Extra-high-voltage dry hollow smoothing reactor

A smoothing reactor and reactor technology, applied in the direction of transformer/inductor cooling, transformer/inductor coil/winding/connection, signal inductance without magnetic core, etc., can solve insulator breakage, electric field distortion, discharge and other problems to achieve the effect of increasing the support height, solving the electric field distortion and improving the support strength

Inactive Publication Date: 2013-07-03
BEIJING POWER EQUIP GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Furthermore, due to the influence of the distributed impedance of the busbar and the ground in the DC transmission system, the electric field distortion along the extension direction of the post insulator is relatively serious, causing the potential of each post insulator to be different, which is prone to discharge phenomenon and electrical corrosion damage
Especially in severe weather conditions such as rain, fog, wind and dust, it is easier to aggravate the deterioration of the insulator, and even cause the insulator to break

Method used

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  • Extra-high-voltage dry hollow smoothing reactor
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Examples

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no. 1 example

[0050] Figure 5 A structural schematic diagram of the first embodiment of the post insulator supporting structure of the present invention is shown. Such as Figure 5 As shown, the insulating support includes 12 post insulators 211, and each post insulator 211 is perpendicular to the ground. The insulator 213 of each post insulator 211 is a porcelain insulator.

[0051] The bottom of each post insulator 211 has a height-adjustable base plate 215 . The installation height of each post insulator 211 can be guaranteed to be the same by adjusting the base plate 215 .

[0052] This vertical support method occupies a small area, and the cost of the porcelain insulating support is low, which is convenient for popularization.

no. 2 example

[0054] Figure 6 A structural schematic diagram of the second embodiment of the post insulator supporting structure of the present invention is shown. Such as Figure 6 As shown, the insulation support includes 12 post insulators 211, and the included angle between each post insulator 211 and the ground is the same, and both are less than 90° and greater than or equal to 75°, that is, the post insulators 211 adopt an oblique support structure. The insulator 213 of each post insulator 211 is a composite insulator.

[0055] The top of each post insulator 211 has an insulator upper bracket 216 connected to the supporting platform, and the bottom has an insulator lower bracket 217 to improve the supporting strength. The upper bracket 216 of the insulator and the lower bracket of the insulator have the switching function of different link sizes.

[0056] This inclined support method has better seismic performance than vertical supports.

[0057] It can be seen from the above-me...

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PUM

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Abstract

The invention provides an extra-high-voltage dry hollow smoothing reactor, comprising a reactor coil, an insulating bracket, a rain-proof noise-reducing device, an arrester and an electric field shielding piece, wherein the insulating bracket is supported at the bottom of the reactor coil; the rain-proof noise-reducing device is wrapped outside the reactor coil; the arrester is connected with the reactor coil in parallel; the insulating bracket comprises a plurality of supporting insulators and at least one horizontally arranged insulator tie bar platform; each supporting insulator comprises a plurality of insulators which are connected in series through end part flanges; and the insulator tie bar platform is connected with the end part flanges of the insulators at the same level of each supporting insulator, so that the insulators at the same level have the same electric potential. The coil of the extra-high-voltage dry hollow smoothing reactor can meet the requirements of a +/- 800 kv or +/- 1,100 kv direct current power transmission project on voltage, current and impact level and can meet the requirements of an extra-high-voltage direct current power transmission project on ground insulating level and seismic intensity.

Description

technical field [0001] The invention relates to ultra-high voltage direct current transmission technology, in particular to a dry-type air-core smoothing reactor suitable for ±800kv or ±1100kv ultra-high voltage direct current transmission. Background technique [0002] The development of large-capacity, high-efficiency, and long-distance advanced transmission technologies such as UHV is a clear requirement put forward by the national "Twelfth Five-Year Plan". The development of UHV is the top priority of the "Twelfth Five-Year Plan" power grid development, and the DC transmission project is an important part of it. UHV dry-type air-core smoothing reactor, as the main equipment in the UHV DC transmission project, is connected in series in the system and is an indispensable key main equipment for the normal operation of the converter station. It can limit the overcurrent when the voltage collapses on the inverter side, stabilize the ripple in the transmitted DC current, prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/02H01F27/30H01F27/32H01F27/28H01F27/08
Inventor 吴玉坤张月华张猛刘成柱李德良王楠
Owner BEIJING POWER EQUIP GRP
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