Research on the Optimal Operation Method of DC Microgrid Base on the New DC Power Distribution Management System

Qing-wen, Peng; Yuan, Zhaohui; Ouyang, Bo; Guo, Peiqian; Qu, Lu

doi:10.3390/electronics9010009

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Decentralized operation control suffers from the weak capability for the dc network voltage regulation, and the stable voltage range becomes narrow once the scope of the grouped building system increases [18]. However, the voltage band of 350–400 V can be reached once the 375 V is chosen for DC buildings considering the requirements of AC and DC power‐consuming devices [3, 19].…”

Section: Operational Control Analysis Of the Lvdcbdusmentioning

confidence: 99%

Low‐voltage DC building distribution and utilization system and its implementation in China southern grid

Guo

Zhang

Yuan

et al. 2023

IET Renewable Power Gen

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The demand‐side DC electricity‐using equipment and newly integrated renewables are driving the transformation of power distribution and utilization mode. The building system based on DC technology is emerging as a promising option. In the low‐voltage DC building distribution and utilization system (LVDCBDUS), global energy optimization management and operational control arrangement are key components. To obtain exemplary achievements of those, two different DC building energy management system (DC BEMS) integration schemes are investigated according to the respective features and application‐required functions of various system networking structures. Centralized and decentralized control strategies are presented and discussed for buildings with AC–DC transformation and newly built LVDCBDUSs. On this basis, the centralized DC BEMS and operational control strategy are applied to the first multi‐scenario low‐carbon city‐based future building project—Shenzhen IBR Future Complex. The operation data are recorded and analysed. Problems encountered during the implementation are summarized, and requirements of converter equipment, new technologies and marketization are further discussed to promote the high‐quality development of the LVDCBDUS.

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Section: Operational Control Analysis Of the Lvdcbdusmentioning

confidence: 99%

Low‐voltage DC building distribution and utilization system and its implementation in China southern grid

Guo

Zhang

Yuan

et al. 2023

IET Renewable Power Gen

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“…The ESS is used to eliminate the DC bus voltage fluctuations of DC microgrids, and the appropriate control of the ESS could enhance the system stability [9][10][11]. Batteries are widely adopted in ESSs; however, frequent charging and discharging processes significantly decrease their work life.…”

Section: Introductionmentioning

confidence: 99%

Large-Signal Stabilization Method for Islanded DC Microgrids Considering Battery and Supercapacitor Hybrid Energy Storage Systems

Liu

Suo²,

Song³

et al. 2022

Electronics

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Islanded DC microgrids composed of distributed generators (DGs), constant power loads (CPLs), parallel converters, batteries and supercapacitors (SCs) are typical nonlinear systems, and guaranteeing large-signal stability is a key issue. In this paper, the nonlinear model of a DC microgrid with a hybrid energy storage system (HESS) is established, and large-signal stability criteria are obtained. The HESS consists of batteries and SCs. The derived criteria reveal the influences of the filter parameters, CPL power, DG power and the proportional control parameters of the battery converter and the SC converter on the system large-signal stability. Furthermore, important large-signal stabilization methods for regulating the HESS converter’s control parameters can easily achieve the large-signal stabilization of islanded DC microgrids without extra equipment. The paper is summarized as follows: First, the topology of and control strategy for a DC microgrid with an HESS and CPLs are proposed. Then, according to the characteristics of the HESS, the DGs and the CPLs, the system is equivalently simplified. Finally, the nonlinear model and large-signal stability criteria are both derived using the mixed potential theory, and a large-signal stabilization design method for the HESS converter’s control parameters is proposed. The experimental and simulation results show the effectiveness of the proposed large-signal stabilization method.

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Review on optimal power flow in a hybrid AC/DC distribution network

Altorok,

Ukil,

Nair

et al. 2024

Electric Power Systems Research

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Research on the Optimal Operation Method of DC Microgrid Base on the New DC Power Distribution Management System

Cited by 5 publications

References 3 publications

Low‐voltage DC building distribution and utilization system and its implementation in China southern grid

Low‐voltage DC building distribution and utilization system and its implementation in China southern grid

Large-Signal Stabilization Method for Islanded DC Microgrids Considering Battery and Supercapacitor Hybrid Energy Storage Systems

Review on optimal power flow in a hybrid AC/DC distribution network

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