CN202258582U - Extra-high voltage direct-current field post insulator piezometer ring device - Google Patents
Extra-high voltage direct-current field post insulator piezometer ring device Download PDFInfo
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- CN202258582U CN202258582U CN2011203410936U CN201120341093U CN202258582U CN 202258582 U CN202258582 U CN 202258582U CN 2011203410936 U CN2011203410936 U CN 2011203410936U CN 201120341093 U CN201120341093 U CN 201120341093U CN 202258582 U CN202258582 U CN 202258582U
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- post insulator
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- high voltage
- voltage direct
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Abstract
The utility model discloses an extra-high voltage direct-current field post insulator piezometer ring device which is characterized by comprising an upper circular piezometer ring and a lower circular piezometer ring, wherein the upper circular piezometer ring is arranged above a post insulator high-voltage end tubular bus and the lower circular piezometer ring is arranged below the post insulator high-voltage end tubular bus, and a post insulator is used as a ground main insulator, and can be a porcelain core compound jacket or glass fiber core compound jacket post insulator. The extra-high voltage direct-current field post insulator piezometer ring device can furthest shield the post insulator high-voltage end tubular bus and a tubular bus connecting fitting, realizes uniform distribution of an electric field at a post insulator high-voltage end, and has the advantages of inhibiting corona and electric corrosion of an insulator high-voltage side, protecting a sealing structure of the end part, and improving safety operation reliability of the post insulator.
Description
Technical field
The utility model relates to a kind of ultra high voltage (± 800kV) dc fields post insulator grading ring device that is used for.
Technical background
The electric power energy of China is main with thermoelectricity and water power, can source distribution mainly concentrate on large-scale water power thermoelectricity base, southwest, northwest, and load center mainly concentrates on the coastal region in east China.Along with lasting, healthy, the stable development of national economy, the unbalanced contradiction of the energy and Load distribution will further be aggravated.Therefore, development high voltage, remote, jumbo power transmission mode become the basic strategy and the inevitable choice of China's energy and power industry construction.Extra-high voltage direct-current transmission because can be at a distance, a large amount of electric power energies of transmission of low-loss, no drop point, obtained flourish in China.Built in China becomes and puts into operation ± two of 800kV extra-high voltage direct-current transmission engineerings (being respectively Yunnan-Guangdong engineering and Xiang Jiaba-Shanghai engineering) at present, and has multinomial engineering building.
Post insulator is the maximum equipment of ultra high voltage current conversion station dc fields consumption, be mainly used in ± 800kV current conversion station dc fields in the insulation support and the mechanical fixation of various high voltage electric equipments (like isolating switch, dry smoothing reactor) and bus.Under direct voltage, the effect that airborne charged corpuscle can receive the constant direction electric field force is adsorbed to insulator surface, under same environmental conditions, is twice above under the comparable alternating voltage of the dirty amount of D.C. isolation sublist area.Along with the continuous increase of filth amount, the insulation level of post insulator descends thereupon.Because this electrostatic precipitation effect under the dc fields, direct current post insulator external insulation characteristic is than more becoming complicated under the interchange situation.
Owing to receive the influence of bus, equipment and the earth distribution impedance in the field domain; Post insulator high-pressure side electric field distortion is serious in the extra-high voltage direct-current field; If do not dispose grading ring, the female connection of pipe gold utensil, wire clamp electric field distortion will be very serious, cause violent corona discharge phenomenon.Post insulator is bearing the electric field strength than high several times of middle part full skirt near between near the full skirt the bus bar side flange simultaneously.If the grading ring mis-arrange will produce corona discharge in these zones and galvanic corrosion is decreased.In the junction of post insulator gold utensil and plug, because gold utensil end and silicone rubber jacket form weak interface, and it is very concentrated to locate electric field; Under filthy conditions such as misty rain, travel fatigue; Be vulnerable to galvanic corrosion and decrease, quicken the insulator deterioration, even cause the insulator fracture.Therefore, rationally, the configuration pressure-equalizing device of science, improve the Electric Field Distribution of post insulator high pressure end, be significant improving post insulator long-time running reliability.
