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首页> 外文期刊>Generation, Transmission & Distribution, IET >Performance analysis of a new fast negative sequence power injection oriented islanding detection technique for photovoltaic photovoltaic based voltage source converter based micro grid operation
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Performance analysis of a new fast negative sequence power injection oriented islanding detection technique for photovoltaic photovoltaic based voltage source converter based micro grid operation

机译：新型快速负序功率注入定向孤岛检测技术的性能分析

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摘要

This study presents a new study on islanding detection method for photovoltaic (PV) based voltage source converter (VSC) system incorporated with multiple distributed energy resources-based microgrid. The VSC system is basically controlled by positive sequence power–voltage loop, where dc-link capacitor voltage and point of common coupling power components are measured parameters. During grid disconnection an islanding detection loop is further implemented with existing control, based on negative sequence active and reactive powers of coupling bus. The threshold for the feedback sequence voltage is determined to maintain a negligible non-detection zone and to avoid false detection during other power quality issues. A binary tree classifier is adopted for threshold filter design to perturb disturbance parameters only during islanding events. Worst-case scenario is considered by implementing a PV-based VSC system from IEEE UL 1741 standard. The performance of the proposed islanding detection technique is investigated in MATLAB/ Simulink environment. The efficient detection of islanding with a fast run on time is ensured by the result analysis, where no significant effect in power quality during normal operating condition has been maintained.
机译：本研究提出了一种基于光伏（PV）的电压源转换器（VSC）系统的孤岛检测方法的新研究，该系统结合了多个基于分布式能源的微电网。 VSC系统基本上由正序电源电压环路控制，在该环路中，直流链路电容器电压和公共耦合电源分量的点为测量参数。在电网断开期间，基于耦合母线的负序有功功率和无功功率，利用现有控制进一步实现孤岛检测环路。确定反馈序列电压的阈值，以保持可忽略的非检测区域并避免在其他电能质量问题期间进行错误检测。采用二叉树分类器进行阈值滤波器设计，仅在孤岛事件期间才扰动干扰参数。通过实施IEEE UL 1741标准中基于PV的VSC系统，可以考虑最坏的情况。在MATLAB / Simulink环境中研究了提出的孤岛检测技术的性能。结果分析可确保以快速的运行时间有效地检测孤岛，而在正常运行条件下，电能质量不会受到明显影响。

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