CN206671467U - The health status detection means of new relay protecting power plug-in unit - Google Patents
The health status detection means of new relay protecting power plug-in unit Download PDFInfo
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- CN206671467U CN206671467U CN201720385395.0U CN201720385395U CN206671467U CN 206671467 U CN206671467 U CN 206671467U CN 201720385395 U CN201720385395 U CN 201720385395U CN 206671467 U CN206671467 U CN 206671467U
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- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 230000003862 health status Effects 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 238000005070 sampling Methods 0.000 claims description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Abstract
The utility model discloses a kind of health status detection means of new relay protecting power plug-in unit, including power circuit, drive circuit, electric resistance array test circuit, sample circuit and controller；Power circuit is powered；Drive circuit receives control order, the test circuit work of driving electric resistance array, and driving power circuit gives tested power insert to power；Sample circuit even samples the input/output argument of tested power insert and uploads controller；Controller judges the health status of power insert according to data are uploaded.The utility model can be realized carries out automatic detection to power insert performance parameter, and circuit structure is simple, compact, more efficient.
Description
Technical field
The utility model is specifically related to a kind of health status detection means of new relay protecting power plug-in unit.
Background technology
Protective relaying device is when the force device (such as generator, circuit) in power system or power system are sent out in itself
When having given birth to failure and jeopardizing safe operation of power system, can be sent warning signal in time to operator, or directly to
The breaker controlled sends trip signal to terminate a kind of automation measure of these events development and equipment.
Safe and reliable stable operation of the protective relaying device to power system has highly important effect, relay protection dress
The ratio put shared by the electric network fault caused by failure is higher.Switching Power Supply used for relay protection is the main mould of protective relaying device
Block, it is the basis of relay protection normal work, and protective relaying device requires that the security of its power insert, reliability are very high,
Prevent tripping or malfunction caused by power insert failure.National grid provides：" the enough protection spare unit of configuration, spare part,
Shorten the relay protection defect processing time, the Switching Power Supply module of microcomputer protecting device is preferably changed after running 6 years ".With
Above it can be seen that whether protective relaying device breaks down and have very big associate with the quality of power insert performance.
At present, it is larger to run more than the relay protecting power plug-in unit accounting of 6 years, there is no and can adapt to keep the scene intact in plant stand
Relay protecting power plug-in unit automatic detection device.In order to avoid protective relaying device power insert catastrophic failure is to power system
Safe and stable operation is impacted, it is necessary to be detected to the performance of power insert, and then assess its health status, to power supply
The plug-in unit that can be unsatisfactory for requiring takes appropriate measures.
Utility model content
The purpose of this utility model is that providing a kind of health status that can realize relay protecting power plug-in unit is carried out certainly
The health status detection means of the new relay protecting power plug-in unit of dynamic detection.
The health status detection means of this new relay protecting power plug-in unit provided by the utility model, including power supply electricity
Road, drive circuit, electric resistance array test circuit, sample circuit and controller；Power circuit is the new relay protecting power
Health status detection means and the power insert power supply of plug-in unit；Controller by drive circuit connect electric resistance array test circuit and
Power circuit；Drive circuit is used for the order for receiving controller, the test circuit work of driving electric resistance array, while also driving power
Circuit gives tested relay protecting power plug-in unit power supply；Electric resistance array test circuit is connected by drive circuit with controller, is used for
The control command that controller is sent is received to test the relay protecting power plug-in unit out-put supply；Sample circuit is connected to
Between electric resistance array test circuit and controller, the power supply signal of tested power insert is output to for sampling power circuit, together
When sample the output parameter of tested power insert, and sampled signal is passed to controller；Controller is used for according to sample circuit
The data of biography judge the health status of power insert.
The health status detection means of described new relay protecting power plug-in unit also includes communicating circuit and lcd touch
Screen；Controller connects liquid crystal touch screen by communicating circuit, and the health status of the new relay protecting power plug-in unit is examined
The running parameter of survey device is sent to screen by communicating circuit and shown, while LCDs is also used for receiving outside to institute
State the control command that the health status detection means of new relay protecting power plug-in unit is sent and control is transferred to by communicating circuit
Device processed.
The health status detection means of described new relay protecting power plug-in unit also includes radiating module；The radiating mould
Block is connected with controller, for receiving the order of controller and the health status of the new relay protecting power plug-in unit being detected
Device is radiated.
The health status detection means of described new relay protecting power plug-in unit also includes alarm module；The alarm mould
Block is connected with controller, in the health status automatic detection device operation irregularity of the new relay protecting power plug-in unit
Alarm.
