Проект реконструкции подстанции 110/6 кВ Опорная-6

Реферат Выпускная квалификационная работа – 87 с., 2 рисунков, 16 таблиц, 113 источников литературы, 1 приложения, 4чертежа. Ключевые слова: режим энергосистемы, моделирование режимов, надежность энергосистем, нагрузка, допустимые параметры режима, пропускная способность электрических сетей, воздушная линия электропередачи. Объектом исследования является схема электрических сетей подстанции ОП-6. Целью работы является расчёт реконструкции подстанции и анализ нормальных и послеаварийных режимов электрических сетей ОП-6 энергосистемы с вводом их в допустимую область по напряжению, а также оценка пропускной способностью.Abstract Final qualifying work – 87 p., 2 figures, 16 tables, 113 references, 1 app, 4чертежа. Keywords: grid, simulation, reliability of power systems, load, valid mode parameters, throughput of electric networks, overhead line power. The object of the research is the scheme of electric networks of the substation OP-6. The aim of this work is the calculation of the reconstruction of the substation and the analysis of normal and post-accident modes of electrical networks of OP-6 power system with their input in the permissible range for voltage and rating capacity

Local feeding specialization by badgers (Meles meles) in a mediterranean environment

A case of local feeding specialization in the European badger (Meles meles), a carnivore species with morphological, physiological and behavioural traits pro­ per to a trophic generalist, is described. For the first time, we report a mammalian species, the European rab­ bit (Oryctolagus cuniculus), as the preferred prey of bad­ gers. Secondary prey are consumed according to their availability, compensating for temporal fluctuations in the abundance of rabbit kittens. We discuss how both predator (little ability to hunt) and prey (profitability and predictability) features, may favour the observed special­ ization, as predicted by foraging theory. Badgers show a trend to specialize on different prey in different areas throughout the species range. It is suggested that changes in prey features can reverse the badger feeding strategy at the population level. Such dynamic behavioural re­ sponses make difficult to label badgers as generalists or specialists at the species levelPeer reviewe