CN203084093U - Monitor used for lightning arrester - Google Patents

Monitor used for lightning arrester Download PDF

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Publication number
CN203084093U
CN203084093U CN 201220668425 CN201220668425U CN203084093U CN 203084093 U CN203084093 U CN 203084093U CN 201220668425 CN201220668425 CN 201220668425 CN 201220668425 U CN201220668425 U CN 201220668425U CN 203084093 U CN203084093 U CN 203084093U
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China
Prior art keywords
unit
lightning arrester
monitoring
power supply
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201220668425
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Chinese (zh)
Inventor
何计谋
刘勇奇
张宏涛
祝嘉喜
缪奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China XD Electric Co Ltd
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China XD Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China XD Electric Co Ltd filed Critical China XD Electric Co Ltd
Priority to CN 201220668425 priority Critical patent/CN203084093U/en
Application granted granted Critical
Publication of CN203084093U publication Critical patent/CN203084093U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a monitor used for a lightning arrester comprising a sampling circuit, a signal sampling unit, an input protection unit, a signal processing unit, an output protection unit, and a transmission unit. One end of the sampling circuit is connected with a low voltage end of the lightning arrester, and the other end is grounded. A counter and a current measuring meter are connected with the sampling circuit. According to the utility model, the counter and the current measuring meter can be used to form an on-site measuring display; a function of telemetering the on-site measuring data can be realized by using the signal sampling unit, the input protection unit, the signal processing unit, the output protection unit, the transmission unit, and the power supply unit, therefore the data can be transmitted to a station level or an IED unit. The lightning arrester performance and the overvoltage restriction condition can be reflected by the real-time uninterrupted monitoring of parameters of the lightning arrester such as the leakage current and the motion frequency, and the data telemetering function can be realized. The monitor has advantages of strong anti-interference ability, and ability of guaranteeing monitoring, recording, transmitting, and determining of the operation parameters of the lightning arrester.

