2×660MW燃煤电厂电气部分设计要点.docVIP

2×660MW燃煤电厂电气部分设计 专业：电气工程及其自动化 摘 要 发电厂是电力系统的重要组成部分, 也直接影响整个电力系统的安全与运行在发电厂中一次接线和二次接线都是其电气部分的重要组成部分本文为MW燃煤电厂电气部分设计，通过对拟建火力发电厂的概括以及出线方向来考虑，并通过对负荷资料的分析，安全经济及可靠性方面考虑，确定220kV以及厂用电的主接线，然后通过负荷计算及供电范围确定了主变压器台数容量及型号，同时也确定了厂用变压器的容量及型号最后，根据最大持续工作电流及短路计算的结果，对高压器隔离开关母线绝缘子穿墙套管电压互感器电流互感器进行了选型，从而完成了0MW燃煤电厂电气部分设计。电气主接线短路电流设备2 × 660MW coal-fired electric power plant part of the design Major：Electrical Engineering and Automation Abstract：Power is an important part of the power system, but also directly affect the safety and operation of the entire power system. In power plants, the primary wiring and secondary wiring are important components of the electrical parts. This article is planning a project 4 × 660MW coal-fired power plant 2 × 660MW coal-fired electrical power plant part of the design, by the generalization of the proposed power plant as well as outgoing direction to consider, and through the load data analysis, from the security, economy and reliability considerations, as well as determine the 220kV electricity main connection factory, and then determine the number of main transformer station, capacity and type and scope of supply by the load calculation, but also determine the auxiliary transformer capacity and model. Finally, according to the results of the maximum continuous operating current and short circuit calculations, high-voltage circuit breakers, disconnectors, bus, insulators, wall bushing, voltage transformers, current transformers were selection, thus completing the 2 × 660MW coal-fired electrical part of the plant design. Key word：Main electrical wiring Short circuit current Equipment 目 录 1.前言……………………………………………………………………………… 1 1.1电力系统概述…………………………………………………………… 1 1.2电力行业的发展概况…………………………………………………… 1 1.3电力行业发展方针……………………………………………………… 1 2.电气主接线…………………………………………………………………………………………………………………………………… 2 2.2原始资料的分析………………………………………………………… 6 2.3拟定可行的主接线方案………………………………………………… 6 2.4厂用电的设计…………………………………………………………… 8 3. 短路电流的计算…………………………………………………………………短路