CN202512187U - Online monitoring device of lightning arrester - Google Patents
Online monitoring device of lightning arrester Download PDFInfo
- Publication number
- CN202512187U CN202512187U CN 201220135806 CN201220135806U CN202512187U CN 202512187 U CN202512187 U CN 202512187U CN 201220135806 CN201220135806 CN 201220135806 CN 201220135806 U CN201220135806 U CN 201220135806U CN 202512187 U CN202512187 U CN 202512187U
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Abstract
The utility model discloses an online monitoring device of a lightning arrester. The online monitoring device of the lightning arrester comprises a discharge gap, a rectifier circuit and an online monitoring circuit, wherein the discharge gap is serially connected between the lightning arrester and the earth; a signal input end of the rectifier circuit is respectively connected with two ends of the discharge gap, and the output end of the rectifier circuit is connected with the online monitoring circuit. According to the utility model, the security operation situation of the lighting arrester can be monitored at any time; the unfolding state of the lighting arrester can be maintained according to the monitored field running state situation; the labor intensity of a worker can be greatly reduced; unsafe factors are reduced; the power supply reliability of a distribution system is improved, and the economic and social benefits of a power enterprise are also improved.
Description
Technical field
The utility model relates to the monitoring technology of lightning arrester, relates in particular to a kind of on-Line Monitor Device of 10～20kV lightning arrester.
Background technology
The intelligent grid construction is carried out in electric system at present comprehensively, and full electric network is carried out Based Intelligent Control, intelligent management, intellectual analysis.The intelligent construction of electrical network only just begun starting; Because a variety of causes fails to be generalizable always comprehensively; For the lightning arrester on-line monitoring technique research that install in electric system 10～20kV distribution line, transformer platform district, also be the intelligent popularization and application part of electrical network.The lightning arrester of electric system 10 ~ 20kV distribution line of operation, the installation of transformer platform district is owing to can not monitor in real time at present; Can not carry out repair based on condition of component; Basically be out of order; Lightning arrester for example takes place damage phase line ground connection, have only lean on the maintainer on duty that supplies power to remove to search the phase line earth point after, just can overhaul; So back and forth the repair time long, influence has reduced power supply reliability, and has made the device damage rate higher user's power supply.
The utility model content
The purpose of the utility model provides a kind of lightning arrester on-Line Monitor Device, operation conditions that can the on-line monitoring lightning arrester, thus overhaul, can improve the power system power supply reliability.
The utility model adopts following technical proposals: a kind of lightning arrester on-Line Monitor Device; Comprise discharging gap; Rectification circuit, on-line monitoring circuit; Said discharging gap is connected between lightning arrester and the earth, and the signal input part of said rectification circuit is connected with the two ends of discharging gap respectively, and the output terminal of rectification circuit connects online observation circuit.
Described rectification circuit comprises diode bridge rectifier circuit, is connected with electric capacity between first output terminal of diode bridge rectifier circuit and second output terminal, and the earth terminal of diode bridge rectifier circuit is connected with first resistance.
Described diode bridge rectifier circuit is the duodiode bridge rectifier circuit.
Described on-line monitoring circuit comprises counting circuit and leakage current monitor circuit; The two ends of counting circuit are connected with second output terminal with first output terminal of rectification circuit respectively; One end of leakage current monitor circuit is connected with counting circuit, and the other end is connected with second output terminal of rectification circuit.
Described counting circuit comprises the series circuit that is composed in series successively by second resistance, counter, diode; One end of second resistance is connected with first output terminal of diode bridge rectifier circuit, and the positive pole of diode is connected with second output terminal of diode bridge rectifier circuit.
Described leakage current testing circuit comprises second branch road and first light emitting diode that first branch road, second light emitting diode and the parallel connection of the 4th resistance of reometer and the parallel connection of the 3rd resistance constitute; First branch road and the two ends that are connected in parallel on diode after first light emitting diode, second branch road are connected; Wherein first branch road connects diode cathode, and second branch road connects diode cathode.
Described counter comprises solenoid and message register, and wherein solenoid is connected with second resistance, diode, and solenoid drives the message register counting.
The lightning arrester on-Line Monitor Device that install in the utility model electric system 10 ~ 20kV distribution line, transformer platform district can be monitored the safe operation situation of lightning arrester at any time; According to the on-the-spot running status situation of monitoring, can carry out repair based on condition of component to lightning arrester, can alleviate worker's labour intensity greatly; Reduce unsafe factor; Improve the distribution system power supply reliability, improve electric power enterprise and social benefit, also improve the social prestige of power supply enterprise greatly.Use distribution line, transformer platform district lightning arrester on-Line Monitor Device if popularize in an all-round way, then can play a role in promoting the development of intelligent grid construction technique.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1; A kind of lightning arrester on-Line Monitor Device of the utility model; Comprise that discharging gap, rectification circuit, counting circuit, leakage current monitor circuit, said discharging gap are connected between lightning arrester and the earth; The signal input part of said rectification circuit is connected with the two ends of discharging gap respectively, and the output terminal of rectification circuit is connected with the counting circuit and the leakage current monitor circuit of parallel connection.Said discharging gap, leakage current monitor circuit, counting circuit are installed in the casing.
As shown in Figure 2, described rectification circuit comprises the duodiode bridge rectifier circuit, is connected with capacitor C between first output terminal 1 of duodiode bridge rectifier circuit and second output terminal 2, and the earth terminal of diode bridge rectifier circuit is connected with first resistance R 1.Described counting circuit comprises the series circuit that is composed in series successively by second resistance R 2, counter, diode D1; One end of second resistance R 2 is connected with first output terminal 1 of diode bridge rectifier circuit, and the positive pole of diode D1 is connected with second output terminal 2 of diode bridge rectifier circuit.Described counter comprises solenoid L and message register, and solenoid L connects with second resistance R 2, diode D1, and solenoid L drives the message register counting.Described leakage current testing circuit comprises second branch road, first LED 1 that first branch road, second LED 2 and 4 parallel connections of the 4th resistance R of reometer A and 3 parallel connections of the 3rd resistance R constitute; First branch road and the two ends that are connected in parallel on diode D1 after first LED 1, second branch road are connected; Wherein first branch road connects diode D1 positive pole, and second branch road connects diode D1 negative pole.
The leakage current of the lightning arrester during normal operation flows through rectification circuit, and this moment, leakage current was very little, and first LED 1 through the leakage current monitor circuit can detect leakage current, and the leakage current of this moment is normal; When lightning arrester goes wrong, cause that second LED 2 was also shinny when leakage current increased, first LED 1 and second LED 2 be shinny indication leakage current overrate simultaneously.
When the thunderbolt electrical equipment, the thunder and lightning high voltage is applied on the lightning arrester, and this moment, the arrester valve piece made insulation was zero; The gap of disruptive discharge simultaneously; Lightning current flows into the earth through earthing device, and the lightning arrester counting circuit is remembered the number of times that once is struck by lightning, and lightning arrester counter action just once; When having only lightning arrester to pass through big electric current, solenoid just produces enough magnetic force, drives the message register action.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (7)
1. lightning arrester on-Line Monitor Device; It is characterized in that: comprise discharging gap; Rectification circuit, on-line monitoring circuit; Said discharging gap is connected between lightning arrester and the earth, and the signal input part of said rectification circuit is connected with the two ends of discharging gap respectively, and the output terminal of rectification circuit connects online observation circuit.
2. lightning arrester on-Line Monitor Device according to claim 1; It is characterized in that: described rectification circuit comprises diode bridge rectifier circuit; Be connected with electric capacity between first output terminal of diode bridge rectifier circuit and second output terminal, the earth terminal of diode bridge rectifier circuit is connected with first resistance.
3. lightning arrester on-Line Monitor Device according to claim 2 is characterized in that: described diode bridge rectifier circuit is the duodiode bridge rectifier circuit.
4. according to claim 1 or 2 or 3 described lightning arrester on-Line Monitor Device; It is characterized in that: described on-line monitoring circuit comprises counting circuit and leakage current monitor circuit; The two ends of counting circuit are connected with second output terminal with first output terminal of rectification circuit respectively; One end of leakage current monitor circuit is connected with counting circuit, and the other end is connected with second output terminal of rectification circuit.
5. lightning arrester on-Line Monitor Device according to claim 4; It is characterized in that: described counting circuit comprises the series circuit that is composed in series successively by second resistance, counter, diode; One end of second resistance is connected with first output terminal of diode bridge rectifier circuit, and the positive pole of diode is connected with second output terminal of diode bridge rectifier circuit.
6. lightning arrester on-Line Monitor Device according to claim 5; It is characterized in that: described leakage current testing circuit comprises second branch road and first light emitting diode that first branch road, second light emitting diode and the parallel connection of the 4th resistance of reometer and the parallel connection of the 3rd resistance constitute; First branch road and the two ends that are connected in parallel on diode after first light emitting diode, second branch road are connected; Wherein first branch road connects diode cathode, and second branch road connects diode cathode.
7. lightning arrester on-Line Monitor Device according to claim 6 is characterized in that: described counter comprises solenoid and message register, and wherein solenoid is connected with second resistance, diode, and solenoid drives the message register counting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135806 CN202512187U (en) | 2012-04-01 | 2012-04-01 | Online monitoring device of lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135806 CN202512187U (en) | 2012-04-01 | 2012-04-01 | Online monitoring device of lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202512187U true CN202512187U (en) | 2012-10-31 |
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ID=47064664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220135806 Expired - Fee Related CN202512187U (en) | 2012-04-01 | 2012-04-01 | Online monitoring device of lightning arrester |
Country Status (1)
| Country | Link |
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| CN (1) | CN202512187U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608400A (en) * | 2012-04-01 | 2012-07-25 | 河南省电力公司驻马店供电公司 | Online monitoring device of lightning arrester |
| CN106645825A (en) * | 2017-01-20 | 2017-05-10 | 国网河南省电力公司电力科学研究院 | Lightning arrester live-line test overvoltage protection special test wire |
| CN106771821A (en) * | 2017-01-11 | 2017-05-31 | 长沙群瑞电子科技有限公司 | A kind of leakage current of an arrester turns 4 20mA signaling conversion circuits |
-
2012
- 2012-04-01 CN CN 201220135806 patent/CN202512187U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608400A (en) * | 2012-04-01 | 2012-07-25 | 河南省电力公司驻马店供电公司 | Online monitoring device of lightning arrester |
| CN106771821A (en) * | 2017-01-11 | 2017-05-31 | 长沙群瑞电子科技有限公司 | A kind of leakage current of an arrester turns 4 20mA signaling conversion circuits |
| CN106645825A (en) * | 2017-01-20 | 2017-05-10 | 国网河南省电力公司电力科学研究院 | Lightning arrester live-line test overvoltage protection special test wire |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20150401 |
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| EXPY | Termination of patent right or utility model |