 will export capacitive three-phase current signal, concrete, first current output terminal will export capacitive A phase current signal, second current output terminal will export capacitive B phase current signal, and the 3rd current output terminal will export capacitive C phase current signal.
Each transformer 400 is all connected with a voltage output end 700.Namely, the transformer 400 receiving A phase signals is connected with a voltage output end 700, A phase voltage signal is exported from this voltage output end 700, the transformer 400 receiving B phase signals is connected with a voltage output end 700, B phase voltage signal is exported from this voltage output end 700, the transformer 400 receiving C phase signals is connected with a voltage output end 700, exports C phase voltage signal from this voltage output end 700.The voltage output end 700 exporting A phase voltage signal can be claimed to be the first voltage output end, the voltage output end 700 exporting B phase voltage signal is the second voltage output end, the voltage output end 700 exporting C phase voltage signal is tertiary voltage output terminal, namely, A phase voltage signal is exported from the first voltage output end, export B phase voltage signal from the second voltage output end, export C phase voltage signal from tertiary voltage output terminal.
Optionally, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides can be used for simulating the actual operating mode of capacitive apparatus, calculates absolute medium consumption factor and the electric capacity of every compatibility equipment.
Based on technique scheme, the system chart of the analogue means of the capacitive apparatus electrical operation that the embodiment of the present invention provides, comprise power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end, wherein, power end is connected with power amplifier with three-phase signal generator respectively, power to three-phase signal generator and power amplifier, three-phase signal generator has three signal output parts, each signal output part exports a road three-phase signal, each signal output part all passes through power amplifier, transformer is connected with a current output terminal with capacitive load, each transformer is all connected with a voltage output end, required voltage signal and current signal under generation capacitive apparatus absolute method live detection environment, simulate the operation of power networks mode of operation of capacitive apparatus, very applicable skills training class uses, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment live detection, efficiently, while easy, there is higher security.
Optionally, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, can also comprise: casing,
Casing is for holding power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700.
Power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 are contained in casing, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 is made to be fixed in a casing, be convenient to centralized operation, and saving space, be convenient to store;
Simultaneously, due to the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, for the teaching of capacitive apparatus electrical operation, because the place of teaching may convert at any time, therefore this capacitive apparatus electrical operation analogue means needs to be carried at any time, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 are placed in same casing, so, more can be convenient to transport.
Optionally, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 can be placed in the inside that same casing is placed in casing, because casing has shell, shell has protection and barrier effect, therefore, so can must protect power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 well; And make to be positioned at the power end 100 of casing, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 and be all not easy to lose, the integrality of protection capacitive apparatus electrical operation analogue means.
Optionally, when power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 are placed in the inside for casing, a case lid can be set on casing, when the case lid of casing closes, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 are blocked by the case lid of casing, are protected by case lid; When the case lid of casing is opened, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 expose from casing, the operation that can need power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700.
Optionally, when without the need to using capacitive apparatus electrical operation analogue means to impart knowledge to students, the case lid of casing can be closed, avoid power end 100 in casing, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 to decline into dust, and affect the serviceability of capacitive apparatus electrical operation analogue means;
Optionally, when carrying capacitive apparatus electrical operation analogue means, also the case lid of casing can be closed, to avoid loss or the damage of certain or some equipment in casing, making the intact property of capacitive apparatus electrical operation analogue means.
Optionally, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 can be placed in the surface of casing, power end 100, three-phase signal generator 200, power amplifier 300, transformer 400, capacitive load 500, current output terminal 600 and voltage output end 700 are placed in the surface of casing, capacitive apparatus electrical operation analogue means can be made can be used for carrying out the simulation of capacitive apparatus electrical operation at any time.
Optionally, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides can also comprise: panel 800, realizes the simulation of capacitive apparatus electrical operation characteristic, make simulation process simpler, convenient by the operation of equipment on counter plate 800.
