某郊区110kv变电站一次初步设计说明书（论文）+CAD图纸-毕业作品网站

摘要：变电站是电力系统中变换电压、接受和分配电能、控制电力能源的流向和调整电压的电力设施，它通过其变压器将各级电压的电网联系起来。直接影响整个电力系统的安全与经济运行。变电所电器主接线是电力系统接线组成的一个重要部分，而且电气主接线的选择直接关系到全站各种电气设备的选择，配电装置的布置等方面，是变电站电气部分投资大小的决定性因素。本次设计为某郊区110kv变电站一次初步设计，从主接线、短路电流计算、主要电气设备的选择等几个方面对变电站设计进行了阐述，并绘制了电气主接线图和布置图。设有两台主变压器，站内主接线分为110kV、35kV和10kV 三个电压等级。设计进行了电气主接线的设计和选择、短路电流计算、主要电气设备选择及校验（包括断路器、隔离开关、互感器、避雷器等）、各电压等级配电装置设计、防雷保护接地系统设计和变电站总体布置。本设计内容符合国家有关经济技术政策，所选设备全部为国家推荐的新型产品，技术先进、运行可靠、经济合理。

Abstract：A substation is a power facility in a power system that converts voltage, receives and distributes electric energy, controls the flow direction of power energy and adjusts voltage. It connects the grid of voltage at all levels through its transformer. directly affect the safety and economic operation of the whole power system. The electrical main wiring of substation is an important part of power system wiring, and the selection of electrical main wiring is directly related to the selection of all kinds of electrical equipment in the whole station, the arrangement of distribution equipment and so on, which is the decisive factor of the investment size of the electrical part of substation. Design for a suburban 110 kv substation a preliminary design, from the main wiring, short-circuit current calculation, the main The selection of electrical equipment and other aspects of substation design are described, and the electrical main wiring diagram and layout diagram are drawn. There are two main transformers, the main wiring in the station is divided into 110 kV、35kV and 10 kV three voltage levels. The design and selection of the main electrical wiring, the calculation of short circuit current, the selection and verification of the main electrical equipment (including circuit breakers, isolating switches, transformers, arresters, etc.), the design of distribution devices for each voltage grade, the design of grounding system for lightning protection and the overall layout of substations are carried out. The content of this design conforms to the relevant national economic and technological policies, and all the equipment selected is a new type of production recommended by the state products, advanced technology, reliable operation and reasonable economy.