CN202159104U - Metal oxide lightning arrester on-line detection system - Google Patents
Metal oxide lightning arrester on-line detection system Download PDFInfo
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- CN202159104U CN202159104U CN2011202309276U CN201120230927U CN202159104U CN 202159104 U CN202159104 U CN 202159104U CN 2011202309276 U CN2011202309276 U CN 2011202309276U CN 201120230927 U CN201120230927 U CN 201120230927U CN 202159104 U CN202159104 U CN 202159104U
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- lightning arrester
- metal oxide
- arrester
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Abstract
The utility model discloses a metal oxide lightning arrester on-line detection system, comprising a microprocessor, wherein a leakage current sampling module is connected with the microprocessor through an A/D conversion module, a lightning stroke counting module is connected with the microprocessor through a counter, and the microprocessor is respectively connected with a storage device, a liquid crystal display and a communication module. The metal oxide lightning arrester on-line detection system can reliably and accurately realize centralized monitoring and accurately and timely report the operation condition; if the leakage occurs, the on-line detection system can automatically emit an alarm signal to enable the operators to timely master and process the accident hidden trouble in advance, thereby ensuring the safe operation of the system. The metal oxide lightning arrester on-line detection system works under the operation state of a lightning arrester, and on one hand can ensure the safe operation early warning system of the transformer station lightning arrester and enable the failure lightning arrester to be early discovered and eliminated in order to avoid the explosion of the arrester, on the other hand can transmit the leakage current and motion frequency data of the arrester remotely, thereby dispensing with the trouble of manual recording and meter reading, and reducing the workload.
Description
Technical field
The utility model relates to a kind of detection alarm system, is a kind of metal oxide arrester on-line detecting system specifically.
Background technology
Metal oxide arrester (hereinafter to be referred as MOA) is mainly used in restriction electrical network atmospheric over-voltage or by the internal overvoltage that operation causes, is one of important protection equipment that guarantees safe operation of power system.MOA is little, in light weight owing to having excellent non-linear volt-ampere characteristic, volume; And discharge capacity is big, is a kind of novel lightning arrester that electric system is applied, and can significantly reduce by the insulating Design level of protection equipment behind the employing MOA; Obviously reduce equipment investment, improve power supply reliability; But it does not have series gap owing to MOA, and valve block is in operation and bears working voltage, and the real component in the leakage current will cause the inner member nonlinear characteristic to reduce; Increase aging speed, the lightning arrester life-span is reduced.Simultaneously; The oxide lightning arrester is in operation and also can runs into like: filth, watered and wetting, bears factor effects such as power-frequency voltage, surge voltage for a long time; Thermal runaway in the MOA hanging net operation; Even the accident of blasting happens occasionally, thereby guarantees that lightning arrester normally plays a role, and need carry out state monitoring and management to lightning arrester.
The management of metal current oxide lightning arrester running status is the basis with regular prophylactic tria, and the lightning arrester performance state is detected at the scene on the spot, judges its running status quality, and this way can't accurately be grasped the MOA running status.
Summary of the invention
Goal of the invention: the purpose of the utility model is to overcome the deficiency of prior art, and providing a kind of can onlinely detect, and detects metal oxide arrester on-line detecting system accurately.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme: a kind of metal oxide arrester on-line detecting system, and it comprises microprocessor, said leakage current sampling module links to each other with microprocessor through the A/D modular converter; The counting thunder module links to each other with microprocessor through counter; Described microprocessor also links to each other with storer, LCD and communication module respectively.
Wherein, described leakage current sampling module comprises sensor, filtering circuit and the amplifying circuit that connects successively, and described sensor links to each other with oxide lightning arrester to be detected, and described amplifying circuit links to each other with the A/D modular converter.
Wherein, described sensor is the induction by current sensor; Described A/D converting unit links to each other with microprocessor through input/output interface; Described communication module links to each other with microprocessor through serial communication interface.
The leakage current of operating lightning arrester is through lightning arrester operational factor collector; Deliver to the A/D modular converter to leakage current and lightning arrester action current number of times signal value that isolation induces; The digital signal that generates after the A/D module processing sends to microprocessor; The leakage current of the lightning arrester of A, B, C three-phase shows (can select and show effective value or peak value) in the LCD of this device (LCD) cocycle, show the action frequency of corresponding lightning arrester simultaneously; Can also set timing or instant printing and respectively organize the leakage current and the action frequency of lightning arrester, substitute loaded down with trivial details manual metering work fully.Exceed standard in case leak, microprocessor promptly has a pair of warning contact action output; Alerting signal and leakage current can also be uploaded to the computing machine on the LAN through LAN, reach the purpose of the automatic detection alarm of unattended operation transformer station lightning arrester fault current.
Beneficial effect: the utility model has been realized concentrated monitoring reliably, exactly, accurately, notify operation conditions at once, if there is leakage situation capable of automatic alarm, the operations staff is in time grasped and advanced processing accident potential, for system safety operation provides assurance; Owing to adopt induction mode intercepting leakage current and lightning arrester action current signal, therefore well realized isolating fully to high-tension; But the size of the leakage current of pulpit Direct observation lightning arrester and the action current number of times of lightning arrester, and can upload the operational factor of lightning arrester in real time through the ethernet local area network of electric system; The utility model is the on-line monitoring system under the lightning arrester running status, and this system can guarantee the safe operation early warning system of transformer station's lightning arrester on the one hand, and the lightning arrester of finding early and fix a breakdown avoids taking place Explosion of on Arrester; On the other hand, can carry out data remote to leakage current of an arrester and action frequency, exempt manual record, check meter numerous and diverse, reduce workload.
