System Integration and Hierarchical Power Management Strategy for a Solid-State Transformer Interfaced Microgrid System

Yu, Xunwei; She, Xu; Ni, Xijun; Huang, Alex Q.

doi:10.1109/tpel.2013.2289374

Cited by 132 publications

(52 citation statements)

References 26 publications

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“…The sharing mechanism is implemented by the k sh gain, which can be online updated based on the sh * command. The command is given by the high-level control loops [22] and could be changed considering different operation constraints such as: 1) economical aspects, 2) reliability considerations and 3) maintenance operation. The k sh gain is a number between [−1, 1], leading to the different operation modes: 1) mode#1.…”

Section: System Control a 3p-sst Controlmentioning

confidence: 99%

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Implementation of a Hybrid Distributed/Centralized Real-Time Monitoring System for a DC/AC Microgrid With Energy Storage Capabilities

Garcı́a

Arboleya

Belaid

et al. 2016

IEEE Trans. Ind. Inf.

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Abstract-This paper proposes a combined distributed/centralized architecture for the control and monitoring of a hybrid DC/AC microgrid with energy storage capabilities. The monitoring system is based on an own developed C++ framework for the measurement and real-time state estimation of the microgrid. Calculations running at sampled values (SV) frequency (10kHz) are implemented into a set of distributed measurement and processing units which have a TCP/IP communication link with a central server running the powerflow (PF) algorithm. The architecture is fully scalable, with the only restrictions of the signal processing capabilities of the distributed units, LAN bandwidth and central server calculation capabilities. The proposed system includes the hardware and software architecture for the monitoring of the microgrid, the communications scheme, the implementation of real-time algorithms for grid state estimation, a graphical user interface including different visualization alternatives and data storing/retrieving capabilities.

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Section: System Control a 3p-sst Controlmentioning

confidence: 99%

“…The traditional distribution center is retrofitted by using a three-port solid state transformer (3P-SST) [22]. A central ESS is connected to one of the three ports (see Fig.…”

mentioning

confidence: 99%

Implementation of a Hybrid Distributed/Centralized Real-Time Monitoring System for a DC/AC Microgrid With Energy Storage Capabilities

Garcı́a

Arboleya

Belaid

et al. 2016

IEEE Trans. Ind. Inf.

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“…Recently, solid-state-transformers (SSTs) have emerged in the electricity industries where new technologies such as the smart grid, the renewable energies, and the DC distribution systems are adopted [1][2][3][4][5][6]. A SST is a power transformer, which is based on power electronics technology, so that the voltage and the current of the primary and the secondary sides can be actively compensated or controlled which cannot be realized in traditional power transformers.…”

Section: Introductionmentioning

confidence: 99%

Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices

et al. 2018

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This paper describes the power stage design, control, and performance evaluation of a 13.2 kV/10 kVA solid-state-transformer (SST) for a power distribution system. The proposed SST consists of 10 modules where each individual module contains a unidirectional three-level power factor correction (PFC) converter for the active-front-end (AFE) stage and an LLC resonant converter for the isolated DC-DC stage. The operating principles of the converters are analyzed and the modulation and the control schemes for the entire module are described in detail. The DC-link voltage imbalance is also less than other SST topologies due to the low number of uncontrollable switching states. In order to simplify the control of the power stage, a modulation strategy for the AFE stage is proposed, and the modulation frequency of the LLC converter is also fixed. In addition, a compensation algorithm is suggested to eliminate the current measurement offset in the AFE stage. The proposed SST achieves the unity power factor at the input AC current regardless of the reactive or nonlinear load and a low voltage regulation at the AC output. In order to verify the effectiveness of the SST, the 13.2 kV/10 kV SST prototype is built and tested. Both the simulation and the experimental results under actual 13.2 kV line show the excellent performance of the proposed SST scheme.

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“…The increasing penetration of renewable generation and a fast implementation of the electric vehicle are just two trends that can stress the current grid by causing voltage variations larger than those the system can withstand. One innovative solution to many of these problems is the Solid State Transformer (SST) [3]- [10]. This new device is foreseen as a component that might cope with many challenges of the future smart grid since it can enhance power quality performance and expand the capabilities of the conventional transformer: voltage sag compensation, instantaneous voltage regulation, harmonic compensation, power factor correction, auto-balancing, short-circuit protection, variable-frequency output, bidirectional power flows [11]- [13].…”

Section: Introductionmentioning

confidence: 99%

A Solid State Transformer model for power flow calculations

Guerra

Martínez-Velasco

2017

International Journal of Electrical Power & Energy Systems

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System Integration and Hierarchical Power Management Strategy for a Solid-State Transformer Interfaced Microgrid System

Cited by 132 publications

References 26 publications

Implementation of a Hybrid Distributed/Centralized Real-Time Monitoring System for a DC/AC Microgrid With Energy Storage Capabilities

Implementation of a Hybrid Distributed/Centralized Real-Time Monitoring System for a DC/AC Microgrid With Energy Storage Capabilities

Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices

A Solid State Transformer model for power flow calculations

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