电力系统失步运行时电流及其频率变化规律的分析

电力系统失步运行时电气量变化规律的研究是开发新型安全保护技术、自动装置和切断电器以及正确判断与处理系统失步的基础,是当前研究者特别感兴趣的课题之一.文讨论了失步运行时电压及其频率的变化规律,在此基础上,本文又讨论了失步运行时电流及其频率的变化规律.首先定性地分析,然后定量地证明,再进一步考虑电力系统实际参数的影响.为分析研究电力系统失步运行时的行为和电气量的特征的利用提供理论基础.

Analysis of the Law of the Change in Current and its Frequency under Asynchronous Operation of Power Systems

As we know, the understanding of the law of the change in current and its frequency under asynchronous operation of the power systems is very important for us to develope the new safety technology, automatic device and switching equipment, as well as for us to judge and handle the asynchronous operation of the power systems. In this paper, based on the law of the change in valtage and its frequency under asynchronous operation of the power systems presented in reference [1], the law of the change in current and its frequency under asynchronous operation of the power syste is discussed and analysed qualitatively and proved quantitatively. The effects of the real parameters of the power systems on thfs law are also considered. A theoritical basis is therefore provided for analysing the behavior of the power systems under asynchronous operation and for applying the characteristics of the electrical variables to practice.