CN102393506A - Monitoring system of tripping pulse of breaker - Google Patents
Monitoring system of tripping pulse of breaker Download PDFInfo
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- CN102393506A CN102393506A CN2011103645546A CN201110364554A CN102393506A CN 102393506 A CN102393506 A CN 102393506A CN 2011103645546 A CN2011103645546 A CN 2011103645546A CN 201110364554 A CN201110364554 A CN 201110364554A CN 102393506 A CN102393506 A CN 102393506A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000004044 response Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 15
- 238000001914 filtration Methods 0.000 description 5
- 230000009191 jumping Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention discloses a monitoring system of a tripping pulse of a breaker. The system comprises a tripping pulse monitor and a tripping signal reader. The tripping signal reader reads monitored tripping generation time and a monitored tripping pulse width from the tripping pulse monitor as well as converts the read tripping generation time and the read tripping pulse width into GPS time service time to carry out displaying; in order to solve a breaker's non-fault trip accident without a protection action signal, it can be rapidly discriminated that whether the breaker's tripping action is caused by a secondary circuit fault or by itself reason, so that a tripping reason can be determined; and thus, a corresponded measure is taken to enable the breaker to work normally again. The monitoring system has characteristics of small and exquisite appearance, low power dissipation, and maintenance-free property; besides, the monitoring system can be installed without need of power failure; and monitoring points can be arranged reasonably and a fault searching range can be rapidly and effectively reduced. Moreover, the tripping signal reader is utilized to read data related to tripping from the tripping pulse monitor in a wireless communication mode to conveniently carry out an analysis and comparison, so that the fault can be eliminated rapidly and safe operation of the system can be guaranteed.
Description
Technical field
the present invention relates to a kind of circuit breaker trip pulse signal monitoring system.
Background technology
electric system mesohigh isolating switch is stolen to jump and is happened occasionally, and has brought certain harm for security of system stable operation.Generally causing isolating switch to steal the reason of jumping has two aspects, and the one, the tripping operation that the mechanical fault of breaker mechanism itself causes, the 2nd, the tripping operation that secondary circuit failure causes.Owing to do not have corresponding tripping operation pulse monitoring equipment with writing function at each electric loop that possibly cause circuit breaker trip; Can't reliably distinguish after often making isolating switch take place to jump steathily is the jumping steathily that mechanism's reason causes; Still stealing that secondary circuit failure causes jumped; The reason of jumping is stolen in the area examination of wasting time and energy, and the efficient of fixing a breakdown is low.
Summary of the invention
the purpose of this invention is to provide a kind of circuit breaker trip pulse monitoring system that helps to get rid of fast the tripping operation fault.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of circuit breaker trip pulse monitoring system is installed on the secondary trip loop, it is characterized in that, comprising:
The tripping operation pulse monitors; It comprises current transformer; Through the trip signal in this current transformer monitoring breaker secondary trip loop; This tripping operation pulse monitors writes down the related data of tripping operation generation and also preserves, and wherein said related data comprises that the moment and the pulse width that trips take place in tripping operation
trip signal reader, its inside has GPS time service module, and this trip signal reader reads described related data and is converted into the GPS time service time from described tripping operation pulse monitors through communication and shows.
wherein; Described tripping operation pulse monitors comprises first microcontroller, insert this first microcontroller, first real-time timepiece chip and be used to realize first infrared transceiver module of radio communication; Current signal that described current transformer monitors involves that the full-wave rectification amplifying circuit handles that the back is translated into the Transistor-Transistor Logic level signal by a triode and the external interrupt interface of delivering to described first microcontroller through low pass filtered, described first microcontroller record and time of preserving the interrupt response that trip signal causes with the secondary trip loop because the time interval of energising and caused twice interrupt response of break impulse.
wherein, described current transformer adopts open type magnetic induction probe to satisfy the installation that do not have a power failure.
wherein, described tripping operation pulse monitors comprises button and pilot lamp.
wherein; Described trip signal reader comprises second microcontroller, insert second real-time timepiece chip of this second microcontroller and second infrared transceiver module, storer and the LCD display module that is complementary with described first infrared transceiver module, and described trip signal reader reads through first, second infrared transceiver module and converts the GPS time service time into after the trip related data of preserving in the described tripping operation pulse monitors and show through described LCD display module.
wherein, described storer is selected EEPROM for use.
wherein, described trip signal reader comprises trip test signal generating module, button and pilot lamp.
