110kv变电站电气一次部分设计毕业论文

摘要

本设计是针对“ZYA市新建110KV变电站”一次设计的要求，对电力系统及变电所的具体情况进行了分析与说明，对主变压器和主接线进行了设计与选择，并进行了短路电流的计算，根据所求的结果和已知的数据确定了母线、母线引下线、断路器、隔离开关、绝缘子、避雷器等必需的电气设备,且对变电所进行了防雷设计。

根据变电所给定的负荷,我们不难对主变进行选择，并用一级和二级负荷对其容量的选择进行校验，根据远景与近景负荷的比较确定一期工程主变的台数.电气主接线的设计是变电站电气设

计的主体，在设计中应以任务书为依据，以国家经济建设的方针、政策、技术规定、标准为保证供电可靠、调度灵准绳,结合工程实际情况在活、满足各项技术要求的前提下兼顾运行、维护方便,

尽可能的节省投资。导体和电气设备的选择是电气设计的主要内容之一，电力系统中各种电气设备的作用和工作条件不一样,具体选择的方法也不完全相同，但对它们都有一致的要求，电气设备要能可靠的工作，必须按正常工作条件进行选择，并按短路状态来校验热稳定和动稳定。配电装置是根据电气主接线的连接方式，由开关电器、保护和测量电器，母线和必要的辅助设备组建而成的总体装置.以本设计来看110KV宜采用室外形式，35KV和

10KV宜采用室内形式。为了预防和限制雷电的危害性，变电站中还应采用防雷措施和防雷保护装置.

关键词：断路器隔离开关配电装置避雷器

Abstract

This design aims at the request which "WH the city newly built 110KV transformer substation” time designs, has carried on the analysis and the explanation to the electrical power system and the transformer substation special details, has carried on the design and the choice to the main transformer and the host wiring，and has carried on the short-circuit current computation，according to result and known data determination generator, generator download，circuit breaker，isolator, insulator, and so on which asks essential electrical equipment，also has carried on the anti-radar design to the transformer substation。

According to the given load substation, we not difficultly change to the host carry on the choice, and carries on the verification with level of and two level of loads to its capacity choice, changes the Taiwan number according to the prospect and the close view load quite definite issue of project host. The electrical host wiring design is the transformer substation electricity design main body，in the design should take the project description as the basis, take the national economic construction policy, the policy，the technical stipulation，the standard as the criterion，the union project actual situation in the guarantee power supply reliable, the dispatcher nimble，satisfies each specification under the premise to give dual attention to the movement, the maintenance is convenient，as far as possible saves the investment。The conductor and the electrical equipment choice is one of electrical design main contents, in the electrical power system each kind of electrical equipment function and the working condition are dissimilar, concrete choice method quite same not less than，but all has the unanimous request to them，the electrical equipment must be able the reliable work，must carry on the choice according to the regular service condition, and according to short-circuits the condition to verify the thermally stable and to move stably. The power distribution equipment is according to the electrical host wiring connection way, by the switch electric appliance, the protection and the survey electric appliance，the generator and the essential supporting facility sets up the overall installment which but becomes. By this design looked 110KV