Economic-Effective Multi-Energy Management with Voltage Regulation Networked with Energy Hubs

Pengfei Zhao, Chenghong Gu, Zhidong Cao, Zechun Hu, Xin Zhang, Xinlei Chen, Ignacio Hernando-Gil, Yucheng Ding

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Abstract

This paper develops a novel two-stage coordinated volt-pressure optimization (VPO) for integrated energy systems (IES) networked with energy hubs considering renewable energy sources. The promising power-to-gas (P2G) facilities are used for improving the interdependency of the IES. The proposed VPO contains the traditional volt-VAR optimization functionality to mitigate the voltage deviation while ensuring a satisfying gas quality due to the hydrogen mixture. In addition to the conventional voltage regulating devices, i.e., on-load tap changers and capacitor banks, P2G converter and gas storage are used to address the voltage fluctuation problem caused by renewable penetration. Moreover, an effective two-stage distributionally robust optimization (DRO) based on Wasserstein metric is utilized to capture the renewable uncertainty with tractable robust counterpart reformulations. The Wasserstein-metric based ambiguity set enables to provide additional flexibility hedging against renewable uncertainty. Extensive case studies are conducted in a modified IEEE 33-bus system connected with a 20-node gas system. The proposed VPO provides a voltage-regulated economic operation scheme with gas quality ensured that contributes to high-quality but low-cost multi-energy supply to customers.
Original languageEnglish
Article number9224868
Pages (from-to)2503 - 2515
JournalIEEE Transactions on Power Systems
Volume36
Issue number3
Early online date15 Oct 2020
DOIs
Publication statusPublished - 31 May 2021

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