CN103353556B - Protective relaying device pressing plate outlet logic detection device - Google Patents
Protective relaying device pressing plate outlet logic detection device Download PDFInfo
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Abstract
The present invention relates to a kind of protective relaying device pressing plate outlet logic detection device, it is shown by protective relaying device output clamping ms level momentary voltage pulse testing circuit, reaying protection test platform dry contact state detection circuit, microprocessor, driving, timing and sound light alarming circuit and power supply instruction and ground connection broken string indicating circuit form；The outfan of described protective relaying device output clamping ms level momentary voltage pulse testing circuit and reaying protection test platform dry contact state detection circuit connects the respective input of microprocessor respectively, and the output termination of described microprocessor drives, timing shows and the input of sound light alarming circuit；The input termination of the instruction of described voltage and ground connection broken string indicating circuit drives, timing shows and the outfan of sound light alarming circuit.It is an advantage of the invention that accuracy in detection and highly sensitive, wiring and easy and simple to handle.
Description
Technical field
The present invention relates to a kind of protective relaying device pressing plate outlet logic detection device.
Background technology
At present, relay protection is professional when carrying out protective relaying device and checking and accepting with one-hundred-percent inspection work, protective relaying device
The outlet logic detection of pressing plate is an important and loaded down with trivial details content.Especially 500kV main transformer protection equipment, face height, in,
Low-pressure side and the tetrameric ground distance of public winding, phase to phase impedance, zero sequence direction, zero sequence are crossed the multiple principle standby such as stream and are protected
Protecting, the back-up protection of each principle in every side divides again I, II, III 3 sections, and every section is divided again 1,2,3 three time limits, and this just constitutes master
Become the Tripping matrix logic of protection.Due to the configuration of relay protection dual, a main transformer has two set main transformer protections, and institute is protected
Trip Logic up to 200 kinds.The when of protection inspection, if the complete 200 kinds of logics of complete verification, need to simulate each logic
Fault, and measure all tripping operation output clampings simultaneously.At least need two people, add fault simulation amount, while holding general-purpose
More than 10 output clamping measured one by one by table, the most time-consuming one day.In the face of the verification that this workload is bigger, continue to use traditional dividing
Side classification, the out-of-date methods that segmentation timesharing limits, logic pressing plate one by one is checked successively one by one, this frequency, repeatability operate not only
Expend substantial amounts of manpower, time, and the most intuitively, the most tired causing make mistakes, had a strong impact on overhaul efficiency and progress.
If using the equipment such as reaying protection test platform, such as Beijing rich electricity, Guangzhou Onlly, the most simply possess eight stem graftings
Point input function, but in the case of main transformer maintenance prerun, pressing plate upper and lower port is charged, and voltage suitable for reading is-110V, end opening
Voltage is+110V.Safety measure is it is not recommended that cutting-off controlling power supply carries out overhauling prerun.So, conventional reaying protection test platform is not
It is suitable for measuring the output pulse of charged pressing plate, the most commonly used artificial hand-held circuit tester inspection wasted time and energy in working at ordinary times
The method of pressure measurement plate exit.
Summary of the invention
The technical problem to be solved is to provide a kind of accuracy in detection and highly sensitive, wiring and easy and simple to handle
Protective relaying device pressing plate outlet logic detection device.
The present invention solves what concrete technical problems was used technical scheme:
A kind of protective relaying device pressing plate outlet logic detection device, by the protective relaying device output clamping instantaneous electricity of ms level
Pressure pulse-detecting circuit, reaying protection test platform dry contact state detection circuit, microprocessor, driving, timing show and acousto-optic
Warning circuit and power supply instruction and ground connection broken string indicating circuit form；Described protective relaying device output clamping ms level instantaneous voltage
The outfan of pulse-detecting circuit and reaying protection test platform dry contact state detection circuit connects the most defeated of microprocessor respectively
Entering end, the output termination of described microprocessor drives, timing shows and the input of sound light alarming circuit；Described power supply instruction and
The input termination of ground connection broken string indicating circuit drives, timing shows and the outfan of sound light alarming circuit.
Beneficial effects of the present invention is as follows:
(1) in the case of not having a power failure, the disposable tripping operation outlet of detection 10 the most simultaneously, it is to avoid protection act, open
Close transmission number of times, prevent from switching the frequent deciliter damage caused, remove switch from and suppress the waiting time, shorten relay protection maintenance
The time of prerun.