Description

A kind of monitoring device for lightning arrester
Technical field
The utility model relates to the lightning arrester field, particularly a kind of monitoring device for lightning arrester.
Background technology
Monitoring device for lightning arrester is the device that is used for transformer station's its electric property of lightning arrester on-line monitoring, and this monitor reflects lightning arrester performance and overvoltage Limiting situation by parameters such as the leakage current of lightning arrester and action frequency are carried out real-time continual monitoring.
Lightning arrester is the important protection electrical equipment of electric system, and its operation conditions can be judged by the operational factor of measuring lightning arrester.Along with the requirement of electric system to equipment operation proposition high reliability, this just need monitor in real time, write down and judge the operational factor of lightning arrester, and common lightning arrester monitor can't satisfy this requirement to the lightning arrester operational monitoring.
The utility model content
The purpose of this utility model is to provide a kind of monitoring device for lightning arrester, this monitor reflects lightning arrester performance and overvoltage Limiting situation by leakage current, current in resistance property, capacitance current, action frequency and the time of lightning arrester are carried out real-time continual monitoring, realize the function of data remote, and display action number of times and leakage current values at the scene.
For achieving the above object, the utility model adopts following technical scheme:
A kind of monitoring device for lightning arrester comprises sampling loop, counter and current measurement table; Sampling loop one end is connected with the lightning arrester low pressure end, and an other end is connected with ground; Counter is connected described sampling loop with the current measurement table.
The utility model further improves and is: described monitoring device for lightning arrester also comprises signal sampling unit, input protection unit, signal processing unit, output protection unit and the transmission unit that connects successively; The signal sampling unit connects sampling loop.
The utility model further improves and is: transmission unit connects station level or IED unit by communication cable, optical fiber or wireless communication mode; Described communication cable adopts RS422 or RS485 pattern.
The utility model further improves and is: signal processing unit comprises a single-chip microcomputer.
The utility model further improves and is: described monitoring device for lightning arrester also comprises the power supply unit to signal sampling unit, input protection unit, signal processing unit, output protection unit and transmission unit power supply.
The utility model further improves and is: one or more combination in described power supply unit employing photoelectric cell, outer power supply source, laser powered sensor power supply, the measurement circuit power supply source.
The utility model further improves and is: the signal sampling unit is CT sensor or resistance; Input protection unit and output protection unit adopt photoelectricity to isolate respectively and magnetoelectricity is isolated, and power supply unit adopts magnetoelectricity to isolate.
The utility model further improves and is: counter is mechanical counter, liquid crystal type counter or digital tube counter, and the current measurement table is moving coil ammeter, liquid crystal type reometer or digital tubular type reometer.
With respect to prior art, the beneficial effect that the utlity model has is: the utility model adopts counter and current measurement table to constitute the in-site measurement demonstration; Adopt signal sampling unit, input protection unit, signal processing unit, output protection unit, transmission unit and power supply unit to constitute the teletransmission function of in-site measurement data, data transmission is arrived station level or IED unit.Reflect lightning arrester performance and overvoltage Limiting situation by parameters such as the leakage current of lightning arrester and action frequency are carried out real-time continual monitoring, realized the function of data remote.This monitor can move under the transformer station of various electric pressures and generating plant environment, and anti-interference energy is strong, has guaranteed in real time the operational factor of lightning arrester to be monitored, write down, transmitted and judges.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further;
Fig. 1 is the structural representation of a kind of monitoring device for lightning arrester of the present utility model;
Fig. 2 is the main synoptic diagram of monitor;
Among the figure: 1, sampling loop; 2, counter; 3, current measurement table; 4, signal sampling unit; 5, input protection unit; 6, signal processing unit 7, output protection unit; 8, transmission unit; 9, power supply unit; 10, attachment plug.
Embodiment:
With reference to Fig. 1, Fig. 2; a kind of monitoring device for lightning arrester of the utility model comprises sampling loop 1, counter 2, current measurement table 3, signal sampling unit 4, input protection unit 5, signal processing unit 6, output protection unit 7, transmission unit 8 and power supply unit 9.
Sampling loop 1 one ends are connected with the lightning arrester low pressure end, and an other end is connected with ground, and sampling loop 1 is sample resistance or CT coil; Counter 2 is connected sampling loop 1 with current measurement table 3, has constituted the in-site measurement display unit, and counter 2 and current measurement table 3 are used for monitoring in real time the action frequency and the leakage current of lightning arrester.
Signal sampling unit 4 connects sampling loop 1, and the signal of the 4 pairs of collections in signal sampling unit carries out step-down, falls stream for 6 uses of follow-up signal processing unit; Signal sampling unit 4 can adopt CT sensor or resistance; Signal sampling unit 4, input protection unit 5, signal processing unit 6, output protection unit 7, transmission unit 8 and attachment plug 10 have connected and composed the teletransmission part of in-site measurement data successively, and data transmission is arrived station level or IED unit.Signal sampling unit 4, input protection unit 5, signal processing unit 6, output protection unit 7 and transmission unit 8 power supplies are given in one or more combination in power supply unit 9 employing photoelectric cells, outer power supply source, laser powered sensor power supply, the measurement circuit power supply source.Input protection unit 5 and output protection unit 7 adopt photoelectricity to isolate and magnetoelectricity is isolated, and power supply unit 9 adopts magnetoelectricity to isolate, and guarantees that the input signal of whole monitor and output signal are interference-free.Signal processing unit 6 is a single-chip microcomputer, and its data that signal sampling unit 4 is gathered are handled, and the full current signal of leakage current is directly found the solution, and its resistive component is then according to circuital wave form analysis with calculate; By output protection unit 7 and transmission unit 8 data transmission is arrived station level or I ED unit then, thereby realize the monitoring of lightning arrester total current, current in resistance property and capacity current.
In the utility model monitoring device for lightning arrester, counter 2 and current measurement table 3 have constituted the in-site measurement display part; Gather by single-chip microcomputer is unified, the full current signal of leakage current is directly found the solution, its resistive component is then according to circuital wave form analysis with calculate, by output protection unit 7 and transmission unit 8 data transmission is arrived station level or IED unit then, thereby realize the monitoring of lightning arrester total current, current in resistance property and capacity current; The lightning arrester action frequency then is input to signal processing unit 6 by signal sampling unit 4 and input protection unit 5 with the lightning arrester signal, and is sent to station level or IED unit together with the leakage current signal, and shows on the display screen of host computer by management software.The lightning arrester operational factor of monitor monitors comprises the parameters such as total current, its current in resistance property, capacity current, action frequency and time of the leakage current of lightning arrester; Monitor is furnished with real-time clock and host computer timing system, writes down lightning arrester actuation time and number of times automatically.

