CN106841876A - A kind of monitoring method of relay protection outlet pressing plate - Google Patents
A kind of monitoring method of relay protection outlet pressing plate Download PDFInfo
- Publication number
- CN106841876A CN106841876A CN201710187709.0A CN201710187709A CN106841876A CN 106841876 A CN106841876 A CN 106841876A CN 201710187709 A CN201710187709 A CN 201710187709A CN 106841876 A CN106841876 A CN 106841876A
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- input
- output
- relay
- output clamping
- pressing plate
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
Abstract
The present invention relates to a kind of monitoring method of relay protection outlet pressing plate; obtain trip protection output clamping, the input voltage signal of the lower end connecting pole of reclosing output clamping; when voltage signal reflection trip protection output clamping, reclosing output clamping is put into for input, output input status information；When voltage signal reflection trip protection output clamping, reclosing output clamping is put into for leakage input or virtual connection, without output input voltage signal；The input state of relay protection outlet pressing plate is monitored by putting into status information.Combination by cascading triode and light coupling relay of the invention; same voltage translation circuit can be realized judging leakage input, virtual connection simultaneously; the input situation of protection device tripping operation output clamping and reclosing output clamping can not only be judged; can also judge pressing plate whether virtual connection, and solve the determination methods of voltage difference and cannot exclude the exception returned when the two ends of lock output clamping are both positive electricity.
Description
Technical field
The present invention relates to transformer station's relay protection technology, more specifically to a kind of relay protection outlet pressing plate
Monitoring method.
Background technology
In recent years, with the development of the automation of transformation substations, the state of the function pressing plate of protective relaying device all can more than
Surveillance center is delivered to, the state to protection exit pressing plate lacks monitoring only.And the state of protection exit pressing plate is directly influenced
During electric network fault, whether protection device can tripping circuit breaker and isolated fault.
Due to not monitored to protection exit pressing plate, also occurred output clamping leakage during substation inspection
Throw, or the situation that leakage input due to pressing plate, virtual connection and the scope that causes the accident expand.
Monitoring of the prior art to pressing plate is mainly realized by two methods：
One is, by being further added by an auxiliary node on the position when pressing plate puts into, or is compared by shooting image
The right monitoring to realize pressing plate；
Two are, realization monitoring is compared by the current potential on Egress node both sides.
The above method exist shortcoming be：
Method one, it is impossible to realize judgement during pressing plate virtual connection；
Method two, when switch closes position, if coincidence Egress node both sides are all positive electricity, cannot monitor that reclosing is exported
The state of pressing plate.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of accurately to monitor protection exit pressing plate
The monitoring method of the relay protection outlet pressing plates of state such as input, leakage input, virtual connection.
Technical scheme is as follows：
A kind of monitoring method of relay protection outlet pressing plate, obtains trip protection output clamping, reclosing output clamping
The input voltage signal of lower end connecting pole, when input voltage signal reflection trip protection output clamping, reclosing output clamping are
During input, output input status information；When input voltage signal reflection trip protection output clamping, reclosing output clamping are leakage
When input or virtual connection, without output input voltage signal；The input shape of relay protection outlet pressing plate is monitored by putting into status information
State.
Preferably, the lower end connecting pole of trip protection output clamping, reclosing output clamping connects voltage conversion respectively
Loop, voltage translation circuit sets light coupling relay；It is defeated when trip protection output clamping, reclosing output clamping are for input
Go out and put into voltage signal, light coupling relay conducting, and then export input status information；When trip protection output clamping, reclosing
When output clamping is for leakage input or virtual connection, without output input voltage signal, light coupling relay cut-off, output input fault-signal.
Preferably, voltage translation circuit includes negative electricity conversing circuits, positive electricity conversing circuits, led to by the triode for cascading
The conducting and cut-off of disconnected control light coupling relay.
Preferably, negative electricity conversing circuits include two NPN triodes of cascade, the light coupling relay of negative electricity conversing circuits
Input cathode connect NPN triode colelctor electrode；Positive electricity conversing circuits include a NPN triode, positive electricity conversing circuits
Light coupling relay input cathode connect NPN triode colelctor electrode.
Preferably, the lower end connecting pole of trip protection output clamping, reclosing output clamping is exported respectively in input
Negative electricity, positive electricity.
Preferably, when trip protection output clamping is for input, control power supply negative electricity closes position by breaking coil, breaker
Auxiliary node, tripping operation guard relay and trip protection output clamping, make the lower end binding post of trip protection output clamping be negative
Electricity.
