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首页> 外文期刊>Smart Grid, IEEE Transactions on >Voltage Variation Mitigation Using Reactive Power Management of Distributed Energy Resources in a Smart Distribution System
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Voltage Variation Mitigation Using Reactive Power Management of Distributed Energy Resources in a Smart Distribution System

机译：在智能配电系统中使用分布式能源的无功功率管理来缓解电压变化

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摘要

Inverters (dc/ac converters) are commonly used to connect distributed energy resources (DERs) to the grid. Hence, the penetration rate of inverters is growing in distribution systems along with DERs. Depending on their development and penetration level, grid requirement standards for DERs are revised. New grid codes allow DERs to control their output reactive power to provide reactive power ancillary service. In this paper, the main contribution is reactive power management of inverter-based DERs (IBDER) through a practical procedure, which controls the available volt-ampere (headroom) of inverters to improve voltage profile and distribution system operation when confronting with short-term voltage magnitude variations. In this regard, a two-level control strategy (namely, central and local control levels) is proposed. In the central controller, reactive power management of IBDERs is optimized in short time intervals for mitigating voltage variations. The optimized data is sent to the local controllers of IBDERs to increase the speed of reaction to voltage variations in each time interval. The improvement of distribution systems operation with a high penetration rate of IBDERs is illustrated by performing the simulation of the proposed control strategy on a smart distribution test system.
机译：逆变器（dc / ac转换器）通常用于将分布式能源（DER）连接到电网。因此，在配电系统中，与DER一起，逆变器的普及率正在增长。根据其发展和渗透水平，修订了DER的电网要求标准。新的电网法规允许DER控制其输出无功功率，以提供无功功率辅助服务。本文的主要贡献是通过实用程序对基于逆变器的DER（IBDER）进行无功功率管理，该程序可控制逆变器的可用伏安（净空），从而在遇到短期情况时改善电压分布和配电系统的运行电压幅度变化。在这方面，提出了两级控制策略（即中央和本地控制级别）。在中央控制器中，IBDER的无功功率管理在较短的时间间隔内得到了优化，以减轻电压变化。将优化的数据发送到IBDER的本地控制器，以提高每个时间间隔内对电压变化的反应速度。通过在智能配电测试系统上对建议的控制策略进行仿真，说明了具有较高IBDER渗透率的配电系统运行的改进。

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