Claims (8)

1. a monitoring device for lightning arrester is characterized in that, comprises sampling loop (1), counter (2) and current measurement table (3); Sampling loop (1) one end is connected with the lightning arrester low pressure end, and an other end is connected with ground; Counter (2) is connected described sampling loop (1) with current measurement table (3).
2. a kind of monitoring device for lightning arrester according to claim 1, it is characterized in that described monitoring device for lightning arrester also comprises signal sampling unit (4), input protection unit (5), signal processing unit (6), output protection unit (7) and the transmission unit (8) that connects successively; Signal sampling unit (4) connects sampling loop (1).
3. a kind of monitoring device for lightning arrester according to claim 2 is characterized in that, transmission unit (8) connects station level or I ED unit by communication cable, optical fiber or wireless communication mode; Described communication cable adopts RS422 or RS485 pattern.
4. a kind of monitoring device for lightning arrester according to claim 2 is characterized in that, signal processing unit (6) comprises a single-chip microcomputer.
5. a kind of monitoring device for lightning arrester according to claim 2; it is characterized in that described monitoring device for lightning arrester also comprises the power supply unit (9) to signal sampling unit (4), input protection unit (5), signal processing unit (6), output protection unit (7) and transmission unit (8) power supply.
6. a kind of monitoring device for lightning arrester according to claim 5 is characterized in that, one or more combination in described power supply unit (9) employing photoelectric cell, outer power supply source, laser powered sensor power supply, the measurement circuit power supply source.
7. a kind of monitoring device for lightning arrester according to claim 5 is characterized in that, signal sampling unit (4) are CT sensor or resistance; Input protection unit (5) and output protection unit (7) adopt photoelectricity to isolate respectively and magnetoelectricity is isolated, and power supply unit (9) adopts magnetoelectricity to isolate.
8. a kind of monitoring device for lightning arrester according to claim 1, it is characterized in that, counter (2) is mechanical counter, liquid crystal type counter or digital tube counter, and current measurement table (3) is moving coil ammeter, liquid crystal type reometer or digital tubular type reometer.
CN 201220668425 2012-12-05 2012-12-05 Monitor used for lightning arrester Active CN203084093U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220668425 CN203084093U (en) 2012-12-05 2012-12-05 Monitor used for lightning arrester

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Application Number Priority Date Filing Date Title
CN 201220668425 CN203084093U (en) 2012-12-05 2012-12-05 Monitor used for lightning arrester

Publications (1)

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CN203084093U true CN203084093U (en) 2013-07-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104714128A (en) * 2015-02-26 2015-06-17 南京南瑞继保电气有限公司 Online arrester monitoring system
CN105954571A (en) * 2016-07-22 2016-09-21 安徽亚辉电气自动化有限公司 Counting system for three-phase combined type overvoltage protector
CN110888012A (en) * 2019-12-11 2020-03-17 国网河南省电力公司新乡供电公司 Lightning arrester monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104714128A (en) * 2015-02-26 2015-06-17 南京南瑞继保电气有限公司 Online arrester monitoring system
CN105954571A (en) * 2016-07-22 2016-09-21 安徽亚辉电气自动化有限公司 Counting system for three-phase combined type overvoltage protector
CN110888012A (en) * 2019-12-11 2020-03-17 国网河南省电力公司新乡供电公司 Lightning arrester monitoring system

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