The existing beneficial effect for prior art of
the present invention is: this monitor has that profile is small and exquisite, low in energy consumption, the characteristics of freedom from repairs; Adapt to the characteristics that do not have a power failure and install; The reasonable Arrangement monitoring point can fast and effeciently dwindle the troubleshooting scope, utilizes the trip signal reader from the tripping operation pulse monitors, to read trip related data so that analyse and compare through the mode of radio communication; With rapidly removing faults, the safeguards system safe operation.
Description of drawings
Accompanying drawing 1 is the theory diagram of tripping operation pulse monitors in the circuit breaker trip pulse monitoring system of the present invention;
Accompanying drawing 2 is the theory diagram of trip signal reader in the circuit breaker trip pulse monitoring system of the present invention;
Accompanying drawing 3 is connected synoptic diagram for real-time timepiece chip in the tripping operation pulse monitors with the hardware of single-chip microcomputer;
Accompanying drawing 6 is that the GPS module is connected synoptic diagram with the hardware of single-chip microcomputer in the trip signal reader;
Accompanying drawing 7 is that EEPROM is connected synoptic diagram with the hardware of single-chip microcomputer in the trip signal reader;
Accompanying drawing 8 is that the MOSFET relay is connected synoptic diagram with the circuit hardware of single-chip microcomputer in the trip signal reader;
Accompanying drawing 9 is the inner main program flow chart of tripping operation pulse monitors;
Accompanying drawing 10 is the inner tripping operation monitoring of tripping operation pulse monitors interrupt routine process flow diagram;
Accompanying drawing 11 interrupts the degree process flow diagram for tripping operation pulse monitors button;
Accompanying drawing 12 is the inner main program flow chart of trip signal reader;
accompanying drawing 13 is a trip signal reader button interrupt routine process flow diagram.
Embodiment
Below in conjunction with embodiment shown in the drawings technical scheme of the present invention is done following detailed description the in detail:
a kind of circuit breaker trip pulse monitoring system; Comprise tripping operation pulse monitors and trip signal reader two parts, the tripping operation pulse monitors comprises current transformer, through the trip signal in this current transformer monitoring breaker secondary trip loop; The related data that this tripping operation pulse monitors record tripping operation takes place is also preserved; Wherein related data comprises that tripping operation takes place constantly and the tripping operation pulse width, and trip signal reader inside has GPS time service module, and this trip signal reader reads related data and is converted into the GPS time service time from the tripping operation pulse monitors through communication and shows; Steal the jumping incident for the isolating switch of unprotect actuating signal; Can screen this circuit breaker trip fast is to be caused by secondary circuit failure, is still caused by the reason of breaker mechanism own, if the secondary circuit failure cause is through reasonably arranging the monitoring point; Can dwindle seek scope effectively; Near the trouble spot, improved the efficient of fixing a breakdown effectively fast, for the normal operation of electric system provides safeguard.
theory diagram shown in accompanying drawing 1; The tripping operation pulse monitors comprises first microcontroller, inserts this first microcontroller, first real-time timepiece chip and is used to realize first infrared transceiver module of radio communication; The low pass filtered of passing through the current signal that current transformer monitors involves the full-wave rectification amplifying circuit handles the external interrupt interface that afterwards is translated into the Transistor-Transistor Logic level signal by a triode and delivers to first microcontroller; The time of the interrupt response that first microcontroller record and preservation trip signal cause and secondary trip loop are because the time interval of energising and caused twice interrupt response of break impulse; Current transformer adopts open type magnetic induction probe to satisfy the installation that do not have a power failure, and the tripping operation pulse monitors comprises button and pilot lamp; Theory diagram shown in accompanying drawing 2; The trip signal reader comprises second microcontroller, inserts second real-time timepiece chip of this second microcontroller and second infrared transceiver module, storer and the LCD display module that is complementary with first infrared transceiver module; The trip signal reader reads through first, second infrared transceiver module and converts the GPS time service time into after the trip related data that tripping operation preserves in the pulse monitors and show through the LCD display module; Storer is selected EEPROM for use, and the trip signal reader comprises trip test signal generating module, button and pilot lamp.
