title: ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº ÐÐÐ-500 ÐºÐ Ð´Ð»Ñ Ð·Ð°ÑÐ¸ÑÑ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð Ð£- 500 ÐºÐ ÐÐµÐ»Ð¾Ð²ÑÐºÐ¾Ð¹ ÐÐ Ð­Ð¡ Ð¾Ñ Ð³ÑÐ¾Ð·Ð¾Ð²ÑÑ Ð¸ Ð²Ð½ÑÑÑÐµÐ½Ð½Ð¸Ñ Ð¿ÐµÑÐµÐ½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: The determination of the main technical characteristics of the surge arrester-500 kV to protect the switchgear-500 kV of Belovskaya GRES from lightning and internal overvoltages
Creators: name: ÐÐ¸ÐºÐ¸ÑÐ¾ÑÐ¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð²Ð¾Ð·Ð´ÑÑÐ½Ð°Ñ Ð»Ð¸Ð½Ð¸Ñ
Ð¿ÐµÑÐµÐ½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð³ÑÐ¾Ð·Ð¾Ð·Ð°ÑÐ¸ÑÐ°
Ð³ÑÐ¾Ð·Ð¾Ð²Ð¾Ðµ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ
Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ñ Ð½Ð°Ð´ÐµÐ¶Ð½Ð¾ÑÑÐ¸
air line
overvoltage
threating protection
threater exposure
substation
reliability indicator

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description: The calculation of quasi-steady overvoltages affecting surge arresters installed on the busbars of ORU-500 kV BelGRES, quasi-steady overvoltages affecting arrester-500 kV in linear cells of RU-500 kV BelGRES, quasi-steady overvoltages in the symmetrical mode of unilaterally switched on 500 kV overhead lines from external substations , quasi-steady overvoltages in the single-sided power supply mode of the 500 kV overhead line from external substations with a single-phase short circuit, quasi-steady-state overvoltages in the open-phase mode of one-sidedly connected 500 kV overhead lines, forced voltages in the linear cells of the ORU-500 BelGRES, determination of the highest long-term permissible operating voltage of the surge arrester. The isolation of the protected equipment is also coordinated with the characteristics of the surge arrester. The protective level is calculated for switching overvoltages, the rated current for switching overvoltages, as well as the energy intensity of the surge arrester. Using simplified methods, the values of lightning surges are determined. Most of all the necessary calculations were simulated in the EMTP-RV software environment using an experimental model. The main technical requirements for the characteristics of the surge arrester-500 kV for the outdoor switchgear-500 kV of Belovskaya GRES are given.