Preferably, when reclosing output clamping is for input, control power supply positive electricity is protected by tripping position relay, combined floodgate
Relay and reclosing output clamping are held, the lower end binding post for making reclosing output clamping is positive electricity.
Preferably, when the light coupling relay of voltage translation circuit is turned on, exporting conducting voltage signal, conducting voltage letter
Number through master control module judges, main control module outputting drive voltage signal, drive voltage signal is connected to the light in State- output loop
The input anode of coupling relay, light coupling relay output state voltage signal；When the light coupling relay of voltage translation circuit is cut
When only, without conducting voltage signal output, without drive voltage signal output, State- output loop output input fault-signal.
Beneficial effects of the present invention are as follows：
The monitoring method of relay protection outlet pressing plate of the present invention, is gone out by trip protection output clamping, reclosing
Based on the input voltage signal of the lower end connecting pole of mouth pressing plate, the step such as acquired, conversion, judgement, final output can be just
Really reflect trip protection output clamping, the signal of the state of reclosing output clamping.The present invention is by cascading triode and optocoupler
The combination of relay, same voltage translation circuit can simultaneously be realized judging leakage input, virtual connection, can not only judge to protect
Protection unit trips the input situation of output clamping and reclosing output clamping, moreover it is possible to judge pressing plate whether virtual connection, overcome existing
Technology needs to carry out the judgement of leakage input, virtual connection by different technological means and principle, and solves the judgement of voltage difference
Method cannot exclude the exception returned when the two ends of lock output clamping are both positive electricity.Compared with the method that image is compared, this
Invention is non-to be observed by external presentation, but inherently identifies whether to put into successfully, and recognition result is direct and accurate.
Brief description of the drawings
Fig. 1 is the present invention to realize the schematic diagram of remote monitoring；
Fig. 2 is the schematic diagram of negative electricity conversing circuits；
Fig. 3 is the schematic diagram of positive electricity conversing circuits；
Fig. 4 is the schematic diagram for obtaining input information of voltage；
Fig. 5 is the schematic diagram in State- output loop；
Fig. 6 is the schematic diagram of monitoring arrangement.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The present invention is in order to solve the deficiency that cannot accurately judge whether virtual connection that prior art is present, there is provided a kind of relay is protected
The monitoring method of output clamping is protected, whether the lower end connecting pole by trip protection output clamping, reclosing output clamping is powered
Detected and judged, can accurately be detected that trip protection output clamping, reclosing output clamping are input, leakage input, void
The state such as connect, the Surveillance center that judged result can be transmitted to distal end is monitored on-line.As shown in figure 1, by protective relaying device
The lower end binding post of trip protection output clamping, reclosing output clamping in operation circuit accesses monitoring arrangement, monitored dress
Measure and control device is outputed signal to after putting judgement, through dispatch data net after netting twine reaches telemechanical apparatus, trip protection is exported
Pressing plate, the state of reclosing output clamping deliver to Surveillance center.
The monitoring method of relay protection outlet pressing plate of the present invention, is exported with trip protection output clamping, reclosing
The powered situation of the lower end connecting pole of pressing plate is obtaining trip protection output clamping, reclosing output clamping as monitoring basis
Lower end connecting pole input voltage signal after judged；When input voltage signal reflection trip protection output clamping, overlap
When lock output clamping is for input, output input status information；When input voltage signal reflection trip protection output clamping, reclosing
When output clamping is for leakage input or virtual connection, without output input voltage signal.Relay protection outlet is monitored by putting into status information
The input state of pressing plate, i.e., when trip protection output clamping, reclosing output clamping are for input, input status information reflection is protected
Shield tripping operation output clamping, reclosing output clamping are input；When trip protection output clamping, reclosing output clamping for leakage puts into
Or during virtual connection, without output input voltage signal, input fault-signal reflection trip protection output clamping, reclosing output clamping are
Leakage input or virtual connection.
In order to realize the judgement to leakage input and virtual connection, the present invention is exported to trip protection by voltage conversion circuit and pressed
Plate, the input voltage signal of the lower end connecting pole of reclosing output clamping are changed, and are converted to the throwing of light coupling relay output
Enter status information or input fault-signal, as judging trip protection output clamping, the input state of reclosing output clamping
Foundation.Trip protection output clamping, the lower end connecting pole of reclosing output clamping connect voltage translation circuit, voltage conversion respectively
Loop sets light coupling relay；When trip protection output clamping, reclosing output clamping are for input, output input voltage letter
Number, light coupling relay conducting, and then export input status information；When trip protection output clamping, reclosing output clamping are leakage
When input or virtual connection, without output input voltage signal, light coupling relay cut-off, output input fault-signal.