The health status detection means of described new relay protecting power plug-in unit also includes protection circuit；Controller passes through
Protection circuit connects alarm module and radiating module；Protection circuit is used to receive the control signal that controller is sent, described new
Start radiating module and alarm module during the health status detection means operation irregularity of type relay protecting power plug-in unit, simultaneously switch off
The power supply signal that power circuit is provided the tested power insert, so as to protect the strong of the new relay protecting power plug-in unit
Health condition checkout gear.
Described sample circuit is included at temperature sampling circuit, voltage transformer, current transformer and voltage and current signal
Manage circuit；Voltage transformer is connected in parallel on power insert current supply circuit in the input and power circuit of electric resistance array test circuit
Output end, for sampling the input voltage signal and output voltage signal of power insert；Current transformer is connected on electric resistance array
The output end of test circuit, for sampling the output current signal of power insert；Temperature sampling circuit is described new for gathering
Sampled signal is simultaneously passed to controller by the operational temperature information of the health status detection means of relay protecting power plug-in unit；Voltage electricity
It is that the voltage and current signal that voltage transformer summation current transformer samples is converted to the level of controller to flow signal processing circuit
Input controller again after scope.
The electric resistance array test circuit includes startup test circuit, drive circuit, switching tube and the resistance being sequentially connected in series
Array；Controller starts test circuit, drive circuit and the access power insert output of switch controlled electric resistance array by controlling
The resistance at end, so as to change the size of the output loading of power insert；Drive circuit is used for being switched on and off for driving switch pipe；
Start test circuit and be used to before test is started ensure that the state of drive circuit controlling switch pipe to be off-state.
The health status detection means of this new relay protecting power plug-in unit provided by the utility model, by power supply
The collection and processing of the influential voltage and current signal of plug-in unit performance, are examined so as to realize to power insert performance parameter
Survey, include the test of self-starting performance, ripple factor and carrying load ability to dc source etc.；And circuit structure letter
It is single, compact, facilitate protective relaying device attendant to carry with；Wiring is simple, and power insert performance can be carried out
Automatic detection, cumbersome operation is reduced, improve the efficiency of attendant at the scene.
Brief description of the drawings
Fig. 1 is the circuit structure block diagram of detection means of the present utility model.
Fig. 2 is the power circuit schematic diagram of detection means of the present utility model.
Fig. 3 is sample circuit, electric resistance array test circuit and the controller connection signal of detection means of the present utility model
Figure.
Fig. 4 is the circuit connection signal of the switching tube and electric resistance array in the test circuit of detection means of the present utility model
Figure.
Fig. 5 is the circuit theory diagrams of the startup test circuit of detection means of the present utility model.
Embodiment
It is the circuit structure block diagram of detection means of the present utility model as shown in Figure 1：It is provided by the utility model this new
The health status detection means of type relay protecting power plug-in unit, including power circuit, drive circuit, electric resistance array test circuit,
Sample circuit, controller, communicating circuit, liquid crystal touch screen, radiating module, alarm module and protection circuit；Power circuit is institute
State health status detection means and the power insert power supply of new relay protecting power plug-in unit；Electric resistance array test circuit passes through drive
Dynamic circuit is connected with controller, for receiving the control command of controller transmission to the relay protecting power plug-in unit out-put supply
Tested；Controller connects electric resistance array test circuit and power circuit by drive circuit；Drive circuit, which is used to receive, to be controlled
The order of device processed, the test circuit work of driving electric resistance array, while also driving power circuit gives tested relay protecting power plug-in unit
Power supply；Sample circuit is connected between electric resistance array test circuit and controller, for sample the input of tested power insert with
Output parameter, and sampled signal is passed to controller；Controller is used to judge power insert according to the data that sample circuit uploads
Health status；Controller connects liquid crystal touch screen, and being good for the new relay protecting power plug-in unit by communicating circuit
The running parameter of health condition checkout gear is sent to screen by communicating circuit and shown, while LCDs is also used for receiving
Control command that the outside health status detection means to the new relay protecting power plug-in unit is sent simultaneously passes through communicating circuit
It is transferred to controller；The radiating module is connected by protection circuit with controller, for receiving the order of controller and to institute
The health status detection means for stating new relay protecting power plug-in unit is radiated；The alarm module passes through protection circuit and control
Device connection processed, for the health status automatic detection device operation irregularity alarm in the new relay protecting power plug-in unit；
Protection circuit is used to receive the control signal that controller is sent, and is detected in the health status of the new relay protecting power plug-in unit
Start radiating module and alarm module during device operation irregularity, so as to protect the healthy shape of the new relay protecting power plug-in unit
State detection means.