Optionally, Fig. 2 shows the structural representation of panel 800 in the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, and with reference to Fig. 2, this panel 800 can comprise: voltage obtains region 810 and electric current obtains region 820, wherein,
Voltage obtains region 810 and comprises voltage terminal, and for obtaining voltage output end 700 voltage signal, electric current obtains region 820 and comprises current terminal, for obtaining current output terminal 600 current signal.
Optionally, voltage terminal comprises the first voltage terminal 811 and the second voltage terminal 812, each first voltage terminal 811 is connected with a voltage output end 700, and voltage output end 700 voltage signal of acquisition is the voltage signal between the first terminal 811 and the second terminal 812.
Optionally, voltage obtains region 810 can comprise 4 voltage terminals, wherein, 4 voltage terminals comprise 3 the first voltage terminals 811 and 1 the second voltage terminal 812, each first voltage terminal 811 is connected with a voltage output end 700 respectively, second voltage terminal 812 is then equivalent to zero line, is obtained the voltage signal of each voltage output end 700 output by the electric potential difference measured respectively between the second voltage terminal 812 and each the first voltage terminal 811.
Voltage can be obtained 4 voltage terminals called after A voltage terminal, B voltage terminal, C voltage terminal and D voltage terminal respectively in region 810, wherein, A voltage terminal, B voltage terminal and C voltage terminal can be decided to be the first current terminal 811, D voltage terminal be decided to be the second voltage terminal 812.The first voltage output end voltage signal is obtained, i.e. A phase voltage signal by the electric potential difference measured between D voltage terminal and A voltage terminal; The second voltage output end voltage signal is obtained, i.e. B phase voltage signal by the electric potential difference measured between D voltage terminal and B voltage terminal; Tertiary voltage output end voltage signal is obtained, i.e. C phase voltage signal by the electric potential difference measured between D voltage terminal and C voltage terminal.
Optionally, current terminal comprises current terminal 821 and lower current terminal 822, each upper current terminal 821 and a lower current terminal 822 match, each upper current terminal 821 is connected with a current output terminal 600, when the lower current terminal 822 phase short circuit that each upper current terminal 821 and its match, above current signal between current terminal 821 and its corresponding lower current terminal 822 can be obtained by current sensor, namely can obtain current output terminal 600 current signal by current sensor.
Optionally, electric current obtains region 820 can comprise 6 current terminals, wherein, 6 current terminals comprise 3 upper current terminals 821 and 3 lower current terminals 822,3 upper current terminals 821 can be called current terminal on current terminal on A, the upper current terminal of B and C, 3 the lower current terminals 822 corresponding respectively with current terminal on current terminal, the upper current terminal of B and C on A be called under current terminal under A, B current terminal under current terminal and C.When under current terminal on A and A during current terminal short circuit, the first current output terminal current signal can be obtained in current sensor, i.e. A phase current signal; When under current terminal on B and B during current terminal short circuit, the second current output terminal current signal can be obtained in current sensor, i.e. B phase current signal; When under current terminal on C and C during current terminal short circuit, the 3rd current output terminal current signal can be obtained in current sensor, i.e. C phase current signal.
Optionally, when use the capacitive apparatus electrical operation analogue means that provides of the embodiment of the present invention be used for dry run calculate the absolute medium consumption factor of capacitive apparatus time, A phase voltage signal can be obtained by A voltage terminal and D voltage terminal, A phase current signal is obtained by current terminal under current terminal on short circuit A and A, with A phase voltage signal for reference signal, obtain the signal angle Φ between A phase voltage signal and A phase current signal
a, then by this signal angle Φ
aobtain the absolute medium consumption factor tan δ of the A phase of capacitive load 500 in the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides
a; In like manner, B phase voltage signal can be obtained by B voltage terminal and D voltage terminal, obtain B phase current signal by current terminal under current terminal on short circuit B and B, with B phase voltage signal for reference signal, obtain the signal angle Φ between B phase voltage signal and B phase current signal
b, then by this signal angle Φ
b, thus obtain the absolute medium consumption factor tan δ of B phase
b; And C phase voltage signal can also be obtained by C voltage terminal and D voltage terminal, C phase current signal is obtained by current terminal under current terminal on short circuit C and C, with C phase voltage signal for reference signal, obtain the signal angle Φ between C phase voltage signal and C phase current signal
c, then by this signal angle Φ
c, thus obtain the absolute medium consumption factor tan δ of this C phase
c.
