CN208283517U - A kind of Auto-Test System of protective relaying device CPU board - Google Patents
A kind of Auto-Test System of protective relaying device CPU board Download PDFInfo
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- CN208283517U CN208283517U CN201820852866.9U CN201820852866U CN208283517U CN 208283517 U CN208283517 U CN 208283517U CN 201820852866 U CN201820852866 U CN 201820852866U CN 208283517 U CN208283517 U CN 208283517U
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Abstract
The utility model relates to a kind of Auto-Test System of protective relaying device CPU board, including PC machine, PLC subsystem, relay, relay-protection tester, four test cell U1-U4, mimic-disconnecting switch, open into voltage commutation circuit and interchanger；The external one group of independent 220V alternating current of the PC machine, interchanger, PLC subsystem, relay-protection tester and mimic-disconnecting switch；The end L of the external 220V alternating current of relay；Tthe utility model system can carry out the test of 4 pieces of CPU boards every time, can complete the detection of 200 pieces of CPU boards for each person every day, save cost of labor significantly, greatly improve production efficiency, reduce the repetitive operation of producers.
Description
Technical field
The utility model relates to CPU board the field of test technology, be provided in particular in a kind of protective relaying device CPU board from
Dynamic test macro, for realizing the automatic test of each function items of pre-cast CPU board.
Background technique
When in electric system force device (such as generator, route) or electric system itself failure has occurred and jeopardizes electricity
When Force system is safely operated, it can send warning signal in time to operator, or directly to the breaker controlled
Trip signal is issued to terminate a kind of automation measure and equipment of the development of these events.Realize the complete of this automation measure
Equipment is generally commonly referred to as protective relaying device.
The CPU board function of power relay protection device is special, its basic function circuit includes following several pieces: analog quantity is adopted
Collection circuit, digital open entry loop, number output circuit, communication loop, five major part of man-machine interface, and the operating status of CPU board is straight
Connect the function realization for influencing entire power relay protection device.In the conventional technology, the functional test of CPU board is generally by producing
Personnel are carried out using measuring instrument block-by-block, item by item.The knot of various functions is artificially determined when artificial detection CPU board according to company standard
As a result fruit is sentenced its shortcoming is that detection speed is slow, heavy workload, repeatability have by force, during detection a possibility that leakage item
It is fixed that arbitrariness is also big.
Summary of the invention
The purpose of the utility model is to provide a kind of Auto-Test Systems of protective relaying device CPU board, realize CPU board
The automatic test of various functions, and report is generated to the test item of every piece of CPU board.
In order to achieve the above object, the technical solution of the utility model are as follows:
A kind of Auto-Test System of protective relaying device CPU board, including PC machine, PLC subsystem, relay, relay are protected
Shield tester, mimic-disconnecting switch, is opened into voltage commutation circuit and interchanger four test cells；The PC machine, interchanger, PLC
The external one group of independent 220V alternating current of subsystem, relay-protection tester and mimic-disconnecting switch；External one group of relay
The end L of 220V alternating current；
The PC machine is connect with interchanger and PLC subsystem；The interchanger is separately connected four test cells and relay
Protect tester；The relay-protection tester is connect with four test cells；Four test cells connection simulation open circuit
Device, mimic-disconnecting switch are connected into voltage commutation circuit with opening；Four test cells connection is opened into voltage commutation circuit；It is described
It opens and connects relay into voltage commutation circuit, relay is connect with four test cells；The relay and PLC subsystem connect
It connects, PLC subsystem connects four test cells；
220V alternating current input mimic-disconnecting switch, mimic-disconnecting switch export 220V DC voltage, direct-flow positive pole DC+, directly
Stream cathode is DC-, and three resistance of connecting between the DC+ and DC-, DC- is connected to the node 5 of control switch 1KK；R1 and R2
Between node 1 export 0.7 times of DC voltage；Node 2 between R2 and R3 exports 0.55 times of DC voltage；Node 1 connects
It is connected to the normally closed node 7 of relay KA24, node 2 is connected to the normally opened node 9 of relay KA24,8 He of relay KA24 node
10 are parallel-connected to the node 3 of control switch 1KK；The node 4 of control switch 1KK exports KR+, and the node 6 of control switch 1KK is defeated
KR- out；Control switch 1KK control is opened into test voltage；KR- is connected to four test cells and opens into public terminal.