It is illustrated in figure 2 the power circuit schematic diagram of detection means of the present utility model：Described in 220V AC powers enter
Be divided into two-way after detection means, all the way by single phase full bridge controlled rectifier carry out rectification after by being relay after capacitor filtering
Protection power source plug-in unit is powered；The direct current energy of outputting standard after another way is then changed by Switching Power Supply, after capacitor filtering
Powered for circuit chip and relay.
Sample circuit, electric resistance array test circuit and the controller for being illustrated in figure 3 detection means of the present utility model connect
Connect schematic diagram：Electric resistance array test circuit includes startup test circuit, drive circuit, switching tube and the Resistor Array Projector being sequentially connected in series
Row, sample circuit only include current transformer and voltage transformer in figure；Controller sends control drive signal, passes through startup
1~electric resistance array of electric resistance array 4 is driven by 1~drive circuit of drive circuit 4 again respectively after test circuit, so as to change power supply
The output loading size of plug-in unit.The power supply that power insert exports in figure with then including+5V and+5V ,+15V and+15V, -15V
With -15V and+24V and+24V.Relay auxiliary node can control whether the above-mentioned four roads out-put supply of power insert connects
Enter load.In the specific implementation, can be selected according to the output voltage and watt level of the different types of power insert of different manufacturers
Select the parameter of different electric resistance array combinations, voltage transformer, current transformer and relay；Voltage transformer is connected in parallel on resistance
The output end of array test circuit, for sampling the output voltage signal of power insert；Current transformer is connected on electric resistance array
The output end of test circuit, for sampling the output current signal of power insert；Voltage and current signal process circuit is by voltage
The voltage and current signal of transformer summation current transformer sampling is converted to after the level range of controller input controller again.
The switching tube and the circuit of electric resistance array being illustrated in figure 4 in the test circuit of detection means of the present utility model connect
Connect schematic diagram：After switching tube V1~V4 concatenates with corresponding resistance respectively, then connect together again, so as to form in Fig. 3
Electric resistance array；Each switching tube is individually controlled by controller to be switched on or off, so as to realize any group of electric resistance array
Close, so as to reach the purpose for the resistance value for changing electric resistance array.
It is the specific implementation form of electric resistance array circuit in figure, is made up of the resistance and 4 MOSFET of 4 different resistances.
The size of resistance is R, 2R, 4R and 8R.Defined function Si is as follows：Si is 0 (i=when Si is 1, VTi shut-offs when VTi is turned on
1、2、3、4).So VT1-VT4 have 16 kinds conducting shut-off combination, be respectively (0000), (0001), (0010), (0011),
(0100)、(0101)、(0110)、(0111)、(0000)、(0001)、(0010)、(0011)、(0100)、(0101)、(0110)
(0111).Test circuit output current I, which can so be obtained, is：
In above formula, U is test circuit output voltage.By controlling MOSFET break-make to control the output of test circuit
Electric current, and then test circuit power output P is controlled, so as to obtain the voltage and current parameter under different loads.
Assuming that rated output voltage is U to power insert all the wayN, rated power PN.When the load, output voltage U
It is held essentially constant, equal to UN.When VT1-VT4 is turned on entirely, test circuit power output P=15U2/ (8R), it is assumed that now defeated
Go out power and be equal to PN, R=15U in such resistor matrixN 2/(8PN).But in the market may and in the absence of resistance just with R phases
Deng resistance, the resistance of actual use can be slightly less than resistance R.
When rated output power is larger all the way for power insert, the power that resistance R is consumed when VT1 is turned on is larger, can
In the form of using multiple resistor coupled in parallel, resistance R is obtained by the resistor coupled in parallel that n resistance is nR, so disappeared in each resistance
The power of consumption will be greatly reduced.
It is illustrated in figure 5 the circuit theory diagrams of the startup test circuit of detection means of the present utility model：In order to prevent electricity
I.e. bringing onto load, design start test circuit to source plug-in unit as depicted before test is not started.When a test is begun, no matter control
The IO1-IO4 mouth output levels of module are high level or low level, and drive circuit input is all low level, ensures Resistor Array Projector
Row will not access test circuit.Wherein, chip 74HC245 can improve I/O port driving force, and chip 74LS00 is NOT gate, chip
74LS08 be and door.Drive circuit is the special drive circuit of switching tube in driving Fig. 4.
Described heat abstractor can use radiator fan in the specific implementation；Alarm module can then use sound and light alarm
Device.
