毕业设计(论文）10000kW水电厂电气部分设计.doc

10000kW水电厂电气部分初步设计 摘 要：我国的水能资源居世界第一，通过水电厂将水能转化为电能，必将为国民经济的发展提供强大动力，因此水电厂电气部分的设计工作显得非常重要。通过对10000kW水电厂原始资料的分析，在设计中力争理论与实际工程相结合，结合实际情况设计出扩大单元的电气主接线系统；利用水轮发电机短路电流运算曲线计算短路电流；依据电气设备手册选定变压器、母线、断路器、隔离开关等电气设备；根据设计手册设计户外配电装置，绘制出相应的电气断面图和平面图；对发电机、变压器、线路等设备做了继电保护配置和整定计算；最后对全厂防雷保护和接地进行设计。 关键词：电气主接线 短路电流 电气设备 配电装置 继电保护 The Preliminary Design of Electrical Part of 10000kW Hydropower Plants ZHANG Xiao-dong CHEN Rui LI Qiang WANG Bin DUAN Yong-fu Tutor: CHU Xiao-rui (Electrical Engineering and Automation Major of 2005’s) Abstract: Chinas hydropower resource is top of the world. Through the hydropower plant which converts water power into electricity, it will provide a strong driving force for the national economy, so the electrical part of the hydropower plants design is quite important. On the analysis of the raw data of 10000kW hydropower plant, striving to combine the theory and engineering practice is done in the design and according to the actual situation we plan out the expansion unit of the main electrical wiring systems. The short-circuit current is calculated by operational curve law. Transformers, bus-bar, circuit breakers, isolating switches and other electrical equipments are also selected by using electrical manual. In accordance with design manual, the outdoor power equipment and the corresponding cross-section and plane maps as well as the relay Protection of configuration and setting for generators, transformers, lines and other equipments are finished. Finally, the whole plant lightning protection and grounding design are determined. Key Words: Electrical Wiring Short-circuit Current Electrical Equipment Distribution Devices Relay Protection 0 前 言 在21世纪中叶基本实现社会主义现代化建设的战略目标，要实现社会主义现代化，就要逐步用当代先进的科学技术来武装我国的农业、工业、国防和科学技术事业，使之达到国际先进水平。工业要现代化，作为基础和先行工业的电力行业更要实现现在化，要实现电力工业现代化，就应使电能满足“四化”建设的需要、满足工农业生产和人民生活用电不断增长的需要。随着我国经济的不断发展，对能源的需求量也越来越大，然而能源的不足与需求之间的矛盾在近几年不断恶化，国家急需电力事业的发展，为我国经济的发展提