Styskal V. Control of the technical state of protective facilities from electric-field influence in 220-750 kV electrical installations

A research object is influence of electric-field of 220-750 kV electrical installations during service and implementation of repair works on potential of wire; a research aim is an increase of level of reliability, safety and efficiency of exploitation of 220-750 kV electrical installations by control of the technical state and perfection of facilities of protecting from influence of the electric fields; methods of mathematical and imitating modelling, methods of an electromagnetic field theory, methods system- and circuitry are used. Theoretical results - the method of continuous control of the technical state screening complete set of clothes (SCSC) is offered during implementation of works under tension, that consists in measuring of amount of electric power that is taken in by the body of working operator, taking into account the actual parameters of body and his working position and further determination of accordance of the measured values to the set norms. It allows to determine possible time of stay of operator in the electric field depending on the parameters of the field and SCSC technical state; the method of calculation of isolating intervals of supports of different types is improved by the account of influence on them of constructions of supports and their external environments, that allows to promote safety and efficiency of implementation of repair works; the mathematical models of evaluation of SCSC screening efficiency are improved by the account of parameters of geometrical form, that the body of operator during implementation of works under tension, screening effect of portals of substations and supports of air-tracks acquires by tension of 220-750 kV by the account of influence of them the real constructions, that provided the choice of SCSC optimal parameters, allowed to promote exactness of calculations of the electric fields of facilities of defence, inclusive and in the break of the prolonged rope cover, to promote efficiency of maintenance of open distributive devices. Practical results - the experimental standard of device of continuous control of the SCSC technical state is worked out in the process of exploitation, and also methodology of calculation of tension of electric-field is offered in the zone of maintenance of 220-750 kV electrical equipment. It gives an opportunity to promote the level of efficiency and safety of exploitation of extra-high voltage electrical installations. Degree of introduction - job performances are inculcated in the Southwestern Electric Power System of the State Enterprise "NPC "Ukrenergo" and educational process of the Vinnytsya national technical university. A sphere (industry) of the use is an electroenergy.