一种电力操作电源的建模与控制环路设计

结合电力操作电源的特性,建立了基于有限双极性控制的操作电源的小信号模型,并设计了控制电路。克服了开关电源轻载实现零电压零电流开关(Zero-VoltageZero-CurrentSwitching,ZVZCS)效果不好以及传统电压控制模式反应相对较慢的缺陷。该电路具有简单、可靠、稳定的特点。

用电子调压器调整操作控制电源

利用可控硅交流调压原理(即改变可控硅导通角的大小,从而改变输出电压的大小)来实现控制电源的电压调节。

10kV变电所设计中几个问题讨论

对10kV变电所设计中进线断路器继电保护的设置、过电压保护问题、变电所控制操作电源等问题进行了讨论.

Enhancing the Stability of SEIG Connected Distribution System Using Reactive Power Control Capabilities of DFIG under Varying Wind Speeds

The increased level of penetration of wind generators into modern power system has significant effect on network operation. The time varying nature of wind speed has significant effect on performance of wind generator, therefore efficient mechanism for stabilizing the output of the wind generator is very much needed. Self-excited induction generators （SEIG） already existing in the network are sensitive to wind speeds. In this paper, a new method for voltage control of SEIG utilizing reactive power enhancing capabilities of doubly-fed induction generator （DFIG） is simulated and its effect on the network is analyzed for varying wind speeds. The choice of placing DFIG adjacent to SEIG or at another bus is also addressed in this paper with simulation results. The results show that this method of utilizing the reactive power capabilities of DFIG enhances voltage stability of SEIG as well as system stability.