(2) wiring of this device is safe and efficient, simple, needs two people in the past and spends to complete half a day simultaneously
Inspection work, can have people's complete independently at present in 2 hours, eliminate protective relaying device and be passed through fault simulation
Need the work of people's conjunction measuring output clamping while amount, significantly reduce the work that conventional each pressing plate is measured one by one
Amount.
(3) this device provides tripping operation outlet sound and light alarm, makes inspection work more directly perceived, efficiently.
(4) this device provides ten passages to trip and exports independent clocking capabilitys, timing digital display totally four, such as 00.00, and timing
Least unit 0.01s, timing range 0.01s-99.99s, it can more accurate recording protection act to tripping operation outlet time
Between, further precise verification relay protection Trip Logic, and the correctness of transformer tripping matrix.
(5) this device accuracy in detection and sensitivity are higher, it is adaptable to the verification of main transformer protection Tripping matrix logic, also
It is applicable to the inspection work of multiple tripping operation outlet such as bus protection, route protection, protection device for circuit breaker, substantially increases electric power
The inspection progress of system relay protection entirety and efficiency.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention；
Fig. 3 is the workflow diagram of the present invention.
Detailed description of the invention
From the embodiment described in Fig. 1-3, the present embodiment is by protective relaying device output clamping ms level instantaneous voltage arteries and veins
Rush testing circuit, reaying protection test platform dry contact state detection circuit, microprocessor, driving, timing show and sound and light alarm
Circuit and power supply instruction and ground connection broken string indicating circuit form；Described protective relaying device output clamping ms level momentary voltage pulse
The outfan of testing circuit and reaying protection test platform dry contact state detection circuit connects the respective input of microprocessor respectively,
The output termination of described microprocessor drives, timing shows and the input of sound light alarming circuit；The instruction of described power supply and ground connection
The input termination of broken string indicating circuit drives, timing shows and the outfan of sound light alarming circuit.
Described protective relaying device output clamping ms level momentary voltage pulse testing circuit is by the identical branch road of 10 line structures
Composition, wherein first route voltage comparator U1, photoelectrical coupler N1, resistance R1-1 R1-4, electric capacity C1-1, diode
D1-1 and voltage detecting contact J1 composition；Described voltage detecting contact J1 connects the anti-phase input of voltage comparator U1 through resistance R1-2
End, resistance R1-3 and diode D1-1 connects and is followed by between the inverting input and ground of voltage comparator U1, voltage comparator
Input 2 foot of the output termination photoelectrical coupler N1 of U1, the power end of voltage comparator U1 and photoelectrical coupler N1 connects respectively
VCC2, the in-phase input end of voltage comparator U1 meets+2.5V, electric capacity C1-1 through resistance R1-1 and is connected on the homophase of voltage comparator U1
Between input and inverting input；The 3 foot ground connection of described photoelectrical coupler N1, its 4 foot meets VCC through resistance R1-4；Wherein
10 route voltage comparator U10, photoelectrical coupler N10, resistance R10-1 R10-4, electric capacity C10-1, diode D10-1 and
Voltage detecting contact J10 forms.
When ms level momentary voltage pulse occurs in protective relaying device output clamping end opening, and voltage-to-ground is not less than
30V, the now timing of respective channel terminates.Each branch road instantaneous voltage detetion circuit all works alone, and now enters the 1st branch road
Row explanation:
When the voltage detected is more than the reference voltage of the in-phase input end of voltage comparator U1, U1 exports low-voltage,
Photoelectrical coupler N1 turns on, single-chip microcomputer U11 input low level；When the voltage detected is less than reference voltage, the high electricity of U1 output
Flat, photoelectrical coupler N1 ends, single-chip microcomputer U11 input high level.
Reaying protection test platform dry contact state detection circuit is by trigger terminal A and B, photo-coupler N11, resistance R11-
1 R11-4 composition；Described trigger terminal A connects photoelectric coupling through resistance R11-1 ground connection, described trigger terminal B through resistance R11-2
Input 2 foot of device N11, input 1 foot of described photoelectrical coupler N11 connects VCC2, described photoelectrical coupler through resistance R11-3
The 3 foot ground connection of N11, its 4 foot meets VCC through resistance R11-4.
When the dry contact of reaying protection test platform closes, trigger terminal A is connected with trigger terminal B, and optocoupler N11 turns on,
Single-chip microcomputer U11 input low level, otherwise input high level.
