
Задачей работы ÑвлÑетÑÑ Ð²Ñ‹Ð±Ð¾Ñ€ конÑтрукции и оÑÐ½Ð¾Ð²Ð½Ñ‹Ñ Ñ€Ð°Ð·Ð¼ÐµÑ€Ð¾Ð² выÑоковольтной чаÑти транÑформатора тока ТГФ-750 кВ, удовлетворÑÑŽÑ‰Ð¸Ñ Ð·Ð°Ð´Ð°Ð½Ð½Ñ‹Ð¼ Ñ‚ÐµÑ Ð½Ð¸Ñ‡ÐµÑким уÑловиÑм. Ð’ Ñ Ð¾Ð´Ðµ работы была предложена конÑÑ‚Ñ€ÑƒÐºÑ†Ð¸Ñ Ñ‚Ñ€Ð°Ð½Ñформатора тока и выполнены оптимизационные раÑчёты, позволившие выбрать оÑновные размеры выÑоковольтной ÑиÑтемы. Показано, что напрÑжённоÑть ÑлектричеÑкого Ð¿Ð¾Ð»Ñ Ð² газовой изолÑции, а также в Ð²Ð¾Ð·Ð´ÑƒÑ Ðµ на внешней Ñтороне транÑформатора не превышает допуÑтимого уровнÑ. Ð”Ð»Ñ ÑƒÐ¼ÐµÐ½ÑŒÑˆÐµÐ½Ð¸Ñ Ñ€Ð°Ð·Ð¼ÐµÑ€Ð¾Ð² аппарата предложено иÑпользовать диÑлектричеÑкий Ñкран Ñ Ð²Ñ‹Ñокой диÑлектричеÑкой проницаемоÑтью. Показано, что при толщине Ñкрана, равной 1 мм и при отноÑительной диÑлектричеÑкой проницаемоÑти, равной 800, Ñ€Ð°Ð´Ð¸ÑƒÑ Ð¸Ð·Ð¾Ð»Ð¸Ñ€ÑƒÑŽÑ‰ÐµÐ¹ оболочки может быть уменьшен на 20%, что ÑоответÑтвует уменьшению объёма на 40%. Ðто даёт возможноÑть изготовить аппарат клаÑÑа 750 кВ в Ñ€Ð°Ð·Ð¼ÐµÑ€Ð°Ñ , Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð½Ñ‹Ñ Ð´Ð»Ñ ÐºÐ»Ð°ÑÑа 500 кВ.
The aim of the work is the design and choice of size of the high-voltage transformer of the TGF-750 kV, satisfy the given specifications. In the course of the workthe current transformer design was proposed and the optimization calculations carried out, allowing to select the main dimensions of the high-voltage system. It is shown that the electric field in the gas insulation, and in the air on the outer side of the transformer does not exceed the permissible level. To reduce the size of the device is proposed to use a screen with high dielectric permittivity. It is shown that the radius of the insulating cover can be reduced by 20%, which corresponds to a reduction of volume of 40%. This makes it possible to produce a level of 750 kV machine in size, characteristic of the level 500 kV.
ÑÑанÑÑоÑмаÑÐ¾Ñ Ñока, current transformer, electric field high-voltage shielding, ÑлекÑÑиÑеÑкое поле, вÑÑоковолÑÑное ÑкÑаниÑование, electric field strength
ÑÑанÑÑоÑмаÑÐ¾Ñ Ñока, current transformer, electric field high-voltage shielding, ÑлекÑÑиÑеÑкое поле, вÑÑоковолÑÑное ÑкÑаниÑование, electric field strength
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