CN108957218A - A kind of mutual inductor is wireless polarity test device and method - Google Patents
A kind of mutual inductor is wireless polarity test device and method Download PDFInfo
- Publication number
- CN108957218A CN108957218A CN201810973530.2A CN201810973530A CN108957218A CN 108957218 A CN108957218 A CN 108957218A CN 201810973530 A CN201810973530 A CN 201810973530A CN 108957218 A CN108957218 A CN 108957218A
- Authority
- CN
- China
- Prior art keywords
- resistance
- mutual inductor
- pin
- triode
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention discloses a kind of wireless polarity test device of mutual inductor and methods, test device includes the main equipment for being connected to mutual inductor primary side and the test equipment for being connected to mutual inductor secondary side, main equipment includes wireless receiving module, signal output module, signal-adjusting module and power-switching circuit, test equipment includes wireless transmitter module, control module and measurement module, and method is the following steps are included: be connected respectively to mutual inductor secondary side and mutual inductor primary side for test equipment and main equipment；At test equipment end by switch control, selection test information, and the test information is radioed into main equipment；Main equipment is exported according to the test information selection to the electric signal of mutual inductor primary side；The induced current for measuring mutual inductor secondary side, judges mutual inductor polarity.Compared with prior art, the present invention improves work on the spot efficiency when testing mutual inductor, saves manpower and time, substantially increases the accuracy of measurement.
Description
Technical field
The present invention relates to mutual inductor polarity the field of test technology, specifically a kind of wireless polarity test device of mutual inductor
And method.
Background technique
In substation's construction, mutual inductor polarity test job is a pith of relay protection work, is become in tradition
It is DC power supply method that the mutual inductor polarity test job in power station, which is applied at most, and traditional mutual inductor polarity test job needs 3-4
People's operation, it is secondary when current transformer changes greatly when measuring CT (current transforme, current transformer)
The induced current very little of side, it is virtually impossible to deflect pointer gauge, just can not accurately judge if reusing the milliampere shelves of multimeter
Whether current transformer polarity is correct, and frequently not only causes to waste using dry cell but also be unfavorable for environmental protection.
In measurement PT (Potential transforme, voltage transformer) or CVT (Capacitor Voltage
Transformer, capacitance type potential transformer) when, very big due to being added in primary side voltage needs, conventional method requires manually
It goes to add a higher voltage, or one high voltage of measurement, leads to that there is certain risk in the course of work.
The traditional Work tool for measuring mutual inductor is scattered, and rapid wear, safety is poor, without professional tool, seriously constrains scene
Working efficiency；And two groups of personnel are needed during traditional experiment, dosage side at a distance of remote, is tested different from test with test side
Step, it is error-prone, and labor intensive and time；Conventional operation time is long, and personnel cooperate efficiency slow, it is necessary to by repeatedly measuring
Judgment accuracy is improved, the working time is greatly increased.
Summary of the invention
For the above-mentioned the shortcomings of the prior art of customer service, a kind of wireless polarity of mutual inductor is provided in the embodiment of the present invention and is surveyed
Device and method is tried to test the polarity of mutual inductor, to solve the problems of the prior art.
On the one hand, the technical solution adopted by the present invention to solve the technical problems is a kind of wireless polarity test dress of mutual inductor
It sets, including being connected to the main equipment of mutual inductor primary side and being connected to the test equipment of mutual inductor secondary side；The main equipment packet
Wireless receiving module, signal output module, signal-adjusting module and power-switching circuit are included, the test equipment includes wireless hair
Penetrate module, control module and measurement module, the control module connects wireless transmitter module, the wireless transmitter module and wireless
Receiving module is wirelessly connected, and the wireless receiving module is sequentially connected signal output module and mutual inductor primary side, the signal
Output module is also connected with signal-adjusting module, and the power-switching circuit connects wireless receiving module, the measurement module connection
Mutual inductor secondary side.
Optionally, the control module includes that the input terminal of three sections of knobs SA, three sections of knob SA connect two sections of switches
The first output end of S2, the first output end, second output terminal and the third output end of three sections of knob SA are connect by divider resistance
The second output terminal on ground, two sections of switch S2 is grounded by divider resistance, the input terminal connection button S1's of two sections of switch S2
One terminals, another terminals of button S1 are separately connected one end of resistance R4 and the base stage of triode Q1, and resistance R4's is another
End is separately connected the emitter of triode Q1 and the cathode of diode (LED) 1, and the collector of triode Q1 connects wireless transmission mould
The anode of block, diode (LED) 1 passes through power switch S0 connection power supply.
Optionally, the wireless transmitter module includes coding chip, the Vcc of the collector connection coding chip of triode Q1
Pin, the Dout pin of coding chip connect transmitting antenna, D0 pin, D1 pin, D2 pin and the D3 pin point of coding chip
It Lian Jie not the first output end of three sections of knob SA, second output terminal, the second output terminal of third output end and two sections of switch S2.
Optionally, the measurement module includes microampere meter, positive test pencil and negative test pencil, and the button S1 is placed in positive test pencil
On, the first interface of positive test pencil is audio interface, connects one end of mutual inductor secondary side, and the one of second interface connection microampere meter is defeated
Enter end, the other end of the first interface connection mutual inductor secondary side of negative test pencil, second interface connects another input terminal of microampere meter.
Optionally, the signal output module includes current output circuit and voltage follower circuit, the Signal Regulation mould
Block includes current regulating circuit and voltage regulator circuit；The wireless receiving module includes decoding chip, the D0 pipe of decoding chip
Foot, D1 pin and D2 pin connect current output circuit, and the D3 pin of decoding chip connects voltage follower circuit, decoding chip
VCC pin connects 5V power supply, the VSS pin ground connection of decoding chip, and the OSV1 pin of decoding chip is managed by resistance R16 and OSV2
Foot is connected, and the VT pin of decoding chip is connected by resistance R15 with the GND pin for receiving chip, and the DIN pin of decoding chip connects
The DATA pin and DATA1 pin for receiving chip receive the VCC pin connection 5V power supply of chip, receive the TX pin of chip
Connect receiving antenna.
Optionally, the voltage follower circuit includes resistance R1, and one end of resistance R1 connects the D3 pin of decoding chip,
The other end of resistance R1 is separately connected one end of resistance R2 and the base stage of triode Q2, the other end and triode Q2 of resistance R2
Emitter be grounded, the collector of triode Q2 is separately connected one end of electromagnetic type relay K1 coil, relay K2 coil
One end and diode D1 anode, the other end and diode of the other end of electromagnetic type relay K1 coil, 2 coil of relay
The cathode of D1 is all connected with power supply VCC, and one end of the contact electromagnetic type relay K1 connects the port V3, and the other end is separately connected the port VN
Or the port V2, one end of 2 contact of relay connect power supply VCC, the other end connects deferred action circuit by the port V0.
Optionally, the deferred action circuit includes relay K6, and one end of the relay K6 coil is separately connected V0
Port, the cathode of diode D6 and resistance R3 one end, the other end of relay K6 coil is separately connected the current collection of triode Q6
The anode of pole and diode D6, triode Q6 emitter ground connection, the base stage of triode Q6 be separately connected resistance R11 one end and
The anode of voltage-stabiliser tube DO1, the cathode of voltage-stabiliser tube DO1 are separately connected the other end of resistance R3 and one end of capacitor C1, capacitor C1's
The other end of the other end and resistance R11 are grounded, and one end of the contact relay K6 connects the port V0, the contact relay K6 it is another
End connects voltage regulator circuit by the port V1.
Optionally, the current output circuit includes A phase current output circuit, B phase current output circuit and C phase current
Output circuit, the A phase current output circuit include resistance R5, the D0 pin of one end connection decoding chip of the resistance R5,
The other end of resistance R5 is separately connected one end of resistance R6 and the base stage of triode Q3, the other end of resistance R6 and triode Q3's
Emitter is grounded, and the collector of triode Q3 is separately connected one end of relay K3 coil and the anode of diode D3, relay
The other end of device K3 coil and the cathode of diode D3 are all connected with power supply VCC, and one end of the contact relay K3 connects current regulation
Circuit, the other end connect the port IA；
The B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of the resistance R7,
The other end is separately connected one end of resistance R8 and the base stage of triode Q4, and the other end of resistance R8 and the emitter of triode Q4 are equal
Ground connection, the collector of triode Q4 are separately connected one end of relay K4 coil and the anode of diode D4, relay K4 coil
The other end and the cathode of diode D4 be all connected with power supply VCC, one end of the contact relay K4 connects current regulating circuit, separately
One end connects the port IB；
The C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of the resistance R9,
The other end is separately connected one end of resistance R10 and the base stage of triode Q5, the other end of resistance R10 and the emitter of triode Q5
It is grounded, the collector of triode Q5 is separately connected one end of relay K5 coil and the anode of diode D5, relay K5 line
The other end of circle and the cathode of diode D5 are all connected with power supply VCC, and one end of the contact relay K5 connects current regulating circuit, separately
One end connects the port IC.
Optionally, the tester further includes wrist strap, pedestal, the first rotating part and the second rotating part, and the pedestal is fixed
It is connected on wrist strap, card slot, the buckle that setting is cooperatively connected with card slot on the first rotating part, first rotation is set on pedestal
Portion is rotated vertically by being buckled in card slot, and second rotating part is fixedly connected with test equipment, the second rotating part and first
Rotating part is rotatablely connected by screw rod.
On the other hand, the present invention additionally provides a kind of wireless polarity test method of mutual inductor, the survey according to test device
Method for testing the following steps are included:
Test equipment and main equipment are connected respectively to mutual inductor secondary side and mutual inductor primary side by S1；
The test information at test equipment end by switch control, selection test information, and is radioed to master by S2
Equipment；
S3, main equipment are exported according to the test information selection to the electric signal of mutual inductor primary side；
S4 measures the induced current of mutual inductor secondary side, judges mutual inductor polarity.
The effect provided in summary of the invention is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution have the following advantages that or the utility model has the advantages that
1, a kind of wireless polarity test device of mutual inductor of the present invention includes main equipment and test equipment, and the signal of main equipment is defeated
Module is connected to mutual inductor primary side out, and the measurement module of test equipment connects mutual inductor secondary side, few using number of devices, and
Only need a people that can singly complete the polarity test of mutual inductor, improve work on the spot efficiency, save manpower and when
Between, substantially increase the accuracy of measurement.
