摘要:本课题的主要研究内容即是根据所提供的工厂所能取得的电源及该工厂各个车间的负荷数量和性质等用电的实际情况，并适当考虑到工厂生产的发展，按照安全可靠、技术先进、经济合理的要求，完成本厂的全厂总降压变电所及配电系统的设计。依据变电所设计的一般原则、步骤和方法，使本设计达到工厂供电必须达到的安全、可靠、优质、和经济四个基本要求。同时，其线路的保护装置亦需能满足选择性、速动性、灵敏性和可靠性四个方面的要求。
关键词：负荷；降压变电所；配电系统；保护装置
ABSTRACT:The subject's main research contents shall be according to the factory can provide access to power and the various workshops of the factory load power such as the number and nature of the actual situation, and with due regard to the development of plant production, in accordance with the requirements of the safe, reliable, technologically advanced, economical and reasonable, complete our factory total step-down substation and distribution system design. Pursuant to general principles, procedures, and methods of design of substation, the design factory power supply must achieve secure, reliable, high quality, and the economy of the four basic requirements. At the same time, its line of speed protection devices should be able to meet the selectivity, mobility, flexibility and reliability of the four requirements.
Key words：load; transformer substation; distribution substation;relay equipment
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