Summary of the invention
The purpose of the utility model is to provide the grading ring device of a kind of extra-high voltage direct-current field post insulator.This grading ring device can shield the female and female gold utensil that connects of pipe of post insulator high pressure end pipe to greatest extent; Realize the Electric Field Distribution homogenizing of post insulator high-pressure side; Suppressing on high-tension side corona of insulator and galvanic corrosion decreases; The hermetically-sealed construction of protection end, the safe operation reliability of raising post insulator.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of extra-high voltage direct-current field post insulator grading ring device is characterized in that, the circular lower uniform pressure ring that is included in grading ring on the circle that post insulator high-pressure side pipe mother top is provided with and below high-pressure side pipe mother, is provided with.
In the such scheme, said post insulator is porcelain core composite sheath or the housed post insulator of glass fiber.Be positioned at L type corner, extra-high voltage direct-current field, T type corner, or with the direct connecting place of isolating switch.The upper and lower grading ring of said circle is connected respectively on the flange of post insulator high-pressure side through metallic support.
Through the simulation calculation that ultra high voltage current conversion station dc fields post insulator Electric Field Distribution is carried out; The grading ring apparatus structure of the extra-high voltage direct-current field post insulator of confirmation the utility model is reasonable; Shield effectiveness is good, can realize the homogenizing of post insulator high-pressure side Electric Field Distribution to greatest extent, suppress post insulator high pressure side pipe female connect gold utensil corona and galvanic corrosion decrease; Protect the hermetically-sealed construction of end, effectively improve the safe operation reliability of insulator.
Description of drawings
Fig. 1 is an embodiment of the utility model extra-high voltage direct-current field post insulator (being positioned at L type corner) pressure-equalizing device.Among the figure: 1, grading ring on the circle; 2, circular lower uniform pressure ring; 3, pillar; 4, pipe is female; 5, connect gold utensil.
Fig. 2 is another embodiment of the utility model extra-high voltage direct-current field post insulator (being positioned at T type corner) pressure-equalizing device.
Fig. 3 is another embodiment of the utility model extra-high voltage direct-current field post insulator (being positioned at and the isolating switch connecting place) pressure-equalizing device.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Fig. 1～Fig. 3 is three various embodiment of the utility model, and its common frame mode is: above post insulator 3 high-pressure side pipes female 4, grading ring 1 on the circle is set, below post insulator high-pressure side pipe female 4, a circular lower uniform pressure ring 2 is set.Circular grading ring is connected respectively to through metallic support on the flange of post insulator high-pressure side (not drawing among the figure).Post insulator 3 is porcelain core composite sheath or the housed post insulator of glass fiber as main insulation over the ground, be positioned at L type corner, T type corner or with three types of post insulators of isolating switch connecting place.Upper and lower grading ring 1,2 all adopts metal material (like aluminium alloy) to process.The concrete parameter of circular upper and lower grading ring (ring footpath, caliber, installation site) need specifically confirm for the post insulator of confirming, have one group of best grading ring parameter corresponding with it through ultra high voltage current conversion station dc fields being carried out the electric field simulation calculation.
As shown in Figure 1, above being positioned at L type corner post insulator 3 high-pressure side pipe mothers, grading ring 1 on the circle is set, in order to the female gold utensil 5 that is connected of shielded-plate tube female 4 and pipe.A circular lower uniform pressure ring 2 is set, in order to shielding post insulator high-pressure side flange end cluster parachute, sheath and hermetically-sealed construction below post insulator high-pressure side pipe mother.Circular upper and lower grading ring is connected respectively to through metallic support on the flange of post insulator high-pressure side, with the female gold utensil equipotential that is connected of high-pressure side flange, pipe mother and pipe.
As shown in Figure 2, above being positioned at T type corner post insulator 3 high-pressure side pipe mothers, grading ring 1 on the circle is set, in order to the female gold utensil 5 that is connected of shielded-plate tube female 4 and pipe.A circular lower uniform pressure ring 2 is set, in order to shielding post insulator high-pressure side flange end cluster parachute, sheath and hermetically-sealed construction below post insulator high-pressure side pipe mother.Circular upper and lower grading ring is connected respectively to through metallic support on the flange of post insulator high-pressure side, with the female gold utensil equipotential that is connected of high-pressure side flange, pipe mother and pipe.
