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首页> 外文期刊>Smart Grid, IEEE Transactions on >Distributed Control Strategy Based on a Consensus Algorithm and on the Conservative Power Theory for Imbalance and Harmonic Sharing in 4-Wire Microgrids
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Distributed Control Strategy Based on a Consensus Algorithm and on the Conservative Power Theory for Imbalance and Harmonic Sharing in 4-Wire Microgrids

机译：基于共识算法和保守功率理论的4线微电网不平衡和谐波共享的分布式控制策略

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摘要

A distributed control system is proposed which uses the Conservative Power Theory (CPT) and a consensus algorithm to share imbalance and harmonics between different converters in three-phase four-wire droop-controlled Microgrids (MGs). The CPT is used to identify the balanced, unbalanced and distorted components of the currents and powers in the system. Control loops based on virtual impedance and implemented in the stationary a-b-c frame are then used to distribute these components between the various converters in the MG. The magnitudes of the virtual impedances are adaptively calculated using a novel consensus-based distributed control scheme with the aim of sharing imbalances and harmonics according to the residual VA capacity of each converter whilst regulating the imbalance and distortion at their output to meet the appropriate IEEE power quality standards. Extensive simulations show that the proposed distributed control has excellent performance, and experimental validation is provided using a laboratory-scale 4-wire MG.
机译：提出了一种分布式控制系统，该系统使用保守功率理论（CPT）和共识算法来共享三相四线下垂控制微电网（MG）中不同转换器之间的不平衡和谐波。 CPT用于识别系统中电流和功率的平衡，不平衡和失真分量。然后，基于虚拟阻抗并在固定a-b-c框架中实现的控制环用于在MG中的各个转换器之间分配这些组件。使用基于共识的新型分布式控制方案自适应计算虚拟阻抗的大小，其目的是根据每个转换器的剩余VA容量共享不平衡和谐波，同时调节其输出的不平衡和失真以满足适当的IEEE功率质量标准。大量的仿真表明，所提出的分布式控制具有出色的性能，并且使用实验室规模的4线制MG进行了实验验证。

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