CN207730897U - Relay checking instrument free of demolition based on arm chips - Google Patents
Relay checking instrument free of demolition based on arm chips Download PDFInfo
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- CN207730897U CN207730897U CN201721807961.9U CN201721807961U CN207730897U CN 207730897 U CN207730897 U CN 207730897U CN 201721807961 U CN201721807961 U CN 201721807961U CN 207730897 U CN207730897 U CN 207730897U
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- verification module
- voltage
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Abstract
Relay checking instrument free of demolition based on arm chips,By DC partial voltage correction verification module,Micro-control unit,Display screen sequentially connects composition,By p-wire by measured relay successively with the live end of relay checking instrument (1),(2) mouth is connected,By the actuating of relay input terminal (3) of the normally opened output contact of measured relay and relay checking instrument,(4) mouth is connected,The 200K of DC partial voltage correction verification module and 36 Ω sampling resistors are respectively connected to difference sampling end ADC0,ADC1 and ADC2,ADC3,Micro controller unit samples indirect operation voltage,Indirect action current,Action of relay contact situation,The startup power of relay can be obtained by data processing according to these values,Start voltage,Return voltage,Rated power,Actuation time,Numerical value is arranged to provide verification conclusion further according to regulation is counter,By being sent on serial communication to display screen,Display screen cycle shows result.
Description
Technical field
The utility model is related to can be carried out in situ all kinds of relays in relay installation place in a kind of test electric system
The device of verification belongs to Relay Protection Technology in Power System field.
Background technology
During traditional substation's relay checking, when needing the operation voltage to relay, operating power and action
Between verified, existing method is to remove relay wiring, verified with tester, in relay especially mechanism case
Relay has many wiring, removes narrow space, time-consuming and laborious, accidentally touch, the risk of mis-wired it is larger.There is an urgent need for a kind of systems to make
Case above is improved.Relay checking system free of demolition based on arm chips can be carried out in situ all kinds of relay checkings,
Can verify relay startup power, start voltage, return voltage, rated power, actuation time, according to regulation it is counter arrange numerical value to
Go out to verify conclusion.The verification requirement of all kinds of relays is fully met, it is time saving and energy saving, risk is reduced, working efficiency is improved.
Invention content
The utility model is precisely in order to what is overcome above-mentioned the deficiencies in the prior art and provide a kind of exempts to tear open based on arm chips
Unload relay checking instrument.
The utility model is achieved by the following technical solution：
Relay checking instrument free of demolition based on arm chips, including one by DC partial voltage correction verification module, microcontroller list
Member, display sequentially connect the relay checking instrument of composition；Wherein, p-wire by measured relay successively with relay checking instrument
Pressurization port be connected, by the actuating of relay input port of the normally opened output contact of measured relay and relay checking instrument
It is connected；DC partial voltage correction verification module is constituted pressure divider circuit and realized using the resistance of 20M and 200K switchs to+220V forceful electric power voltages
+ 2.2V light current for difference sampling end ADC0, ADC1 acquire, sample definition be indirect operation voltage v0, relay JDQ to be verified and
36 Ω resistance connect pressure divider circuit through difference sampling end ADC2, ADC3 acquisition, and sample definition is indirect action current i0；Microcontroller
Unit v0, i0 based on acquisition, the operation voltage obtained further according to DC partial voltage correction verification module circuit characteristic and parameter and action
Current formula V0=((v0*101)/1000)-(i0/1000), I0=i0/36, then the action electricity by arm chips calculating relay
Pressure and action current further calculate the startup power of relay by the two data, start voltage, return voltage, specified work(
Rate, actuation time arrange numerical value to provide verification conclusion according to regulation is counter, and the anti-requirement arranged of result and regulation is compared, judges that it is
No qualification；The man-machine interface that display is constituted can show real-time sampling data, verification conclusion, function selection prompt, realize man-machine
Dialogue, it is the liquid crystal display of 128*64 that liquid crystal display device uses serial communication, display with micro-control unit；Relay school
It tests function and method divides two major parts, first piece, the startup power of relay can be verified, start voltage, return voltage；Second piece,
Verify rated power, the actuation time of relay.Then, the anti-requirement arranged of result and regulation is compared, judges whether it is qualified,
Regulation countermeasure exit relay starts voltage the 55%~70% of rated voltage, and starting power is not less than 5W, ontology three
The mutually inconsistent time relay is adjusted as 2s.
The utility model is complicated in small space, wiring for all kinds of time relays, exit relay, intermediate relay
Dismounting etc. it is time-consuming and laborious, accidentally touch with the risk of mis-wired it is larger in the case of, be carried out in situ relay startup power, start electricity
The test and calibration of the parameters such as pressure, return voltage, rated power, actuation time, make it meet regulatory requirements.