The utility model has the beneficial effects that
1. Tthe utility model system can carry out the test of 4 pieces of CPU boards every time, 200 pieces of CPU boards can be completed for each person every day
Detection, save cost of labor significantly, greatly improve production efficiency, reduce the repetitive operation of producers.
2. the utility model is that every piece of CPU board generates electronic report, the state of each functional loop is carried out detailed
Description, facilitates the maintenance to the bad CPU board of detection, the retrospect of the Life cycle of products C PU plate may be implemented, and is product
Quality analysis provides foundation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model test macro；
Fig. 2 is the test cell of the utility model and opens the connection circuit diagram into voltage commutation circuit；
Fig. 3 is that the test cell of the utility model connects PLC subsystem circuit figure by relay.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination attached drawing.It is wherein different to implement
Similar component uses associated similar element numbers in mode.In the following embodiments, many datail descriptions are
In order to enable the application can be better understood.However, those skilled in the art can recognize without lifting an eyebrow, it is part of
Feature is dispensed in varied situations, or can be substituted by other elements, material, method.In some cases,
The relevant some operations of the application are there is no display in the description or describe, this is the core in order to avoid the application
It is flooded by excessive description, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary,
They can completely understand relevant operation according to the general technology knowledge of description and this field in specification.
Referring to a kind of Auto-Test System of protective relaying device CPU board of Fig. 1-Fig. 2,
Including PC machine, PLC subsystem, relay, relay-protection tester, four test cells, mimic-disconnecting switches, open into
Voltage commutation circuit and interchanger；The PC machine, interchanger, PLC subsystem, relay-protection tester and mimic-disconnecting switch are outer
Connect one group of independent 220V alternating current；The end L of the external one group of 220V alternating current of relay；
The PC machine is connect with interchanger and PLC subsystem；The interchanger is separately connected four test cells and relay
Protect tester；The relay-protection tester is connect with four test cells；Four test cells connection simulation open circuit
Device, mimic-disconnecting switch are connected into voltage commutation circuit with opening；Four test cells connection is opened into voltage commutation circuit；It is described
It opens and connects relay into voltage commutation circuit, relay is connect with four test cells；The relay and PLC subsystem connect
It connects, PLC subsystem connects four test cells；
220V alternating current inputs mimic-disconnecting switch, and the mimic-disconnecting switch exports 220V DC voltage, direct-flow positive pole DC
+, direct current cathode be DC-, three resistance of connecting between the DC+ and DC-, DC- is connected to the node 5 of control switch 1KK；R1
Node 1 between R2 exports 0.7 times of DC voltage；Node 2 between R2 and R3 exports 0.55 times of DC voltage；Node
1 is connected to the normally closed node 7 of relay KA24, and node 2 is connected to the normally opened node 9 of relay KA24, relay KA24 node 8
The node 3 for being parallel-connected to control switch 1KK with 10；The node 4 of control switch 1KK exports KR+, the node 6 of control switch 1KK
Export KR-；Control switch 1KK control is opened into test voltage；KR- is connected to four test cells and opens into public terminal.
It is relay referring to Fig. 3, KA01-KA14, L is one end of 220V AC power source, and N is the another of 220V AC power source
Outer one end；The end L of AC power source is connected respectively to relay coil Q1-Q14 node, node Q1 '-Q14 ' of relay coil
It is connected respectively to B1 ~ B14 node of PLC subsystem；N-terminal of the B15 Node connectedness of PLC subsystem to AC power source；Voltage is cut
The KR+ for changing circuit output is connected to relay node C1-C14, and the other end of relay node is separately connected opening for test cell
Enter end.
The course of work of the utility model is as follows:
The test in analog quantity circuit:
Relay-protection tester exports the analog input terminal that analog signals access test cell by conducting wire.4
The input voltage of test cell is connected by conductor in parallel, input current by conducting wire, and test cell internal bus is then passed through
Input CPU board to be measured.
Host computer sends " analog output " order by interchanger and arrives relay-protection tester, and tester output is preset
Analog signals are to test cell input terminal.
Host computer sends " calling analog quantity " order by interchanger and arrives test cell, and analog quantity is sampled and counted by test cell
Result is calculated by being sent to host computer on interchanger.