Because the lower end connecting pole of trip protection output clamping, reclosing output clamping may export positive electricity or negative electricity, it is
It is applied to two kinds of situations, voltage translation circuit includes negative electricity conversing circuits, positive electricity conversing circuits, is led to by the triode for cascading
The conducting and cut-off of disconnected control light coupling relay.Output negative electricity during for input, its lower end connecting pole connection negative electricity is converted back
Road, output positive electricity during for input, its lower end connecting pole connection positive electricity conversing circuits.
In the present embodiment, during input, the lower end connecting pole output negative electricity of trip protection output clamping, therefore, trip protection
The lower end connecting pole connection negative electricity conversing circuits of output clamping.As shown in Fig. 2 negative electricity conversing circuits include two NPN of cascade
Triode, the input cathode of the light coupling relay OP1 of negative electricity conversing circuits connects the colelctor electrode of NPN triode.Second level NPN
The base stage of triode Q2 is connected with the lower end connecting pole of trip protection output clamping, the emitter grounding of triode Q2, base stage with penetrate
Interpolar parallel connection peripheral circuit, including resistance, diode, electric capacity in parallel, colelctor electrode connection+12V voltages.The poles of first order NPN tri-
The base stage of pipe Q1 is connected with the colelctor electrode of triode Q2, the colelctor electrode of triode Q1 and the input cathode of light coupling relay OP1
Connection, emitter grounding.Input anode connection+12V the voltages of light coupling relay OP1, the output head anode of light coupling relay OP1
Connection+24V voltages, negative pole of output end connection main control module.When trip protection output clamping puts into, the input of monitoring arrangement
It is negative electricity, triode Q2 cut-offs, triode Q1 conductings, light coupling relay OP1 conductings, main control module is opened into positive electricity.When protection is jumped
When the virtual connection of lock output clamping or leakage input, the input of monitoring arrangement does not have electricity, triode Q2 conductings, triode Q1 cut-offs, it is impossible to
Make light coupling relay OP1 turn on, main control module without open into.
During input, the lower end connecting pole output positive electricity of reclosing output clamping, therefore, the lower end of reclosing output clamping connects
Connect post connection positive electricity conversing circuits.As shown in figure 3, positive electricity conversing circuits include a NPN triode, the light of positive electricity conversing circuits
The input cathode of coupling relay OP2 connects the colelctor electrode of NPN triode.The base stage of NPN triode Q3 exports pressure with reclosing
The lower end connecting pole connection of plate, the emitter grounding of triode Q3, peripheral circuit in parallel between base stage and emitter-base bandgap grading, including electricity in parallel
Resistance, diode, electric capacity, colelctor electrode are connected with the input cathode of light coupling relay OP2.The input of light coupling relay OP2 is rectified
Pole connects+12V voltages, the output head anode connection+24V voltages of light coupling relay OP2, negative pole of output end connection main control module.
When reclosing output clamping puts into, the input of monitoring arrangement is positive electricity, and triode Q3 conductings, light coupling relay OP2 is turned on,
Main control module is opened into positive electricity.When the virtual connection of reclosing output clamping or leakage input, the input of monitoring arrangement does not have electricity, triode Q3
Cut-off, it is impossible to make light coupling relay OP2 turn on, main control module without open into.
In the present embodiment, trip protection output clamping, reclosing output clamping lower end connecting pole input when, respectively it is defeated
Go out negative electricity, positive electricity, corresponding to circuit structure, when trip protection output clamping is for input, control power supply negative electricity by breaking coil,
Breaker closes position auxiliary node, tripping operation guard relay and trip protection output clamping, makes the lower end of trip protection output clamping
Binding post is negative electricity.When reclosing output clamping is for input, control power supply positive electricity by tripping position relay, close a floodgate keep after
Electrical equipment and reclosing output clamping, the lower end binding post for making reclosing output clamping are positive electricity.
As shown in figure 4, following two circuits in parallel between the positive pole KM+ and negative pole KM- of control power supply：
First, the breaking coil TQ of series connection, breaker close position auxiliary node DL2, tripping operation guard relay TBJ and trip protection
Output clamping 1CLP1, tripping operation guard relay TBJ and trip protection output clamping 1CLP1 both sides are parallel with the red light HD of series connection
With closing operation position relay HWJ；
2nd, the closing coil HQ of series connection, breaker close position auxiliary node DL1, combined floodgate guard relay HBJ and reclosing and go out
Mouth pressing plate 1CLP2, combined floodgate guard relay HBJ and reclosing output clamping 1CLP2 both sides are parallel with the green light LD of series connection and jump
Gate position relay TWJ.
