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Networked Control Approach for Distributed Generation systems

IEEE/CAA Journal of Automatica Sinica 2018年第4期5卷 836-851页

作者： Magdi S.Mahmoud Mohamed Saif Ur Rahman systems Engineering Department King Fahd University of Petroleum and MineralsP.O.Box 5067Dhahran 31261Saudi Arabia

microgrid has emerged as an answer to growing demand for distributed generation(DG) in power systems. It contains several DG units including microalternator, photovoltaic system and wind generation. It turns out that sustained operation relies on the stability of these constituent systems. In this paper, a microgrid consisting of microalternator and photovoltaic system is modeled as a networked control system of systems(So S)subjected to packet dropouts and delays. Next, an observerbased controller is designed to stabilize the system in presence of the aforementioned communication constraints and simulation results are provided to support the control design methodology.

关键词： Microalternator microgrid systems networked control observer-based controller photovoltaic systems

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Load Shedding Application within a microgrid to Assure Its Dynamic Performance during Its Transition to the Islanded Mode of Operation

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Energy and Power Engineering 2013年第7期5卷 437-445页

作者： Dorel Soares Ramos Tesoro Elena Del Carpio-Huayllas Ricardo Leon Vasquez-Arnez Department of Electric Power and Automation Engineering University of Sao PauloSao PauloBrazil FDTE(Foundation for the Technological Development of the Engineering Sciences) Sao PauloBrazil

This article presents the simulation results and analysis related to the response of the generators within a microgrid towards an accidental overload condition that will require some load shedding action. A microgrid overload can occur due to various reasons ranging from poor load schedule, inadequate switching of circuits within the microgrid, outage of one or more generators inside the microgrid, illegal load connections by some low voltage consumers, etc. It was observed that among the main factors that determine the survival of the microgrid during its transition from the grid connected mode to the islanded mode of operation are the size and type of the load connected (passive or dynamic load) as well as the length of time during which the unexpected load is connected. Models of a speed and voltage regulators of a diesel generator, and important for coping with the overload conditions are provided in the paper. The novelty of the work lies in the load shedding simulation and analysis of the specific generators studied herein, regarding that in many countries the microgrid technology is seen as an important alternative towards the ever increasing load demand and also to assist the system during periods of blackout.

关键词： Distributed Generation Islanded Operation Mode Load Shedding microgrid systems

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