Real-World Implementation of Advanced PV Curtailment and Reactive Power Control Using Non-Smart PV Inverter: A Case Study
Real-World Implementation of Advanced PV Curtailment and Reactive Power Control Using Non-Smart PV Inverter: A Case Study
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使用非智能光伏逆变器实际实现先进的光伏限电和无功功率控制：案例研究
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
S. Ula
中科院分区：
文献类型：
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作者：
R. Faruque;Matthew Frank Scudder;S. Ula
近年来，太阳能是全球可再生能源中装机增长最快的。但电网过电压和电能质量问题、昂贵的输电线路升级、线路拥堵等都阻碍了太阳能在已有百年历史的配电网中的更大渗透。现有电网基础设施的设计并不是为了调节由太阳能过度渗透的间歇性引起的过电压问题。智能逆变器可以通过提供无功支持来缓解过压和欠压问题，但部署这些逆变器需要大规模、昂贵的系统升级。本文通过在实际微电网测试台上对三个现有的非智能光伏逆变器实施实时有功削减和无功变化，并通过实时数据监测进行验证，以经济有效的方式解决了这一问题。所提出的控制系统的结果不仅符合智能逆变器的新“规则21”，UL 1741SA，而且还节省了新的智能逆变器和现有线路升级的支出。
Solar Energy has experienced the fastest increase of installation around the globe among all the Renewable Energy Sources in recent years. But grid overvoltage and power quality issues, expensive transmission line upgrades, line congestion etc. are standing in the way of larger penetration of solar in the existing century-old distribution grid. The existing grid infrastructure was not designed to regulate the overvoltage issues caused by the intermittent nature of the excess penetration of solar energy. Smart inverters can go a long way in mitigating the overvoltage and undervoltage issues by providing reactive power support, but deploying these inverters require large-scale, expensive system upgradation. This paper deals with this problem in a cost-effective way by implementing real-time active power curtailment and reactive power variation on three already existing, non-smart PV inverters at a real-world microgrid testbed, and validating through real-time data monitoring. The outcomes of the presented control systems are not only in compliance with the new ‘Rule 21’ for smart inverters, UL 1741SA but also saves the expenditure of a new smart inverter and existing line upgrades.