CN203054167U - Back flashover test apparatus with insulator under combined action of power frequency and thunder and lightning - Google Patents
Back flashover test apparatus with insulator under combined action of power frequency and thunder and lightning Download PDFInfo
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- CN203054167U CN203054167U CN 201320054891 CN201320054891U CN203054167U CN 203054167 U CN203054167 U CN 203054167U CN 201320054891 CN201320054891 CN 201320054891 CN 201320054891 U CN201320054891 U CN 201320054891U CN 203054167 U CN203054167 U CN 203054167U
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Abstract
A back flashover test apparatus with an insulator under combined action of power frequency and thunder and lightning is disclosed. The back flashover test apparatus with an insulator under combined action of power frequency and thunder and lightning comprises a voltage regulator, an impulse voltage generator, a cascade stage test transformer, a voltage divider, an insulator, and a water resistance. The connection structure of the voltage regulator, the impulse voltage generator, the cascade stage test transformer, the voltage divider, the insulator, and the water resistance is characterized in that an end of the cascade stage test transformer is connected with the water resistance which is connected onto an insulator steel foot, an end of the impulse voltage generator is connected onto an insulator steel cap, the other end of the impulse voltage generator is connected onto the cascade stage test transformer, the voltage divider is connected with the impulse voltage generator in parallel, the cascade stage test transformer is connected with the voltage regulator, and the insulating steel foot is earthed through a metal isolation ball gap. The beneficial effects of the back flashover test apparatus with an insulator under combined action of power frequency and thunder and lightning are that an experiment that an end of the insulator bears power frequency while the other end bears thunder and lightning voltage in thunder and lightning back flashover processes is realized, and therefore a combined test of an insulator under action of superposed impact of power frequency can be carried out normally. The method is advantaged by simple and practicable properties, and effectiveness.
Description
Technical field
The utility model belongs to insulator power frequency and the symphyogenetic counterattack test unit of thunder and lightning technical field of structures.
Background technology
The various insulators of transmission line of electricity are in operation, and when thunderbolt during cat head, insulator will bear the acting in conjunction of power-frequency voltage and lightning impulse voltage, and the test that its insulation is subjected to only applies the lightning impulse sternness during than normal inspection merely.For carrying out the check of suspended insulator external insulation performance according to actual conditions, need carry out the Combined Trials of cap and pin and lightning impulse voltage.In Combined Trials, apply surge voltage on the insulator steel cap, apply power-frequency voltage on the steel pin, the voltage operating mode of bearing when the voltage that bears of insulator is back flashover in the actual motion like this.Because power-frequency voltage is to be applied on the steel pin of insulator, and the steel pin needs ground connection, therefore, if the steel heel ground of insulator is not kept apart, power-frequency voltage just can't be applied on the electric insulator steel foot.After between electric insulator steel foot and the ground batching sphere crack being set, can apply power-frequency voltage on the electric insulator steel foot, simultaneously the distance in ball crack arrange suitable after, after surge voltage punctures the insulator external insulation, surge voltage is gone into ground through the ball crack, and it is unaffected that the ball gap insulation recovers the back power-frequency voltage.
The utility model proposes by the batching sphere crack is set between electric insulator steel foot and ground, make power-frequency voltage can be applied on the electric insulator steel foot, the distance of batching sphere crack setting simultaneously is suitable, the assurance surge voltage can be released by the ball crack with going into, and ball gap insulation recovery back power-frequency voltage is unaffected.
Summary of the invention
The purpose of this utility model is, in insulator power frequency and combined impulse test, guarantees that power-frequency voltage can be applied on the electric insulator steel foot, and surge voltage can be released by the ball crack with going into, and the ball gap insulation recovers the back power-frequency voltage can be unaffected.Make the Combined Trials of the industrial frequency superimposed impact of insulator normally to carry out.Method has simple and effective advantage.
The utility model is realized by following technical proposal.
The symphyogenetic counterattack test unit of insulator power frequency and thunder and lightning, the utility model comprises pressure regulator, impulse voltage generator, cascaded transformer, voltage divider, insulator, water resistance; Its syndeton is: cascaded transformer one end connects water resistance, water resistance is connected on the electric insulator steel foot, and impulse voltage generator one end is connected on the insulator steel cap, and the impulse voltage generator other end is connected on the cascaded transformer; Voltage divider is in parallel with impulse voltage generator; Cascaded transformer connects with pressure regulator; Electric insulator steel foot is by metal batching sphere crack ground connection.
The clearance distance in the utility model metal batching sphere crack is set to 20mm-30mm.Guarantee that the ball crack can be breakdown, makes surge voltage go into ground through the ball crack when surge voltage punctures the insulator external insulation, it is unaffected that the ball gap insulation recovers the back power-frequency voltage.
The utility model is by after arranging the batching sphere crack between electric insulator steel foot and the ground, power-frequency voltage can have been applied on the electric insulator steel foot, simultaneously the distance in ball crack arrange suitable after, after surge voltage punctures the insulator external insulation, surge voltage is gone into ground through the ball crack, and it is unaffected that the ball gap insulation recovers the back power-frequency voltage.Guaranteed carrying out of the industrial frequency superimposed combined impulse test of insulator.