2, wireless receiving module receives the wireless signal of wireless transmitter module transmitting, the output of wireless receiving module driving current
Circuit output A phase, B phase and C phase current, and A phase, B phase and C phase current are connected to mutual inductor primary side, avoid the prior art
In frequently use the wasting situation of dry cell, wireless receiving module driving voltage output circuit output voltage, output
Voltage is also connected to mutual inductor primary side, avoids in the prior art the primary side high voltage the case where, increases work
Safety.
3, the wireless polarity tester of mutual inductor further includes wrist strap, pedestal, the first rotating part and the second rotating part, in mutual inductor
When secondary side test mutual inductor polarity, test equipment can be fixed in wrist by wrist strap, and as needed set test
It is standby to be rotated, facilitate tester to test the polarity of mutual inductor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the module map of the wireless polarity test device of mutual inductor；
Fig. 2 is test equipment control module and wireless module structure chart；
Fig. 3 is test equipment measurement module structure chart；
Fig. 4 is test equipment measurement test pencil wiring diagram；
Fig. 5 is power-switching circuit structure chart；
Fig. 6 is wireless receiving module structure chart；
Fig. 7 is voltage follower circuit structure chart；
Fig. 8 is deferred action circuit structure diagram；
Fig. 9 is voltage regulator circuit structure chart；
Figure 10 is current regulating circuit structure chart；
Figure 11 A is A phase current output circuit figure；
Figure 11 B is B phase current output circuit figure；
Figure 11 C is C phase current output circuit figure；
Figure 12 is test equipment schematic diagram (one)；
Figure 13 is test equipment schematic diagram (two)；
Figure 14 is main equipment schematic diagram；
Figure 15 is the flow diagram of the wireless polarity test method of mutual inductor.
In figure, 1 test equipment, 10 wrist straps, 101 pedestals, 1011 card slots, 102 first rotating parts, 1021 buckle,
103 second rotating parts, 104 screw rods, tri- sections of knobs of SA, bis- sections of S2 switches, 11 transmitting antennas, 12 3.5mm audios connect
Mouth, 13 standard interfaces, 14 microampere meters, 15 test equipment power switches；2 main equipments, IA A phase current output port, IB
B phase current output port, IC C phase current output port, IN N electrode current output port, V3 positive polarity output port, VN
Voltage cathode output port, 211 voltage adjusting knobs, 212 current adjusting knobs, 22 receiving antennas, 23 main equipment power supplys
Switch.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used to realize different knots of the invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
As shown in Figure 1, the wireless polarity test device of a kind of mutual inductor of the invention, including being connected to mutual inductor primary side
Main equipment and the test equipment for being connected to mutual inductor secondary side；Main equipment includes wireless receiving module, signal output module, signal
Adjustment module, power-switching circuit and deferred action circuit, signal output module include current output circuit and voltage output electricity
Road, signal-adjusting module include current regulating circuit and voltage regulator circuit, and test equipment includes wireless transmitter module, control mould
Block and measurement module, control module connect wireless transmitter module, and wireless transmitter module and wireless receiving module are wirelessly connected, wirelessly
Receiving module is sequentially connected signal output module and mutual inductor primary side, and signal output module is also connected with signal-adjusting module, electricity
Power-switching circuit connects wireless receiving module, deferred action circuit connection voltage regulator circuit, and measurement module connects mutual inductor two
Secondary side.
As shown in Fig. 2, control module includes three sections of knob SA, the input terminal of three sections of knob SA connects the of two sections of switch S2
One output end, the first output end, second output terminal and the third output end of three sections of knob SA are grounded by divider resistance, and two sections
The second output terminal of switch S2 is grounded by divider resistance, and a terminals of the input terminal connection button S1 of two sections of switch S2 are pressed
Another terminals of button S1 are separately connected one end of resistance R4 and the base stage of triode Q1, and the other end of resistance R4 is separately connected three
The collector of the emitter of pole pipe Q1 and the cathode of diode (LED) 1, triode Q1 connects wireless transmitter module, diode (LED) 1
Anode pass through power switch S0 connection power supply.
Yellow indicator lamp is connected to the first output end of three sections of knob SA, and green indicator light is connected to three sections of knob SA's
Second output terminal, red indicating light are connected to the third output end of three sections of knob SA, and blue indicator light is connected to two sections of switch S2
Second output terminal, yellow indicator lamp is used to indicate the output of A phase current, and green indicator light is used to indicate the output of B phase current, red
Indicator light is used to indicate the output of C phase current, and blue indicator light is used to indicate positive polarity output.
Wireless transmitter module includes coding chip, the collector connection coding chip of model PT2262, triode Q1
Vcc pin, the Dout pin of coding chip connect transmitting antenna, and transmitting antenna selects 12V power supply power supply, and transmitting antenna has
Ground line, the Vss pin and TE pin of coding chip are grounded, and the OCS1 pin of coding chip passes through resistance R and OCS2 pin
Connection, the collector of the Vcc pin connecting triode Q1 of coding chip, D0, D1, D2 and D3 pin of coding chip connect respectively
The first output end, the second output terminal, the second output terminal of third output end and two sections of switch S2 of three sections of knob SA are connect, day is emitted
Line emits wireless signal to the wireless receiving module of main equipment, and coding chip is that wireless signal is encoded.
