CN201278010Y - Non-residual voltage monitoring recorder for lightning arrestor - Google Patents

Non-residual voltage monitoring recorder for lightning arrestor Download PDF

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Publication number
CN201278010Y
CN201278010Y CNU2008202217022U CN200820221702U CN201278010Y CN 201278010 Y CN201278010 Y CN 201278010Y CN U2008202217022 U CNU2008202217022 U CN U2008202217022U CN 200820221702 U CN200820221702 U CN 200820221702U CN 201278010 Y CN201278010 Y CN 201278010Y
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China
Prior art keywords
output terminal
lightning arrester
sensor
leakage current
unit
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Expired - Lifetime
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CNU2008202217022U
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Chinese (zh)
Inventor
叶德平
杨筱安
王宝刚
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Xian Shendian Electronics Co Ltd
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Xian Shendian Electronics Co Ltd
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Priority to CNU2008202217022U priority Critical patent/CN201278010Y/en
Application granted granted Critical
Publication of CN201278010Y publication Critical patent/CN201278010Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a residual pressure-free on-line monitoring and recording instrument for a lightning arrester, which comprises a sensor (1) connected to the grounding terminal of the lightning arrester, a signal processing circuit (2), a micro system on a chip (3) and an I/O device (4). The I/O device (4) comprises a display (401), a keyboard (402) and a system clock (403) connected with the port of the micro system on the chip (3); an overvoltage protection device (5) is also arranged at the output end of the sensor (1); and the signal processing circuit (2) comprises a leakage current signal hardware processing circuit (201) and an action current signal hardware processing circuit (202). The utility model solves the technical problems that the on-line monitor can generate additional residual voltage, is easy to influence the normal operation of the lightning arrester, and can not record the action time of the lightning arrester and the historical leakage current value in the background art, and has the advantages that the action time of a three-phase lightning arrester and the historical inquiry of the leakage current value can be supported, the maintenance is convenient, the operation is simple, and the like.