Claims (7)
1. a kind of health status detection means of new relay protecting power plug-in unit, it is characterised in that including power circuit, driving
Circuit, electric resistance array test circuit, sample circuit and controller；Power circuit is the strong of the new relay protecting power plug-in unit
Health condition checkout gear and power insert power supply；Controller connects electric resistance array test circuit and power supply electricity by drive circuit
Road；Drive circuit is used for the order for receiving controller, the test circuit work of driving electric resistance array, while also driving power circuit is given
Tested relay protecting power plug-in unit power supply；Sample circuit is connected between electric resistance array test circuit and controller, for sampling
The input of tested power insert and output parameter, and sampled signal is passed to controller；Controller is used for according to sample circuit
The data of biography judge the health status of power insert.
2. the health status detection means of new relay protecting power plug-in unit according to claim 1, it is characterised in that also
Including communicating circuit and liquid crystal touch screen；Controller connects liquid crystal touch screen by communicating circuit, and the new relay is protected
The running parameter of the health status detection means of shield power insert is sent to screen by communicating circuit and shown, while liquid crystal
Display screen is also used for receiving the control command that the outside health status detection means to the new relay protecting power plug-in unit is sent
And controller is transferred to by communicating circuit.
3. the health status detection means of new relay protecting power plug-in unit according to claim 1, it is characterised in that also
Including radiating module；The radiating module is connected with controller, for receiving the order of controller and the new relay being protected
The health status detection means of shield power insert is radiated.
4. the health status detection means of new relay protecting power plug-in unit according to claim 3, it is characterised in that also
Including alarm module；The alarm module is connected with controller, for the healthy shape in the new relay protecting power plug-in unit
State automatic detection device operation irregularity alarm.
5. the health status detection means of new relay protecting power plug-in unit according to claim 4, it is characterised in that also
Including protection circuit；Controller connects alarm module and radiating module by protection circuit, and protection circuit is used to receive controller
The control signal sent, start radiating in the health status detection means operation irregularity of the new relay protecting power plug-in unit
Module and alarm module, so as to protect the health status detection means of the new relay protecting power plug-in unit.
6. the health status detection means of the new relay protecting power plug-in unit according to one of Claims 1 to 5, its feature
It is that described sample circuit includes temperature sampling circuit, voltage transformer, current transformer and voltage and current signal processing electricity
Road；Voltage transformer is connected in parallel on the output of power insert current supply circuit in the input and power circuit of electric resistance array test circuit
End, for sampling the input voltage signal and output voltage signal of power insert；Current transformer is connected on electric resistance array test
The output end of circuit, for sampling the output current signal of power insert；Temperature sampling circuit is used to gather the new relay
Sampled signal is simultaneously passed to controller by the operational temperature information of the health status detection means of protection power source plug-in unit；Voltage x current is believed
Number process circuit is the level range that the voltage and current signal that voltage transformer summation current transformer samples is converted to controller
Input controller again afterwards.
7. the health status detection means of the new relay protecting power plug-in unit according to one of Claims 1 to 5, its feature
It is that the electric resistance array test circuit includes startup test circuit, drive circuit, switching tube and the electric resistance array being sequentially connected in series；
Controller is by controlling the resistance for starting test circuit, drive circuit and switch controlled electric resistance array and accessing power insert output end
Value, so as to change the size of the output loading of power insert；Drive circuit is used for being switched on and off for driving switch pipe；Start and survey
Try circuit and be used to before test is started ensure that the state of drive circuit controlling switch pipe to be off-state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385395.0U CN206671467U (en) | 2017-04-13 | 2017-04-13 | The health status detection means of new relay protecting power plug-in unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720385395.0U CN206671467U (en) | 2017-04-13 | 2017-04-13 | The health status detection means of new relay protecting power plug-in unit |
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| CN206671467U true CN206671467U (en) | 2017-11-24 |
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| CN201720385395.0U Active CN206671467U (en) | 2017-04-13 | 2017-04-13 | The health status detection means of new relay protecting power plug-in unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872851A (en) * | 2017-04-13 | 2017-06-20 | 国家电网公司 | The health status detection means and detection method of new relay protecting power plug-in unit |
| CN110609511A (en) * | 2019-09-24 | 2019-12-24 | 南京国电南自电网自动化有限公司 | Full-automatic test system, method and storage medium for power automation device plug-in |
-
2017
- 2017-04-13 CN CN201720385395.0U patent/CN206671467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872851A (en) * | 2017-04-13 | 2017-06-20 | 国家电网公司 | The health status detection means and detection method of new relay protecting power plug-in unit |
| CN110609511A (en) * | 2019-09-24 | 2019-12-24 | 南京国电南自电网自动化有限公司 | Full-automatic test system, method and storage medium for power automation device plug-in |
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