As shown in Figure 3, be positioned at isolating switch connecting place post insulator 3 high-pressure side pipe mothers above grading ring 1 on the circle is set, be connected gold utensil 5 in order to shielded-plate tube female 4 with the pipe mother.A circular lower uniform pressure ring 2 is set, in order to shielding post insulator high-pressure side flange end cluster parachute, sheath and hermetically-sealed construction below post insulator high-pressure side pipe mother.Circular upper and lower grading ring is connected respectively to through metallic support on the flange of post insulator high-pressure side, with the female gold utensil equipotential that is connected of high-pressure side flange, pipe mother and pipe.
Claims (4)
1. an extra-high voltage direct-current field post insulator grading ring device is characterized in that, the circular lower uniform pressure ring that is included in grading ring on the circle that post insulator high-pressure side pipe mother top is provided with and below high-pressure side pipe mother, is provided with.
2. extra-high voltage direct-current as claimed in claim 1 field post insulator grading ring device is characterized in that, said post insulator is porcelain core composite sheath or the housed post insulator of glass fiber.
3. extra-high voltage direct-current as claimed in claim 1 field post insulator grading ring device is characterized in that the upper and lower grading ring of said circle is connected respectively on the flange of post insulator high-pressure side through metallic support.
4. extra-high voltage direct-current as claimed in claim 2 field post insulator grading ring device is characterized in that, said post insulator is positioned at L type corner, extra-high voltage direct-current field, T type corner, or with the direct connecting place of isolating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203410936U CN202258582U (en) | 2011-09-13 | 2011-09-13 | Extra-high voltage direct-current field post insulator piezometer ring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203410936U CN202258582U (en) | 2011-09-13 | 2011-09-13 | Extra-high voltage direct-current field post insulator piezometer ring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258582U true CN202258582U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203410936U Expired - Lifetime CN202258582U (en) | 2011-09-13 | 2011-09-13 | Extra-high voltage direct-current field post insulator piezometer ring device |
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| CN (1) | CN202258582U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564627A (en) * | 2017-08-03 | 2018-01-09 | 南方电网科学研究院有限责任公司 | A kind of component comprising support insulator and grading ring |
| CN108493783A (en) * | 2018-04-18 | 2018-09-04 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of angular group converter transformer valve side connection outlet structure |
| CN108597698A (en) * | 2018-05-30 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of grading ring that discharge path is controllable |
| CN109300635A (en) * | 2018-11-19 | 2019-02-01 | 国家电网有限公司 | Start-up resistor is used in a kind of transmission of electricity of high pressure flexible direct current |
| CN111413554A (en) * | 2019-01-04 | 2020-07-14 | 清华大学 | GIS/GI L insulator surface potential measuring device |
-
2011
- 2011-09-13 CN CN2011203410936U patent/CN202258582U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564627A (en) * | 2017-08-03 | 2018-01-09 | 南方电网科学研究院有限责任公司 | A kind of component comprising support insulator and grading ring |
| CN108493783A (en) * | 2018-04-18 | 2018-09-04 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of angular group converter transformer valve side connection outlet structure |
| CN108493783B (en) * | 2018-04-18 | 2024-04-26 | 中国电力工程顾问集团西南电力设计院有限公司 | Corner-group converter transformer valve side connection outlet structure |
| CN108597698A (en) * | 2018-05-30 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of grading ring that discharge path is controllable |
| CN108597698B (en) * | 2018-05-30 | 2023-10-27 | 中国电力科学研究院有限公司 | Equalizing ring with controllable discharge path |
| CN109300635A (en) * | 2018-11-19 | 2019-02-01 | 国家电网有限公司 | Start-up resistor is used in a kind of transmission of electricity of high pressure flexible direct current |
| CN111413554A (en) * | 2019-01-04 | 2020-07-14 | 清华大学 | GIS/GI L insulator surface potential measuring device |
| CN111413554B (en) * | 2019-01-04 | 2021-04-30 | 清华大学 | GIS/GIL insulator surface potential measuring device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |