CN206270398U - A kind of voltage x current loop comprehensive tester - Google Patents
A kind of voltage x current loop comprehensive tester Download PDFInfo
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- CN206270398U CN206270398U CN201621405136.1U CN201621405136U CN206270398U CN 206270398 U CN206270398 U CN 206270398U CN 201621405136 U CN201621405136 U CN 201621405136U CN 206270398 U CN206270398 U CN 206270398U
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- 238000005259 measurement Methods 0.000 claims abstract description 73
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 230000003750 conditioning effect Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 12
- 240000007643 Phytolacca americana Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 6
- 208000037408 Device failure Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of voltage x current loop comprehensive tester, including：Voltage measurement circuit, is coupled to external secondary equipment voltage circuit；Current measurement circuit, is coupled to external secondary device current loop, the current value in detection external secondary device current loop；Control circuit, is coupled to voltage measurement circuit and current measurement circuit；Input conditioning circuit, for being coupled with external secondary circuitry by input circuit with the coupling of external secondary circuitry, the voltage measurement circuit and current measurement circuit.Voltage x current loop of the present utility model comprehensive tester, by the setting of voltage measurement circuit, current measurement circuit just can be in voltage circuit effectively to outside secondary device voltage and current loop in electric current carry out effective detection effect, and pass through to control the setting of circuit and input conditioning circuit, the effect of intellectualized detection can just be realized so that testing result more accurately uses enhanced convenience.
Description
Technical field
The utility model is related to a kind of testing equipment, more particularly to a kind of voltage x current loop integration test
Instrument.
Background technology
During the operation and maintenance of electric power network, it is often necessary to the voltage and current of the middle circuit of electric power network
Detected, thus be all come to the voltage and electricity in electric power network using some secondary devices when existing operation of power networks
Stream is detected, safeguarded and failture evacuation with to power network.
But during prolonged operation of power networks, the problem with regard to some secondary device failures occur so that two
Secondary device cannot be well to electric power network voltage x current have detected, thus be accomplished by carrying out the failure of secondary device
Exclude, be first to need to detect the voltage and current inside secondary device, in the prior art using right during exclusion
The instrument that voltage and current inside secondary device is detected is universal meter, and utilizes universal meter just relatively more numerous if detecting
It is trivial, it is necessary to constantly transfer the files to be detected, the detection efficiency of secondary device voltage x current greatly reduces.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of to secondary device voltage x current
Detection efficiency voltage x current loop comprehensive tester high.
To achieve the above object, the utility model provides following technical scheme：A kind of integration test of voltage x current loop
Instrument, including：
Voltage measurement circuit, is coupled to external secondary equipment voltage circuit, detects the electricity of external secondary equipment voltage circuit
Pressure value；
Current measurement circuit, is coupled to external secondary device current loop, the electricity in detection external secondary device current loop
Flow valuve；
Control circuit, is coupled to voltage measurement circuit and current measurement circuit, is surveyed with control voltage measuring loop and electric current
Amount loop and the break-make between the voltage circuit and current loop of external secondary equipment；
Input conditioning circuit, for being coupled with external power source, the voltage measurement circuit and current measurement circuit pass through
Input circuit and external power source are coupled, be used to adjust be input to voltage measurement circuit and current measurement circuit both end voltage it is poor.
Used as further improvement of the utility model, the input conditioning circuit includes：
Attaching plug XS, attaching plug XS are coupled with external power source loop；
Variometer TY, variometer TY has first end, the second end and adjustable side, and the first end is coupled with
Coupled with attaching plug XS after power switch S1 is coupled with after fuse FU0, second end is coupled to coupling after power switch S1
It is connected to attaching plug XS；
The primary side of transformer T1, transformer T1 is coupled with after relay KT the regulation for being coupled to variometer TY
End, secondary side is coupled with voltage measurement circuit, control coil and the control circuit coupling of the relay KT.It is new as this practicality
The further improvement of type, the control circuit includes：
AC/DC circuits, are coupled to the other ends of the fuse FU0 relative to power switch S1, will be passed through overcurrent fuse FU0
The defeated alternating current for coming is exported after being converted into direct current；
MCU microcontrollers, are coupled to AC/DC circuits, receive the direct current of AC/DC circuit outputs, have been also coupled to outputting cutting
Circuit is changed, voltage circuit detection pattern and amperometric detection mode are preset with it, the output switching circuit is used to be input into and switches
Signal changes the detection pattern of the inside of MCU microcontrollers in MCU microcontrollers, while MCU microcontrollers output driving is believed
Number；
Relay drive circuit, is coupled to the control coil of relay KT, MCU microcontrollers is further coupled to, for receiving
The drive signal of MCU microcontrollers output, and output current is driven according to drive signal.
