Control reconfiguration

About: Control reconfiguration is a research topic. Over the lifetime, 22423 publications have been published within this topic receiving 334217 citations.

Remote and partial reconfiguration of FPGAs: tools and trends

Abstract: This work describes the implementation of digital reconfigurable systems (DRS) using commercial FPGA devices. This paper has three main goals. The first one is to present the trend of DRS, highlighting the problems and solutions of each DRS generation. The second goal is to present in detail the configuration architecture of a commercial FPGA family allowing DRS implementation. The last goal is to present a set of tools for remote and partial reconfiguration developed for this FPGA family. Even though the tools are targeted to a specific device, their building principles may easily be adapted to other FPGA families, if they have an internal architecture enabling partial reconfiguration. The main contribution of the paper is the tool-set proposed to manipulate cores using partial reconfiguration in existing FPGA.

Distribution systems operation optimisation through reconfiguration and capacitor allocation by a dedicated genetic algorithm

Abstract: This study presents an efficient algorithm for optimisation of radial distribution systems by a network reconfiguration and capacitor allocation. An important outcome of the proposed approach is the cost savings related to purchasing new capacitor banks. Several reconfiguration and capacitor allocation methods can be found in the literature, but just a few approach the problem by a joint strategy. A modified, dedicated genetic algorithm-based approach has been successfully developed and implemented. It presents low computational effort and is able to find good quality configurations. Simulation results for a radial 69-bus and a radial, realistic 135-bus systems are presented and commented.

A multiagent based algorithm for ring-structured shipboard power system reconfiguration

Abstract: The shipboard power system (SPS) supplies energy to electric equipment on ships. It is critical for the system to be reconfigurable for the purpose of survivability and reliability. In earlier work, a decentralized approach using agents for a radial SPS reconfiguration is successfully developed. Each agent in this system communicates only with its immediate neighbors, which reduces the dependency on the system topology. However, a ring structure in the system leads to the problem of redundant information accumulation among the agents, making the information flow in the system unstable. In this correspondence, the authors propose a method, based on the use of the spanning tree algorithm in the IEEE 802.1d protocol, for an agent system to detect and break the ring structure in the system. Then, an algorithm for calculating the information flow without redundant information accumulation is put forward. Finally, the proposed methodology is illustrated through a test case on a simplified SPS.

Radiality Constraints for Resilient Reconfiguration of Distribution Systems: Formulation and Application to Microgrid Formation

Abstract: Network reconfiguration is an effective strategy for different purposes of distribution systems (DSs), e.g., resilience enhancement. In particular, DS automation, distributed generation integration and microgrid (MG) technology development, etc., are empowering much more flexible reconfiguration and operation of the system, e.g., DSs or MGs with flexible boundaries. However, the formulation of DS reconfiguration-related optimization problems to include those new flexibilities is non-trivial, especially for the issue of topology, which has to be radial. That is, the existing methods of formulating the radiality constraints can cause under-utilization of DS flexibilities. Thus, in this work, we propose a new method for radiality constraints formulation that fully enables the topological and some other related flexibilities of DSs, so that the reconfiguration-related optimization problems can have extended feasibility and enhanced optimality. Graph-theoretic supports are provided to certify its theoretical validity. As integer variables are involved, we also analyze the issues of tightness and compactness. The proposed radiality constraints are specifically applied to post-disturbance MG formation, which is involved in many resilience-oriented DS service restoration and infrastructure recovery problems. The resulting new MG formation model, which allows more flexible merge and/or separation of the sub-grids, etc., establishes superiority over the models in the literature. Demonstrative case studies are conducted on two test systems.