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首页> 外文期刊>International journal of electrical and power engineering >Mitigation of Voltage Sags and Voltage Swells by Dynamic Voltage Restorer
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Mitigation of Voltage Sags and Voltage Swells by Dynamic Voltage Restorer

机译：动态电压恢复器缓解电压骤降和电压骤升

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摘要

Modern industrial processes are based on a large amount of electronic devices such as programmable logic controllers and adjustable speed drives. Unfortunately, electronic devices are sensitive to disturbances and thus industrial loads become less tolerant to power quality problems such as voltage sags, voltage swells and harmonics. The Dynamic Voltage Restorer (DVR) has become popular as a cost effective solution for the protection of sensitive loads from voltage sags and swells. This study deals with modeling and simulation of a Dynamic Voltage Restore (DVR) for mitigation of voltage sags and voltage swells. The control of the compensation voltages in DVR based on d-q-o algorithm is discussed. The controller in d-q-o coordinates has better performance than conventional controllers. The controlled variables in d-q-o coordinates are then inversely transformed to the original voltages which produced reference voltages to a DVR. The DVR restores constant load voltage and voltage wave form by injecting an appropriate voltage. Effectiveness of proposed technique is investigated through computer simulation by using Matlab/Simulnk software. The simulation results have shown validation of the control system.
机译：现代工业过程基于大量的电子设备，例如可编程逻辑控制器和可调速驱动器。不幸的是，电子设备对干扰敏感，因此工业负载对诸如电压骤降，电压骤升和谐波之类的电能质量问题的容忍度降低。动态电压恢复器（DVR）已成为一种经济高效的解决方案，用于保护敏感负载免受电压骤降和骤升的影响。这项研究涉及动态电压恢复（DVR）的建模和仿真，可减轻电压骤降和电压骤升。讨论了基于d-q-o算法的DVR中补偿电压的控制。 d-q-o坐标中的控制器具有比常规控制器更好的性能。然后，将d-q-o坐标中的受控变量反向转换为原始电压，从而产生DVR的参考电压。 DVR通过注入适当的电压来恢复恒定的负载电压和电压波形。使用Matlab / Simulnk软件通过计算机仿真研究了所提出技术的有效性。仿真结果表明控制系统的有效性。

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