某塑料制品厂总配变电所及配电系统设计论文.doc

摘 要 某塑料制品厂全厂总配变电所及配电系统设计是对工厂供电的设计。本设计对工厂供电方式、主要设备的选择、保护装置的配置及防雷接地系统进行了相应的叙述，其中还包括全厂的负荷计算、高压侧和低压侧的短路计算、设备选择及校验、主要设备继电保护设计、配电装置设计、防雷和接地设计等。本设计通过计算出的有功、无功和视在功率选择变压器的大小和相应主要设备的主要参数，再根据用户对电压的要求，计算补偿功率，从而得出所需补偿电容的大小与个数。 根据国家供电部门的相关规定，画出总配变电所及配电系统的主接线图。电气主接线对电气设备的选择，配电所的布置，运行的安全性、可靠性和灵活性，对电力工程建设和运行的经济节约等，都有很大的影响。 关键词：变电所，负荷计算，设备选型，继电保护 ABSTRACT The whole plant distribution substation and power distribution system design of a plastic products factory is for power plant design. The design makes the narrative about the factory power supply, main equipment selection, protection device configuration and grounding system for lightning protection, which also includes the load calculation of the factory, the short circuit current calculation of the high pressure side and low pressure side, equipment selection and validation, the main equipment relay protection design, power distribution equipment design, lightning protection and grounding design. This design is based on the calculation of the active power, reactive power and apparent power transformer and the size of the corresponding main equipment main parameter, then works out the compensation computing power according to user requirements to voltage .Thus it can obtain the desirable size and number of compensation capacitor. According to the relevant provisions of the national electricity sector, the design draws the main connection diagram about the total distribution substation and power distribution system. Main electrical connection have great influence on the electrical equipment selection, the layout of the distribution, operation safety, reliability and flexibility, also power engineering construction and economy of the operation and so on. Keywords: substations, load calculation, equipment selection, relay protection 目 录 TOC \o 1-7 \h \u HYPERLINK \l _Toc9523 第1章 绪论 PAGEREF _Toc9523 - 1 - HYPERLINK \l _Toc27938 1.1 工厂供电的意义 PAGEREF _Toc27938 - 1 - HYPERLINK \l _Toc17914 1.2 工厂供电的要求 PAGEREF _Toc17914 - 1 -