CN201549353U - Voltage-equalizing device of extra-high voltage dry-type smoothing reactor - Google Patents
Voltage-equalizing device of extra-high voltage dry-type smoothing reactor Download PDFInfo
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- CN201549353U CN201549353U CN2009200323233U CN200920032323U CN201549353U CN 201549353 U CN201549353 U CN 201549353U CN 2009200323233 U CN2009200323233 U CN 2009200323233U CN 200920032323 U CN200920032323 U CN 200920032323U CN 201549353 U CN201549353 U CN 201549353U
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Abstract
The utility model discloses a voltage-equalizing device of an extra-high voltage dry-type smoothing reactor. The device is characterized in that: the voltage-equalizing device comprises a set of sectional-type upper voltage-equalizing rings which are arranged at the tip of the upper side of the reactor body, at least one set of sectional-type lower voltage-equalizing rings which are arranged at the tip of the lower side of the reactor body; the tip of the lower side of the reactor body is connected with a support column insulator to be used as grounded main insulation; the sectional-type upper/lower voltage-equalizing rings divide a whole circular ring into a plurality of arc sections and are respectively connected to circular tips at upper/lower sides of the reactor body. The voltage-equalizing device of the extra-high voltage dry-type smoothing reactor realizes uniformization of the end electric field distribution of the dry-type smoothing reactor and the support column insulator to the utmost extent, inhibits the corona and the electrical erosion damage of the dry-type smoothing reactor tip and the support column insulator high-voltage side, protects a seal structure of the tip, and increases the reliability of safe running of the dry-type smoothing reactor.
Description
Technical field
The utility model relate to a kind of be used for the direct current ultra high voltage (± 800kV), with post insulator as the pressure-equalizing device of the dry smoothing reactor of main insulation over the ground.
Technical background
Growth along with national economy, China's need for electricity constantly increases, it is inevitable that the natural conditions of China and the characteristic distributions of the energy and load center make that the electric power transfer of overlength distance, vast capacity becomes, be the loss of minimizing transmission line and the land resource of saves valuable, need a kind of extra-high voltage direct-current transmission mode of economical and efficient.
Smoothing reactor is ± one of the most important equipment of 800kV DC transmission engineering, and the overcurrent during for restriction inversion side voltage collapse, stabilize ripple in the transmission direct current, the overvoltage that prevents to intrude into current conversion station along DC line is to the influence of converter valve insulation and keeps under the running on the lower load that direct current is uninterrupted etc. to have an important effect.
Smoothing reactor is in high potential, and its end electric field is concentrated, and need take screening arrangement that it is improved.Post insulator supports as the insulation against ground of dry smoothing reactor, in DC transmission system, be subjected to the influence of bus, reactor and the earth distribution impedance, make post insulator bus bar side electric field distortion more serious, particularly, bearing electric field strength than high several times of middle part full skirt near between near the full skirt bus and the reactor side flange.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 dry smoothing reactor end and post insulator end, the safe and reliable operation that improves the ultra high voltage smoothing reactor is significant.
Summary of the invention
The purpose of this utility model is to provide a kind of pressure-equalizing device of extra-high voltage DC transmission system dry smoothing reactor; this device can be realized the Electric Field Distribution homogenizing of dry smoothing reactor and post insulator to greatest extent; suppressing dry smoothing reactor end and the on high-tension side corona of post insulator and galvanic corrosion decreases; protect the hermetically-sealed construction of end, effectively improve the safe operation reliability of dry smoothing reactor.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of pressure-equalizing device of extra-high voltage dry type smoothing reactor, it is characterized in that, be included in reactor device grading ring on the component segmentation that is provided with of side end, at least one component segmentation lower uniform pressure ring of being provided with at reactor device body downside end on one's body, the conduct of reactor device body downside end connecting struts insulator is main insulation over the ground, the upper and lower grading ring of described segmented is that circular integral loop is divided into some segmental arcs, and is connected respectively to reactor device downside rounded ends on one's body.
