CN208109940U - The separate switching device of relative medium loss and the test of capacitance ratio remotely controlled - Google Patents
The separate switching device of relative medium loss and the test of capacitance ratio remotely controlled Download PDFInfo
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- CN208109940U CN208109940U CN201820548894.1U CN201820548894U CN208109940U CN 208109940 U CN208109940 U CN 208109940U CN 201820548894 U CN201820548894 U CN 201820548894U CN 208109940 U CN208109940 U CN 208109940U
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Abstract
The utility model discloses the separate switching devices of relative medium loss and the test of capacitance ratio remotely controlled, and are related to electrical technology field；It is made of gating circuit and remote controler；The gating circuit is made of banked relay circuit and relay contact circuit；The banked relay circuit includes wireless communication module U1, controller IC 1, switching circuit U2, first to third relay KMA-KMC, double-pole single throw K0 and DC power supply DC；It realizes easy to use by technologies such as electronic controls, and testing efficiency is high, and equipment attrition is small, saves labour turnover.
Description
Technical field
It is tested the utility model relates to electrical technology field more particularly to a kind of loss of relative medium and capacitance ratio
The separate switching device remotely controlled.
Background technique
For capacitive power equipments such as current transformer, capacitance type potential transformer, condenser bushing, coupling capacitors
For, the insulation status of equipment directly determines the operating status of equipment.In work usually, pass through the medium of measuring device
Parameter and capacitance is lost, to analyze and determine situations such as equipment is with the presence or absence of aging, dampness.
In recent years, in the case where equipment does not have a power failure, by relative medium loss and the live detection of capacitance ratio, come
The insulation status of consersion unit.The method test result accuracy is higher, at the same not by mutual inductor angular difference in the absolute method of measurement and
The influence of secondary load is a kind of measurement method being widely used at present.
Although this measurement method has many advantages, such as, and technique is generally carried out in power equipment test,
Some inconveniences can be encountered in test process.Because relative medium undermines capacitance ratio, test needs to choose reference device,
To measure equipment under test.Such as using 211 spacing current mutual inductors as reference device, 241 interval of test, 243 intervals, 245 intervals
Current transformer, it is necessary first to 211 interval A phase current mutual inductors and 241 interval A phase current mutual inductors are connected, after being completed,
211 interval B phase current mutual inductors and 241 interval B phase current mutual inductors are reconnected, after being completed, are next reconnected between 211
Every C phase current mutual inductor and 241 interval C phase current mutual inductors, after being completed, 211 interval A phase current mutual inductances are then reconnected
Device and 243 interval A phase current mutual inductors, successively disconnect line ....After selection of equipment, in order to which data are analyzed and are tested
It for convenience, tends not to change, it is therefore desirable to place staff and come between A, B, C three-phase at reference device always
Return plug aviation plug.In this way, not only wasting manpower, equipment attrition also is caused to aviation socket.
Utility model content
It is tested the technical problem to be solved by the utility model is to provide a kind of loss of relative medium and capacitance ratio
The separate switching device remotely controlled realizes easy to use, testing efficiency height, equipment mill by technologies such as electronic controls
It damages small, saves labour turnover.
In order to solve the above technical problems, technical solution adopted in the utility model is：By gating circuit and remote controler group
At；The gating circuit is made of banked relay circuit and relay contact circuit；The banked relay circuit includes nothing
Line communication module U1, controller IC 1, switching circuit U2, first to third relay KMA-KMC, double-pole single throw K0 and straight
Galvanic electricity source DC；The remote controler and wireless communication module U1 are wirelessly connected, and the output of the wireless communication module U1 terminates control
The input terminal of device IC1, the input terminal of the output termination switching circuit U2 of the controller IC 1, described first to third relay
The different output ends of a termination switching circuit U2 of KMA~KMC, the cathode of another termination DC power supply DC；The channel radio
The power end of letter module U1, controller IC 1 and switching circuit U2 connect DC power supply DC's through the contact 4,2 of double-pole single throw K0
Anode, the cathode of ground connection termination DC power supply DC；
The relay contact circuit by threephase current transformer A phase to C phase sampling unit side A phase~C phase connection
Terminal AP~CP, first to first normally opened contact KMA-1~KMC-1 of third relay KMA~KMC and connecing for test equipment side
The first of line terminals S composition to third branch forms, and described first to third branch structure is identical, and the of the first branch
A termination A of the first normally opened contact KMA-1 of one relay KMA connects line terminals AP, the wiring of another termination test equipment side
Terminal S.