As shown in figure 3, measurement module includes microampere meter, positive test pencil and negative test pencil, the interface end of positive test pencil connects microampere meter
An input terminal, negative test pencil interface end connection microampere meter another input terminal.
As shown in figure 4, button S1 is placed on positive test pencil, the first interface of positive test pencil is audio interface, connects mutual inductor
One end of secondary side, second interface connect an input terminal of microampere meter, the first interface connection mutual inductor secondary side of negative test pencil
The other end, second interface connect another input terminal of microampere meter, and button S1-1 represents a terminals of button S1, and S1-2 representative is pressed
Another terminals of button S1,3-0 represent the first interface of positive test pencil, and 3-1 represents a terminals of button S1, and 3-2 represents button
Another terminals of S1.
Button S1 is switch button, and when button S1 is pressed, control module is connected with wireless transmitter module, to main equipment
Wireless signal is sent, main equipment is mutual inductor primary side input electrical signal, and measurement module is in the secondary side test mutual inductor of mutual inductor
Polarity.
As shown in figure 5 ,+12V voltage is converted to+5V voltage, the input voltage of power-switching circuit by power-switching circuit
Connect the anode of diode D7, the V1 pin of voltage stabilizing chip of the cathode connection model LM7815 of diode D7, capacitor C2
One end of one end and capacitor C3, the other end of capacitor C2 and the other end of capacitor C3 are grounded, and the GND pin of voltage stabilizing chip connects
Ground, the VO pin of voltage stabilizing chip are separately connected one end of capacitor C4 and capacitor C5, and the other end of capacitor C4 and capacitor C5 connect
Ground, one end of one end connection resistance R12 of capacitor C5, the anode of the other end connection Light-emitting diode LED 2 of resistance R12 shine
The cathode of diode (LED) 2 is grounded, and one end of capacitor C4 is output voltage port, and+5V the voltage exported is to wireless receiving module
Power supply.
As shown in fig. 6, wireless receiving module includes receiving chip and decoding chip, receives chip and receive wireless signal, connect
The model SCSR121 of chip is received, decoding chip is decoded wireless signal, the model PT2272 of decoding chip, receives
The TX pin of chip connects antenna, receives the wireless signal of wireless transmitter module transmitting, receives the VCC pin connection power supply of chip
+ 5V the voltage of conversion circuit output, the DATA pin and DATA1 pin that receive chip are all connected with the DIN pin of decoding chip,
The GND pin for receiving chip passes through the VT pin of resistance R15 connection decoding chip, and the OSV1 pin of decoding chip passes through resistance
The OSV2 pin of R16 connection decoding chip, the VSS pin ground connection of decoding chip, D0 pin, D1 pin and the D2 pipe of decoding chip
Foot connects current output circuit, and the D3 pin of decoding chip connects voltage follower circuit, control a certain phase of electric current output or
Control the output of voltage.
As shown in fig. 7, voltage follower circuit includes resistance R1, the D3 pin of one end connection decoding chip of resistance R1, electricity
The other end of resistance R1 is separately connected one end of resistance R2 and the base stage of triode Q2, the other end of resistance R2 and triode Q2's
Emitter is grounded, and the collector of triode Q2 is separately connected one end of electromagnetic type relay K1 coil, relay K2 coil
The anode of one end and diode D1, the other end and diode D1 of the other end of 1 coil of electromagnetic type relay, 2 coil of relay
Cathode be all connected with power supply VCC, one end of 1 contact of electromagnetic type relay connects the port V3, the other end be separately connected the port VN or
The port V2, one end of 2 contact of relay connect power supply VCC, and the other end connects deferred action circuit by the port V0.
Relay 2 is controlled by decoding chip D3 pin and is attracted, when D3 pin is connected, triode Q2 conducting, and relay K1
Electric, corresponding contact movement is obtained with relay K2 coil.When relay K2 movement, the port V0 is connected, and is delay by the port V0
Actuating circuit provides voltage, and when electromagnetic type relay 1 acts, the port V2 is connect with the port V3, and voltage follower circuit passes through V2
Port is to the port V3 output voltage, and when electromagnetic type relay 1, which acts, to be returned, the port V3 and the port VN are connected, voltage output electricity
Road electric discharge.
The output voltage V3 of voltage follower circuit is connected in a side loop of PT or CVT.
As shown in figure 8, deferred action circuit includes relay K6, the end V0 that one end of relay K6 coil is separately connected
One end of mouth, the cathode of diode D6 and resistance R3, the other end of relay K6 coil are separately connected the collector of triode Q6
With the anode of diode D6, the emitter of triode Q6 is grounded, the base stage of triode Q6 be separately connected resistance R11 one end and
The anode of voltage-stabiliser tube DO1, the cathode of voltage-stabiliser tube DO1 are separately connected the other end of resistance R3 and one end of capacitor C1, capacitor C1 and
The other end of resistance R11 is grounded, and one end of the contact relay K6 connects the port V0, and the other end of the contact relay K6 passes through V1
Port connects voltage regulator circuit.
Deferred action circuit connects voltage regulator circuit by the port V1, and 5 seconds voltage is provided for voltage regulator circuit, prevents
Only voltage regulator circuit, which works long hours, burns out device.