In the such scheme, describedly two component segmentation lower uniform pressure rings are set at reactor device body downside end, wherein one group concordant with the smoothing reactor downside end, another group places smoothing reactor downside end below.Perhaps one component segmentation lower uniform pressure ring is set, in each post insulator high-pressure side the roundlet grading ring is set simultaneously at reactor device body downside end.Described roundlet grading ring is closed loop or opening annulus.
The upper and lower grading ring of described segmented is that circular integral loop is divided into 6 sections～9 sections.Described reactor device body downside end connecting struts insulator conduct is main insulation over the ground, and described post insulator is straight support formula structure or diagonal-bracing type structure.
The applicant has carried out simulation calculation to the Electric Field Distribution of extra-high voltage direct-current transmission equipment dry smoothing reactor; confirm the pressure-equalizing device of extra-high voltage DC transmission system of the present utility model with dry smoothing reactor; configuration structure is reasonable; can realize the end Electric Field Distribution homogenizing of dry smoothing reactor and post insulator to greatest extent; effectively suppressing dry smoothing reactor end and the on high-tension side corona of post insulator and galvanic corrosion decreases; the hermetically-sealed construction of protection end, the safe operation reliability of raising dry smoothing reactor.
Description of drawings
Fig. 1 directly supports an embodiment of formula dry smoothing reactor pressure-equalizing device for the utility model.Among the figure: 1, upper end segmented grading ring; 2, reactor device body; 3, lower end segmented grading ring; 4, post insulator.
Fig. 2 directly supports another embodiment of formula dry smoothing reactor pressure-equalizing device for the utility model.Among the figure: 5, roundlet grading ring.
Fig. 3 is an embodiment of the utility model diagonal-bracing type dry smoothing reactor pressure-equalizing device.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1～Fig. 3 is three different embodiment of the present utility model, and its common frame mode is: be provided with a component segmentation grading ring 1, at reactor device body 2 downside ends one component segmentation grading ring 3 be set at least at reactor device body 2 upper side ends.
As shown in Figure 1, dispose a component segmentation grading ring 1, place smoothing reactor upper side end top, in order to shielding smoothing reactor upper side end electric field in reactor device body 2 upper ends.The bottom disposes two component segmentation grading rings, wherein one group concordant with the smoothing reactor downside end, another group places smoothing reactor downside end below, and each is organized the grading ring segmental arc and is connected to smoothing reactor device body 2 upper and lower side ends with support, with smoothing reactor device body equipotential.
As shown in Figure 2, dispose a component segmentation grading ring 1 in reactor device body 2 upper ends; The bottom disposes one group of segmented grading ring 3 concordant with the smoothing reactor downside end, and the segmental arc of segmented grading ring 1,3 is connected to smoothing reactor upper and lower sides end with support, with smoothing reactor device body equipotential.Each post insulator 4 high-pressure side disposes roundlet grading ring 5, and is connected on the post insulator 4 high-pressure side flanges, with the flange equipotential with support.
The straight support formula extra-high voltage dry type smoothing reactor of Fig. 1 Fig. 2 embodiment can be composed in series by two reactors, and as main insulation over the ground, other has two bus post insulators to each reactor by eight post insulators 4.Post insulator 4 is porcelain or complete compound or porcelain core composite insulator.
For diagonal-bracing type extra-high voltage dry type smoothing reactor, dispose a component segmentation grading ring 1 in reactor device body 2 upper ends, the bottom disposes a component segmentation grading ring 3, place smoothing reactor downside end below, grading ring 1,3 segmental arcs are connected to smoothing reactor device body downside end with support, with smoothing reactor device body equipotential.When upper end configuration shading rain cap and muffler, can not dispose segmented grading ring 1, as shown in Figure 3,
Diagonal-bracing type extra-high voltage dry type smoothing reactor shown in Figure 3 also can be composed in series by two reactors, and as main insulation over the ground, other has three bus post insulators to each reactor by 12 post insulators.
The hop count of segmented grading ring 1,3 can be divided into 6 sections～9 sections, and ring footpath and caliber can be according to all pressing shield effectiveness to determine.Segmented grading ring 1,3 all adopts metal material to make.