Relay checking instrument free of demolition based on arm chips is used for free of demolition with regard to all kinds of relays in transformer station secondary system
In the case of verified, be reliable, safe, test and calibration can be rapidly completed.
Relay checking instrument free of demolition based on arm chips is mainly by data acquisition module, two big mould of data processing module
Block forms.Data acquisition module mainly realizes the acquisition of two aspect information：Indirect operation voltage that embedded system samples,
Indirect action current, action of relay contact situation.The startup work(of relay can be obtained by data processing according to these values
Rate starts voltage, return voltage, rated power, actuation time.
Relay checking instrument free of demolition based on arm chips is to be based on Luminary Micro LM3S1138 microcontrollers
Embedded system can be developed using C language using IAR Integrated Development Environment.
Embedded system port definition：
Serial ports is shown：PA0 RS pieces select
PA1 R/W serial data inputs
PA2 E serial synchronization clocks
PA3 PSB serial parallel input selections
PA4 RST LCD reset
Open incoming interface：PD1 KEY1 initiation value verifies select button
PG5 KEY2 rated values verify select button
PG2 actuating of relay contact input interfaces
Sampling Interface：ADC0, ADC1 difference Sampling Interface v0, sampling action voltage
ADC2, ADC3 difference Sampling Interface i0, sampling action electric current
Such as the programmed logic block diagram that Fig. 1 is micro-control unit.
Feasibility analysis：
Relay checking instrument free of demolition based on arm chips using 20M and 200K resistance constitute pressure divider circuit realize will+
220V forceful electric power voltages switch to+2.2V light current and are acquired for difference sampling end ADC0, ADC1, dividing ratios P=0.99%, arm chip
Sampling range is 3.3V, 10 powers that sampling precision is 2.Division module output voltage maximum 2.2V, the model in accuracy rating
In enclosing.The specified operation voltage of relay is 220V, and the actuating of relay voltage accuracy of device output reaches 0.2V, and error is less than
1/1000。
Relay checking instrument free of demolition based on arm chips uses relay JDQ to be verified and 36 Ω resistance series connection partial pressure
Circuit is acquired through difference sampling end ADC2, ADC3, measures indirect action current, and range is sampled according to Ohm's law and arm chips
3.3V, the measurable action current of the method reach 91.7mA, for lowest starting voltage starting power reach 11W, be more than regulation
It is required that 2 times of 5W, this to design the measurement request for meeting all kinds of relays, current sample precision reaches 0.09mA, and error is small
In 1/1000.
The micro-control unit of relay checking instrument free of demolition based on arm chips uses 6M crystalline substance battle arrays, primary complete cycle
Sampling period needs 180 Machine cycles, amounts to 0.36ms, and sampling time error is not more than 0.4ms.
It is included that device can be used in the voltage for+220V that relay checking instrument free of demolition based on arm chips is added to relay
Inverter output voltage source, the DC power supply of relay installation place itself on the spot can also be used.
The utility model has the advantages that：
1, parameters, the utility model can be measured and calibrated rapidly without dismounting for all kinds of relays
A kind of effective method is had found, it can be to all kinds of time relays, exit relay, intermediate relay, in narrow sky
Between, the complicated situation of wiring, on the spot quickly and accurately in the case of carry out the startup power of relay, start voltage, return to electricity
The test and calibration of the parameters such as pressure, rated power, actuation time, make it meet regulatory requirements；
2, the utility model creation can be widely applied in electric system examination, regular inspection work, and whether busy relay is full
Sufficient regulation countermeasure can calibrate rapidly ungratified parameter.
Description of the drawings
Fig. 1 is the programmed logic block diagram of micro-control unit；
Fig. 2 is the system framework figure of the utility model；
Fig. 3 is the circuit diagram of the utility model；
Fig. 4 is intelligent relay protection outlet part of detecting program's source code figure；
Fig. 5 is to carry out the initialization of the checking procedure page and selection figure to certain jamproof high power time relay；
Fig. 6 is to carry out checking procedure starting value check plot to certain jamproof high power time relay；
Fig. 7 is to carry out checking procedure rated value check plot to certain jamproof high power time relay.
Specific implementation mode
The content of the utility model is described in further details below in conjunction with the accompanying drawings.