As shown in figure 9, voltage regulator circuit includes pwm chip, model OZ9RR, the PWM control of pwm chip
The grid of the DRV1 pin connection N-channel power field effect pipe VF1 of coremaking piece, the source electrode ground connection of VF1, the drain electrode of VF1, which connects, to be become
One end of depressor T first winding, the grid of the DRV2 pin connection N channel power field-effect tube VF2 of pwm chip, VF2
Source electrode ground connection, VF2 drain electrode connection transformer T first winding the other end, transformer T first winding centre cap connection
The port V1 of deferred action circuit, one end ground connection of transformer T secondary winding, the other end connection resistance R13's of secondary winding
One end, one end of the other end connection variable resistance R14 of resistance R13, the other end ground connection of variable resistance R14, PWM control core
One end of the ISFN pin connection resistance R13 of piece, the other end of resistance R13 connect output voltage V2, output voltage VN ground connection.
Output voltage V2 provides voltage for voltage follower circuit, by the size for adjusting variable resistance R14, thus it is possible to vary defeated
The size of voltage V2 out, to change the size of the output voltage V3 of voltage follower circuit.
As shown in Figure 10, current regulating circuit includes power conversion chip XL4016E1, the input electricity of current regulating circuit
Pressure VCC is+12V, and output voltage VO UT is+1.5V, and the GND pin of power conversion chip is grounded, the VIN pipe of power conversion chip
Foot connects the anode of VCC, and the VIN pin of power conversion chip is also connected with one end of capacitor C8, and the other end of capacitor C8 connects electricity
The other end that one end of the VC pin of source transformation chip, capacitor C6 and capacitor C7 are all connected with VCC, capacitor C6 and capacitor C7 connects
Ground, the output end of the SW pin connection voltage-stabiliser tube DO2 of power conversion chip, the input end grounding of voltage-stabiliser tube DO2, voltage-stabiliser tube DO2
Output end be also connected with one end of inductor L1, one end of the other end connection capacitor C9 of inductor L1 and one end of capacitor C10,
The other end of capacitor C9 and the other end of capacitor C10 are grounded, one end of one end connection resistance R15 of capacitor C10, resistance R15
Other end connection resistance R16 one end, the other end ground connection of resistance R16, the FB pin of power conversion chip connects resistance R15
The other end, one end of capacitor C10 is separately connected one end of resistance R17 and one end of variable resistance R18, variable resistance R18's
Other end connection output electric current I1, the other end of resistance R17 and the other end of variable resistance R18 are grounded, and output electric current IN connects
Ground exports electric current I1 connection current output circuit.
The electric current I1 that exports of current regulating circuit provides input current to current output circuit, by adjusting variable resistance
The size of R18, thus it is possible to vary the size of output electric current I1, to change the output electric current IA of current output circuit, output electric current
The size of IB and output electric current IC.
As shown in Figure 11 A, Figure 11 B and Figure 11 C, current output circuit includes A phase current output circuit, the output of B phase current
Circuit and C phase current output circuit, A phase current output circuit include resistance R5, the D0 of one end connection decoding chip of resistance R5
Pin, the other end of resistance R5 are separately connected one end of resistance R6 and the base stage of triode Q3, the other end of resistance R6 and three poles
The emitter of pipe Q3 is grounded, and one end that the collector of triode Q3 is separately connected relay K3 coil and diode D3 are just
Pole, the other end of relay K3 coil and the cathode of diode D3 are all connected with power supply VCC, and one end of the contact relay K3 connects electricity
Stream adjusts circuit, and the other end connects the port IA；
B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of resistance R7, other end difference
One end of resistance R8 and the base stage of triode Q4 are connected, the other end of resistance R8 and the emitter of triode Q4 are grounded, three poles
The collector of pipe Q4 is separately connected one end of relay K4 coil and the anode of diode D4, the other end of relay K4 coil and
The cathode of diode D4 is all connected with power supply VCC, and one end of the contact relay K4 connects current regulating circuit, and the other end connects the end IB
Mouthful；
C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of resistance R9, other end difference
One end of resistance R10 and the base stage of triode Q5 are connected, the other end of resistance R10 and the emitter of triode Q5 are grounded, and three
The collector of pole pipe Q5 is separately connected one end of relay K5 coil and the anode of diode D5, the other end of relay K5 coil
It is all connected with power supply VCC with the cathode of diode D5, one end of the contact relay K5 connects current regulating circuit, and the other end connects IC
Port.
The electric current IB and C phase current output of electric current IA, B phase current output circuit output of A phase current output circuit output
The electric current IC of circuit output is connected in a side loop of CT.
As shown in Figure 12,13, test equipment 1 includes that there are three gears, respectively A phase by three sections of knobs SA, three sections of knob SA
Electric current output, the output of B phase current and the output of C phase current, two sections of switch S2 there are two gear, respectively CT grades with PT/CVT grades,
Transmitting antenna 11 emits wireless signal to the wireless receiving module of main equipment 2, and 3.5mm audio interface 12 connects positive test pencil, standard
Interface 13 connects negative test pencil, and microampere meter 14 shows the polarity of mutual inductor, and test equipment power switch 15 is the power supply of test equipment 1
Switch button, test equipment 1 further include wrist strap 10, pedestal 101, the first rotating part 102 and the second rotating part 103, pedestal 101
It is fixedly connected on wrist strap 10, card slot 1011 is set on pedestal 101, setting connects with the cooperation of card slot 1011 on the first rotating part 102
The buckle 1021 connect, the first rotating part 102 are rotated in card slot 1011 vertically by buckle 1021, the second rotating part 103 and survey
Examination equipment 1 is fixedly connected, and the second rotating part 103 is rotatablely connected with the first rotating part 102 by screw rod 104.