The test of digital open entry loop:
AC power source is formed into a loop via relay, PLC.One end of DC power supply KR+ connection relay contact, relay
The other end of contact is connected to the opening into terminal of test cell, and KR- is connected to the opening into common end of test cell.
Host computer sends serial port command control PLC and in turn switches on relay coil power supply, and the normally opened contact of relay is closed,
DC power supply KR+ is input to test cell and opens into end.
Host computer sends " calling is opened into result " order by interchanger and arrives test cell, and test cell will be opened into identification knot
Fruit is by being sent to host computer on interchanger.
Number outputs the test in circuit:
DC power supply DC+ is wired to one end that test cell outputs node, outputs the other end connection of node
To PLC terminal.
Host computer sends " driving is outputed " order by interchanger and arrives test cell, and test cell is successively closed and outputs circuit
Node, DC+ is input to PLC terminal.
Host computer sends " opening into calling " order by serial communication and leads to collected input signal result to PLC, PLC
It crosses and gives host computer on serial ports.
Man-machine interface circuit test:
Liquid crystal display is connected to the liquid crystal display of test cell by internal bus.Test cell will show that data are sent
To liquid crystal display, whether observation display is normal.
Host computer sends " clock synchronization " order by interchanger and arrives test cell, and test cell is arranged after receiving clock synchronization message
Year, month, day, hour, min, the second information of RTC clock, test cell pass through internal bus again and send liquid crystal display for temporal information
Device is shown whether the time for observing display is consistent with host computer, and inserts result on testing result column.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (1)
1. a kind of Auto-Test System of protective relaying device CPU board, it is characterised in that:
Including PC machine, PLC subsystem, relay, relay-protection tester, four test cell U1-U4, mimic-disconnecting switch, open
Enter voltage commutation circuit and interchanger；The PC machine, interchanger, PLC subsystem, relay-protection tester and mimic-disconnecting switch are equal
External one group of independent 220V alternating current；The end L of the external 220V alternating current of relay；
The PC machine is connect with interchanger and PLC subsystem；The interchanger is separately connected four test cells and relay protection
Tester；The relay-protection tester is connect with four test cells；Four test cells connect mimic-disconnecting switch, mould
Quasi- breaker is connected into voltage commutation circuit with opening；Four test cells connection is opened into voltage commutation circuit；It is described open into
Voltage commutation circuit connects relay, and relay is connect with four test cells；The relay is connect with PLC subsystem, PLC
Subsystem connects four test cells；
One group of 220V alternating current inputs mimic-disconnecting switch, and the mimic-disconnecting switch exports 220V DC voltage, direct-flow positive pole
It is DC- for DC+, direct current cathode, three resistance of connecting between the DC+ and DC-, DC- is connected to the node of control switch 1KK
5；Node 1 between R1 and R2 exports 0.7 times of DC voltage；Node 2 between R2 and R3 exports 0.55 times of DC voltage；
Node 1 is connected to the normally closed node 7 of relay KA24, and node 2 is connected to the normally opened node 9 of relay KA24, relay KA24
Node 8 and 10 is parallel-connected to the node 3 of control switch 1KK；The node 4 of control switch 1KK exports KR+, control switch 1KK's
Node 6 exports KR-；Control switch 1KK control is opened into test voltage；KR- is connected to four test cells and opens into common end
Son.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820852866.9U CN208283517U (en) | 2018-06-04 | 2018-06-04 | A kind of Auto-Test System of protective relaying device CPU board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820852866.9U CN208283517U (en) | 2018-06-04 | 2018-06-04 | A kind of Auto-Test System of protective relaying device CPU board |
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| Publication Number | Publication Date |
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| CN208283517U true CN208283517U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820852866.9U Active CN208283517U (en) | 2018-06-04 | 2018-06-04 | A kind of Auto-Test System of protective relaying device CPU board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116930851A (en) * | 2023-06-26 | 2023-10-24 | 南京国电南自电网自动化有限公司 | System and method for detecting interference immunity of power frequency magnetic field of relay protection device |
-
2018
- 2018-06-04 CN CN201820852866.9U patent/CN208283517U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116930851A (en) * | 2023-06-26 | 2023-10-24 | 南京国电南自电网自动化有限公司 | System and method for detecting interference immunity of power frequency magnetic field of relay protection device |
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