2×600MW火电厂电气主接线方案初步设计
摘要
电气主接线是发电厂、变电所电气设计的 主要部分，也是构成电力系统的重要环节。主接线的确定对电力系统整体及发电厂、变电所本身的运行的可靠性、灵活性和经济性密切相关。并且对电气设备的选择、配电装置的配备、继电器的保护和控制方向的拟定有较大的影响。发电厂的主接线是保证电网的安全可靠、经济运行的关键，是电气设备布置选择、自动化水平和二次回路设计的原则和基础。2×600MW 火电机组目前已经是我国电力系统中的主力机组，由 2×600MW 机组为主的火力发电厂也属于我国电力系统的大型主力发电厂。
本设计讨论的是 2×600MW 火电厂电气主接线方案与设备布置，火电厂电气一次部分设计是电力工程设计的主要工作之一，设计的合理与否对于提高电力系统运行的可靠性、经济性具有重要意义。它对发电厂内电气设备选择和布置，继电保护和自动装置的设计起到决定性作用。设计详细说明了各种设备选择的基本的要求和依据。在分析原始资料，确保供电可靠，调度灵活，满足各项技术要求的基础上，选择出一种与发电厂在系统中的地位和作用相适应的接线方式，接下来选择了主变压器，进行了短路计算，设备选择，设备校验，然后进行了设备布置方案的设计,绘制了主接线图、配电装置平面布置图、配电装置进（出）线断面图和配电装置配置图。本设计注意了新技术和新型设备的应用，把握了当代设计新趋势。
本文本课题的设计内容主要完成 2×600MW 机组火力发电厂的电气主接线方案拟定、设备选型和装置布置的初步设计，同时还应考虑今后扩建的可能性，并采用 CAD 绘制指定的图纸。通过对原始资料的分析，了解本厂的具体情况及其在系统申的地位，作用:依据可靠性、灵活性、经济性，对电气主接线进行分析，从而选择最适合本厂情况的主扫线方案，为选择最适合的电器设备及继电保护装置进行了短路电流保护的配置及整定，从面满足可靠、灵敏、快速且有选择的要求。 关键词：发电厂；电气主接线设计；短路计算；电气设备选择
2×600MW火电厂电气主接线方案与设备布置设计
THE DESIGN OF MAIN ELECTRICAL WIRING AND LAYOUTIN THERMAL POWER PLANT OF 2× 600MW
Electrical wiring is the main power plant, substation electrical design of main part, but also constitute an important part of power system. The main connection to determine the overall power system and power plants, substations operating reliability, flexibility and economy are closely related. And the choice of electrical equipment, power distribution equipment, relay protection equipment and control the direction of the development has a great influence. The main wiring of power plant is to ensure the safe and reliable network, the economic operation of the key, is the choice of electrical equipment layout, the level of automation and the two circuit design principle and basis. 2 * 600MW unit is the main units in the power system, the main power plant of large thermal power plant is composed of 2 * 600MW units also belong to the electric power system in china.
This design is about 2 * 600MW thermal power plant electric main wiring scheme and equipment layout, design a part of power plant electric is one of the main work of the electric power engineering design, the design is reasonable or not is very important for improving the reliability, the economical operation of the power system. The power plant electrical equipment selection and layout, the design of relay protection and automatic device plays a decisive role. Design details the various equipment selection of basic requirements and on the basis of. In the analysis of the original data, ensure reliable power supply, flexible scheduling, meet all kinds of technical requirements, select the connection mode and the role of a power plant in the status of the system to adapt, then select the main transformer, the short circuit current calculation, equipment selection,
ABSTRACT
equipment calibration, and then the design of equipment layout plan the main
wiring diagram, drawing, power distribution equipment, power distribution equipment layout into (out of) the line section and power distribution equipment configuration diagram. The design and application of new technology and new attention to the equipment, grasp the new trend of contemporary design.
The preliminary design design content of this text research mainly develop, main electrical connection scheme for 2 * 600MW units in thermal power plant equipment
2×600MW火电厂电气主接线方案与设备布置设计
selection and arrangement, also should consider the possibility of expansion in the future, and the use of CAD drawing the specified drawing. Through the analysis of the original data, to understand the specific situation of the factory and its role in the system: according to the status, application reliability, flexibility and economy, the main electrical wiring are analyzed, so as to select the main sweep line scheme is most suitable for the factory, the short circuit current protection configuration and setting for electrical equipment and the relay protection device to select the most suitable, reliable, sensitive, from the surface to meet the requirements of fast and selection. Key words: Thermal power plant ； The main electrical wiring ； short circuitcalculation；equipment selection