Bezprozvannich G. The Monitoring of Multicore NPP's Cables Aging: The Theoretical Bases and Methods of Insulation Scanning by the Electrical Field

Object of research - processes of ageing of isolation and protective environments of multicore cables of the nuclear power plants (NPP) under action of the increased temperatures, an electric field, radiations, humidity. The purpose of work - development and a substantiation of methods of monitoring of ageing of multicore cables of the NPP by sounding their isolation by a scanning electric field. Methods of researches - the theoriy of electric field , the theoriy of the electric discharges in air inclusions, the theory of polarization and dissipation of electric energy. Results of researches - methods of monitoring of ageing of multicore cables of the NPP at sounding isolation by a scanning electric field. Novelty - the method of monitoring of ageing of isolation is developed by localization of a probing electric field of a range of sound frequencies in different areas of cross-section . The method of allocation of parameters isolation intervals by results of cumulative measurements is developed. The method of an estimation of digit characteristics and is offered to the saved up energy of multicore cables. The method of a restored voltage is advanced. The method of revealing of the oxidized surface of isolation is offered at supervision for thermo-tribo-electrical potential. A degree of introduction - in state budgetary research at inspection of multicore cables of power units of the NPP, at creation of techniques and working programs on inspection of a technical condition of cables of the NPP, in educational process NTU "KhPI". Sphere of application - power units of nuclear and thermal statioons, local and regional electric systems, the high electropower equipment.