Control reconfiguration

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

Optimal Distribution Feeder Reconfiguration for Reliability Improvement Considering Uncertainty

Abstract: This paper proposes a new method to improve the reliability of the distribution system using the reconfiguration strategy. In this regard, a new cost function is defined to include the cost of active power losses of the network and the customer interruption costs simultaneously. Also, in order to calculate the reliability indices of the load points, the reconfiguration technique is considered as a failure-rate reduction strategy. Regarding the reliability cost, the composite customer damage function is employed to find the customer interruption cost data. Meanwhile, a powerful stochastic framework based on a two- point estimate method is proposed to capture the uncertainty of random parameters. Also, a novel self-adaptive modification method based on the clonal selection algorithm is proposed as the optimization tool. The feasibility and satisfying performance of the proposed method are examined on the 69-bus IEEE test system.

Minimal loss reconfiguration using genetic algorithms with restricted population and addressed operators: real application

Abstract: This paper proposes and evaluates a method that improves the adaptability and efficiency of genetic algorithms (GAs) when applied to the minimal loss reconfiguration problem. This research reduces the searching space (population) when a new codification strategy and novel genetic operators, called accentuated crossover and directed mutation, are used. This allows a drastic reduction of the computational time and minimizes the memory requirements, ensuring a efficiency search when compared to current GA reconfiguration techniques. The reduced population is created through the branches that form "system loops." This means that almost all individuals created for the GA are feasible (radial networks) generating topologies that can only be limited by the system's operational constraints. The results of the proposed reconfiguration method are compared with other techniques, yielding smaller or equal power loss values with less computational efforts.

System and method for modifying membership in a clustered distributed computer system and updating system configuration

Abstract: Multiple nodes can concurrently gain membership in a cluster of nodes of a distributed computer system by broadcasting reconfiguration messages to all nodes of the distributed computer system. In response to a reconfiguration request resulting from a node petitioning to join a cluster or a node leaving the cluster, each node determines to which nodes of the distributed computer system the node is connected, i.e., which are sending reconfiguration messages which the node receives. In addition, if multiple nodes fail substantially simultaneously, each node which continues to operate does not receive a reconfiguration message from each of the failed nodes and the failed nodes are omitted from the proposed new cluster. Thus, multiple simultaneous failures are processed in a single reconfiguration. Each of the member nodes of the proposed cluster determine the membership of the proposed cluster and broadcast a reconfiguration message to all proposed member nodes and collects similar messages. If all reconfiguration messages agree, the proposed cluster is accepted. In the case in which one or more nodes leave the cluster, quorum is established in the new cluster relative to the old cluster.

High performance self modifying on-the-fly alterable logic FPGA, architecture and method

Abstract: A technique for configuring arrays of programmable logic cells, including those associated with FPGA devices, through a novel DRAM-based configuration control structure that enables not only "on-the-fly" alterable chip and similar device reconfigurations, but, where desired, self-modifying reconfigurations for differing functionalities of the devices, eliminating current serious reconfigurability limitations and related problems, while providing significantly enhanced system performance at low cost. A large amount of memory is available internal to the FPGA and is accessed with a small number of pins such that the reconfiguration time is, for example, four orders of magnitude faster than the traditional approaches and at notably low cost.

System and method for dynamically performing resource reconfiguration in a logically partitioned data processing system

Abstract: A dynamic reconfiguration request for a change in a system's physical configuration is transmitted from a configuration controller to a hypervisor controlling operating systems executing in one or more partitions of the system. The hypervisor translates the physical reconfiguration request into a request for reconfiguration of logical resources known to the operating systems, first verifying it against an installation policy, and passes the requests to the operating systems in the partitions. The operating systems perform logical reconfiguration, then request physical reconfiguration of the hypervisor. The hypervisor initiates the physical reconfiguration through the configuration controller.