Relay checking instrument free of demolition based on arm chips, device include p-wire, DC partial voltage correction verification module, micro-control
Unit processed, display screen.By p-wire by measured relay successively with the live end of relay checking instrument 1,2 mouthful be connected, will
The normally opened output contact of measured relay is connected with 3,4 mouthfuls of the actuating of relay input terminal of relay checking instrument, DC partial voltage
The 200K of correction verification module and 36 Ω sampling resistors are respectively connected to difference sampling end ADC0, ADC1 and ADC2, ADC3, microcontroller list
Indirect operation voltage that member samples, indirect action current, action of relay contact situation, can pass through data according to these values
Processing obtains the startup power of relay, starts voltage, return voltage, rated power, actuation time, according to the anti-numerical value of arranging of regulation
Verification conclusion is provided, by being sent on serial communication to display screen, display screen cycle shows result.Existing relay checking method
It is that relay wiring is removed, unloads relay from installation framework, then the place of the protection test instrument gone is verified, after
Relay in electric appliance especially mechanism case has many wiring, removes narrow space, time-consuming and laborious, accidentally touches, the risk of mis-wired
It is larger.There is an urgent need for a kind of systems, and case above is improved.Relay checking instrument free of demolition based on arm chips can be on the spot
The parameters verification of all kinds of relays is carried out, it is time saving and energy saving, risk is reduced, working efficiency is improved.
The method of relay checking instrument free of demolition based on arm chips, it is characterised in that：DC partial voltage correction verification module uses
The resistance of 20M and 200K constitute pressure divider circuit realize by+220V forceful electric power voltages switch to+2.2V light current for difference sampling end ADC0,
ADC1 is acquired, and sample definition is indirect operation voltage v0, and relay JDQ to be verified and 36 Ω resistance connect pressure divider circuit through difference
It is indirect action current i0 to divide sampling end ADC2, ADC3 acquisition, sample definition；Micro-control unit v0, i0 based on acquisition, then root
According to DC partial voltage correction verification module circuit characteristic and parameter, the operation voltage and action current formula V0=that obtain ((v0*101)/
1000)-(i0/1000), I0=i0/36, then by the operation voltage and action current of arm chips calculating relay, by the two
Data further calculate the startup power of relay, start voltage, return voltage, rated power, actuation time, anti-according to regulation
It arranges numerical value to provide verification conclusion, the anti-requirement arranged of result and regulation is compared, judges whether it is qualified；Display is constituted man-machine
Interface can show real-time sampling data, verification conclusion, function selection prompt, realize human-computer dialogue, liquid crystal display device and micro-control
It is the liquid crystal display of 128*64 that unit processed, which uses serial communication, display,.
The utility model is complicated in small space, wiring for all kinds of time relays, exit relay, intermediate relay
Dismounting etc. it is time-consuming and laborious, accidentally touch with the risk of mis-wired it is larger in the case of, be carried out in situ relay startup power, start electricity
The test and calibration of the parameters such as pressure, return voltage, rated power, actuation time, make it meet regulatory requirements.
Overlap test wire：1,1 interface of device is connected to the positive ends A1 for waiting for school relay with test wire；2, by device
2 interfaces are connected to the ends cathode A2 for waiting for school relay with test wire；3,3 interfaces of device are connected to test wire and wait for school relay
Normal opened contact one end；4,4 interfaces of device with test wire are connected to the other end for the normal opened contact for waiting for school relay, referred to
The connecting terminal of Fig. 2.
Case is embodied：
Checking procedure such as Fig. 5, Fig. 6, Fig. 7 are carried out to certain jamproof high power time relay.
Claims (3)
1. the relay checking instrument free of demolition based on arm chips, it is characterised in that：By DC partial voltage correction verification module, microcontroller list
Member, display sequentially connect composition；Wherein, measured relay passes through the p-wire successively live end with DC partial voltage correction verification module
Mouth A (1), pressurization port B (2) are connected, and DC partial voltage correction verification module constitutes pressure divider circuit using the resistance of 20M and 200K and realizes
+ 220V forceful electric power voltages are switched to+2.2V light current to acquire for difference sampling end ADC0, ADC1；The man-machine interface that display is constituted is shown
It is the liquid crystal display of 128*64 to show that device uses serial communication, display with micro-control unit.
2. the relay checking instrument free of demolition according to claim 1 based on arm chips, which is characterized in that instrument connection has 4
It is a and respectively press pressurization port A (1), pressurization port B (2), actuating of relay input port A (3), input port B (4) sequence.
3. the relay checking instrument free of demolition according to claim 1 based on arm chips, which is characterized in that DC partial voltage
Correction verification module constitutes pressure divider circuit using the resistance of 20M and 200K and+220V forceful electric power voltages is switched to+2.2V light current, it is to be verified after
Electric appliance JDQ and 36 Ω resistance series connection partial pressure acquisition action current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721807961.9U CN207730897U (en) | 2017-12-20 | 2017-12-20 | Relay checking instrument free of demolition based on arm chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721807961.9U CN207730897U (en) | 2017-12-20 | 2017-12-20 | Relay checking instrument free of demolition based on arm chips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207730897U true CN207730897U (en) | 2018-08-14 |
Family
ID=63086120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721807961.9U Active CN207730897U (en) | 2017-12-20 | 2017-12-20 | Relay checking instrument free of demolition based on arm chips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207730897U (en) |
-
2017
- 2017-12-20 CN CN201721807961.9U patent/CN207730897U/en active Active
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