CN2700888Y - Thunder current transducer - Google Patents
Thunder current transducer Download PDFInfo
- Publication number
- CN2700888Y CN2700888Y CN 200420026051 CN200420026051U CN2700888Y CN 2700888 Y CN2700888 Y CN 2700888Y CN 200420026051 CN200420026051 CN 200420026051 CN 200420026051 U CN200420026051 U CN 200420026051U CN 2700888 Y CN2700888 Y CN 2700888Y
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- CN
- China
- Prior art keywords
- iron core
- winding
- conducting rod
- plastic housing
- plastic case
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Abstract
The utility model relates to a thunder current transducer, which is provided with two ring iron cores made into the same magnetic conductive material and having different diameters; two independent windings with the same linear diameters and different turn numbers are respectively rounded on the iron cores; a plastic case is arranged out of the iron core, and a metallic shield cover is sheathed out of the plastic case; insulating epoxide resin is arranged between the plastic case and the winding, and a conducting rod is arranged at the center of the iron core; the upper end of the conducting rod is connected with the lower end of the arrester, and the lower end of the conducting rod is connected with the non-linear resistor which is grounded; a group of rectifier modules are respectively connected in parallel at the two ends of the two groups of the windings, and the rectifier module is composed of rectifier elements and capacitors. The thunder current transducer has novel and reasonable structural design, good use effect, good safety and long service life, can monitor the running arrester at actual time, and can measure the lightning current with more than two gears and action counting.
Description
Affiliated technical field
The utility model relates to a kind of sensor, especially a kind of lighting current sensor that is used to measure above lightning current of second gear and action counting.
Background technology
Lightning arrester is the protective device of high voltage electric equipment; but lightning arrester is for a long time under the high-tension effect of power frequency; make lightning arrester aging gradually; it is characterized by current in resistance property increases; but circuital variation is not obvious again; only depend on prerun annually to find that the aging of lightning arrester is not enough; even qualified lightning arrester in prerun; be in operation and also punch through damage might take place; be in operation unavoidably and cause lightning arrester to burst; cause single-phase earthing or phase fault, cause device damage or large area blackout.If can find the lightning arrester that wears out early, just can be out of service ahead of time, can improve the security and the stability of operation of power networks.At present, most lightning arrester on-Line Monitor Device of using are to install a reometer on the basis of superpotential operation counter additional, another just adds an I/F transducer on above-mentioned basis, the electric signal that measures is converted to the light pulse signal, isolate transmission by photoconduction, these two kinds of methods can only be monitored leakage current of an arrester and superpotential action frequency, though latter's energy signal unofficial biography, concentrate monitoring in the pulpit, but current in resistance property to lightning arrester, the amplitude of lightning current can't monitor, the situation that can not in time comprehensively provide lightning arrester to be in operation strictly according to the facts, the security of operation of power networks and stability can not be guaranteed, let alone the unmanned modern management.
Summary of the invention
In order to overcome the deficiency of existing lightning arrester on-line monitoring device, the purpose of this utility model provides a kind ofly can monitor the lighting current sensor that leakage current its working voltage under also can write down the discharge time of lightning arrester in real time to operating lightning arrester.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of lighting current sensor, iron core with ring type body of using two different-diameters that are processed into a kind of permeability magnetic material, be wound with two of the different numbers of turn in same line footpath independently windings on the iron core respectively, iron core is outside equipped with plastic housing, plastic housing is set with metallic shield outward, between plastic housing and winding insulating epoxy is set, the center of iron core is provided with contact rod, the contact rod upper end is connected with the lightning arrester lower end, the lower end is connected with nonlinear resistor, nonlinear resistor ground connection, two groups of winding two ends each and one group of rectification module, rectification module is made up of rectifier cell and capacitor, respectively connects a counter at the output terminal of rectification module, at resistance of counter link serial connection and stabilivolt.
The beneficial effects of the utility model are, structural design is new reasonable, can monitor lightning current and the action counting of measuring more than the second gear in real time to operating lightning arrester, and result of use is good, and security is good, and the life-span is long.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an electrical block diagram of the present utility model.
1. iron cores among the figure, 11. windings, 2. iron core, 21. windings, 3. plastic housing, 4. metallic shield, 5. contact rod.
Embodiment
As Fig. 1, lighting current sensor shown in Figure 2, iron core 1 and iron core 2 with ring type body of using two different-diameters that are processed into a kind of permeability magnetic material, the internal diameter of iron core 1 is greater than the external diameter of iron core 2, iron core 2 is arranged in the iron core 1, be wound with two of the different numbers of turn in same line footpath independently winding 11 and windings 21 on iron core 1 and the iron core 2 respectively, iron core 1 is outside equipped with plastic housing 3, the plastic housing 3 outer metallic shields 4 that are set with, 21 of plastic housing 3 and winding 11 and windings are provided with insulating epoxy, the center of iron core 2 is provided with contact rod 5, contact rod 5 upper ends are connected with the lightning arrester lower end, the lower end is connected with nonlinear resistor, nonlinear resistor ground connection, winding 11 and winding 21 two ends each and one group of rectification module, rectification module is made up of rectifier cell and capacitor.Output terminal at rectification module respectively connects a counter, at resistance of counter link serial connection and stabilivolt.
Claims (1)
1. lighting current sensor, it is characterized in that: iron core (1) and iron core (2) with ring type body of using two different-diameters that are processed into a kind of permeability magnetic material, the internal diameter of iron core (1) is greater than the external diameter of iron core (2), iron core (2) is arranged in the iron core (1), be wound with two of the different numbers of turn in same line footpath independently winding (11) and windings (21) on iron core (1) and the iron core (2) respectively, iron core (1) is outside equipped with plastic housing (3), the outer metallic shield (4) that is set with of plastic housing (3), between plastic housing (3) and winding (11) and winding (21) insulating epoxy is set, the center of iron core (2) is provided with contact rod (5), contact rod (5) upper end is connected with the lightning arrester lower end, the lower end is connected with nonlinear resistor, nonlinear resistor ground connection, winding (11) and winding (21) two ends each and one group of rectification module, rectification module is made up of rectifier cell and capacitor, respectively connects a counter at the output terminal of rectification module, at resistance of counter link serial connection and stabilivolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026051 CN2700888Y (en) | 2004-04-06 | 2004-04-06 | Thunder current transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026051 CN2700888Y (en) | 2004-04-06 | 2004-04-06 | Thunder current transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700888Y true CN2700888Y (en) | 2005-05-18 |
Family
ID=34771110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420026051 Expired - Fee Related CN2700888Y (en) | 2004-04-06 | 2004-04-06 | Thunder current transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700888Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819224A (en) * | 2010-04-12 | 2010-09-01 | 重庆大学 | Lightning current measuring transducer based on differential ring |
-
2004
- 2004-04-06 CN CN 200420026051 patent/CN2700888Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819224A (en) * | 2010-04-12 | 2010-09-01 | 重庆大学 | Lightning current measuring transducer based on differential ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |