title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ Ð¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ¸ Ð¿Ð¾Ð½Ð¸Ð¶Ð°ÑÑÐµÐ¹ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¸ 110/35/10/6 ÐºÐ
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: Design of relay protection and automation of a step-down substation 110/35/10/6 kV
Creators: name: ÐÐ¾ÑÐºÐ¸Ð½, ÐÐ»Ð°Ð´Ð¸ÑÐ»Ð°Ð²
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: 2020
Subjects: ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ñ
ÑÐµÐ»ÐµÐ¹Ð½Ð°Ñ Ð·Ð°ÑÐ¸ÑÐ°
Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ðµ Ð½ÐµÐ¹ÑÑÐ°Ð»Ð¸
Ð¾Ð´Ð½Ð¾ÑÐ°Ð·Ð½Ð¾Ðµ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ðµ
ÑÐ¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ
Ð´ÑÐ³Ð¾Ð²Ð°Ñ Ð·Ð°ÑÐ¸ÑÐ°
electrical substation
power system
protection
earthing system
phase-to-ground fault
shortcircuit currents
arc protection

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ Ð¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ¸ Ð¿Ð¾Ð½Ð¸Ð¶Ð°ÑÑÐµÐ¹ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¸ 110/35/10/6 ÐºÐÂ». Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ Ð¿Ð¾Ð½Ð¸Ð¶Ð°ÑÑÐµÐ¹ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¸. Ð Ð°ÑÑÑÐ¸ÑÐ°Ð½Ñ ÑÐ¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ, Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð° Ð¿ÑÐ¾Ð²ÐµÑÐºÐ° Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ ÑÑÐ»Ð¾Ð²Ð¸ÑÐ¼ ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÐ¾Ð¹ÐºÐ¾ÑÑÐ¸. ÐÐ»Ñ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÐ¾Ð² ÑÐ¾ÐºÐ° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° Ð¿ÑÐ¾Ð²ÐµÑÐºÐ° Ð¿Ð¾ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð²ÑÐ¾ÑÐ¸ÑÐ½Ð¾Ð¹ Ð½Ð°Ð³ÑÑÐ·ÐºÐ¸ Ð¸ Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð¾Ð¹ ÐºÑÐ°ÑÐ½Ð¾ÑÑÐ¸. ÐÐ»Ñ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÐ¾Ð² Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð±ÑÐ»Ð° Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð° Ð¿ÑÐ¾Ð²ÐµÑÐºÐ° Ð¿Ð¾ Ð¿Ð°Ð´ÐµÐ½Ð¸Ñ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð²Ð¾ Ð²ÑÐ¾ÑÐ¸ÑÐ½ÑÑ ÑÐµÐ¿ÑÑ. ÐÑÐ»Ð° ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð° Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÑ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸ ÑÐ¾ÐºÐ¾Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐ¸Ð²Ð°ÑÑÐµÐ³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° Ð½Ð° Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¸ 6 ÐºÐ. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÑÑÐ°Ð±Ð°ÑÑÐ²Ð°Ð½Ð¸Ñ Ð·Ð°ÑÐ¸Ñ Ð¾Ñ Ð¼ÐµÐ¶Ð´ÑÑÐ°Ð·Ð½ÑÑ Ð¸ Ð¾Ð´Ð½Ð¾ÑÐ°Ð·Ð½ÑÑ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ð¹. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ¶Ð¸Ð¼Ñ ÑÐ°Ð±Ð¾ÑÑ Ð½ÐµÐ¹ÑÑÐ°Ð»Ð¸ Ð² ÑÐµÑÐ¸ 35 ÐºÐ, 10 ÐºÐ Ð¸ 6 ÐºÐ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐµÑÐµÐ½Ð¸Ð¹ Ð¿Ð¾ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐµÐ½Ð¸Ñ ÑÐ¾ÐºÐ¾Ð² Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ Ð½Ð° Ð·ÐµÐ¼Ð»Ñ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð° ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÑÑÑÐ¾Ð¹ÑÑÐ² Ð·Ð°ÑÐ¸ÑÑ Ð¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ¸, ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ñ ÑÑÐµÐµÐº ÐÐ Ð£, ÑÐ¸ÑÑÐµÐ¼Ð° Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½Ð¾Ð³Ð¾ Ð¸ Ð¿ÐµÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ¾ÐºÐ°, Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ¸Ð½Ð¾Ðº Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ, ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð´ÑÐ³Ð¾Ð²Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ Ð² ÑÑÐµÐ¹ÐºÐ°Ñ ÐÐ Ð£. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð¸Ð°Ð»ÑÐ½ÑÐµ ÑÑÐµÐ¼Ñ ÑÑÐµÐµÐº Ð²Ð²Ð¾Ð´Ð°, ÑÐµÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»Ñ Ð¸ Ð¾ÑÑÐ¾Ð´ÑÑÐµÐ¹ Ð»Ð¸Ð½Ð¸Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾- Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐµÐ¼Ñ Ð¼Ð¸ÐºÑÐ¾Ð¿ÑÐ¾ÑÐµÑÑÐ¾ÑÐ½ÑÑ ÑÑÑÑÐ¾Ð¹ÑÑÐ² ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ Ð¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ¸.
description: The subject of the graduate qualification work is "Design of relay protection and automation of a step-down substation 110/35/10/6 kV." The design of the relay protection of the step-down substation is made in this project. Short-circuit currents were calculated, equipment is selected by the thermostability and electrodynamic resistance. For current transformers, a check was also performed on the power of the secondary load and the maximum multiplicity. For voltage transformers, a voltage drop test in the secondary circuits was performed. 4 The necessity of installing a current-limiting reactor at a voltage of 6 kV was considered. The calculation of the parameters of the interphase and single-phase faults protection is made. The operating modes of the earthing systems in the 35 kV, 10 kV and 6 kV power systems, also the analysis of solutions to limit the earth fault currents are considered. The joint operation of protection and automation devices, the design of switchgear cells, the system of operational direct and alternating current, the organization of power and control buses, the ways of organizing arc protection in switchgear cells are considered. The electrical schematic diagrams of input cells, a sectional switch and an outgoing line, as well as functional logic circuits of microprocessor relay protection and automation devices are presented.