Abstract
The article considers the issues of computer-aided design system for circuits of open switchgear using the original software product "ORU CAD". This software makes it possible to develop a single-line circuit of the switchgear on the basis of initial data for design (voltage, number of connections, type of substation and load value) in the “KOMPAS” environment, to make a specification of the equipment using the database. When developing the software product, the developers focus on the current rules and regulations for the design of open switchgear. The description of construction of the database of the main equipment of open switchgear 35-220 kV is adapted to the design of schemes of switchgears and technical and economic comparison of their possible options. The database contains the main technical parameters, reliability indicators (failure flow parameter, recovery time) as well as prices for power transformers, switches, current and voltage transformers, surge arresters, disconnectors and lines. A graphical display designed in "KOMPAS" is stored for the future construction plans of distribution devices in the database for each object. To provide the unification of the database, displaying items on the plans is made in the same scale with the application of dimensions. For the implementation of the technical and economic comparison of design options the prices of the equipment described in the consolidated cost performance relative to 2002, the Database is designed so that the user can introduce additional equipment and adjust price indices of existing equipment. The software package is developed for electrotechnical departments of the design organizations for the purpose of acceleration of process of work of the engineer-designer.
Keywords
Power engineering, computer-aided design system, open switchgear, substation, database, electrical equipment, transformer, switching equipment.
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