煤矿变电所设计.docx

煤矿变电所设计 煤矿变电所设计 本设计根据平煤某矿的电力负荷资料，做出了该矿的35KV总降压变电所的整体设计，包括负荷计算及无功补偿、系统主接线方案的选择、高压电气设备的选择、短路电流的计算及对所选的高压电气设备的校验、继电保护的设计、防雷及接地的设计等。本设计以实际负荷为依据，以变电所最佳运行方式为基础，按照有关规定和规范，做出了满足该矿生产需求的设计。 设计中先对负荷进行了统计与计算，选出了所需的主变压器型号，然后根据负荷性质及对供电可靠性要求拟定主接线设计，考虑到短路对系统的严重影响，设计中进行了短路电流计算。设计中还对主要高压电气设备做出了选择与计算，如断路器、隔离开关、电压互感器、电流互感器等。此外还进行了继电保护以及防雷保护的设计和计算，提高了整个变电所的安全性。 关键词：35KV变电所 负荷计算 主接线设计 短路电流计算 电气设备选择 继电保护 Abstract This design according to the PingMei mine power load material, make the attained general voltage 35KV substation design specification of the overall design, including load calculation and reactive compensation, system of main wiring schemes choose, high voltage electrical equipment choice, the calculation of short-circuit current and of selected high voltage electrical equipment calibration, relay protection design, lightning protection and grounding design, etc. This design to the actual load as the basis, the best operation way in substation based in accordance with the relevant regulations and standard, make a meet, the design of mine production requirements. Design the first to load, to select the statistical and computational got the main transformer models, and then based on the load properties and worked on the power supply reliability requirements, considering the Lord wiring design the serious influence of system short circuit, design the short circuit calculation. Design of high pressure of the main electrical equipment selection and calculation, such as breaker, isolating switch, voltage transformer, current transformer, etc. In addition also carried out the relay protection and lightning protection design and calculation, improve the security of the whole substation. Key words: 35KV substation Load calculation Lord wiring design Short-circuit current calculation Electrical equipment selection Relay protection 前 言 ........................................................ 1 1 概述 .....................................................