2×300MW火电厂电气一次部分设计 电力学专业

摘 要在我国电能行业的大发展大繁荣的基础下，发电、变电、输电、配电等环节组成的整个电力系统已经成为我国的支柱产业，特别是发电行业更是重中之重。作为一种将天然的一次能源通过动力发电装置直接有效地转换为清洁、传递速度快的二次能源（电能）的行业，其重要性可想而知。以 2 台 300MW 的发电机组为核心的火力发电厂电气部分一次设计是我本次重点研究的问题。在火电厂中电气主接线设计中，可靠性，经济性和安全性对线路方案选择和主接线上设备选择都有不可替代的影响。本文将从电气主接线方案选取开始，对以主变压器和发电机组为基础的发电厂电气设备做出选择。其次，短路电流的计算作为本设计重点，为设备选型提供了重要理论依据。通过本文设计的火力发电厂电气部分一次设计，不但能为我国高用电企业的飞速发展提供有效保障，更为整体经济发展做出了坚实的厚盾。 关键词：发电厂 电气主接线 短路计算 设备选型IAbstractBased on the development of Chinese power industry ,Power generation, transmission and distribution, the composition of the entire power system has become a pillar industry in nowadays China .The power industry is the priority among priorities，especially .As a kind of industry using generating devices transforming primary energy into secondary energy(electricity) effectively ,it is obviously important.The electrical part of power plant design with 2×300MW generating units as the core is my key research. In the thermal power plant’s main electrical wiring design, reliability ,economy and safety of selection in route have irreplaceable effect.This paper will start from the electrical main wiring scheme selection and make choices about electrical equipment for power plant which based on Main transformer and generator set. Secondly, the calculation of short-circuit current as the focus provides an important theoretical basis for the selection of equipment.The thermal power plant electrical design of the first part of this paper design, not only providi...