A further technical solution lies in：The banked relay circuit further includes indicator light circuit, the indicator light electricity
Routing power indicator light circuit and three tunnels sampling indicator light circuit composition；The power indicator circuit is referred to by resistance R0 and power supply
Show that lamp D0 is formed, the contact 3,1 through double-pole single throw K0 meets DC power supply DC after resistance R0 connects with power supply indicator D0；Institute
The structure for stating three tunnels sampling indicator light circuit is identical, wherein the first sampling indicator light circuit is by first resistor R1, the first indicator light
The second normally opened contact KMA-2 of D1 and the first relay KMA is formed, first resistor R1, the first indicator light D1 and the first relay
The contact 3,1 through double-pole single throw K0 meets DC power supply DC after the second normally opened contact KMA-2 series connection of KMA.
A further technical solution lies in：There are four key, the structures of four keys for setting on the remote controler
It is identical, wherein the first key is wirelessly connected by remote controler and controller IC 1.
Generated beneficial effect is by adopting the above technical scheme：
First, the technical solution is easy to use, and testing efficiency is high, and equipment attrition is small, saves labour turnover.
Second, which can be clearly seen the state that power supply is switched on or switched off by power supply indicator D0, work as phase
Not Qie Huan after, the first indicator light D1~third indicator light D3 can clearly prompt currently to connect it is separate, using more convenient.
Three relays of third, the technical solution, the device operate independent from one another, and avoid the occurrence of two-phase or three-phase simultaneously
The case where connection, use is safer, and test data is more acurrate.
Detailed description of the invention
Fig. 1 is the schematic diagram of banked relay circuit in the utility model；
Fig. 2 is the schematic diagram of relay contact circuit in the utility model；
Fig. 3 is the panel figure of the utility model；
Fig. 4 is the use state diagram of the utility model.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
As shown in Figure 1-Figure 3, the utility model discloses a kind of relative medium loss and capacitance ratio test it is long-range
The separate switching device of control comprising with lower component：Cross box and the panel for being mounted on operation at the top of cross box, Yi Jian
Panel-mounted double-pole single throw K0, power supply indicator D0, the first indicator light D1~third indicator light D3, A connect line end
Sub- AP, B line terminals BP, C that connect connect line terminals CP and connecting terminal S, further include that the 12V being mounted on inside cross box turns 5V electricity
Source module, the DC power supply DC of 5V, wireless communication module U1, controller IC 1, switching circuit U2, the first relay KMA~third
Relay KMC, source resistance R0 and first resistor R1~3rd resistor R3, further include be placed on adapter outside cross box and
Remote controler, the adapter turn 5V power module plug-in with 12V and are electrically connected, and the 12V turns 5V power module and the direct current of 5V
Power supply DC electrical connection.
Gating circuit and remote controler two parts are divided by the separate switching device that above-mentioned component forms；The gating circuit
It is made of banked relay circuit and relay contact circuit；The banked relay circuit includes wireless communication module U1, control
Device IC1 processed, switching circuit U2, first to third relay KMA-KMC, double-pole single throw K0 and DC power supply DC；It is described distant
It controls device and wireless communication module U1 is wirelessly connected, the input terminal of the output termination controller IC 1 of the wireless communication module U1, institute
State the input terminal of the output termination switching circuit U2 of controller IC 1, described first to a third relay KMA~KMC termination
The different output ends of switching circuit U2, the cathode of another termination DC power supply DC；The wireless communication module U1, controller
The power end of IC1 and switching circuit U2 connect the anode of DC power supply DC, ground connection termination through the contact 4,2 of double-pole single throw K0
The cathode of DC power supply DC；
The relay contact circuit by threephase current transformer A phase to C phase sampling unit side A phase~C phase connection
Terminal AP~CP, first to first normally opened contact KMA-1~KMC-1 of third relay KMA~KMC and connecing for test equipment side
The first of line terminals S composition to third branch forms, and described first to third branch structure is identical, and the of the first branch
A termination A of the first normally opened contact KMA-1 of one relay KMA connects line terminals AP, the wiring of another termination test equipment side
Terminal S.