Description

Lightning arrester does not have residual voltage on-line monitoring registering instrument
Technical field:
The utility model relates to a kind of lightning arrester on-Line Monitor Device, and being specifically related to a kind of lightning arrester does not have residual voltage on-line monitoring registering instrument.
Background technology:
Existing lightning arrester is serially connected between arrester ground end and " the earth " at thread detector, belongs to primary equipment, in case damage then can seriously disturb the normal operation of lightning arrester.Because monitor inside is provided with metal oxide (MOV) valve block, metal oxide when lightning arrester moves (MOV) valve block can produce additional residual voltage, and additional residual voltage can be applied on the protected equipment, influences the insulating property of protected equipment; Metal oxide (MOV) valve block finally can cause monitor to damage also easily because of the humid air damage of making moist.The time that monitor can not write down lightning arrester action can not be write down the historical leakage current values of lightning arrester, is unfavorable for like this analyzing electric system internal cause superpotential and the reason that causes fault, can not assess the history run situation of lightning arrester accurately.Because existing lightning arrester on-line monitoring device can only be monitored a lightning arrester and because its physical construction and profile aspect, as be used for the ruuning situation that the monitoring of three-phase lightning protector in the switch cubicle then is difficult to observe lightning arrester.
Summary of the invention
The purpose of this utility model is to provide a kind of lightning arrester not have residual voltage on-line monitoring registering instrument, it has solved the normal operation that the on-line monitoring device in the background technology can produce additional residual voltage and easily influence lightning arrester, can not write down the time of lightning arrester action and the technical matters of historical leakage current values.
Technical solution of the present utility model is:
A kind of lightning arrester does not have residual voltage on-line monitoring registering instrument, comprise the sensor 1 that is arranged at the arrester ground end, be connected in the signal processing circuit 2 of sensor 1 output terminal, be connected in micro-system (SOC) 3 on the sheet of signal processing circuit 2 output terminals, and the I/O device 4 that is connected in micro-system on the sheet (SOC) 3 ports, described I/O device 4 comprises the LCD 401 and keyboard 402 that is connected with micro-system (SOC) 3 ports on the sheet.Described sensor 1 output terminal also is provided with overvoltage protection 5.
It is characterized in that:
Described signal processing circuit 2 is made up of leakage current signal hardware handles circuit 201 and action current signal hardware treatment circuit 202;
Described I/O device (4) also comprises the system clock (403) that is connected with micro-system (SOC) (3) port on the sheet.
Described leakage current signal hardware handles circuit 201 comprises the leakage current signal sampling unit 211 that is connected with sensor 1 output terminal, be connected in the signal amplification unit 221 of leakage current signal sampling unit 211 output terminals, be connected in real effective (RMS) converting unit 231 of signal amplification unit 221 output terminals and the signal amplification unit 241 that is connected to real effective (RMS) converting unit 231 output terminals, the output terminal of described signal amplification unit 241 is connected to the input port of micro-system 3 on the sheet;
Above-mentioned action current signal hardware treatment circuit 202 comprises the thunderbolt actuating signal current limliting unit 212 that is connected in sensor 1 output terminal, be connected in the optical isolator element 222 of thunderbolt actuating signal current limliting unit 212 output terminals, be connected in the delay unit 232 of optical isolator element 222 output terminals, the output terminal of described delay unit 232 is connected to the input port of micro-system 3 on the sheet.
The sensor 1 can be induction type does not have the residual voltage sensor.
The utlity model has advantage:
1. adopt induction type not have the residual voltage sensor, and between the lightning arrester without any the getting in touch of electricity, can not disturb the normal operation of lightning arrester, can not produce additional residual voltage, can not impact when safeguarding main line.
2. under humid climate, still can normally move, very strong to the adaptability of weather.
3. monitor the leakage current effective value of three-phase lightning protector in real time, write down monitor value every day one time, can support the historical query of three-phase lightning protector leakage current values.
4. monitor the action of three-phase lightning protector in real time, and the date of operation of recording and time, the three-phase lightning protector historical query of actuation time can be supported.
5. the data of registering instrument are recorded in the flash memory (FLASH) (can preserve more than 10 years under power-down conditions), and system clock adopts battery as backup battery (can power continuously more than 10 years).
6. monitoring information adopts LCD output, and information is directly perceived, and is simple to operate.
7. easy for installation, a no residual voltage monitoring and recording instrument can be monitored three lightning arresters, and mounting means is embedded installation, is very suitable for the monitoring of three-phase lightning protector in the switch cubicle.
Description of drawings
Fig. 1 is the theory diagram of the utility model on-line monitoring registering instrument;
Fig. 2 is leakage current signal treatment circuit figure in the utility model on-line monitoring registering instrument;
Fig. 3 is action current signal hardware treatment circuit figure in the utility model on-line monitoring registering instrument.
The drawing reference numeral explanation:
The 1-sensor; The 2-signal processing circuit, 201-leakage current signal hardware handles circuit, 211-leakage current signal sampling unit, 221-signal amplification unit, 231-converting unit, 241-signal amplification unit; 202-action current signal hardware treatment circuit, 212-thunderbolt actuating signal current limliting unit, 222-optical isolator element, 232-delay unit; Micro-system on the 3-sheet, 4-output unit, 401-display, 402-keyboard; The 403-system clock; The 5-overvoltage protection.
Embodiment
Referring to Fig. 1, the utility model lightning arrester does not have residual voltage on-line monitoring registering instrument, comprising: microprocessing systems 3 and I/O device 4 on sensor 1, signal processing circuit 2, the sheet; Sensor 1 is connected with the earth terminal of lightning arrester, and sensor 1 can adopt induction type not have the residual voltage sensor; The output terminal of sensor 1 inserts the input end of signal processing circuit 2, and the output terminal of signal processing circuit 2 inserts micro-system 3 on the sheet, and microprocessing systems 3 can adopt SPCE061A, SPCE062, SPMC75 series etc. on the sheet; The output terminal of micro-system 3 inserts I/O device 4 on the sheet, and I/O device 4 comprises display 401 and keyboard 402 and system clock 403; Display 401 can show the time and the historical leakage current values of lightning arrester action intuitively; Keyboard 402 can be realized setting-up time, query history leakage current value, the query history actuation time and the function of the deletion of data.
Sensor 1 output terminal also is provided with overvoltage protection 5.
Signal processing circuit 2 is made up of leakage current signal hardware handles circuit 201 and action current signal hardware treatment circuit 202; Leakage current signal hardware handles circuit 2 comprises the leakage current signal sampling unit unit 211 that is connected with sensor 1 output terminal, the signal amplification unit 221 that is connected with leakage current signal sampling unit 211 output terminals, real effective (RMS) converting unit 231 that is connected with the output terminal of signal amplification unit 221 and the signal amplification unit 241 that is connected to real effective (RMS) converting unit 231 output terminals, the output terminal of signal amplification unit 241 is connected to the input port of micro-system 3 on the sheet; Action current signal hardware treatment circuit 202 comprises the thunderbolt actuating signal current limliting unit 212 that is connected in sensor 1 output terminal, be connected in the optical isolator element 222 of thunderbolt actuating signal current limliting unit 212 output terminals, be connected in the delay unit 232 of optical isolator element 222 output terminals, the output terminal of described delay unit 232 is connected to the input port of micro-system 3 on the sheet.
Principle of work of the present utility model is as follows:
Referring to Fig. 2, when the lightning arrester operate as normal, the leakage current signal that sensor 1 is sensed is sent into micro-system 3 on the sheet after handling through leakage current signal hardware handles circuit 201, micro-system 3 detected three-phase lightning protector leakage current effective value in per 5 minutes and by LCD output on the sheet, monitor value of 12:00 record every day.
Referring to Fig. 3, when lightning arrester moves, send into micro-system 3 (SOC) on the sheet after the processing of the action current signal that sensor 1 is sensed through action current signal hardware treatment circuit 202, micro-system 3 (SOC) can be pounced on the time of obtaining this signal and operation of recording immediately on the sheet, simultaneously by each number of times that moves mutually of LCD output.
Lightning arrester does not have residual voltage on-line monitoring registering instrument and realize sampling, the function that shows and write down three-phase lightning protector leakage current effective value under normal condition; When lightning arrester moves, can realize discerning, operation of recording with time and display action number of times, also can use the deletion of button setting-up time, the historical leakage current values of inquiry lightning arrester, historical actuation time of inquiry lightning arrester and data.A no residual voltage monitoring and recording instrument can be monitored three lightning arresters, and mounting means is embedded installation, is suitable for the monitoring of three-phase lightning protector in the switch cubicle.