Description of drawings
Be illustrated as the structural representation of the utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done explanation further.
As shown in the figure, a kind of metal oxide arrester on-line detecting system of the utility model comprises microprocessor 1, and the model of described microprocessor 1 is the mip processor.Said leakage current sampling module 2 links to each other with microprocessor 1 through A/D modular converter 3; Described leakage current sampling module 2 comprises sensor, filtering circuit and the amplifying circuit that connects successively, and described sensor links to each other with oxide lightning arrester to be detected, and described amplifying circuit links to each other with A/D modular converter 3; Described sensor is the induction by current sensor.Described A/D converting unit 3 links to each other with microprocessor 1 through input/output interface, and described communication module 8 links to each other with microprocessor 1 through serial communication interface.
The measuring process of the utility model: the induction by current sensor records the current signal of the MOA that flows through; Then through after filtering, amplifying; Get into A/D modular converter 3 and carry out analog to digital conversion; A/D conversion makes electric current become only to contain than low-order harmonic and sizeable digital signal that this digital signal gets into microprocessor 1 and handles; Send to microprocessor 1 behind the thunderbolt number of times process counter 5 that counting thunder module 4 will be collected simultaneously and carry out aggregation process; Microprocessor 1 is presented at the information of handling well on the LCD 7, and the information of handling well simultaneously can also be stored in the storer 6, and the information via communication module of handling well 8 can be transferred to central control room at a distance, realizes detecting at a distance.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (5)
1. metal oxide arrester on-line detecting system, it is characterized in that: it comprises microprocessor (1), said leakage current sampling module (2) links to each other with microprocessor (1) through A/D modular converter (3); Counting thunder module (4) links to each other with microprocessor (1) through counter (5); Described microprocessor (1) also links to each other with storer (6), LCD (7) and communication module (8) respectively.
2. a kind of metal oxide arrester on-line detecting system according to claim 1; It is characterized in that: described leakage current sampling module (2) comprises sensor, filtering circuit and the amplifying circuit that connects successively; Described sensor links to each other with oxide lightning arrester to be detected, and described amplifying circuit links to each other with A/D modular converter (3).
3. a kind of metal oxide arrester on-line detecting system according to claim 2 is characterized in that: described sensor is the induction by current sensor.
4. a kind of metal oxide arrester on-line detecting system according to claim 1 is characterized in that: described A/D converting unit (3) links to each other with microprocessor (1) through input/output interface.
5. a kind of metal oxide arrester on-line detecting system according to claim 1 is characterized in that: described communication module (8) links to each other with microprocessor (1) through serial communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202309276U CN202159104U (en) | 2011-07-01 | 2011-07-01 | Metal oxide lightning arrester on-line detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202309276U CN202159104U (en) | 2011-07-01 | 2011-07-01 | Metal oxide lightning arrester on-line detection system |
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| Publication Number | Publication Date |
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| CN202159104U true CN202159104U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202309276U Expired - Lifetime CN202159104U (en) | 2011-07-01 | 2011-07-01 | Metal oxide lightning arrester on-line detection system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955089A (en) * | 2012-11-16 | 2013-03-06 | 四川电力科学研究院 | Online monitoring device applied to voltage limiter in series compensation capacitor and method thereof |
| CN103901302A (en) * | 2014-03-25 | 2014-07-02 | 国网吉林省电力有限公司电力科学研究院 | Method and device for online detection of state of leakage conductor with series gap |
| CN104655969A (en) * | 2015-03-19 | 2015-05-27 | 国网上海市电力公司 | Zinc oxide arrester online monitoring system |
| CN105021878A (en) * | 2014-04-30 | 2015-11-04 | 长沙群瑞电子科技有限公司 | Lightning arrester lightning monitoring recorder |
| 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 |
| CN108896860A (en) * | 2018-08-15 | 2018-11-27 | 国网河南省电力公司电力科学研究院 | Lightning arrestor movement process record analysis system and method |
| CN109030924A (en) * | 2018-06-13 | 2018-12-18 | 国网福建省电力有限公司龙岩供电公司 | Suitable for the three-phase lightning protector leakage current wireless monitoring device in switchgear |
-
2011
- 2011-07-01 CN CN2011202309276U patent/CN202159104U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955089A (en) * | 2012-11-16 | 2013-03-06 | 四川电力科学研究院 | Online monitoring device applied to voltage limiter in series compensation capacitor and method thereof |
| CN102955089B (en) * | 2012-11-16 | 2016-04-06 | 国网四川省电力公司电力科学研究院 | For on-Line Monitor Device and the method thereof of voltage limiter in series capacitor compensation |
| CN103901302A (en) * | 2014-03-25 | 2014-07-02 | 国网吉林省电力有限公司电力科学研究院 | Method and device for online detection of state of leakage conductor with series gap |
| CN105021878A (en) * | 2014-04-30 | 2015-11-04 | 长沙群瑞电子科技有限公司 | Lightning arrester lightning monitoring recorder |
| CN104655969A (en) * | 2015-03-19 | 2015-05-27 | 国网上海市电力公司 | Zinc oxide arrester online 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 |
| CN109030924A (en) * | 2018-06-13 | 2018-12-18 | 国网福建省电力有限公司龙岩供电公司 | Suitable for the three-phase lightning protector leakage current wireless monitoring device in switchgear |
| CN108896860A (en) * | 2018-08-15 | 2018-11-27 | 国网河南省电力公司电力科学研究院 | Lightning arrestor movement process record analysis system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |