Development of a power system laboratory supported by real-time systems

D. Surendra, K. Shubhanga
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引用次数: 12

Abstract

In this paper, features of a power system laboratory supported by real-time systems are outlined. These real-time systems are built using an open-source RTAI-Linux which not only offers a general purpose operating system features, but also has the hard real-time capabilities. On such a platform a transient waveform recorder is developed to capture the transient behaviour of a synchronous machine under various operating conditions such as voltage buildup and sudden 3-phase symmetrical short-circuit. Using the recorded transient waveforms, a synchronous machine model development task is carried out as per the IEEE Std. 115–2009 specified procedures. Employing such a model a time-domain simulation programme is run to tune the model parameters of the machine by comparing the simulation results against the recorded waveforms. It is also found that the transient waveform recorder provides a useful tool to visualize the synchronization and loss-of-synchronism transients either with the mains supply or with another machine. As an additional application, an open-loop excitation controller for a synchronous machine is developed which involved the realization of many hardware circuits such as inverse-cosine firing-circuit module, single-phase thyristor bridge-rectifier circuits and a DAC interfacing card. Such a laboratory is found to augment the classroom teaching of a power system dynamics course.
实时系统支持下电力系统实验室的开发
本文概述了实时系统支持下电力系统实验室的特点。这些实时系统是使用开源的RTAI-Linux构建的,它不仅提供了通用的操作系统特性,而且还具有硬实时功能。在这种平台上,开发了一种瞬态波形记录仪,用于捕捉同步电机在各种操作条件下的瞬态行为,例如电压积聚和突然的三相对称短路。利用记录的瞬态波形,按照IEEE Std. 115-2009规定的程序进行同步电机模型开发任务。采用这种模型,运行时域仿真程序,通过将仿真结果与记录的波形进行比较来调整机器的模型参数。还发现,瞬态波形记录仪提供了一个有用的工具来可视化同步和失同步的瞬态,无论是与主电源还是与另一台机器。作为一种额外的应用,开发了一种同步电机的开环励磁控制器,该控制器涉及许多硬件电路的实现,如反余弦点火电路模块、单相晶闸管桥式整流电路和DAC接口卡。建立这样的实验室是为了加强电力系统动力学课程的课堂教学。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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