Described microprocessor is by single-chip microcomputer U11 and peripheral cell crystal X1 thereof, electric capacity C12-1 C12-3, resistance R12-1
Form with SR S1；Input 9 foot of described single-chip microcomputer U11 connects outfan 4 foot of photo-coupler N1, described single-chip microcomputer
Input 31 foot of U11 connects outfan 4 foot of photo-coupler N11, the crystal oscillator electricity of crystal X1 and electric capacity C12-2 C12-3 composition
Road is connected between 15 feet of single-chip microcomputer U11 and 16 feet, SR S1, resistance R12-1 and the reset circuit of electric capacity C12-1 composition
It is connected between 13 feet and the ground of single-chip microcomputer U11.
Described driving, timing show and sound light alarming circuit is made up of the passage that 10 line structures are identical, wherein the 1st passage by
Driving chip U12-1, timing chip U12-2, charactron U12-3, sound alarm circuit and optical alarm circuit composition；
The input 1-5 foot of described driving chip U12-1 connects the 43-47 foot of single-chip microcomputer U11, described driving chip respectively
The outfan 12-15 foot of U12-1 connects the DIG4-DIG1 foot of charactron U12-3 respectively；
The input 11-14 foot of described timing chip U12-2 connects outfan 39 foot of single-chip microcomputer U11,40 feet, 48 feet respectively
With 19 feet, the outfan 1-7 foot of timing chip U12-2 connects the A-G foot of charactron U12-3, the output of timing chip U12-2 respectively
15 feet are held to connect the DP foot of charactron U12-3；
Described optical alarm circuit is made up of LED 1-1 and resistance R14-1, LED 1-1 and electricity
Resistance R14-1 series connection is followed by between the DIG1 foot and DP foot of charactron U12-3；
Described sound alarm circuit is that each passage shares, and described sound alarm circuit is made up of buzzer F1 and resistance R13, buzzing
Device F1 connects with resistance R13 and is followed by between outfan 16 foot and the VCC of driving chip U12-1；
10th passage by driving chip U21-1, timing chip U21-2, charactron U21-3, LED 10-1,
Resistance R23-1 and the sound alarm circuit being made up of buzzer F1 and resistance R13 form.
The instruction of described power supply and ground connection broken string indicating circuit are by LED 11-LED12, resistance R24-R25 group
Become；The power indicating circuit being composed in series by LED 11 and resistance R24 is connected on the outfan of driving chip U21-1
Between 11 feet and VCC；The ground connection broken string indicating circuit being composed in series by LED 12 and resistance R25 is connected on driving core
Between outfan 10 foot and the ground of sheet U21-1.
The model of single-chip microcomputer U11 is STC12C5A32S2, and timing chip U12-2 uses shift register 74HC595, drives
The model of chip U12-1 is ULN2003.
In the present embodiment, VCC is+5V, and VCC2 is+15V.
The work process of the present invention is as follows:
During this device is applied at the scene, first earthing of casing line is connected firmly with grounding copper bar, then by respective channel
Voltage detecting contact be fastened at corresponding output clamping end opening, trigger terminal A, B are connected to the defeated of reaying protection test platform
Go out on terminal (i.e. a pair dry contact), be then turn on this installation's power source, and press involution button S1 and make timing digital display reset.When making
While adding fault simulation amount to this device with reaying protection test platform, a pair dry contact is relied on to make trigger terminal A, B close,
Starting this device clocking capability, now, the time of ten passages is when 00.00s starts to walk, until a certain Air conduct measurement is to size
For the potential pulse that+110V, time are several milliseconds, light and protect for one in light alarm lamp LED1-1 LED10-1
Holding, buzzer F1 sends a sound of " dripping ", i.e. having recorded on the time digital display screen of respective channel tripping operation outlet time
Between, unit is the second, minimum timing 0.01s.Other output clamping end openings are not detected by the passage of potential pulse and then continue timing,
Until respective channel detect size be+110V, the time be the potential pulse of several milliseconds, respective channel timing terminates,
Holding lighted by light alarm lamp.In this device work process, press involution button S1, then the time digital display screen of 10 passages is all returned
Zero, light alarm lamp extinguishes.
The operating ambient temperature of this device :-10 DEG C～+50 DEG C, when normally working, the power consumption of this device is not more than
40W.Additionally, the insulation resistance of this device is not less than 50M, ± 250V voltge surge (forceful electric power loop) can be born, including this device
Voltage contact and measure loop.Weak electrical loop can bear the voltge surge of 50V, including acousto-optic drive circuit and timing loop.
This device possesses 4 technical standards:
1, security performance: ten passages are to work alone, mutually isolated, will not occur string electrical phenomena.Detection voltage is strong
Electricity, does not results in the short circuit with ground wire, will not interfere with each other with light current yet, concatenate, it is ensured that between forceful electric power, between forceful electric power light current,
Isolation between forceful electric power and ground wire, more will not enter detected protective relaying device this installation's power source foldback；
2, detection voltage request: it is (universal that voltage detecting contact can replace wire clamp contact, U-shaped contact, pin hole contact
), to adapt to the upper and lower opening of variety classes pressing plate.When detection voltage is direct current+30V～+110V, it is possible to drive sound and light alarm to return
Road and timing loop.The voltage detected is less than+30V, and sound and light alarm loop and timing loop are not turned on, and detection voltage can
By escaping+30V and following；
3, time precision requires: time showing scope 00.00s～99.99s, precision 0.01s, error is at ± 0.01s.Catch
Catching the time of detection potential pulse, precision is 1ms；
4, on and off switch is that the automatic trip sky of currents match is opened, and electric power loop also arranges sizeable current fusing silk
(device), prevents personnel from injuring and crosses stream with device and burn.
Claims (1)
1. a protective relaying device pressing plate outlet logic detection device, it is characterised in that by protective relaying device output clamping ms
Level momentary voltage pulse testing circuit, reaying protection test platform dry contact state detection circuit, microprocessor, driving, timing show
Show and sound light alarming circuit and power supply instruction and ground connection broken string indicating circuit composition；Described protective relaying device output clamping ms level
The outfan of momentary voltage pulse testing circuit and reaying protection test platform dry contact state detection circuit connects microprocessor respectively
Respective input, the output termination of described microprocessor drives, timing shows and the input of sound light alarming circuit；Described electricity
The input termination of source instruction and ground connection broken string indicating circuit drives, timing shows and the outfan of sound light alarming circuit.
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| CN201310222866.2A CN103353556B (en) | 2013-06-06 | 2013-06-06 | Protective relaying device pressing plate outlet logic detection device |
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| CN201310222866.2A CN103353556B (en) | 2013-06-06 | 2013-06-06 | Protective relaying device pressing plate outlet logic detection device |
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| CN103353556A CN103353556A (en) | 2013-10-16 |
| CN103353556B true CN103353556B (en) | 2016-12-28 |
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| CN103399229B (en) * | 2013-07-30 | 2016-03-30 | 国家电网公司 | Device for protection outlet of relay protection proving installation |
| CN103901263A (en) * | 2014-04-22 | 2014-07-02 | 国家电网公司 | Pressing plate detection circuit and PCB |
| CN104237603A (en) * | 2014-08-28 | 2014-12-24 | 深圳供电局有限公司 | Relay protection multi-outlet pressing plate pulse voltage detection device |
| CN104267333A (en) * | 2014-10-21 | 2015-01-07 | 国家电网公司 | Detector for checking main transformer tripping protection logic loop |
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| CN106405410B (en) * | 2016-11-21 | 2024-04-26 | 广东电网有限责任公司肇庆供电局 | Relay protection outlet detection method, device and system |
| CN106841876B (en) * | 2017-03-27 | 2019-07-09 | 国网福建省电力有限公司 | A kind of monitoring method of relay protection outlet pressing plate |
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| CN108982946A (en) * | 2018-04-28 | 2018-12-11 | 深圳供电局有限公司 | Pressing plate potential change detection device based on protection action contact |
| CN111864894A (en) * | 2019-04-26 | 2020-10-30 | 中国南方电网有限责任公司 | Remote uninterrupted power transmission calibration method suitable for line protection device |
| CN110609190A (en) * | 2019-11-12 | 2019-12-24 | 国网宁夏电力有限公司石嘴山供电公司 | Relay protection device outlet checking instrument and method thereof |
| CN110824352B (en) * | 2019-11-28 | 2021-11-23 | 国网四川省电力公司攀枝花供电公司 | Relay protection logic checking device and method |
| CN110865261A (en) * | 2019-11-29 | 2020-03-06 | 国网四川省电力公司眉山供电公司 | Protection device outlet matrix calibrator and calibration method |
| CN111679147B (en) * | 2020-07-30 | 2024-10-25 | 内蒙古电力(集团)有限责任公司鄂尔多斯电业局 | Relay protection device outlet simulation display instrument |
| CN112444742B (en) * | 2020-11-09 | 2022-05-06 | 国网山东省电力公司信息通信公司 | Relay protection channel monitoring and early warning system |
| CN113866534A (en) * | 2021-08-25 | 2021-12-31 | 广东电网有限责任公司广州供电局 | Secondary circuit signal detection system |
| CN115549305B (en) * | 2022-10-27 | 2023-06-20 | 东方电子股份有限公司 | Pressing plate state detection system |
| 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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