Test equipment is wearable in wrist by wrist strap 10, and aspect tester is in the secondary side test mutual inductor of mutual inductor
Polarity.
As shown in figure 14, main equipment 2 includes that A phase current output port IA, B phase current output port IB, C phase current are defeated
Exit port IC, N electrode current output port IN, positive polarity output port V3, voltage cathode output port VN, voltage adjusting knob
211, current adjusting knob 212, receiving antenna 22 and main equipment power switch 23.
As shown in figure 15, the wireless polarity test method of a kind of mutual inductor of the invention the following steps are included:
Test equipment and main equipment are connected respectively to mutual inductor secondary side and mutual inductor primary side by S1；
The test information at test equipment end by switch control, selection test information, and is radioed to master by S2
Equipment；
S3, main equipment are exported according to the test information selection to the electric signal of mutual inductor primary side；
S4 measures the induced current of mutual inductor secondary side, judges mutual inductor polarity.
Step S1, the concrete operations mode of step S2, step S3 and step S4 are as follows:
When testing CT, main equipment power switch, A phase current output port IA, B phase current output port IB and C are opened
Phase current output port IC is accessed in side loop of CT, and N electrode current output port IN ground connection revolves current adjusting knob
Suitable position is gone to, test equipment power switch is opened, two sections of switch S2 are arranged at CT grades, will if test A phase current
Three sections of knob SA setting is exported in A phase current, and measurement test pencil is inserted on the secondary side terminal of CT to be tested, by lower button S1,
Transmitting antenna emits wireless signal to receiving antenna simultaneously, and test equipment yellow indicator lamp is bright；If test b phase current, by three
Section knob SA setting is exported in B phase current, measurement test pencil is inserted on the secondary side terminal of CT to be tested, by lower button S1, together
When transmitting antenna to receiving antenna emit wireless signal, test equipment green indicator light is bright；If C phase current is tested, by three sections
Knob SA setting is exported in C phase current, measurement test pencil is inserted on the secondary side terminal of CT to be tested, by lower button S1, simultaneously
Transmitting antenna emits wireless signal to receiving antenna, and test equipment red indicating light is bright, and above-mentioned three kinds of situations pass through observation microampere
Table indicator deflects the polarity for judging CT.
When testing PT or CVT, main equipment power switch is opened, positive polarity output port V3 accesses PT's or CVT
In side loop, voltage adjusting knob is rotated to suitable position by voltage cathode output port VN ground connection, is opened test and is set
Stand-by power source switch, two sections of switch S2 are arranged at PT/CVT grades, and measurement test pencil is inserted in the secondary side terminal of PT or CVT to be tested
On, by lower button S1, while transmitting antenna emits wireless signal to receiving antenna, and test equipment blue indicator light is bright, passes through sight
Examine the polarity that the deflection of microampere meter indicator judges PT or CVT.
The above is the preferred embodiment of the present invention, for those skilled in the art,
Without departing from the principles of the invention, several improvements and modifications can also be made, these improvements and modifications are also regarded as this hair
Bright protection scope.
Claims (10)
1. a kind of wireless polarity test device of mutual inductor, characterized in that main equipment and company including being connected to mutual inductor primary side
Connect the test equipment in mutual inductor secondary side；The main equipment includes wireless receiving module, signal output module, Signal Regulation mould
Block and power-switching circuit, the test equipment include wireless transmitter module, control module and measurement module, the control module
Wireless transmitter module is connected, the wireless transmitter module and wireless receiving module are wirelessly connected, and the wireless receiving module is successively
Connection signal output module and mutual inductor primary side, the signal output module are also connected with signal-adjusting module, and the power supply turns
Circuit connection wireless receiving module is changed, the measurement module connects mutual inductor secondary side.
2. the wireless polarity test device of a kind of mutual inductor according to claim 1, characterized in that the control module includes
The first output end of two sections of switch S2 of input terminal connection of three sections of knobs SA, three sections of knob SA, the first of three sections of knob SA
Output end, second output terminal and third output end are grounded by divider resistance, and the second output terminal of two sections of switch S2 is logical
Cross divider resistance ground connection, a terminals of the input terminal connection button S1 of two sections of switch S2, another terminals difference of button S1
One end of resistance R4 and the base stage of triode Q1 are connected, the other end of resistance R4 is separately connected emitter and two poles of triode Q1
The cathode of pipe LED1, the collector of triode Q1 connect wireless transmitter module, and the anode of diode (LED) 1 passes through power switch S0
Connect power supply.
3. the wireless polarity test device of a kind of mutual inductor according to claim 2, characterized in that the wireless transmitter module
Including coding chip, the Vcc pin of the collector connection coding chip of triode Q1, the Dout pin of coding chip connects transmitting
Antenna, D0 pin, D1 pin, D2 pin and the D3 pin of coding chip are separately connected the first output end of three sections of knob SA,
The second output terminal of two output ends, third output end and two sections of switch S2.