Wherein, monitoring arrangement is connected on the left of trip protection output clamping 1CLP1, reclosing output clamping 1CLP2 respectively
Binding post, obtains trip protection output clamping, the input voltage signal of the lower end connecting pole of reclosing output clamping.If protection
Tripping operation output clamping 1CLP1, reclosing output clamping 1CLP2 virtual connections or leakage put into, then trip protection output clamping 1CLP1, weight
The lower end binding post of combined floodgate output clamping 1CLP2 does not all have electricity, i.e., do not export input voltage signal.Therefore, monitoring arrangement is using guarantor
Shield tripping operation output clamping 1CLP1, the lower end binding post of reclosing output clamping 1CLP2 judge protection device for negative electricity or positive electricity
Whether pressing plate puts into.
In monitoring arrangement, judged by main control module, when the light coupling relay of voltage translation circuit is turned on, output
Conducting voltage signal, conducting voltage signal is through master control module judges, main control module outputting drive voltage signal, as shown in figure 5, driving
Dynamic voltage signal is connected to the input anode of the light coupling relay OP3 in State- output loop, light coupling relay OP3 output states
Voltage signal.When the light coupling relay OP3 of voltage translation circuit ends, without conducting voltage signal output, without driving voltage letter
Number output, State- output loop output input fault-signal.
To sum up, the monitoring arrangement of the present embodiment based on single-chip microcomputer as shown in fig. 6, with main control module as core is judged, carried out
Realize, main control module connection negative electricity conversing circuits, positive electricity conversing circuits, State- output loop, negative electricity conversing circuits, positive electricity conversion
Loop is respectively provided with trip protection output clamping monitoring input, reclosing output clamping monitoring input, State- output loop
It is provided with state output end, common port.Monitoring arrangement is additionally provided with power input and power module.During implementation, protection is filled
The lower end binding post for putting tripping operation output clamping or reclosing output clamping is connected to monitoring arrangement, and by negative electricity modular converter or just
Electric modular converter after main control module is just established by cable, then outputs function, through State- output loop extremely to main control module by it
Measure and control device.
Above-described embodiment is intended merely to the explanation present invention, and is not used as limitation of the invention.As long as according to this hair
Bright technical spirit, is changed, modification etc. will all fall in the range of claim of the invention to above-described embodiment.
Claims (8)
1. a kind of monitoring method of relay protection outlet pressing plate, it is characterised in that obtain trip protection output clamping, reclosing and go out
The input voltage signal of the lower end connecting pole of mouth pressing plate, when input voltage signal reflection trip protection output clamping, reclosing go out
When mouth pressing plate is for input, output input status information；When input voltage signal reflection trip protection output clamping, reclosing outlet
When pressing plate is for leakage input or virtual connection, without output input voltage signal；Relay protection outlet pressing plate is monitored by putting into status information
Input state.
2. the monitoring method of relay protection outlet pressing plate according to claim 1, it is characterised in that trip protection outlet pressure
Plate, the lower end connecting pole of reclosing output clamping connect voltage translation circuit respectively, and voltage translation circuit sets light coupling relay；
When trip protection output clamping, reclosing output clamping are for input, output input voltage signal, light coupling relay conducting is entered
And export input status information；When trip protection output clamping, reclosing output clamping are for leakage input or virtual connection, thrown without output
Enter voltage signal, light coupling relay cut-off, output input fault-signal.
3. the monitoring method of relay protection outlet pressing plate according to claim 2, it is characterised in that voltage translation circuit bag
Negative electricity conversing circuits, positive electricity conversing circuits are included, the conducting and cut-off of light coupling relay are controlled by the break-make of the triode for cascading.
4. the monitoring method of relay protection outlet pressing plate according to claim 3, it is characterised in that negative electricity conversing circuits bag
Two NPN triodes of cascade are included, the input cathode of the light coupling relay of negative electricity conversing circuits connects the current collection of NPN triode
Pole；Positive electricity conversing circuits include a NPN triode, the input cathode connection NPN of the light coupling relay of positive electricity conversing circuits
The colelctor electrode of triode.
5. the monitoring method of relay protection outlet pressing plate according to claim 2, it is characterised in that trip protection outlet pressure
Plate, reclosing output clamping lower end connecting pole input when, respectively export negative electricity, positive electricity.
