某机械厂10KV降压变电所电气设计(3)

Abstract

Power of modern industrial production of major energy and power. With the development of modern civilization and progress of social production and life of the power supply, quality and management of the increasingly high demand. Factory power supply system is the core part

of the substation. Therefore, the design and construction of a safe and economical substation, it is extremely important. The power plant design include: the calculation of load and reactive power compensation; substation main transformer station number and capacity, determine the types; Substation Main Wiring choice; into the outlet of choice; short-circuit calculations and switching equipment choice; secondary circuit and relay protection scheme for the selection and tuning; lightning protection and grounding design; workshop wiring scheme for the distribution line; Lines and distribution equipment and the choice of protective equipment; and electrical lighting design, and schematic drawing.

Substation is on the electricity power system voltage and current to change, focus and

allocation of places is essential for power system power transmission link, play bridge. 10kV substation is an important part of the power distribution is the key link in grid construction. . With the development of national economy, industrial and agricultural production growth requires an urgent increase in demand for power supply capacity, the proposed new 10kV substation. Substation is an important part of power system, which directly affect the power system security and economic operation of power plants and customers are links in the middle part, play a role in transformation and distribution of electric energy.

前言

本毕业设计说明书是按辽宁石化职业技术学院自动化系2010年毕业设计要求，经小组共同研究，老师精心指导下，由个人独立编写的。

本书属小型水电站电气设计课题，题目要求先拟定一个合理的电气主接线方案，再进行短路电流的计算，高压电气设备的选择和校验，最后再画出电气主接线图。虽然此题有一定的难度和挑战性，但在小组成员的共同努力下，查阅大量相关资料，在加上老师的指导，使我们明确自己的方向。

在设计的过程中，我们首先熟悉了水电站的一些原始资料，再根据原始资料确定了一个合理的方案，在短路电流的计算过程中，我们找到了合理的短路点，避免过多的重复工作量。本设计以通俗易懂的文字，加上图形表达，系统地阐述了水电站所有的信息。本设计令读者便于理解和接受，本书极具有重要的参考价值。

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