4. the wireless polarity test device of a kind of mutual inductor according to claim 3, characterized in that the measurement module includes
Microampere meter, positive test pencil and negative test pencil, the button S1 are placed on positive test pencil, and the first interface of positive test pencil is audio interface, even
One end of mutual inductor secondary side is connect, second interface connects an input terminal of microampere meter, and the first interface of negative test pencil connects mutual inductor
The other end of secondary side, second interface connect another input terminal of microampere meter.
5. the wireless polarity test device of a kind of mutual inductor according to claim 1, characterized in that the signal output module
Including current output circuit and voltage follower circuit, the signal-adjusting module includes that current regulating circuit and voltage adjust electricity
Road；The wireless receiving module includes decoding chip, and D0 pin, the D1 pin of decoding chip connect electric current output electricity with D2 pin
Road, the D3 pin of decoding chip connect voltage follower circuit, and the VCC pin of decoding chip connects 5V power supply, the VSS of decoding chip
The OSV1 pin of pin ground connection, decoding chip is connected by resistance R16 with OSV2 pin, and the VT pin of decoding chip passes through resistance
R15 is connected with the GND pin for receiving chip, and the DIN pin connection of decoding chip receives the DATA pin and DATA1 pipe of chip
Foot receives the VCC pin connection 5V power supply of chip, receives the TX pin connection receiving antenna of chip.
6. the wireless polarity test device of a kind of mutual inductor according to claim 5, characterized in that the voltage follower circuit
Including resistance R1, the D3 pin of one end connection decoding chip of resistance R1, the other end of resistance R1 is separately connected the one of resistance R2
The base stage at end and triode Q2, the other end of resistance R2 and the emitter of triode Q2 are grounded, the collector point of triode Q2
Not Lian Jie electromagnetic type relay K1 coil one end, one end of relay K2 coil and the anode of diode D1, electromagnetic type relay
The other end, the other end of 2 coil of relay and the cathode of diode D1 of device K1 coil are all connected with power supply VCC, electromagnetic type relay
One end of the contact device K1 connects the port V3, and the other end is separately connected the port VN or the port V2, and one end of 2 contact of relay connects electricity
Source VCC, the other end connect deferred action circuit by the port V0.
7. the wireless polarity test device of a kind of mutual inductor according to claim 6, characterized in that the deferred action circuit
Including relay K6, one end of the relay K6 coil is separately connected the one of the port V0, the cathode of diode D6 and resistance R3
End, the other end of relay K6 coil are separately connected the collector of triode Q6 and the anode of diode D6, the hair of triode Q6
Emitter grounding, the base stage of triode Q6 are separately connected one end of resistance R11 and the anode of voltage-stabiliser tube DO1, the cathode of voltage-stabiliser tube DO1
It is separately connected the other end of resistance R3 and one end of capacitor C1, the other end of capacitor C1 and the other end of resistance R11 are grounded, after
One end of the contact electric appliance K6 connects the port V0, and the other end of the contact relay K6 connects voltage regulator circuit by the port V1.
8. the wireless polarity test device of a kind of mutual inductor according to claim 5, characterized in that the current output circuit
Including A phase current output circuit, B phase current output circuit and C phase current output circuit, the A phase current output circuit includes
The D0 pin of one end connection decoding chip of resistance R5, the resistance R5, the other end of resistance R5 are separately connected the one of resistance R6
The base stage at end and triode Q3, the other end of resistance R6 and the emitter of triode Q3 are grounded, the collector point of triode Q3
Not Lian Jie one end of relay K3 coil and the anode of diode D3, the other end of relay K3 coil and the cathode of diode D3
It is all connected with power supply VCC, one end of the contact relay K3 connects current regulating circuit, and the other end connects the port IA；
The B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of the resistance R7, the other end
It is separately connected one end of resistance R8 and the base stage of triode Q4, the other end of resistance R8 and the emitter of triode Q4 are grounded,
The collector of triode Q4 is separately connected one end of relay K4 coil and the anode of diode D4, relay K4 coil it is another
The cathode of end and diode D4 are all connected with power supply VCC, and one end of the contact relay K4 connects current regulating circuit, other end connection
The port IB；
The C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of the resistance R9, the other end
It is separately connected one end of resistance R10 and the base stage of triode Q5, the other end of resistance R10 and the emitter of triode Q5 connect
Ground, the collector of triode Q5 are separately connected one end of relay K5 coil and the anode of diode D5, relay K5 coil
The cathode of the other end and diode D5 are all connected with power supply VCC, and one end of the contact relay K5 connects current regulating circuit, the other end
Connect the port IC.
9. the wireless polarity test device of a kind of mutual inductor according to claim 1-8, characterized in that the test
Device further includes wrist strap, pedestal, the first rotating part and the second rotating part, and the pedestal is fixedly connected on wrist strap, sets on pedestal
Card slot, the buckle that setting is cooperatively connected with card slot on the first rotating part are set, first rotating part is erected by being buckled in card slot
Direct rotary turns, and second rotating part is fixedly connected with test equipment, and the second rotating part and the first rotating part are rotated by screw rod and connected
It connects.
