A Load Switching Group based Feeder-level Microgrid Energy Management Algorithm for Service Restoration in Power Distribution System

Hu, Rongxing; Li, Yiyan; Zhang, Si; Shirsat, Ashwin; Muthukaruppan, Valliappan; Tang, Wanchun; Baran, Mesut; Lubkeman, David; Lü, Ning

doi:10.48550/arxiv.2011.08735

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2021

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“…As shown in Fig. 6(a), the PV and load power scheduling are based on the energy management algorithm in [16], where PV curtailment and load shedding are executed to meet the power supply needs. From Fig.…”

Section: Real-time Simulation Resultsmentioning

confidence: 99%

A Novel Grid-forming Voltage Control Strategy for Supplying Unbalanced Microgrid Loads Using Inverter-based Resources

Xu¹,

Paduani²,

Yu³

et al. 2021

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This paper presents a novel grid-forming voltage control strategy for a battery energy storage system to maintain balanced three-phase output voltages when serving unbalanced loads. A stationary reference frame (αβ) based control scheme is proposed to regulate positive-sequence and negative-sequence voltages. Compared with the conventional rotating reference frame (dq) based control scheme, the proposed scheme shows better dynamic performance. Then, we analyze the system zerosequence network and propose adding a grounding transformer to the Y/Yg connected output transformer to further reduce the voltage unbalance at the point of common coupling. The simulation results demonstrate the effective performance of the proposed voltage control scheme. Based on the results, the power-voltage unbalance curve is derived for different output transformer configurations to establish the relationship between the power unbalance limit and the voltage unbalance limit for microgrid power scheduling.

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Section: Real-time Simulation Resultsmentioning

confidence: 99%