The article is devoted to the features of the system grounding and device of electrical networks (EN) and electrical installations (EI) in the continental zone of the Arctic. The traditional grounding devices providing grounding of EN and EI in the Arctic regions are ineffective or their device is impossible. These conclusions are defined by parameters of climate and properties of soil in the considered zone. The most important parameters of climate are a wide year temperature difference and big depths of soil frost penetration caused by it. Soil has very high electrical resistance and has the big hardness and density. During the cold period which has big duration (up to nine and more months) there is a soil frost penetration on tens of meters, forming areas of so-called permafrost. The conditions listed above make very difficult or impossible the use of traditional ways of the protective grounding device according to regulatory requirements. Methods of researches for the Arctic zone soil such as a method of a trial electrode and vertical electric sounding are described. Their advantages, shortcomings and application conditions are given. Special ways of the device of protective grounding such as natural grounding conductors, chemical, deep laying, portable, with application of a way of warming of a surface and zone around grounding conductors, ways of special processing of soil are offered. Conditions of their application and feature of the device are given. Each of the offered ways has restrictions of field of use. So, for example, natural grounding conductors are possible in the presence of reinforced concrete foundations. Justifications for using certain materials for grounding conductors are given in the work. Coverings are suitable for soil conditions of the Arctic copper or zinc. The usage of copperplated steel grounding conductors is possible.
One of the fundamental principles of sustainable development is sustainable electric power supply to consumers. The implementation of this principle is possible only with guaranteed safety of electric power networks. Forecasting of possible threats is one of the tools to reduce the fault rate of technological equipment. Emergency shutdowns are largely caused by meteorological factors. The instability of meteorological conditions can lead to significant negative consequences for human life and activities. For forecasting and diagnosing meteorological conditions, it is advisable to use a territorial geo information system (GIS). Safety management processes requires the process creation with predefined properties. For safety management, it is recommended to use synthesisbased models, which makes it possible to apply an approach based on solving the inverse management problem. As a result of the study, the safety management technology of electric power networks based on the use of GIS was developed. The research considers threats caused by the impact of meteorological factors. In particular, some problems arising under the influence on the control object of environmental temperature, wind, and thunderstorm were analyzed. The presented simulation of safety management processes allows to guarantee reliable and safe electric power supply to consumers.
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