毕业设计（文）-某机械厂变电所及配电系统设计（全套图纸）.doc

浙江工业大学浙西分校信电系毕业设计 PAGE 2浙江工业大学浙西分校——毕业设计课题：某中外合资机械厂变电所及配电系统设计设计人：学号：设计班级：指导老师：设计时间：摘要根据我国能源利用情况，供电设计的原则要求，按照设计任务书的详细要求，对该厂进行总体分析，然后着手对该中外合资机械厂的变电所及配电系统进行设计。在指导老师的悉心指导下、在同组成员尽心帮助下，同时借助不少参考文献，完成该次设计。全套图纸加153893706首先，对全厂的负荷进行系统计算，为确定供电系统的电力变压器、各种开关电器的容量、电力线路的截面和变电所的所址等提供依据。并且对其进行无功补偿，以减少变压器、电力线路、开关设备的功率损耗，从而减少电器元件的规格，降低它的功率损耗和电压损耗，减少投资。内容主要在第一章中体现。其次，根据本厂的实际情况和经济技术比较电力变压器，确定变电所的所址、类型以及其主接线方案，其中包括变压器容量以及台数的确定，全厂配电系统的设计。内容包括第二、三、五、六章。然后，按符合情况系统地对厂区进行设计，为了校验一次设备的短路稳定度，开关电器的断流能力及电流保护装置的灵敏度，整定电流速断保护装置的动作电流，进行短路电流的计算，进而选择了电力线路和高低压电气设备。内容包括第四、七章。最后，确定全厂配电系统的防雷接地系统设计。内容于第八章作比较详细的介绍。关键词：电力变压器、无功补偿、功率损耗、短路稳定度、断流能力、灵敏度、动作电流、配电系统AbstractAccording to our country energy use situation, the power supply design principle request, according to the design project description detailed request, carries on the overall analysis to this factory, then begins to this chinese-foreign joint venture machine shop transformer substation and the electrical power distribution system carries on the design. In instructs under teachers devotedly instruction, in with the component member with all ones heart help under, simultaneously draws support from many reference, completes this design.First, carries on the system computation to entire factory load, for the determination power supply system power transformer, each kind of switch electric appliance capacity, the power circuit section and the transformer substation institute site and so on provides the basis. And carries on the idle work to it to compensate, reduces the transformer, the power circuit, the switching gear power loss, thus the reduced electric appliance part specification, reduces its power loss and the voltage loses, reduces the investment. The content mainly manifests in the first chapter.Next, according to this factory actual situation and economical technical comparison power transformer, definite transformer substation institute site, type by and its main wiring plan, including transformer capacity as well as number determination, ent