CN202502236U - Lightning arrester on-line monitor calibration apparatus - Google Patents
Lightning arrester on-line monitor calibration apparatus Download PDFInfo
- Publication number
- CN202502236U CN202502236U CN2012200392748U CN201220039274U CN202502236U CN 202502236 U CN202502236 U CN 202502236U CN 2012200392748 U CN2012200392748 U CN 2012200392748U CN 201220039274 U CN201220039274 U CN 201220039274U CN 202502236 U CN202502236 U CN 202502236U
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- circuit
- lightning arrester
- line monitor
- calibration apparatus
- monitor calibration
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- Expired - Fee Related
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Abstract
The utility model discloses a lightning arrester on-line monitor calibration apparatus. The lightning arrester on-line monitor calibration apparatus comprises a power supply circuit, a high voltage boost circuit, a current output circuit, a one-chip microcomputer control circuit and a display circuit, wherein the power supply circuit and the one-chip microcomputer control circuit are connected, the one-chip microcomputer control circuit is respectively connected with the high voltage boost circuit, the current output circuit and the display circuit. The lightning arrester on-line monitor calibration apparatus has advantages of simple structure, portable convenience, reliable calibration and accurate and durable performance.
Description
Technical field
The utility model relates to a kind of lightning arrester on-line monitoring appearance calibration equipment.
Background technology
At present, the product that comparatively common lightning arrester on-line monitoring appearance calibration equipment mainly contains following two kinds of working methods on the market is at home used at the scene:
First kind of action frequency that only possesses the thunder and lightning counter in the lightning arrester on-line monitoring appearance carries out the verification inspection; Its principle of work is to rely on direct current multiplication of voltage mode to produce a simulation high voltage; Magnitude of voltage is selected voltage peak according to the parameter of different Zinc-Oxide Arresters; This type of instrumental function is comparatively single, and it reveals milliampere accuracy of electric current gauge outfit to the monitoring in the lightning arrester on-line monitoring appearance can't verification.
Second kind is to have thunder and lightning counting action verification inspection concurrently and reveal milliampere thunder and lightning counter tester of reometer checking function; Its principle of work is earlier the built-in large value capacitor of instrument to be charged; Rely on capacitor to the discharge of lightning arrester on-line monitoring appearance, produce the simulation lightning voltage and make the action of thunder and lightning counter; The electric current gauge outfit precision that built-in milliampere of current feedback circuit of instrument regulated output current verification lightning arrester on-line monitoring appearance through potentiometer, appliance requires uses the 220V power supply.
More than two kinds of products have following shortcoming:
First kind of product function is single, has satisfied not the prerun technical requirement to the performance checking of lightning arrester on-line monitoring appearance, and because of using the powered battery output capacity less, occurs trial voltage easily and do not reach counter operation voltage value.
Though second kind of product basic function possesses; But because working power is the AC220V input; Need to insert single phase poaer supply at the scene of use, because the lightning arrester on-line monitoring appearance installation site standoff distance of different electric pressures is far away, power lead uses very inconvenience in tow in transformer station's test site; The moving control output current amplitude of regulating of built-in milliampere of complete armrest of current feedback circuit output current of instrument is to the accuracy of leakage current table verification relatively poor (demarcation of gauge outfit current value scale non-equivalent).
Summary of the invention
Be to solve the problems referred to above that prior art exists, the utility model a kind of convenience lightning arrester on-line monitoring appearance calibration equipment efficiently is provided, its technical scheme of taking is:
This device comprises power-supplying circuit, high voltage step-up circuit, current output circuit, single chip machine controlling circuit and display circuit; Power-supplying circuit connects single chip machine controlling circuit, and single chip machine controlling circuit connects high voltage step-up circuit, current output circuit and display circuit respectively.
This device adopts the portable construction design; Two major functions of verification of counter action frequency and leakage current verification are done be in the same place; Thunder and lightning counter action verification inspection to lightning arrester on-line monitoring appearance is provided with third gear voltage, satisfies the counter action checking of all producer's lightning arrester on-line monitoring appearance at present; Adopt programmable power supply control to leaking the precision checking of milliammeter; Set the verification current value according to the milliammeter range; With the verification (5%, 10%, 20%, 50%, 75%, 100%) of fixing a point of the percent value of gauge outfit full scale, improve the demonstration accuracy of earial drainage reometer.Action count check and p-wire of leakage current verification use only need on instrument, to operate several simple key-press or knob can be provided with parameter and test function is selected, and wiring is simple, easy to carry during use, the instrument volume is little, in light weight; High-performance lithium powered battery, the low-power consumption of instrument complete machine are adopted in the tester power supply, and once charging is accomplished and can be used continuously more than 4 hours, is fit to very much the on-the-spot use of transformer station.Well solve the problem and shortage that existing product exists, reduce site test personnel's labour intensity, improve reliability, the accuracy of lightning arrester on-line monitoring appearance video data.
Description of drawings
Fig. 1 is the circuit structure block diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is specified.
As shown in Figure 1, power-supplying circuit connects single chip machine controlling circuit, and single chip machine controlling circuit connects high voltage step-up circuit, current output circuit and display circuit respectively, and the principle of work of individual circuit is following:
Power-supplying circuit: this partial circuit has two power supply interfaces, and one is the internal cell power supply interface, and one is charging inlet.Battery feed circuit has perfect safeguard measure: functions such as battery is anti-reverse, battery voltage detection, battery overcurrent protection, the under-voltage shutdown of battery have strengthened the reliability of system.When the charging socket inserted the external dc power of specially joining, battery feed circuit automatically switched to charging modes, is charged the battery by external dc power, and charging process is a first constant current constant voltage again, and battery is full of when voltage reaches 12.6V, stopped charging automatically.
The high voltage step-up circuit: adopt Switching Power Supply boosting mode efficiently, conversion efficiency can reach more than 80%, can make full use of the electric energy of battery storage.Exportable 800,1200, the 1600 three kinds of magnitudes of voltage of high pressure are selected output voltage values by a fork shift switch control.
Current output circuit: the direct current that adopts high-performance inversion control chip that battery is provided generates the standard sine wave ac current signal of the highest 50V, for verification accurately provides good assurance.Through the instrument internal Automatic Program lightning arrester on-line monitoring appearance leakage current table is carried out the pointwise verification.
Single chip machine controlling circuit and display circuit: tester is by the duty of 8 high-speed microprocessors control complete machines, the control instrument function selecting, and measuring voltage, electric current output size, and on liquid crystal display, show; Instrument can cut out temporary transient unwanted functional module according to the selection function item automatically, to save battery consumption.
Claims (1)
1. lightning arrester on-line monitoring appearance calibration equipment; Comprise power-supplying circuit, high voltage step-up circuit, current output circuit, single chip machine controlling circuit and display circuit; It is characterized in that: power-supplying circuit connects single chip machine controlling circuit, and single chip machine controlling circuit connects high voltage step-up circuit, current output circuit and display circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200392748U CN202502236U (en) | 2012-02-08 | 2012-02-08 | Lightning arrester on-line monitor calibration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200392748U CN202502236U (en) | 2012-02-08 | 2012-02-08 | Lightning arrester on-line monitor calibration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502236U true CN202502236U (en) | 2012-10-24 |
Family
ID=47038846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200392748U Expired - Fee Related CN202502236U (en) | 2012-02-08 | 2012-02-08 | Lightning arrester on-line monitor calibration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502236U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630865A (en) * | 2013-12-20 | 2014-03-12 | 国家电网公司 | Automatic tester of online monitor for electric lightning arrester |
| CN104777444A (en) * | 2015-04-14 | 2015-07-15 | 国网辽宁省电力有限公司抚顺供电公司 | Lightning arrester discharge counter comprehensive calibration instrument and calibration method |
| CN107861081A (en) * | 2017-06-16 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of valve arrester performeter checking instrument |
-
2012
- 2012-02-08 CN CN2012200392748U patent/CN202502236U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630865A (en) * | 2013-12-20 | 2014-03-12 | 国家电网公司 | Automatic tester of online monitor for electric lightning arrester |
| CN104777444A (en) * | 2015-04-14 | 2015-07-15 | 国网辽宁省电力有限公司抚顺供电公司 | Lightning arrester discharge counter comprehensive calibration instrument and calibration method |
| CN104777444B (en) * | 2015-04-14 | 2018-04-06 | 国网辽宁省电力有限公司抚顺供电公司 | Arrester discharge counter comprehensive calibrator and method of calibration |
| CN107861081A (en) * | 2017-06-16 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of valve arrester performeter checking instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20140208 |