6. the monitoring method of relay protection outlet pressing plate according to claim 5, it is characterised in that trip protection outlet pressure
When plate is for input, control power supply negative electricity closes position auxiliary node, tripping operation guard relay and protection and jumps by breaking coil, breaker
Lock output clamping, the lower end binding post for making trip protection output clamping is negative electricity.
7. the monitoring method of relay protection outlet pressing plate according to claim 5, it is characterised in that reclosing output clamping
During for input, control power supply positive electricity makes coincidence by tripping position relay, combined floodgate guard relay and reclosing output clamping
The lower end binding post of lock output clamping is positive electricity.
8. the monitoring method of relay protection outlet pressing plate according to claim 2, it is characterised in that work as voltage translation circuit
Light coupling relay when turning on, export conducting voltage signal, conducting voltage signal through master control module judges, drive by main control module output
Dynamic voltage signal, drive voltage signal is connected to the input anode of the light coupling relay in State- output loop, light coupling relay
Output state voltage signal；It is electric without driving without conducting voltage signal output when the light coupling relay of voltage translation circuit is ended
Pressure signal output, State- output loop output input fault-signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187709.0A CN106841876B (en) | 2017-03-27 | 2017-03-27 | A kind of monitoring method of relay protection outlet pressing plate |
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|---|---|---|---|
| CN201710187709.0A CN106841876B (en) | 2017-03-27 | 2017-03-27 | A kind of monitoring method of relay protection outlet pressing plate |
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| CN106841876A true CN106841876A (en) | 2017-06-13 |
| CN106841876B CN106841876B (en) | 2019-07-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109782094A (en) * | 2019-02-14 | 2019-05-21 | 南京汇创电力科技有限公司 | A kind of relay protection tripping output clamping in-service monitoring method |
| CN111458633A (en) * | 2020-04-28 | 2020-07-28 | 广东电网有限责任公司揭阳供电局 | Tripping and closing monitoring circuit and fault alarming method |
| CN112904115A (en) * | 2021-01-20 | 2021-06-04 | 成都可为科技股份有限公司 | Pressing plate state monitoring circuit and monitoring method |
| CN112908747A (en) * | 2020-11-11 | 2021-06-04 | 国家电网有限公司 | Novel relay protection tripping outlet pressing plate capable of preventing intelligent mis-throw |
| CN115267484A (en) * | 2022-05-27 | 2022-11-01 | 国网江苏省电力有限公司南通供电分公司 | Fault monitoring method and system for relay protection operation circuit |
| CN116381396A (en) * | 2023-06-05 | 2023-07-04 | 广东电网有限责任公司佛山供电局 | Intelligent monitoring system for transformer substation outlet pressing plate |
| CN116774629A (en) * | 2023-06-16 | 2023-09-19 | 国网江苏省电力有限公司泰州供电分公司 | Intelligent monitoring module and method for relay protection outlet loop number |
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| CN109782094A (en) * | 2019-02-14 | 2019-05-21 | 南京汇创电力科技有限公司 | A kind of relay protection tripping output clamping in-service monitoring method |
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| CN112908747A (en) * | 2020-11-11 | 2021-06-04 | 国家电网有限公司 | Novel relay protection tripping outlet pressing plate capable of preventing intelligent mis-throw |
| CN112908747B (en) * | 2020-11-11 | 2022-08-12 | 国家电网有限公司 | Intelligent novel relay protection tripping outlet pressing plate capable of preventing accidental switching |
| CN112904115A (en) * | 2021-01-20 | 2021-06-04 | 成都可为科技股份有限公司 | Pressing plate state monitoring circuit and monitoring method |
| CN115267484A (en) * | 2022-05-27 | 2022-11-01 | 国网江苏省电力有限公司南通供电分公司 | Fault monitoring method and system for relay protection operation circuit |
| CN116381396A (en) * | 2023-06-05 | 2023-07-04 | 广东电网有限责任公司佛山供电局 | Intelligent monitoring system for transformer substation outlet pressing plate |
| CN116381396B (en) * | 2023-06-05 | 2023-10-27 | 广东电网有限责任公司佛山供电局 | Intelligent monitoring system for transformer substation outlet pressing plate |
| CN116774629A (en) * | 2023-06-16 | 2023-09-19 | 国网江苏省电力有限公司泰州供电分公司 | Intelligent monitoring module and method for relay protection outlet loop number |
| CN116774629B (en) * | 2023-06-16 | 2024-01-23 | 国网江苏省电力有限公司泰州供电分公司 | Intelligent monitoring module and method for relay protection outlet loop number |
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| CN106841876B (en) | 2019-07-09 |
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