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首页> 外文期刊>American journal of applied sciences >Voltage Swells Improvement in Low Voltage Network Using Dynamic Voltage Restorer
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Voltage Swells Improvement in Low Voltage Network Using Dynamic Voltage Restorer

机译：使用动态电压恢复器改善低压网络中的电压骤升

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摘要

Problem statement: Voltage disturbances are the most common power quality problem due to the increased use of a large numbers of sophisticated electronic equipment in industrial distribution system. The voltage disturbances such as voltage sags, swells, harmonics, unbalance and flickers. High quality in the power supply is needed, since failures due to such disturbances usually have a high impact on production cost. There are many different solutions to compensate voltage disturbances but the use of a DVR is considered to be the most cost effective method. The objective of this study is to propose a new topology of a DVR in order to mitigate voltage swells using a powerful power custom device namely the Dynamic Voltage Restorer (DVR). Approach: New configuration of a DVR with an improvement of a controller based on direct-quadrature-zero method has been introduced to compensate voltage swells in the network. Results: The effectiveness of the DVR with its controller were verify using Matlab/Simulink's SimPower Toolbox and then implemented using 5KVA DVR experimental setup. Simulations and experimental results demonstrate the effective dynamic performance of the proposed configuration. Conclusion: The implimentation of the proposed DVR validate the capabilities in mitigating of voltage swells effectiveness.During voltage swells, the DVR injects an appropriate voltage to maintain the load voltage at its nominal value.
机译：问题陈述：电压干扰是最常见的电能质量问题，这是由于在工业配电系统中越来越多地使用大量复杂的电子设备。电压干扰，例如电压骤降，骤升，谐波，不平衡和闪烁。由于这种干扰引起的故障通常会对生产成本造成很大影响，因此需要高质量的电源。有许多不同的解决方案可以补偿电压干扰，但是使用DVR被认为是最经济的方法。这项研究的目的是提出一种DVR的新拓扑，以便使用功能强大的功率定制设备即动态电压恢复器（DVR）减轻电压骤升。方法：引入了DVR的新配置，并在基于直接正交零方法的基础上改进了控制器，以补偿网络中的电压骤升。结果：使用Matlab / Simulink的SimPower Toolbox验证了DVR及其控制器的有效性，然后使用5KVA DVR实验装置进行了实现。仿真和实验结果证明了所提出配置的有效动态性能。结论：建议的DVR的实现验证了缓解电压骤升有效性的能力。在电压骤升期间，DVR注入适当的电压以将负载电压保持在其标称值。

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