核工业脉冲发电机组工艺简介及要求
脉冲发电机是一种惯性储能技术，惯性储能是依靠物体运动来存储能量的方式，存储在高速旋转的飞轮或机械中的能量为旋转机械能。一般使用较小功率的拖动机构，以相对长的时间把一定质量的转子或飞轮慢慢地加速使其转动起来从而存储足够的动能，根据需要利用其转动惯性脉冲地驱动负载设备，把机械能转变为电磁能。
300MVA脉冲发电机组由8500kW绕线异步电动机及300MVA脉冲发电机组成为一同轴系联轴器连接，机组飞轮力矩为7300t.m2。 8500kW电动机作为机组的拖动电机，基本参数为6000V、991A，转子开路电压2498V、转子额定电流2062A。
图1 脉冲发电机
风水冷高压变频器技术总体方案
根据电机参数，选用HIVERT-Y6/1200（6kV/10000kW）高压变频装置，额定输出电流为1200A，适配电机功率为10000kW。由手车断路器式自动旁路柜、启动柜、主变压器柜、功率单元柜、控制柜、水循环系统、接线柜等几部分组成。该项目结合脉冲发电机组的工况特性，融入了全数字矢量控制、IGBT并联设计、叠层母排技术、单元制动功能、水冷散热方式等多项高端技术。
1.变频装置主电路图
1.1 一次回路及保护
HIVERT系列高压水冷变频器采用交-直-交直接高压（高-高）方式，主电路开关元件为IGBT，功率单元采用串联，叠波升压，充分利用高压变频器的成熟技术，具有很高的可靠性。
隔离变压器为三相干式整流变压器，风水冷。变压器原边输入可为任意电压，Y接；副边绕组数量依变频器电压等级及结构而定，6kV系列为18个，延边三角形接法，为每个功率单元提供三相电源输入。为了最大限度抑制输入侧谐波含量，同一相的副边绕组通过延边三角形接法移相，绕组间的相位差由下式计算：
移相角度 = 60°/ 每相单元数量
由于为功率单元提供电源的变压器副边绕组间有一定的相位差，从而消除了大部分由单个功率单元所引起的谐波电流，所以HIVERT变频器输入电流的总谐波含量（THD）远小于国家标准5%的要求，并且能保持接近1的输入功率因数。三相输出Y接，得到驱动电机所需的可变频三相高压电源。which is very convenient and fast for data processing In this project, there are a lot of data to be read and written, and array processing is adopted, which is very good
4 process treatment package
S7-1200 has customized PID and motion control instruction package, which makes it easier for engineers to complete process and positioning control.
5 custom software components
In the past, the definition of soft components by PLC was determined before leaving the factory. For example, the number of counters and timers can not be changed. Often, the number of applied soft components is different in different applications. Sometimes the timer runs out and a large number of counters remain. S7-1200 has many advantages in this point. Soft components can be defined by itself. If you want to use a few, you can define a few, which is much more flexible and convenient.
In addition, I believe that there are many new features in s7-1200 applications to be developed and experienced.
4. Product hardware configurationThis part mainly makes a detailed description of the product hardware design around SIMATIC s7-1200 in the whole projec