10. a kind of wireless polarity test method of mutual inductor is based on the described in any item test devices of claim 1-9, feature
Be, the test method the following steps are included:
Test equipment and main equipment are connected respectively to mutual inductor secondary side and mutual inductor primary side；
At test equipment end by switch control, selection test information, and the test information is radioed into main equipment；
Main equipment is exported according to the test information selection to the electric signal of mutual inductor primary side；
The induced current for measuring mutual inductor secondary side, judges mutual inductor polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973530.2A CN108957218A (en) | 2018-08-24 | 2018-08-24 | A kind of mutual inductor is wireless polarity test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973530.2A CN108957218A (en) | 2018-08-24 | 2018-08-24 | A kind of mutual inductor is wireless polarity test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108957218A true CN108957218A (en) | 2018-12-07 |
Family
ID=64473140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810973530.2A Pending CN108957218A (en) | 2018-08-24 | 2018-08-24 | A kind of mutual inductor is wireless polarity test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957218A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
| CN110596522A (en) * | 2019-11-06 | 2019-12-20 | 国网新疆电力有限公司阿克苏供电公司 | Portable wireless current transformer polarity testing device |
| CN110988776A (en) * | 2019-11-25 | 2020-04-10 | 国网山东省电力公司潍坊供电公司 | Device for detecting polarity of current transformer in small-current grounding line selection device |
| CN112684381A (en) * | 2020-12-03 | 2021-04-20 | 广东电网有限责任公司中山供电局 | CT polarity tester of hand-held type wireless transmission sampling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023420A (en) * | 2015-08-10 | 2015-11-04 | 芜湖瑞泰精密机械有限公司 | Automatic remote control switch control system |
| CN105738757A (en) * | 2016-05-08 | 2016-07-06 | 国网山东省电力公司枣庄供电公司 | Tester for secondary polarity test of remotely-controllable mutual inductor |
| CN208872836U (en) * | 2018-08-24 | 2019-05-17 | 山东送变电工程有限公司 | Mutual inductor is wireless polarity tester |
-
2018
- 2018-08-24 CN CN201810973530.2A patent/CN108957218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023420A (en) * | 2015-08-10 | 2015-11-04 | 芜湖瑞泰精密机械有限公司 | Automatic remote control switch control system |
| CN105738757A (en) * | 2016-05-08 | 2016-07-06 | 国网山东省电力公司枣庄供电公司 | Tester for secondary polarity test of remotely-controllable mutual inductor |
| CN208872836U (en) * | 2018-08-24 | 2019-05-17 | 山东送变电工程有限公司 | Mutual inductor is wireless polarity tester |
Non-Patent Citations (1)
| Title |
|---|
| 矿务局工人业余编辑小组: "《矿用电动机保护装置——介绍几种矿用电机保护装置的结构和工作原理》", 《煤炭科学技术》, pages 1 - 6 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
| CN109752628B (en) * | 2019-01-15 | 2024-03-19 | 国网辽宁省电力有限公司鞍山供电公司 | Multifunctional mutual inductor polarity tester based on embedded RTU |
| CN110596522A (en) * | 2019-11-06 | 2019-12-20 | 国网新疆电力有限公司阿克苏供电公司 | Portable wireless current transformer polarity testing device |
| CN110988776A (en) * | 2019-11-25 | 2020-04-10 | 国网山东省电力公司潍坊供电公司 | Device for detecting polarity of current transformer in small-current grounding line selection device |
| CN110988776B (en) * | 2019-11-25 | 2022-07-01 | 国网山东省电力公司潍坊供电公司 | Device for detecting polarity of current transformer in small-current grounding line selection device |
| CN112684381A (en) * | 2020-12-03 | 2021-04-20 | 广东电网有限责任公司中山供电局 | CT polarity tester of hand-held type wireless transmission sampling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108957218A (en) | A kind of mutual inductor is wireless polarity test device and method | |
| CN203838286U (en) | Current transformer polarity tester | |
| CN201804072U (en) | Polarity test instrument for current transformer | |
| CN201662599U (en) | Photoelectric coupler detection device | |
| CN208872836U (en) | Mutual inductor is wireless polarity tester | |
| CN108896900A (en) | A kind of wireless charging system device for testing functions and test method | |
| CN204832411U (en) | Portable mutual inductor polarity tester | |
| CN205070830U (en) | Take crystal oscillator testing capabilities's adjustable D.C. regulated power supply | |
| CN105891664B (en) | Multi-analog loop polarity tester | |
| CN206450779U (en) | A kind of current transformer remote polarity tester | |
| CN209432989U (en) | A kind of auto parts and components conduction transmitting test sample | |
| CN203775050U (en) | Adjustable DC regulated power supply with Zener diode test function | |
| CN208026785U (en) | A kind of multimeter | |
| CN206270449U (en) | A kind of ac voltage withstanding testing stand | |
| CN103454612B (en) | A kind of ammeter electrifying test device | |
| CN107884653B (en) | Electricity inspection equipment for extensible module | |
| CN111398696A (en) | On-spot quick tester of current transformer transformation ratio | |
| CN205049681U (en) | Multicore cable insulation , short -circuit detection device | |
| US1949634A (en) | Radio testing apparatus | |
| CN211123224U (en) | Portable wireless current transformer polarity testing device | |
| CN207867709U (en) | Transformer substation remote-control exit tester based on wireless telecommunications | |
| CN210270068U (en) | Remote control loop tester for measurement and control device | |
| CN208125825U (en) | Wireless telemetering phase checking device | |
| CN209248002U (en) | A kind of LED light strip ageing tester | |
| CN203825093U (en) | Transformer ground resistance remote measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |