Research of seamless transfer control strategy of microgrid system

Yang, Mingjie; Zhuo, Fang; Wang, X. W.; Guo, Haiping; Zhou, Yadong

doi:10.1109/icpe.2011.5944504

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…Besides that, the cost of this device should be pondered. Secondly, a similar situation may occur with leader-follower ("master-slave") methodologies [141], [149]. If the strategy is not designed so that the failure of the leader unit can be substituted or the microgrid can continue to work without it, the reliability levels are low in the system.…”

Section: Discussionmentioning

confidence: 99%

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Grid-Connected and Seamless Transition Modes for Microgrids: An Overview of Control Methods, Operation Elements, and General Requirements

Souza

Freitas

2022

IEEE Access

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Microgrids are relatively smaller but complete power systems. They incorporate the most innovative technologies in the energy sector, including distributed generation sources and power converters with modern control strategies. In the future smart grids, they will be an essential element in their architecture. Their potential to offer many economic, social and environmental services through advanced electrical techniques has led to a growing interest in the theme. Although the islanding condition is a very important feature of microgrids, only with the implementation of grid connection and seamless transition they will demonstrate their full capacity. However, there are still many questions surrounding these operation modes and this paper tries to answer part of them. To do that, several aspects in the field are approached. The history and late development of microgrids are revisited. The main concepts are presented. The islanded mode is revised, since it is intrinsically linked to the other working states of the microgrid. The requirements for the interconnection of microgrids to an external grid are discussed. The operation elements are also analyzed. A crucial part of the grid-connected microgrids and their seamless transfer conditions, the control methods found in the literature are extensively reviewed. The paper is concentrated in the analysis of control methods for AC microgrids and AC power systems, therefore, it does not enter in detail or investigates profoundly the topologies applied in the power electronics structures nor DC microgrids and DC power systems.INDEX TERMS Microgrid, grid-connected mode, seamless transition, islanded mode, droop control, distributed generation, smart grid, power electronics.

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Section: Discussionmentioning

confidence: 99%

“…A "master-slave" approach is proposed in [141]. One or more inverters are voltage controlled and function as the "master" participants, while the other units are current controlled and will be the "slave" members, being guided by the first ones.…”

Section: A Droop-independent Control Methodsmentioning

confidence: 99%

Grid-Connected and Seamless Transition Modes for Microgrids: An Overview of Control Methods, Operation Elements, and General Requirements

Souza

Freitas

2022

IEEE Access

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“…Every microgrid is consisted number of new energy sources that require a voltage source or inverter to manage the voltage and power of each source to use the power output of these resources and to connect to the network. Converters such as a voltage source inverter (VSI) are commonly used as power interfaces in many applications including uninterruptible power supplies (UPS) and renewable energy systems (such as solar cells and wind turbines) [2]. Also, the good performance of the inverter independently and connected in the network, requires accurate voltage and frequency control to maintain the function and control the output power.…”

Section: Introductionmentioning

confidence: 99%

Design of a new backstepping controller for control of microgrid sources inverter

Zadehbagheri

Kiani

Sutikno

et al. 2022

IJECE

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<p><br />Emergency power supply is becoming an important capability for many home or industrial electronic and computer devices. Therefore, the performance of the designed unintermptible power supplies (UPS) inverters has low distortion at the output voltage. Initially, such inverters were controlled by proportional integral (PI) control classic rules. This method is difficult to understand the limitations of stability and to apply transient response to strong external disturbances. In this paper, an inverter is simulated and offered for single-phase and three-phase voltage controlled by a non-linear controller. For this purpose, a comparison has been made between the controller performance and the PI controller. In the first step, there is a backstepping regulator that uses the stability tool next to the Lyapunov function. And the other regulator operates according to the PI method. The performance of these two regulators is simulated during a change in reference or a load change in MATLAB. Also, a method of feedback voltage control based on the Lyapunov theory for controlling of the distributed generation (DG) unit independent Inverter is presented. The proposed controller is not only simple, but also against the sudden changes in load and the unspecified system is resistant.</p>

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“…While the power grid breaks down or we want MG to be off grid, the MG turns into island mode. The master inverter will turn into voltage source mode; it takes charge of supporting the MG voltage, while the other inverters still work in current source mode [1]. An energy management system relays on a matching communication platform.…”

Section: Introductionmentioning

confidence: 99%

Communication platform for energy management system in a master-slave control structure microgrid

Zhu

Zhuo

Xiong

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

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Renewable energy based micro grids have great importance to deal with energy-intensive. In this paper, we build a microgrid consist of AC line and DC line at first. A common microgrid has its own control strategy and energy management system. With a compatible energy management system, those distributed generations and energy storage units can mostly improve the micro grid's efficiency. During island mode, we should make full use of renewable energy to make self-sufficient. And during grid-connected mode, we should use economical method to reduce the cost paid for electricity. And even under some certain conditions, the micro gird can supply its electricity to the utility grid to improve the robustness and emergency capability. The communication system has a great significance for the energy management system in a micro grid. In this paper, we build a new communication platform for a micro grid with master-slaver strategy. We make full use of the communicating function of DSP, and with the help of human machine interface (HMI) on main devices, this communication platform can effectively complete the energy management task. On this platform, we use CAN-open protocol between master and slave inverter devices, use Modbus-RTU protocol to display data on every main device, use Modbus TCP protocol to build an Ethernet for control center. This paper will show the structure and function of the communication system in a micro grid with master-slaver strategy.

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Research of seamless transfer control strategy of microgrid system

Cited by 14 publications

References 7 publications

Grid-Connected and Seamless Transition Modes for Microgrids: An Overview of Control Methods, Operation Elements, and General Requirements

Grid-Connected and Seamless Transition Modes for Microgrids: An Overview of Control Methods, Operation Elements, and General Requirements

Design of a new backstepping controller for control of microgrid sources inverter

Communication platform for energy management system in a master-slave control structure microgrid

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