Optionally, the formula calculating absolute dielectric loss tan δ can be:
tanδ＝tan(90°-Φ)；
Wherein, δ is the absolute dielectric loss angle of each compatibility equipment, and Φ is the angle between reference voltage signal with corresponding phase current signal
Optionally, the capacitive apparatus electrical operation analogue means that can also be provided by the embodiment of the present invention is used for dry run and calculates the electric capacity C of capacitive apparatus.
Optionally, the formula calculating electric capacity C can be:
C＝Icosδ/ωU；
Wherein, I is the current value of three-phase signal, and δ is absolute dielectric loss angle, and ω is the angular frequency value of three-phase signal, and U is the magnitude of voltage of three-phase signal; Wherein, when measuring capacitive apparatus A phase electric capacity, I is the current value of A phase current signal, ω is the angular frequency value of A phase signals, U is the magnitude of voltage of A phase voltage signal, and when measuring capacitive apparatus B phase electric capacity, I is the current value of B phase current signal, ω is the angular frequency value of B phase signals, U is the magnitude of voltage of B phase voltage signal, and when measuring capacitive apparatus C phase electric capacity, I is the current value of C phase current signal, ω is the angular frequency value of C phase signals, and U is the magnitude of voltage of C phase voltage signal.
Optionally, with reference to Fig. 2, in the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, panel 800 can also comprise: power supply area 830,
Power supply area 830 comprises alternating current input socket 831 and voltage switch 832, alternating current input socket 831 is connected with power end 100, after voltage switch 832 is closed, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides is started working, alternating current can be provided to power end 100 by alternating current input socket 831, when voltage switch 832 non-closed, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides quits work.
Optionally, alternating current input socket 831 can access the electric main of 220 volts.
Optionally, can first provide alternating current to power end 100 by alternating current input socket 831, then sealing voltage switch 832.
Optionally, the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides can also comprise: earth terminal.
Accordingly, optionally, with reference to Fig. 2, in the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, panel 800 can also comprise: ground terminal 840, be connected with earth terminal in capacitive apparatus electrical operation analogue means, for making earth terminal ground connection by ground wire, in case leak-stopping electricity waits the generation of mishap.
Optionally, Fig. 3 shows the structured flowchart of three-phase signal generator 200 in the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, and with reference to Fig. 3, this three-phase signal generator 200 can comprise: signal generator 210 and phase-shift circuit 220, wherein,
Signal generator 210, for generation of signal;
Optionally, signal generator 210 can be sine wave signal generator, triangular signal generator based and square-wave generator, generates sine wave signal respectively, triangular signal and square-wave signal.
Optionally, signal generator 210 can use integrated circuit (IC) L8038, integrated circuit (IC) L8038 is a kind of accurate oscillating integrated circuit having multiple waveforms and export, only need adjust other outer member in integrated circuit (IC) L8038, just can therefrom produce from 0.001 hertz to the low-distortion sine wave of 300 KHz, triangular wave, square wave isopulse signal.The frequency of integrated circuit (IC) L8038 output waveform and dutycycle can control by regulating related resistors and capacitance parameter to carry out, cost is low, circuit is simple, good operating stability.
Phase-shift circuit 220, the signal for being produced by signal generator 210 is divided into phase differential to be 120 Du tri-road signals, generates three-phase signal, i.e. A phase signals, B phase signals and C phase signals.
Phase-shift circuit 220 is made up of some operational amplifiers, resistance and capacitance component, the road sign calibration signal that signal generator 210 produces by phase-shift circuit 220 is divided into three road signals, by regulating the resistance parameter on each road, realize three road signals that its three signal output parts export between two between phase be 120 degree, and the amplitude of three road signals is all consistent.Phase-shift circuit is most important ingredient in device.
