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An improvement of voltage quality in low voltage distribution system using dynamic voltage restorer

机译:使用动态电压恢复器改善低压配电​​系统中的电压质量

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摘要

With the increased use of semiconductor devices (switched mode power supply) and ICT (information communication technology) equipment in homes, offices and the industry, power quality (PQ) is gaining significant interest to both the electric utility and the industry. The absence of power quality causes enormous economic losses all over the world; it is estimated that PQ problems cost commerce and industry about 100 billion Euros per annum in the European Union. One of the most and undesirable PQ phenomenon are voltage sags, which puts sensitive loads under risk. This project is therefore, aimed at mitigation of power quality problems such as voltage sag, voltage swell, interruption and harmonic at low voltage distribution system, using a versatile custom power device that is capable of mitigating various types of PQ disturbances called dynamic voltage restorer (DVR). Implementations of DVR have been proposed at both a medium and low voltage levels to protect sensitive loads from power quality problems. The proposed system is designed using Matlab/Simulink SimPower System Tools Box. The proposed DVR system comprises of line filter, voltage injection transformer, voltage source inverter, bypass switch and energy storage device from which the power necessary for compensation can be obtained during PQ disturbance. Simulation results verified the capability of the proposed DVR system in mitigating the power quality problems in a low-voltage distribution system.
机译:随着家庭,办公室和行业中半导体设备(开关电源)和ICT(信息通信技术)设备的使用越来越多,电能质量(PQ)引起了电力公司和整个行业的极大兴趣。电能质量的缺乏在世界范围内造成了巨大的经济损失。据估计,PQ问题每年在欧盟造成的商业和工业损失约为1000亿欧元。电压骤降​​是最令人讨厌的PQ现象之一,它使敏感负载处于危险之中。因此,本项目旨在使用通用的定制电源设备来缓解低压配电系统中的电压骤降,电压骤升,中断和谐波等电能质量问题,该设备能够缓解各种类型的PQ干扰,称为动态电压恢复器( DVR)。为了保护敏感负载免受电能质量问题的影响,已经提出了在中压和低压两种级别上使用DVR的实施方案。拟议的系统是使用Matlab / Simulink SimPower系统工具箱设计的。拟议的DVR系统包括线路滤波器,电压注入变压器,电压源逆变器,旁路开关和能量存储设备,在PQ扰动期间可以从中获得补偿所需的功率。仿真结果验证了所提出的DVR系统在缓解低压配电系统中电能质量问题方面的能力。

著录项

  • 作者

    Bukar Abba Lawan;

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  • 年度 2015
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  • 原文格式 PDF
  • 正文语种 en
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