The beneficial effects of the utility model are: insulator one end bears power frequency, an end and bears the laboratory of lightning voltage situation and realize during back flashover, and the Combined Trials of the industrial frequency superimposed impact of insulator can normally be carried out.Method has simple and effective advantage.
Description of drawings
Fig. 1 is cap and pin and the symphyogenetic counterattack test unit of thunder and lightning structural representation.
Embodiment
See Fig. 1, the symphyogenetic counterattack test unit of insulator power frequency and thunder and lightning, the utility model comprises pressure regulator, impulse voltage generator, cascaded transformer, voltage divider, insulator, water resistance; Its syndeton is: cascaded transformer one end connects water resistance, water resistance is connected on the electric insulator steel foot, and impulse voltage generator one end is connected on the insulator steel cap, and the impulse voltage generator other end is connected on the cascaded transformer; Voltage divider is in parallel with impulse voltage generator; Cascaded transformer connects with pressure regulator; Electric insulator steel foot is by metal batching sphere crack ground connection.
The clearance distance in the utility model metal batching sphere crack is set to 20mm-30mm.Guarantee that the ball crack can be breakdown, makes surge voltage go into ground through the ball crack when surge voltage punctures the insulator external insulation, it is unaffected that the ball gap insulation recovers the back power-frequency voltage.
The utility model is by after arranging the batching sphere crack between electric insulator steel foot and the ground, power-frequency voltage can have been applied on the electric insulator steel foot, simultaneously the distance in ball crack arrange suitable after, after surge voltage punctures the insulator external insulation, surge voltage is gone into ground through the ball crack, and it is unaffected that the ball gap insulation recovers the back power-frequency voltage.Guaranteed carrying out of the industrial frequency superimposed combined impulse test of insulator.
Claims (2)
1. the symphyogenetic counterattack test unit of insulator power frequency and thunder and lightning is characterized in that, comprises pressure regulator, impulse voltage generator, cascaded transformer, voltage divider, insulator, water resistance; Its syndeton is: cascaded transformer one end connects water resistance, water resistance is connected on the electric insulator steel foot, and impulse voltage generator one end is connected on the insulator steel cap, and the impulse voltage generator other end is connected on the cascaded transformer; Voltage divider is in parallel with impulse voltage generator; Cascaded transformer connects with pressure regulator; Electric insulator steel foot is by metal batching sphere crack ground connection.
2. the symphyogenetic counterattack test unit of insulator power frequency according to claim 1 and thunder and lightning is characterized in that, the clearance distance in metal batching sphere crack is set to 20mm-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054891 CN203054167U (en) | 2013-01-31 | 2013-01-31 | Back flashover test apparatus with insulator under combined action of power frequency and thunder and lightning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054891 CN203054167U (en) | 2013-01-31 | 2013-01-31 | Back flashover test apparatus with insulator under combined action of power frequency and thunder and lightning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054167U true CN203054167U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320054891 Expired - Lifetime CN203054167U (en) | 2013-01-31 | 2013-01-31 | Back flashover test apparatus with insulator under combined action of power frequency and thunder and lightning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054167U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237751A (en) * | 2014-09-23 | 2014-12-24 | 广东电网有限责任公司佛山供电局 | Device for testing power frequency follow current intercepting capability of lightning protection device |
| CN105589019A (en) * | 2016-01-25 | 2016-05-18 | 西安交通大学 | Study of SF under AC superimposed impulse voltage6Gas discharge characteristic method and apparatus |
| CN106054006A (en) * | 2016-08-08 | 2016-10-26 | 国网湖南省电力公司 | Low-voltage arc starting and gap distance adjustable power-frequency freewheeling test apparatus and method |
| CN110707672A (en) * | 2019-09-10 | 2020-01-17 | 西安交通大学 | Counterattack voltage protection device of compact high-capacity lightning generating device trigger system |
-
2013
- 2013-01-31 CN CN 201320054891 patent/CN203054167U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237751A (en) * | 2014-09-23 | 2014-12-24 | 广东电网有限责任公司佛山供电局 | Device for testing power frequency follow current intercepting capability of lightning protection device |
| CN104237751B (en) * | 2014-09-23 | 2015-06-24 | 广东电网有限责任公司佛山供电局 | Device for testing power frequency follow current intercepting capability of lightning protection device |
| CN105589019A (en) * | 2016-01-25 | 2016-05-18 | 西安交通大学 | Study of SF under AC superimposed impulse voltage6Gas discharge characteristic method and apparatus |
| CN106054006A (en) * | 2016-08-08 | 2016-10-26 | 国网湖南省电力公司 | Low-voltage arc starting and gap distance adjustable power-frequency freewheeling test apparatus and method |
| CN106054006B (en) * | 2016-08-08 | 2019-04-05 | 国网湖南省电力公司 | The low pressure starting the arc and the adjustable power frequency continued flow experimental rig of clearance distance and test method |
| CN110707672A (en) * | 2019-09-10 | 2020-01-17 | 西安交通大学 | Counterattack voltage protection device of compact high-capacity lightning generating device trigger system |
| CN110707672B (en) * | 2019-09-10 | 2021-01-15 | 西安交通大学 | Counterattack voltage protection device of compact high-capacity lightning generating device trigger system |
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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: 20130710 |