The break was assumed to be a single tube double - ended and three - tube double - ended shear break . the diameter of the break orifice is 0 . 876mm and 1 . 518mm respectively . the characteristic responses of main thermal - hydraulic parameters , such as primary pressure , secondary pressure , break flow rate , pressurizer level , secondary side level of steam generator and so on , were presented in this thesis 试验再现了核电厂蒸汽发生器单根传热管双端断裂事故和三根传热管双端断裂事故发生后的热工水力现象，给出了事故过程中一次系统压力、二次系统压力、破口流量、蒸汽发生器二次侧水位、稳压器水位、元件表面温度等主要参数的瞬态响应。
This digital amplifier made up of a digital inverter can implement the sine voltage signal ' s power amplifying based on the digital signal processor . with the high processing ability of dsp , the advanced digital control arithmetic can be realized in the software . also the feasible and effective technique for the time delay compensation of digital control can be achieved 该放大系统用数字化逆变器来实现电力系统正弦电压信号功率的放大，利用dsp数字处理器高速的处理能力，可以使系统实现高性能的算法控制，并且能灵活地对系统的误差进行补偿，从而实现逆变系统的高性能和高精度，为解决电力系统电容式互感器二次侧带负载能力弱的问题进行了有意义的研究。
With the development of power system , on one hand , the capacity of the power system is increasing very rapidly and the system current becomes larger and larger , so it becomes very difficult for a traditional current transformer ( ct ) to undertake the measurement task . on the other hand , with the optimization of the administration and allocation of the power energy , it is very urgent to develop a new type of ct to meet such requirement 随着我国电力系统的不断发展，一方面，电力系统的容量在不断加大，系统电流值不断增加，一次侧电流值的测量对传统的电流互感器越来越困难；另一方面，随着运行管理和调度向着快速，可靠，自动化方向发展，要求对电力系统的运行进行在线监测和实时控制，对作为一二次侧联络设备的电流互感器提出了更高的要求，要求设计出一种新型的适应电力系统发展需要的电流互感器。
The thesis analyse the dynamic characteristic of heat - exchange equipment from the regulation channels and interference channels by the way of system simulation , and confirm the law of dynamic response of the second average temperaure when the first flow ( or temperature ) or the second flow change , and finish the design of heat power station ' s energy regulation system hereby it . at last , it simulate heat - exchang equipment and heat power station ' s energy regulation system by using matlab / simulink 本文用系统辨识的方法分别从调节通道、干扰通道对换热器动态特性进行了分析，确定了当一次侧流量(或温度)或二次侧流量变化时，换热器二次侧供回水平均温度的动态响应规律，并据此建立了换热器数学模型组成了热力站能量控制系统。最后用maflab / simulink对换热器和热力站能量控制系统进行了动态仿真。
This article has discussed the control problem in a distribution substation and on the distribution line respectively . reactive power / voltage control in a substation using general approach usually results in the voltage of the second side being too close to the boundary . it will make the ability of enduring the variation of load in a system decrease a lot and become the threat of the system 本文分别对配电系统中的变电站及配电线路的无功电压优化控制问题进行了研究，采用常规方法进行变电站电压无功控制时，往往使二次侧电压过于接近边界而导致系统承受负荷波动的能力大大下降，成为系统安全运行的隐患。
