关键词:电气主接线 短路电流 母线与电气设备选择与校验
Abstract
The design of 110 kV substations for the preliminary design, it is this knowledge by the professional conduct a comprehensive use of the process. Theoretically, it involves many aspects of the power system curriculum content. Specific design, its main elements:
Through the design of raw data main transformer substation choose this model, according to voltage levels, into the Chuxian a few, load the design of the electrical substation main connection, the election of two main electric cable programmes, economic and technical comparison, to identify a better programme According to the main draw equivalent circuit wiring, a reasonable choice of short-circuit, the equivalent circuit network simplification, the three-phase short-circuit short-circuit current situation calculated based on normal working condition select the bus and electrical equipment, and in three With short-circuit cases, according to short-circuit state on selected bus and electrical equipment calibration, the design selected electrical equipment including: circuit breakers, switches isolation, bus, insulators, current transformers, high voltage transformer, fuses and lightning arrester; And then to the substation to reasonable protection Planning and Design, 110 kV high-voltage power distribution equipment design and lightning protection planning and design. This design is the focus on short-circuit current calculations, as well as the choice of electrical equipment and calibration.
Keywords: Electrical host wiring short-circuit current generatrix and electrical equipment choice and verification