Roundlet grading ring 5 can be that closed loop also can be a split ring, and ring footpath and caliber can be according to all pressing shield effectiveness to determine.
Claims (6)
1. the pressure-equalizing device of an extra-high voltage dry type smoothing reactor, it is characterized in that, be included in reactor device grading ring on the component segmentation that is provided with of side end, at least one component segmentation lower uniform pressure ring of being provided with at reactor device body downside end on one's body, the conduct of reactor device body downside end connecting struts insulator is main insulation over the ground, the upper and lower grading ring of described segmented is that circular integral loop is divided into some segmental arcs, and is connected respectively to reactor device downside rounded ends on one's body.
2. the pressure-equalizing device of extra-high voltage dry type smoothing reactor as claimed in claim 1, it is characterized in that, at reactor device body downside end two component segmentation lower uniform pressure rings are set, wherein one group concordant with the smoothing reactor downside end, another group places smoothing reactor downside end below.
3. the pressure-equalizing device of extra-high voltage dry type smoothing reactor as claimed in claim 1 is characterized in that, at reactor device body downside end one component segmentation lower uniform pressure ring is set, and in each post insulator high-pressure side the roundlet grading ring is set simultaneously.
4. the pressure-equalizing device of extra-high voltage dry type smoothing reactor as claimed in claim 3 is characterized in that, described roundlet grading ring is closed loop or opening annulus.
5. the pressure-equalizing device of extra-high voltage dry type smoothing reactor as claimed in claim 1 is characterized in that, the upper and lower grading ring of described segmented is that circular integral loop is divided into 6 sections～9 sections.
6. the pressure-equalizing device of extra-high voltage dry type smoothing reactor as claimed in claim 1 is characterized in that, described reactor device body downside end connecting struts insulator conduct is main insulation over the ground, and described post insulator is straight support formula structure or diagonal-bracing type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200323233U CN201549353U (en) | 2009-03-24 | 2009-03-24 | Voltage-equalizing device of extra-high voltage dry-type smoothing reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200323233U CN201549353U (en) | 2009-03-24 | 2009-03-24 | Voltage-equalizing device of extra-high voltage dry-type smoothing reactor |
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| Publication Number | Publication Date |
|---|---|
| CN201549353U true CN201549353U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200323233U Expired - Fee Related CN201549353U (en) | 2009-03-24 | 2009-03-24 | Voltage-equalizing device of extra-high voltage dry-type smoothing reactor |
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| CN (1) | CN201549353U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866331A (en) * | 2012-09-11 | 2013-01-09 | 青海电力科学试验研究院 | In-situ local discharging test interference resistance method for converter transformer in high altitude areas |
| CN105513771A (en) * | 2015-12-15 | 2016-04-20 | 国网北京市电力公司 | Voltage balancing device of electric reactor |
| CN106981359A (en) * | 2017-05-10 | 2017-07-25 | 国家电网公司 | One kind ± 1100kV line filter reactor pressure-equalizing devices |
| CN111177959A (en) * | 2019-12-19 | 2020-05-19 | 清华大学 | Optimization design method of smoothing reactor |
-
2009
- 2009-03-24 CN CN2009200323233U patent/CN201549353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866331A (en) * | 2012-09-11 | 2013-01-09 | 青海电力科学试验研究院 | In-situ local discharging test interference resistance method for converter transformer in high altitude areas |
| CN105513771A (en) * | 2015-12-15 | 2016-04-20 | 国网北京市电力公司 | Voltage balancing device of electric reactor |
| CN106981359A (en) * | 2017-05-10 | 2017-07-25 | 国家电网公司 | One kind ± 1100kV line filter reactor pressure-equalizing devices |
| CN106981359B (en) * | 2017-05-10 | 2019-09-13 | 国家电网公司 | One kind ± 1100kV line filter reactor pressure-equalizing device |
| CN111177959A (en) * | 2019-12-19 | 2020-05-19 | 清华大学 | Optimization design method of smoothing reactor |
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| 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: 20100811 Termination date: 20110324 |