Claims (4)

1. a lightning arrester does not have residual voltage on-line monitoring registering instrument, comprise the sensor (1) that is connected in the arrester ground end, be connected in the signal processing circuit (2) of sensor (1) output terminal, be connected in the I/O device (4) of micro-system (3) output terminal on micro-system (3) on the sheet of signal processing circuit (2) output terminal and the brace, described I/O device (4) comprises the display (401) that is connected with micro-system (SOC) (3) port on the sheet, keyboard (402), described sensor 1 output terminal also is provided with overvoltage protection (5), it is characterized in that: described signal processing circuit (2) is made up of leakage current signal hardware handles circuit (201) and the action current signal hardware treatment circuit (202) in parallel with leakage current signal hardware handles circuit (201); Described I/O device (4) also comprises the system clock (403) that is connected with micro-system (SOC) (3) port on the sheet.
2. lightning arrester according to claim 1 does not have residual voltage on-line monitoring registering instrument, it is characterized in that:
Described leakage current signal hardware handles circuit (201) comprises the leakage current signal sampling unit (211) that is connected with sensor (1) output terminal, be connected in the signal amplification unit (221) of leakage current signal sampling unit (211) output terminal, the signal amplification unit (241) that is connected in real effective (RMS) converting unit (231) of signal amplification unit (221) output terminal and is connected to real effective (RMS) converting unit (231) output terminal; The output terminal of described signal amplification unit (241) is connected to the input port of microprocessing systems on the sheet (3).
3. lightning arrester according to claim 1 does not have residual voltage on-line monitoring registering instrument, it is characterized in that:
Described action current signal hardware treatment circuit (202) comprises the thunderbolt actuating signal current limliting unit (212) that is connected in sensor (1) output terminal, be connected in the optical isolator element (222) of thunderbolt actuating signal current limliting unit (212) output terminal, be connected in the delay unit (232) of optical isolator element (222) output terminal, the output terminal of described delay unit (232) is connected to the input port of microprocessing systems on the sheet (3).
4. do not have residual voltage on-line monitoring registering instrument according to each described lightning arrester of claim 1-3, it is characterized in that: described sensor (1) does not have the residual voltage sensor for induction type.
CNU2008202217022U 2008-09-28 2008-09-28 Non-residual voltage monitoring recorder for lightning arrestor Expired - Lifetime CN201278010Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202217022U CN201278010Y (en) 2008-09-28 2008-09-28 Non-residual voltage monitoring recorder for lightning arrestor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202217022U CN201278010Y (en) 2008-09-28 2008-09-28 Non-residual voltage monitoring recorder for lightning arrestor

Publications (1)

Publication Number Publication Date
CN201278010Y true CN201278010Y (en) 2009-07-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944738A (en) * 2012-12-07 2013-02-27 上海市电力公司 Detection system and detection method for leakage current of switchgear arrester
CN103969523A (en) * 2014-04-18 2014-08-06 南京信息工程大学 Device capable of automatically monitoring performance of voltage limiting type surge protection device
CN105699754A (en) * 2016-04-06 2016-06-22 长沙群瑞电子科技有限公司 Leakage current monitoring device for three-phase lightning arrester
CN106932675A (en) * 2017-04-14 2017-07-07 南京世都科技有限公司 For the monitoring device of arrester
CN111289823A (en) * 2020-03-02 2020-06-16 南京世都科技有限公司 Lightning arrester monitoring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944738A (en) * 2012-12-07 2013-02-27 上海市电力公司 Detection system and detection method for leakage current of switchgear arrester
CN103969523A (en) * 2014-04-18 2014-08-06 南京信息工程大学 Device capable of automatically monitoring performance of voltage limiting type surge protection device
CN105699754A (en) * 2016-04-06 2016-06-22 长沙群瑞电子科技有限公司 Leakage current monitoring device for three-phase lightning arrester
CN106932675A (en) * 2017-04-14 2017-07-07 南京世都科技有限公司 For the monitoring device of arrester
CN111289823A (en) * 2020-03-02 2020-06-16 南京世都科技有限公司 Lightning arrester monitoring device

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Granted publication date: 20090722