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首页> 外文期刊>Electric Power Components and Systems >Extensive Application of UPQC-L for a Dual Point of Common Coupling System with Multiple Loads under Unbalanced Source Condition
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Extensive Application of UPQC-L for a Dual Point of Common Coupling System with Multiple Loads under Unbalanced Source Condition

机译：UPQC-L在不平衡源条件下在多负载双点公共耦合系统中的广泛应用

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摘要

This paper presents a synchronous reference frame (SRF)-based power angle control (PAC) approach for a specific unified power quality conditioner (UPQC) arrangement, termed as UPQC-L for dual point of common coupling system under unbalanced source voltage condition. In contrast to a conventional configuration of UPQC, the static compensator (STATCOM) part is on left side of UPQC-L, while dynamic voltage restorer (DVR) is on the right side. The UPQC-L configuration is specifically adapted for protection of sensitive and critical load types from voltage disturbances. Along with its basic compensation capability of current harmonic compensation and voltage compensation, it efficiently handles reactive power demand from sensitive load. This is achieved with the introduction of PAC concept for effective sharing of reactive power between STATCOM and DVR. The extraction of instantaneous power angle faces difficulty with unbalanced voltage and UPQC-L configuration. Thus, the control algorithm for UPQC-L is designed based on SRF and numerical analysis approach with equal reactive power sharing phenomena by STATCOM and DVR of UPQC-L. UPQC-L with the proposed control approach is successfully implemented in MATLAB/SIMULINK (The Mathworks, Inc. USA) and verified experimentally for mitigation of voltage disturbances (such as sag/swell, unbalancing, and harmonics), current harmonics, and high-reactive power demand.
机译：本文针对特定的统一电能质量调节器（UPQC）装置，提出了一种基于同步参考系（SRF）的功率角控制（PAC）方法，在不平衡的源电压条件下，该系统被称为UPQC-L，用于双点公共耦合系统。与UPQC的常规配置相比，静态补偿器（STATCOM）部分在UPQC-L的左侧，而动态电压恢复器（DVR）在右侧。 UPQC-L配置专门用于保护敏感和关键负载类型免受电压干扰。除了具有电流谐波补偿和电压补偿的基本补偿功能外，它还可以有效处理敏感负载的无功功率需求。这是通过引入PAC概念来实现的，以在STATCOM和DVR之间有效共享无功功率。瞬时功率角的提取在不平衡电压和UPQC-L配置下面临困难。因此，基于SRF和数值分析方法，设计了UPQC-L的UPQC-L控制算法。具有建议的控制方法的UPQC-L已在MATLAB / SIMULINK（美国The Mathworks，Inc.）中成功实现，并已通过实验验证，可以缓解电压干扰（例如骤降/骤升，不平衡和谐波），电流谐波和高无功功率需求。

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