Potential of Using Multiterminal LVDC to Improve Plug-In Electric Vehicle Integration in an Existing Distribution Network

Pei, Wei; Deng, Wei; Zhang, Xue; Qu, Hui; Sheng, Kun

doi:10.1109/tie.2014.2379219

Cited by 44 publications

(17 citation statements)

References 33 publications

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“…A DC voltage coordinated control strategy is discussed in [16], which analysis the coordinated operation between the interface VSC and electric vehicle energy storage system under grid-connected operation, converter current-limit and islanding operation conditions. Pei proposed an adaptive droop control for the multi-terminal low voltage DC distribution system, and presented a probabilistic evaluation method to analyze the plug-in electric vehicle integration capacity [17]. Based on these research work, IEE-CAS is going to design energy management system for the microgrid in Fig.…”

Section: B Ems and Coordinated Controlmentioning

confidence: 99%

Intelligent DC Microgrid living Laboratories - A Chinese-Danish cooperation project

Rodriguez-Diaz

Savaghebi

et al. 2015

2015 IEEE First International Conference on DC Microgrids (ICDCM)

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This paper presents a research project focus on the development of future intelligent direct-current (DC) microgrids which is being deployed for highly efficient integration of distributed generation and modern electronic loads. The project is based on the collaboration between research institutes in China and Denmark, aiming to explore the different aspects of DC microgrids: design, modelling, control, coordination, communications and management. In addition, a future Living Laboratory will also be integrated into the Intelligent DC Microgrids Laboratory, which will serve as demonstration facility for low voltage direct-current (LVDC) distribution systems. Research is carried out in both Intelligent DC Microgrid Laboratories, focused on industry in China and residential applications in Denmark.

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Section: B Ems and Coordinated Controlmentioning

confidence: 99%

Intelligent DC Microgrid living Laboratories - A Chinese-Danish cooperation project

Rodriguez-Diaz

Savaghebi

et al. 2015

2015 IEEE First International Conference on DC Microgrids (ICDCM)

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“…These will require a large investment, estimated to be £30-45 billion for the UK grid and as such, radical solutions in LV networks will be needed for meeting these expect demand increases [3]. LV Direct Current (LVDC) distribution systems have recently been recognised by a number of industrial and research groups as one of the preferable solutions to alleviate the strain and increase the capacity of existing LV networks in order to meet this anticipated growth in transport and heat demand [4,5].…”

Section: Introductionmentioning

confidence: 99%

Improved voltage‐based protection scheme for an LVDC distribution network interfaced by a solid state smart transformer

Wang

Emhemed²,

Burt

2019

IET Generation, Transmission & Distribution

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The increasing electrification of transport and heat will place increasing demand on low voltage (LV) networks with the potential to overload MV/LV transformers and LV cables. Deployment of a solid state transformer (SST) at MV/LV substations and using LV Direct Current (LVDC) distribution systems offer great potential to address such c hallenges. However, the SST deployment in addition to the introduction of LVDC will fundamentally change LV fault behaviour and protection requirements due to the limited short-circuit capabilities of such technologies. The SST will deliver limited fault c urrents, making currentbased protection (widely used in LV networks) less reliable. Therefore, this paper presents an advanced communication-less protection scheme which can effectively detect and locate DC faults even with reduced fault levels. The devel oped protection scheme overcomes the selectivity limitations in LVDC voltage-based protection solutions by using a combination of DC voltage magnitude, voltage concavity (sign of d 2 v/dt 2) and the sign of the rate of change of current (di/dt) regardless of the current magnitudes. The credibility of the developed protection algorithm is tested against different fault scenarios applied on an active LVDC network model built in PSCAD/EMTDC. Noise signals have been included in the simulation to appraise the resilience of the developed scheme.

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“…It enables the microgrids that are interconnected with back-to-back converters to directly share power with each other so as to minimize the operation cost of the MMGs. Reference [16] utilizes multi-terminal low-voltage direct current in distribution network to connect multiple feeders or transformers. A corresponding adaptive droop control strategy is proposed to improve the integration capacity of plug-in electric vehicles in the distribution system.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids

Huang

Tai

et al. 2019

Energies

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Multiple microgrids (MMGs) are clusters of interconnected microgrids that have great potential for integrating a large number of distributed renewable energies (DREs). The grid-connected control scheme is important for the exploration of the MMGs’ operation potential. In this paper, a multi-layer coordinated control scheme for DC interconnected MMGs is proposed to optimize their operation and improve their operation friendliness. An adaptive droop control method is designed for the DC connection interfaces of the MMGs to adaptively manage the power exchange among the sub-microgrids. Meanwhile, the strategy of power fluctuation suppression is developed for the hybrid energy storage system (HESS) in the MMGs. The coordination among the sub-microgrids and the HESS is then clarified by the proposed control scheme to optimize the AC tie-line power and make the MMGs a highly coordinated collective. A case study is performed in PSCAD/EMTDC based on the demonstration project in Guangxi, China. The results show that the proposed multi-layer coordinated control scheme realizes the coordinated operation of the MMGs, fully exploits the complementarity of the MMGs, and improves the operation friendliness among the sub-microgrids and the utility grid. Thus the integration and utilization of a large number of DREs is enhanced.

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Potential of Using Multiterminal LVDC to Improve Plug-In Electric Vehicle Integration in an Existing Distribution Network

Cited by 44 publications

References 33 publications

Intelligent DC Microgrid living Laboratories - A Chinese-Danish cooperation project

Intelligent DC Microgrid living Laboratories - A Chinese-Danish cooperation project

Improved voltage‐based protection scheme for an LVDC distribution network interfaced by a solid state smart transformer

A Multi-Layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids

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