Used as further improvement of the utility model, the voltage measurement circuit includes：
Control relay K1, control relay K1 include control coil and multiple switch, the control relay K1's
Control coil is coupled with relay drive circuit, the electric current of receiving relay drive circuit output, is acted according to electric current generation, institute
The one end for stating multiple switch is coupled to the secondary side of transformer T1, and the other end is coupled after being respectively coupled to fuse FU1~FU4
In external secondary equipment voltage circuit.
Voltmeter, one end of the voltmeter is coupled to the secondary side of transformer T1, and the other end is coupled with voltage measurement and cuts
Switch is changed, the voltage measurement switching switch has an input and multiple output ends, and the input is relative with voltmeter
In the other end coupling being connected with transformer T1, multiple output ends connect one to one with fuse FU1~FU4 respectively, described
A poke rod is provided between input and output end, after poke rod is stirred, input is connected with one of output end.
Used as further improvement of the utility model, the current measurement circuit includes：
The secondary side coupling of switch sections one end and transformer T1 of relay K2, relay K2, the other end and outside
Secondary device current loop is coupled, and control coil and the relay drive circuit of the relay K2 are coupled；
Current Voltage impedance meter, the Current Voltage impedance meter has detection input and power end, the detection input
Current loop with external secondary equipment is coupled, and the power end is coupled with transformer CT, the transformer CT and relay K2
Connection line mutual inductance between switch sections and external secondary device current loop, powers with to Current Voltage impedance meter.
The beneficial effects of the utility model, by the setting of voltage measurement circuit, it is possible to use voltage measurement circuit
The mode being connected with external secondary equipment voltage circuit, goes to detect the magnitude of voltage of external secondary equipment voltage circuit, so just
The effect detected to secondary device voltage circuit can be realized, and passes through the setting of current measurement circuit, it is possible to used
The mode that current measurement circuit is connected with external secondary device current loop, goes to detect the electric current of external secondary current loop
Value, just can so realize the effect detected to secondary device current loop, and pass through the setting of input conditioning circuit, just
Can adjust and just start to be input to the voltage difference of voltage measurement circuit and current measurement circuit two ends, it is to avoid voltage difference is excessive to be caused
The problem of the device failure in voltage measurement circuit and current measurement circuit, and pass through to control the setting of circuit, it is possible to effectively
Control now tester be detection voltage loop or detection current loop effect, it is possible to achieve intelligent measuring
Effect, whole measurement process is easy to operate, it is not necessary to transfer the files and wiring repeatedly, thus greatly improve detection efficiency.
Brief description of the drawings
Fig. 1 is the circuit diagram of voltage x current loop of the present utility model comprehensive tester.
Specific embodiment
The utility model is described in further detail below in conjunction with the embodiment given by accompanying drawing.
Shown in reference picture 1, a kind of voltage x current loop comprehensive tester of the present embodiment, it is characterised in that：Including：
Voltage measurement circuit 1, is coupled to external secondary equipment voltage circuit, detects the electricity of external secondary equipment voltage circuit
Pressure value；
Current measurement circuit 2, is coupled to external secondary device current loop, the electricity in detection external secondary device current loop
Flow valuve；
Control circuit 3, is coupled to voltage measurement circuit 1 and current measurement circuit 2, with control voltage measuring loop 1 and electricity
Break-make between flow measurement loop 2 and the voltage circuit and current loop of external secondary equipment；
Input conditioning circuit 4, for being coupled with external power source, the voltage measurement circuit 1 and current measurement circuit 2 lead to
Cross input circuit 4 to be coupled with external power source, be used to adjust the two ends for being input to voltage measurement circuit 1 and current measurement circuit 2 electricity
, when using comprehensive tester, with the voltage circuit of external secondary equipment be connected voltage measurement circuit 1 first by pressure difference,
Current measurement circuit 2 is connected with the current loop of external secondary equipment, then operation control circuit 3 connects voltage measurement circuit
1 or current measurement circuit 2, such as when voltage circuit is measured, operation control circuit 3 connect voltage measurement circuit 1 with
The voltage circuit of external secondary equipment, adjusts input conditioning circuit 4 and input conditioning circuit 4 is adjusted into minimum first before connection
The gear of voltage difference, the voltage circuit that such voltage measurement circuit 1 just can be effectively to secondary device is measured, and is being surveyed
When amount current loop, with it is above-mentioned similarly, unlike control the turn-on current measuring loop of circuit 3 and external secondary equipment
Current loop, so completes the detection of current loop, and by above-mentioned setting, comprehensive tester just can simply and easily detect electricity
Road and current loop are pushed back, middle by the way of universal meter compared to existing technology, detection gets up speed in hgher efficiency faster.
Used as a kind of improved specific embodiment, the input conditioning circuit 4 includes：
Attaching plug XS, attaching plug XS are coupled with external power source loop；
Variometer TY, variometer TY has first end, the second end and adjustable side, and the first end is coupled with
Coupled with attaching plug XS after power switch S1 is coupled with after fuse FU0, second end is coupled to coupling after power switch S1
It is connected to attaching plug XS；
The primary side of transformer T1, transformer T1 is coupled with after relay KT the regulation for being coupled to variometer TY
End, secondary side is coupled with voltage measurement circuit, and control coil and the control circuit 3 of the relay KT are coupled, and are inserted by power supply
Head XS can be good at being connected with external power source so that external power source is input into a burning voltage, Zhi Houtong to comprehensive tester
The effect of variometer TY and transformer T1 is crossed, a reference voltage is exported to voltage measurement circuit 1 and current measurement circuit 2
, due to extraneous power input is alternating current, thus using the setting of variometer TY, it is possible to effective regulation input
To the voltage of transformer T1 primary sides, then the voltage of transformer T1 primary sides is changed, so the voltage of its secondary side
Can be changed, thus so just can effectively realize changing the voltage at voltage measurement circuit 1 and the two ends of current measurement circuit 2
Poor effect, avoids the excessive caused voltage measurement circuit 1 of the voltage being input at the beginning and current measurement circuit 2 well
The problem that internal components burn.
Used as a kind of improved specific embodiment, the control circuit 3 includes：
AC/DC circuits 31, are coupled to the other ends of the fuse FU0 relative to power switch S1, will be through overcurrent fuse FU0
The alternating current for transmitting is exported after being converted into direct current；
MCU microcontrollers 32, are coupled to AC/DC circuits 31, receive the direct current of the output of AC/DC circuits 31, have been also coupled to
Output switching circuit 321, is preset with voltage circuit detection pattern and amperometric detection mode, the output switching circuit 321 in it
For being input into switching signal in MCU microcontrollers 32, change the detection pattern of the inside of MCU microcontrollers 32, while MCU is micro-
The output drive signal of controller 32；
Relay drive circuit 33, is coupled to the control coil of relay KT, is further coupled to MCU microcontrollers 32, is used for
The drive signal of the output of MCU microcontrollers 32 is received, and output current is driven according to drive signal, by AC/DC circuits 31
Set, it is possible to the alternating current that external power source is input into is converted into direct current and supplies electricity to MCU for controller 32 is powered, and pass through output
The setting of switching circuit 321, people can just give the input operation signal of MCU microcontrollers 32, be exported using MCU microcontrollers 32
Signal controls testing for comprehensive tester, thus the output switching circuit 321 of the present embodiment can be switch, button etc.,
Acted in switching using switch, can effectively realize the detection pattern of MCU microcontrollers 32 in voltage mode and current-mode
It is interior freely to change, and pass through the setting of relay drive circuit 33, just the signal that MCU microcontrollers 32 are exported can be converted into
Electric current carrys out control relay, so just can effectively realize the control action of control circuit 3.
Used as a kind of improved specific embodiment, the voltage measurement circuit 1 includes：
Control relay K1, control relay K1 include control coil and multiple switch, the control relay K1's
Control coil is coupled with relay drive circuit 33, the electric current of the output of receiving relay drive circuit 33, is produced according to electric current dynamic
Make, one end of the multiple switch is coupled to the secondary side of transformer T1, and the other end has been respectively coupled to fuse FU1~FU4
After be coupled to external secondary equipment voltage circuit.
Voltmeter 11, one end of the voltmeter 11 is coupled to the secondary side of transformer T1, and the other end is coupled with voltage survey
Amount switching switch 12, the voltage measurement switching switch 12 has an input and multiple output ends, the input and electricity
Pressure table 11 is corresponded with fuse FU1~FU4 respectively relative to the other end coupling being connected with transformer T1, multiple output ends
Connection, is provided with a poke rod between the input and output end, after poke rod is stirred, by input and one of output
End connection, by the setting of voltmeter 11, it is possible to realize the effect of detection external secondary equipment voltage circuit, and pass through relay
The setting of device K1 and voltage measurement switching switch 12, can connect the voltage do not gone the same way in voltmeter, realize polyphase circuit
The Detection results of voltage, can detect the voltage of four circuitry phases, respectively A phase, B phase, C phase and L phases in the present embodiment, realize
The effect of voltage in one detection polyphase circuit of voltmeter 11, and pass through the setting of fuse FU1~FU4, can further protect
Shield voltmeter 11.
Used as a kind of improved specific embodiment, the current measurement circuit 2 includes：
The secondary side coupling of switch sections one end and transformer T1 of relay K2, relay K2, the other end and outside
Secondary device current loop is coupled, and control coil and the relay drive circuit 33 of the relay K2 are coupled；
Current Voltage impedance meter 21, the Current Voltage impedance meter 21 has detection input and power end, and the detection is defeated
Enter end to be coupled with the current loop of external secondary equipment, the power end is coupled with transformer CT, the transformer CT and relay
Connection line mutual inductance between device K2 switch sections and external secondary device current loop, supplies with to Current Voltage impedance meter 21
Whether electricity, by the setting of relay K2, just can realize in control electric current voltage impedance table by the effect of electric current, so real
The effect whether the control control tester of circuit 3 detects the current loop of secondary device is showed.
In sum, the voltage x current loop comprehensive tester of the present embodiment, can be with by the setting of voltage measurement circuit 1
The voltage circuit of secondary device is measured, the current loop of secondary device can be measured by the setting of current measurement circuit 2, and led to
The setting of input conditioning circuit 4 is crossed, voltage measurement circuit 1 and the both end voltage of current measurement circuit 2 difference can be avoided too high to cause
The problem damaged of internal components, and pass through to control the setting of circuit 3, it is possible to achieve intellectualized detection so that comprehensive tester
It is in hgher efficiency, use enhanced convenience.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of voltage x current loop comprehensive tester, it is characterised in that：Including：
Voltage measurement circuit (1), is coupled to external secondary equipment voltage circuit, detects the voltage of external secondary equipment voltage circuit
Value；
Current measurement circuit (2), is coupled to external secondary device current loop, the electric current in detection external secondary device current loop
Value；
Control circuit (3), is coupled to voltage measurement circuit (1) and current measurement circuit (2), with control voltage measuring loop (1)
And the break-make between current measurement circuit (2) and the voltage circuit and current loop of external secondary equipment；
Input conditioning circuit (4), for being coupled with external power source, the voltage measurement circuit (1) and current measurement circuit (2) are
Coupled by input circuit (4) and external power source, be used to adjust and be input to voltage measurement circuit (1) and current measurement circuit (2)
Both end voltage it is poor.
2. voltage x current loop according to claim 1 comprehensive tester, it is characterised in that：The input conditioning circuit
(4) include：
Attaching plug XS, attaching plug XS are coupled with external power source loop；
Variometer TY, variometer TY has first end, the second end and adjustable side, and the first end is coupled with fusing
Coupled with attaching plug XS after power switch S1 is coupled with after device FU0, second end is coupled to after being coupled to power switch S1
Attaching plug XS；
The primary side of transformer T1, transformer T1 is coupled with after relay KT the adjustable side for being coupled to variometer TY, two
Secondary side couples with voltage measurement circuit, control coil and control circuit (3) coupling of the relay KT.
3. voltage x current loop according to claim 2 comprehensive tester, it is characterised in that：Control circuit (3) bag
Include：
AC/DC circuits (31), are coupled to the other ends of the fuse FU0 relative to power switch S1, will be passed through overcurrent fuse FU0
The defeated alternating current for coming is exported after being converted into direct current；
MCU microcontrollers (32), are coupled to AC/DC circuits (31), receive the direct current of AC/DC circuits (31) outputs, are also coupled to
There is output switching circuit (321), voltage circuit detection pattern and amperometric detection mode, the output switching circuit are preset with it
(321) for being input into, switching signal is interior to MCU microcontrollers (32), changes the detection pattern of the inside of MCU microcontrollers (32),
While MCU microcontrollers (32) output drive signal；
Relay drive circuit (33), is coupled to the control coil of relay KT, is further coupled to MCU microcontrollers (32), is used for
The drive signal of MCU microcontrollers (32) outputs is received, and output current is driven according to drive signal.
4. voltage x current loop according to claim 3 comprehensive tester, it is characterised in that：The voltage measurement circuit
(1) include：
Control relay K1, control relay K1 include control coil and multiple switch, the control of the control relay K1
Coil is coupled with relay drive circuit (33), the electric current of receiving relay drive circuit (33) output, is produced according to electric current dynamic
Make, one end of the multiple switch is coupled to the secondary side of transformer T1, and the other end has been respectively coupled to fuse FU1~FU4
After be coupled to external secondary equipment voltage circuit;
Voltmeter (11), one end of the voltmeter (11) is coupled to the secondary side of transformer T1, and the other end is coupled with voltage survey
Amount switching switch (12), voltage measurement switching switch (12) is with an input and multiple output ends, the input
With voltmeter (11) relative to be connected with transformer T1 the other end coupling, multiple output ends respectively with fuse FU1~FU4 mono-
One correspondence connection, is provided with a poke rod, after poke rod is stirred, by input and wherein between the input and output end
Individual output end connection.
5. the voltage x current loop comprehensive tester according to claim 3 or 4, it is characterised in that：The current measurement is returned
Road (2) includes：
The secondary side coupling of switch sections one end and transformer T1 of relay K2, relay K2, the other end and external secondary
Device current loop is coupled, and control coil and the relay drive circuit (33) of the relay K2 are coupled；
Current Voltage impedance meter (21), the Current Voltage impedance meter (21) is with detection input and power end, and the detection is defeated
Enter end to be coupled with the current loop of external secondary equipment, the power end is coupled with transformer CT, the transformer CT and relay
Connection line mutual inductance between device K2 switch sections and external secondary device current loop, supplies with to Current Voltage impedance meter (21)
Electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621405136.1U CN206270398U (en) | 2016-12-20 | 2016-12-20 | A kind of voltage x current loop comprehensive tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621405136.1U CN206270398U (en) | 2016-12-20 | 2016-12-20 | A kind of voltage x current loop comprehensive tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270398U true CN206270398U (en) | 2017-06-20 |
Family
ID=59047302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621405136.1U Expired - Fee Related CN206270398U (en) | 2016-12-20 | 2016-12-20 | A kind of voltage x current loop comprehensive tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206270398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444651A (en) * | 2018-12-29 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of monitoring method and system for secondary circuit |
-
2016
- 2016-12-20 CN CN201621405136.1U patent/CN206270398U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444651A (en) * | 2018-12-29 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of monitoring method and system for secondary circuit |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20181220 |