The banked relay circuit further includes indicator light circuit, and the indicator light circuit is by power indicator circuit and three
Road samples indicator light circuit composition；The power indicator circuit is made of resistance R0 and power supply indicator D0, resistance R0 and electricity
The contact 3,1 through double-pole single throw K0 meets DC power supply DC after source indicator light D0 series connection；Three tunnel samples indicator light circuit
Structure it is identical, wherein the first sampling indicator light circuit is by the of first resistor R1, the first indicator light D1 and the first relay KMA
Two normally opened contact KMA-2 composition, the second normally opened contact KMA-2 of first resistor R1, the first indicator light D1 and the first relay KMA
Contact 3,1 after series connection through double-pole single throw K0 meets DC power supply DC.
First key~the 4th key totally four keys, the structure phase of four keys are installed on the remote controler
Together, wherein the first key is wirelessly connected by remote controler and controller IC 1.
Wherein, the DC power supply DC of 5V is battery, and 220V alternating current is converted into 12V DC electricity, 12V DC through adapter
Electricity turns 5V power module through 12V and is converted into 5V direct current, and 5V direct current charges a battery；The model of controller IC 1
Stc89s52, remote controler, wireless communication module U1 and switching circuit U2 are that details are not described herein for the prior art.
Prepare before detection：
As shown in figure 4, the separate switching remotely controlled using two sets of relative medium losses and the test of capacitance ratio fills
It sets, the connection of two sets of separate switching devices is identical, and wherein the separate switching device of first set connects reference device, second set of separate switching
Device connects equipment under test, and the mode of connection of the separate switching device of first set is as follows：
The signal of the A phase end shield of reference device is introduced into the first A phase sampling unit, by the output of the first A phase sampling unit
End is connect with the A line terminals AP that connects；B-C phase connection mode is identical.The connecting terminal S of test equipment side connects test equipment.
Detecting step：
S1 booting
The double-pole single throw K0, the power supply indicator D0 of two sets of separate switching devices for being closed two sets of separate switching devices are equal
It is bright.
S2 detection
S201 detects relative medium loss and the capacitance ratio of current transformer A phase
The first key on remote controler is pressed, the first indicator light D1 of two sets of switching devices is bright；
The signal of the A phase end shield of reference device successively pass through the first A phase sampling unit, the first A phase sampling unit side
Connect the first connecting terminal S of line terminals AP and test equipment side of one A enters test equipment；The A phase end shield of equipment under test ' letter
Number successively connect line terminals AP ' and test equipment side by the 2nd A of the 2nd A phase sampling unit, the 2nd A phase sampling unit side
Second connecting terminal S ' enters test equipment；
Test equipment detection obtains relative medium loss and the capacitance ratio of current transformer A phase.
S202 detects relative medium loss and the capacitance ratio of current transformer B phase
The second key on remote controler is pressed, it is identical as the detection mode of current transformer A phase.
S203 detects relative medium loss and the capacitance ratio of current transformer C phase
The third key on remote controler is pressed, it is identical as the detection mode of current transformer A phase.
When pressing four key on remote controler, three relays are disconnected.
Working principle：
When not working, three relays are all disconnected, and no signal enters in test equipment.
When A phase is tested, the first key passes through remote controler wireless notification controller IC 1,1 control switch circuit U 2 of controller IC
The output of output end all the way connect the first relay KMA, the first normally opened contact KMA-1 of the first relay KMA and second is normal
It opens contact KMA-2 to be attracted, the second relay KMB and third relay KMC disconnect, and A phase signals enter in test equipment.
When B phase is tested, the second relay KMB is connected, and the first relay KMA and third relay KMC disconnect, and B believes
Number enter test equipment in.
When C phase is tested, third relay KMC is connected, and the first relay KMA and the second relay KMB disconnect, and C believes
Number enter test equipment in.
During the test, the first relay KMA~third relay KMC is operated independent from one another, i.e., controller IC 1 is every
One moment only controlled the connection of a relay in the first relay KMA~third relay KMC, avoided to occur so wrong
Error signal.
The advantages of technical solution, is：
First, remote controler and wireless communication module U1 can real-time reception is remotely controlled in 500M signal, use is very square
Just.
Second, which has the function of separate instruction, after separate switching, the first indicator light D1~third indicator light D3 energy
Enough clear prompts currently connect it is separate, it is very easy to use.
Third, the device have the function of that power supply is switched on or switched off instruction, and power supply indicator D0 can be clearly seen power supply and connect
The state that on-off is opened, it is very easy to use.
4th, three relays of the device operate independent from one another, and avoid the occurrence of two-phase or the case where three-phase is also turned on,
Using very safe, test data is very accurate.
5th, which can use built-in DC power supply DC, can also be suitble to make for a long time with external 220V AC power source
Industry uses, very easy to use.
6th, stable and reliable for performance, avoiding aviation plug, plug bring instrument is lost back and forth, and aviation plug is avoided to exist
The unstable contact of bring during multiple plug.
7th, cost of labor is saved, is at least saved in this work and comes one manually.
Claims (3)
1. the separate switching device of a kind of relative medium loss and the test of capacitance ratio remotely controlled, it is characterised in that：By
Gating circuit and remote controler composition；The gating circuit is made of banked relay circuit and relay contact circuit；It is described distant
Control relay circuit include wireless communication module U1, controller IC 1, switching circuit U2, first to third relay KMA-KMC,
Double-pole single throw K0 and DC power supply DC；The remote controler and wireless communication module U1 are wirelessly connected, the radio communication mold
The input terminal of the output termination controller IC 1 of block U1, the input terminal of the output termination switching circuit U2 of the controller IC 1, institute
State the different output ends of first to a third relay KMA~KMC termination switching circuit U2, another termination DC power supply DC
Cathode；The power end of the wireless communication module U1, controller IC 1 and switching circuit U2 are through the contact of double-pole single throw K0
4,2 anode for meeting DC power supply DC, the cathode of ground connection termination DC power supply DC；
The relay contact circuit is connected line terminals by A phase~C of A phase to the C phase sampling unit side of threephase current transformer
AP~CP, first to third relay KMA~KMC the first normally opened contact KMA-1~KMC-1 and test equipment side terminals
The first of sub- S composition to third branch forms, and described first to third branch structure is identical, the first branch first after
A termination A of the first normally opened contact KMA-1 of electric appliance KMA connects line terminals AP, the connecting terminal of another termination test equipment side
S。
2. the separate switching dress of relative medium loss according to claim 1 and the test of capacitance ratio remotely controlled
It sets, it is characterised in that：The banked relay circuit further includes indicator light circuit, and the indicator light circuit is by power supply indicator electricity
Road and three tunnels sampling indicator light circuit composition；The power indicator circuit is made of resistance R0 and power supply indicator D0, resistance
The contact 3,1 through double-pole single throw K0 meets DC power supply DC after R0 connects with power supply indicator D0；The three tunnels sampling instruction
The structure of circuit for lamp is identical, wherein the first sampling indicator light circuit is by first resistor R1, the first indicator light D1 and the first relay
The second normally opened contact KMA-2 of KMA is formed, the second normally opened touching of first resistor R1, the first indicator light D1 and the first relay KMA
The contact 3,1 through double-pole single throw K0 meets DC power supply DC after point KMA-2 series connection.
3. the separate switching of relative medium loss according to claim 1 or 2 and the test of capacitance ratio remotely controlled
Device, it is characterised in that：There are four keys for setting on the remote controler, and the structure of four keys is identical, wherein first
Key is wirelessly connected by remote controler and controller IC 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820548894.1U CN208109940U (en) | 2018-04-18 | 2018-04-18 | The separate switching device of relative medium loss and the test of capacitance ratio remotely controlled |
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| CN201820548894.1U CN208109940U (en) | 2018-04-18 | 2018-04-18 | The separate switching device of relative medium loss and the test of capacitance ratio remotely controlled |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459208A (en) * | 2018-04-18 | 2018-08-28 | 国家电网公司 | Relative medium is lost and the separate switching device of the remote control of capacitance ratio test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459208A (en) * | 2018-04-18 | 2018-08-28 | 国家电网公司 | Relative medium is lost and the separate switching device of the remote control of capacitance ratio test |
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