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This paper presents an estimator-based voltage-predictive control strategy for ac islanded microgrids, which is able to perform voltage control without any communication facilities. The proposed control strategy is composed of a network voltage estimator and a voltage-predictive controller for each distributed generator, where the voltage estimator serves as an essential tool to obtain network voltages...
This paper presents a communication-less distributed voltage control strategy for a multi-bus AC islanded microgrid. First, a Kalman Filter-based network voltage estimator is proposed to obtain voltage responses without communication links in the presence of load disturbances. Then, a voltage optimal controller using MPC (Model Predictive Control) are developed to implement voltage optimal control...
State monitoring and analysis of distribution systems has become an urgent issue, and state estimation serves as an important tool to deal with it. In this paper, a Kalman-Filter-based state estimation method for a multi-bus islanded microgrid is presented. First, an overall small signal model with consideration of voltage performance and load characteristic is developed. Then, a Kalman-Filter-Based...
This paper presents a conceptual architecture for Micro Grid. The approach utilizes the strategy of control and coordination from Role Autonomous Decentralized System (RoADS) for autonomous operation of a Micro Grid. This architecture aims to optimize the generation production of local distributed generators. Case studies have been performed on a typical low voltage feeder with several distributed...
This paper presents a discussion on architecture-oriented assurance technology in Micro grid. We analyzed the characteristic of Micro grid from evolutional view, and proposed the concept of architecture-oriented assurance technology in Micro grid from the technology evolution and policy evolution. Technology evolution contained Function Evolution, Role Changing Autonomy and Role Coordination. Policy...
During the past two decades, autonomous decentralized system (ADS) has resolved online extensibility, online maintenance and fault tolerance of system, and realized dynamic extension of system in node level and module level. However, with the developing of research on ADS, autonomously expression of system function is needed for achieving evolutional ability in function level. In this paper, we analyze...
Minimizing energy consumption is an important challenge in wireless sensor networks. The proposal of reactive on-demand philosophy where routes are established only when required is a major step. But it still needs to keep information about routes. The constantly changing topology, however, makes the routing state upkeep difficult. Thus multi-path routing is usually used for robust data delivery....
To meet users' multi-service requests under dynamic and heterogenous environment with high-assurance, the autonomous network-based integration system based on faded information field (FIF) has been proposed, which permits to actively integrate the correlated information services according to the current situation of the system. However, the increase in the total number of user requests and changes...
Minimizing energy consumption is an important challenge in wireless sensor networks. A series of topology control algorithms conserve energy by turning off redundant nodes while preserving the fidelity of network applications. Their communication connectivity, however, is proved under the prerequisite that nodes are uniformly distributed. Due to the cost restriction, mobility and destructions from...
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