Optionally, Fig. 4 shows another system chart of the capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, and with reference to Fig. 4, this capacitive apparatus electrical operation analogue means can also comprise: auxiliary switch 900,
One end of auxiliary switch 900 is connected with power end 100, for the power supply inputted from power end 100 being divided into the different multiple power supplies of magnitude of voltage, auxiliary switch 900 other end is connected with power amplifier 300 with three-phase signal generator 200 respectively, for the power supply being divided into magnitude of voltage different is flowed to three-phase signal generator 200 and power amplifier 300 respectively, wherein, the signal generator 210 comprised in three-phase signal generator 200 is all connected with auxiliary switch 900 with phase-shift circuit 220, powers to signal generator 210 and phase-shift circuit 220 by auxiliary switch 900.
Optionally, after 220 volts AC input auxiliary switches 900 of power end 100, produce+24 volts/1 ampere and+5 volts/1 ampere two groups of accessory power supplys, wherein, the accessory power supply supply three-phase signal generator 200 of+5 volts works; The accessory power supply supply power amplifier 300 of+24 volts works, and wherein, the accessory power supply of+5 volts supplies signal generator 210 in three-phase signal generator 200 simultaneously and phase-shift circuit 220 works.
The capacitive apparatus electrical operation analogue means that the embodiment of the present invention provides, be applicable to skills training class to use, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment absolute method live detection, while efficient, easy, there is higher security.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a capacitive apparatus electrical operation analogue means, is characterized in that, comprising: power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end, wherein,
Described power end is connected with power amplifier with three-phase signal generator respectively, described three-phase signal generator comprises three signal output parts, each signal output part is all connected with a current output terminal by power amplifier, transformer and capacitive load, and each transformer is all connected with a voltage output end.
2. analogue means according to claim 1, is characterized in that, also comprises: casing, for holding power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end.
3. analogue means according to claim 2, is characterized in that, described power end, three-phase signal generator, power amplifier, transformer, capacitive load, current output terminal and voltage output end are positioned at the surface of described casing.
4. analogue means according to claim 1, it is characterized in that, also comprise: panel, described panel comprises voltage and obtains region and electric current acquisition region, described voltage obtains region and comprises voltage terminal, for obtaining voltage output end voltage signal, described electric current obtains region and comprises current terminal, for obtaining current output terminal current signal.
5. analogue means according to claim 4, it is characterized in that, described voltage terminal comprises the first voltage terminal and the second voltage terminal, each first voltage terminal is connected with a voltage output end, and the voltage output end voltage signal of acquisition is the voltage signal between the first voltage terminal and the second voltage terminal.
6. analogue means according to claim 4, it is characterized in that, described current terminal comprises current terminal and lower current terminal, each upper current terminal is connected with a current output terminal, obtains current output terminal current signal by upper current terminal and its corresponding lower current terminal short circuit.
7. analogue means according to claim 4, it is characterized in that, described panel also comprises: power supply area, and described power supply area comprises alternating current input socket and voltage switch, after described voltage switch is closed, provide alternating current by described alternating current input socket to power end.
8. analogue means according to claim 4, is characterized in that,
Described analogue means also comprises: earth terminal;
Described panel also comprises: ground terminal, is connected with described earth terminal, for making earth terminal ground connection by ground wire.
9. analogue means according to claim 1, is characterized in that, described three-phase signal generator comprises: signal generator and phase-shift circuit, wherein,
Described signal generator, for generation of signal;
Described phase-shift circuit, for being divided into by described signal phase differential to be 120 Du tri-road signals, generates three-phase signal.
10. analogue means according to claim 1, is characterized in that, also comprises auxiliary switch, and described auxiliary switch one end is connected with power end, and the other end is connected with power amplifier with three-phase signal generator respectively.
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| CN201410720995.9A CN104361802B (en) | 2014-12-02 | 2014-12-02 | A kind of capacitive apparatus electrical operation analogue means |
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| CN201410720995.9A CN104361802B (en) | 2014-12-02 | 2014-12-02 | A kind of capacitive apparatus electrical operation analogue means |
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| CN104361802B (en) | 2018-01-02 |
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