生活垃圾焚烧发电项目电气设备介绍..doc

生活垃圾焚烧发电项目 电气设备介绍 Introduction of electrical equipments of MSW power plant 1.1 主要电气设备 Main electrical equipments 为了满足用电设备对电力的要求和保证电力系统运行的安全稳定和经济性，发电厂电气部分的主要工作是启、停机组，调整负荷，切换设备和线路，不断监视主要设备的运行，发生异常和故障时及时处理等。以上所有的工作都是靠操作主要电气设备来完成的。本厂主要电气设备如下： In order to satisfy the equipment’s requirement to power and the safety and stability running of the electric energy system and the economic benefit, the priority mission of the electrical system is, start and stop the unit, adjust the load, switch between equipment and line, constant survey major equipment, quickly react to failure or unusual situation, etc. The above missions are completed by operation of major electrical equipment. The main electrical equipment in this plant as follow: 汽轮发电机 发电机是根据电磁感应原理而工作的一种旋转电气设备，它将机械能转变成电能。它与汽轮机直接耦合传动。发电机旋转方向从汽轮机端看为顺时针方向。 Generator is one kind of rotate electrical equipment which follows the rule of electromagnetic induction, transferring mechanic energy into electric energy. t directly couples to the turbine and rotates. The direction of generator rotating is clockwise seen from the turbine end. 型号 power factor model QFW-7-2 6600V 额定功率 rated power 7000 kW 功率因数 power factor（COSφ） 0.8 额定定子电压 rated stator voltage 6600V 额定定子电流rated stator current 765A 额定转速 rated rotation speed 3000 r/min 极数 number of polar 2 相数 number of phase 3 定子接法 stator connection type Y 1.1.2 柴油发电机 柴油发电机平时处于备用状态，当发生全厂停电事故时，自动控制系统会自动隔离厂用电母线和事故保安段母线，同时发出信号命令柴油发电机启动，柴油发电机自带控制系统，可以在10-15s内自动完成柴油启动、调速、升压、合闸一系列的过程，供电给事故保安段母线，维持基本的设备运转，保障锅炉和汽机及其他辅助设备的安全停机。 It is usually in backup status. When the plant is under emergency shutdown, the auto control system will isolate the plant supply busbar and the security section, at the same time sends out signal to command the diesel generator to start, adjust speed, boost up pressure, shut valve and series of action, and supply power to security section, keep basic equipment running in10 to15 second, guaranteeing the safety shutdown of boiler and turbine and o