The hardware components embodiment:
(1), tripping operation pulse monitors:
(1), first microcontroller are selected the super low-power consumption MSP430F2132 of TI company single-chip microcomputer for use; Band 8kB Program, 512kB SRAM and one group of IrDA interface and one group of I2C interface; WV 1.8-3.6V, low-power consumption mode can reach 0.1uA, is fit to battery power supply system.
(2), first real-time timepiece chip adopt the real-time timepiece chip of the M41T62 high-precision low-power consumption of ST company, and the time is accurate to 10ms, offers accurate calendar time of system, and the low-power consumption mode electric current is 0.35uA.Serial line interface is supported the I2C bus, is connected shown in accompanying drawing 3 with the first microcontroller hardware.
) (3), first infrared transceiver module adopt the GP2W0110YPS infrared transceiver module of SHARP company.This module volume is little, low-power consumption, and the off state electric current is not more than 0.1uA; Meet irDA1.2 serial infrared transmission standard; Its highest infrared transmission speed can reach 115.2kbit/s, can directly be connected with the first microcontroller IrDA interface, does not need the coding/decoding chip; Can realize transmission and reception to data, hardware connects shown in accompanying drawing 4.
(4), button and pilot lamp: adopt a free-standing button; Two LED lights (red and green) have single-chip microcomputer directly to drive; Press the time of unclamping according to button and confirm three kinds of different conditions; Be respectively the data transmit status, data receiving state and data erase state.
(5), tripping operation pulse induction module be by current transformer, low-power consumption amplifier, filtering circuit and triode composition.Low-power consumption amplifier MAX4474 is under the state of no signal, and working current is less than 0.8uA.After current transformer is responded to the pulse signal that trip(ping) circuit is switched on and the transient current of the moment of cutting off the power supply is switched on and cut off the power supply; Convert the Transistor-Transistor Logic level signal that first microcontroller can be recognized into through LPF, full-wave rectification amplification and triode, trigger first microcontroller and interrupt.Time of this interrupt response of first microcontroller monitoring and by just measuring trip(ping) circuit on the secondary circuit the trip time and the pulsewidth of pulse generation the interval time that twice first microcontrollers that the pulse of trip(ping) circuit energising and outage causes interrupt.Circuit diagram is shown in accompanying drawing 5, and wherein H1 is a current transformer, and U1-A and U1-B are MAX4474, and D1 is a diode, and Q1 is a triode.
(2), trip signal reader:
(1) second microcontroller is selected the super low-power consumption MSP430F248 of TI company single-chip microcomputer for use, band 48kB Program, 4096kB SRAM and one group of IrDA interface; Two groups of I2C interfaces; One group of USCI interface, maximum 48 I/O interfaces, WV 1.8-3.6V; Low-power consumption mode can reach 0.1uA, is fit to battery power supply system.
) (2) first real-time clocks adopt the M41T62 chip of ST company, and second infrared module adopts the GP2W0110YPS infrared data transceiver module of SHARP company, and the hardware connection layout is equal to accompanying drawing 3 and accompanying drawing 4.
) (3) GPS time service module integrated RF radio frequency chip, baseband chip and core CPU; And add the related peripheral circuit and an integrated circuit forming; Support the GPS calibration that integrates with of accurate 1pps output signal; The synchronous error of its pulse front edge and UTC is no more than 1 μ s, realize to system accurately to the time, reach the electric system permissible accuracy.Support serial ports 9600 baud rate communications, be connected shown in accompanying drawing 6 with the hardware of second microcontroller.
) (4) LCD module employing specification 240*160, be connected with the second microcontroller parallel port, receive data presentation, perhaps other demonstration of system.
) (5) EEPROM (Electrically Erasable Programmable); EEPROM--the storage chip that data are not lost after a kind of power down; The infrared data that receive are preserved, so that later checking.EEPROM adopts AT24C08 chip commonly used, can store the data of about 80 groups of tripping operation monitors, and serial line interface is supported the I2C bus, is connected shown in accompanying drawing 7 with the second microcontroller hardware.
) (6) button is free-standing button, the time of using button to accomplish system is provided with, data transmit-receive, data storage or wipe self check or the like.Pilot lamp adopts two LED lights (red and green), directly drives with microcontroller, and the different conditions of system is indicated.
(7) trip test signal circuit, shown in accompanying drawing 8, by high capacity cell, resistance, the MOSFET relay and second microcontroller are formed.The MOSFET relay is selected Omron G3VM-21HR model for use, can realize that maximum 2.5A opens and closes electric current.Can the pulse current when second microcontroller trips through the simulation of control MOSFET relay be used to check the trip(ping) circuit pulse monitors monitor trip signal.System's correct time when the second microcontroller meter relay is closed simultaneously, and then the data of reception trip(ping) circuit pulse monitors, whether two times compare, just can check out the work of trip(ping) circuit pulse monitors normal.
) (8) hardware anti-interference measure: mainly through low-pass filter circuit with add ground shield filtering carried out in some clutters and other interference, can reach good interference free performance.Low-pass filter circuit sees in the accompanying drawing 5 that current transformer passes through low-pass filter circuit after detecting pulse, some high-frequency signals of filtering, and full-wave rectification is amplified again.In addition, circuit can prevent that other equipment are to system interference after adding the ground connection radome.Two kinds of hardware anti-interference measures can reach anti-interference purpose basically, add some Filtering Processing are set on the software again.With the interference free performance that improves system greatly.
The software section embodiment:
(1), tripping operation pulse monitors:
tripping operation pulse monitors mainly is made up of master routine and two interrupt service routines.Master routine mainly is to carry out initialization and initializing peripheral equipment, gets into low-power consumption mode then, and interrupt service routine comprises tripping operation monitoring interrupt service routine and button interrupt service routine.The tripping operation interrupt service routine mainly is time and a pulsewidth of accomplishing record tripping operation pulse generation.The button interrupt routine is then mainly accomplished transmitting-receiving to data, is wiped and system's setting.Process flow diagram is shown in accompanying drawing 9, accompanying drawing 10 and accompanying drawing 11.
(2), trip signal handheld reader:
trip signal handheld reader system program will be made up of master routine and button interrupt routine.
(1), master routine are accomplished the initialization of equipment and LCD are shown, wait for button interrupt response, shown in accompanying drawing 12.
(2), button interrupt routine, shown in accompanying drawing 13, by confirming that key gets into master menu, key is selected the function that will be provided with up and down, press acknowledgement key again and gets into, and right and left key is selected the position of setting, withdraws from by return key like need.
(3) Software Anti-interference measure: at first through detecting the current transformer induction trip(ping) circuit energising and the individual pulse deration of signal of the moment of cutting off the power supply, filtering solves high frequency interference less than the pulse signal of 0.5ms pulsewidth; Next judges whether greater than 20ms through detecting current transformer induction trip(ping) circuit energising and twice pulse signal width of the moment of cutting off the power supply, promptly judges whether to be normal sub-gate signal; Again through the operation of software " house dog " timing supervision program loop is set, get into endless loop at last, then force system reset, system recovery is normally moved if exceed the known cycle sets time.
system of the present invention is made up of monitor and reader two parts, and wherein, monitor has that profile is small and exquisite, low in energy consumption, the characteristics of freedom from repairs; Adapt to the characteristics that do not have a power failure and install; The reasonable Arrangement monitoring point can fast and effeciently dwindle the troubleshooting scope, utilizes the trip signal reader from the tripping operation pulse monitors, to read trip related data so that follow-up the analyses and comparison through the mode of radio communication; With rapidly removing faults, the safeguards system safe operation.
the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a circuit breaker trip pulse monitoring system is installed on the secondary trip loop, it is characterized in that, comprising:
The tripping operation pulse monitors; It comprises current transformer; Through the trip signal in this current transformer monitoring breaker secondary trip loop; This tripping operation pulse monitors writes down the related data of tripping operation generation and also preserves, and wherein said related data comprises that the moment and the pulse width that trips take place in tripping operation
Trip signal reader, its inside have GPS time service module, and this trip signal reader reads described related data and is converted into the GPS time service time from described tripping operation pulse monitors through communication and shows.
2. circuit breaker trip pulse monitoring system according to claim 1; It is characterized in that: described tripping operation pulse monitors comprises first microcontroller, insert this first microcontroller, first real-time timepiece chip and be used to realize first infrared transceiver module of radio communication; Current signal that described current transformer monitors involves that the full-wave rectification amplifying circuit handles that the back is translated into the Transistor-Transistor Logic level signal by a triode and the external interrupt interface of delivering to described first microcontroller through low pass filtered, described first microcontroller record and time of preserving the interrupt response that trip signal causes with the secondary trip loop because the time interval of energising and caused twice interrupt response of break impulse.
3. circuit breaker trip pulse monitoring system according to claim 1 and 2 is characterized in that: described current transformer adopts open type magnetic induction probe to satisfy the installation that do not have a power failure.
4. circuit breaker trip pulse monitoring system according to claim 3 is characterized in that: described tripping operation pulse monitors comprises button and pilot lamp.
5. circuit breaker trip pulse monitoring system according to claim 2; It is characterized in that: described trip signal reader comprises second microcontroller, insert second real-time timepiece chip of this second microcontroller and second infrared transceiver module, storer and the LCD display module that is complementary with described first infrared transceiver module, and described trip signal reader reads through first, second infrared transceiver module and converts the GPS time service time into after the trip related data of preserving in the described tripping operation pulse monitors and show through described LCD display module.
6. circuit breaker trip pulse monitoring system according to claim 5, it is characterized in that: described storer is selected EEPROM for use.
7. circuit breaker trip pulse monitoring system according to claim 5 is characterized in that: described trip signal reader comprises trip test signal generating module, button and pilot lamp.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103744016A (en) * | 2013-12-27 | 2014-04-23 | 国家电网公司 | High-voltage breaker energy-storing motor time testing apparatus |
| CN107192976A (en) * | 2017-07-17 | 2017-09-22 | 国网重庆市电力公司电力科学研究院 | A kind of long-distance intelligent ammeter trip signal detection method and system |
| CN109343411A (en) * | 2018-10-31 | 2019-02-15 | 广东电网有限责任公司 | On-load voltage regulation mechanism controls circuit monitoring system |
| CN111474461A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Circuit device for detecting failure of switch of functional safety product |
| CN111934291A (en) * | 2020-07-21 | 2020-11-13 | 广东电网有限责任公司 | Method for judging circuit breaker tripping due to stealing and electrical tripping |
| CN112285544A (en) * | 2020-09-20 | 2021-01-29 | 广东韶钢松山股份有限公司 | Breaker state detection method and device, computer equipment and storage medium |
| CN113253105A (en) * | 2021-04-02 | 2021-08-13 | 深圳供电局有限公司 | High-voltage switch action characteristic measuring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744016A (en) * | 2013-12-27 | 2014-04-23 | 国家电网公司 | High-voltage breaker energy-storing motor time testing apparatus |
| CN107192976A (en) * | 2017-07-17 | 2017-09-22 | 国网重庆市电力公司电力科学研究院 | A kind of long-distance intelligent ammeter trip signal detection method and system |
| CN109343411A (en) * | 2018-10-31 | 2019-02-15 | 广东电网有限责任公司 | On-load voltage regulation mechanism controls circuit monitoring system |
| CN111474461A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Circuit device for detecting failure of switch of functional safety product |
| CN111934291A (en) * | 2020-07-21 | 2020-11-13 | 广东电网有限责任公司 | Method for judging circuit breaker tripping due to stealing and electrical tripping |
| CN111934291B (en) * | 2020-07-21 | 2022-07-26 | 广东电网有限责任公司 | Method for judging circuit breaker tripping due to stealing and electrical tripping |
| CN112285544A (en) * | 2020-09-20 | 2021-01-29 | 广东韶钢松山股份有限公司 | Breaker state detection method and device, computer equipment and storage medium |
| CN113253105A (en) * | 2021-04-02 | 2021-08-13 | 深圳供电局有限公司 | High-voltage switch action characteristic measuring system |
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| CN102393506B (en) | 2014-02-12 |
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