CURRENT TRENDS IN DESIGN OF ELECTRIC SUBSTATIONS

Abstract

The issue of using modern equipment in the construction and modernization of electrical substations is discussed in the article. 
 The current state of electrical substation equipment is analyzed. It is shown that more than half of the equipment has exhausted its technical resource. The percentage of refusals due to aging has increased significantly. 
 Modern trends in design and new concepts of construction and installation of electrical substations are described. The complete-block technology of construction of electrical substations is considered. 
 The experience of substation reconstruction in Europe is presented. ODD, MTS and GIS technologies are compared. 
 The main suppliers of equipment for electrical substations in Ukraine are characterized. 
 Variants of the use of electric and gas equipment are described.
 Concepts of closed modular construction and "hybrid modules" are given.
 Gradual changes to the traditional for the unified energy system of Ukraine scheme "two working bus systems with a bypass bus system" are presented, depending on the choice of switching devices.
 New schematic solutions for substations on desolderings are provided (the RP scheme of the TP supply voltage on desolderings with a jumper on separate equipment; a typical RP scheme of the TP supply voltage on desolderings on integrated power equipment, the RP scheme of the TP supply voltage on desolderings with a jumper on enlarged cells on an integral power equipment). The advantages and disadvantages of the presented schemes are analyzed. On the basis of a complex analysis, conclusions are made about the advantages and disadvantages of the presented schemes and the criteria for choosing one or another scheme and the corresponding equipment are presented.