Topology of the generator bus in a warship integrated power system (original) (raw)

Techniques of network reconfiguration for service restoration in shipboard power system: A review

Australian Journal of Basic and Applied Sciences, 2010

The shipboard power system supplies energy to sophisticated systems for weapons, communications, navigation, and operation. After a fault is encountered, reconfiguration of a shipboard power system becomes a critical activity that is required to either restore service to a lost load or to meet some operational requirements of the ship. Reconfiguration refers to changing the topology of the power system in order to isolate system damage and/or optimize certain characteristics of the system related to power efficiency. When finding the optimal state, it is important to have a method that finds the desired state within a short amount of time, in order to allow fast response for the system. Since the reconfiguration problem is highly nonlinear over a domain of discrete variables, various techniques have been proposed by the researchers. The main tasks of this paper include reviewing the shipboard power system characteristics, studying and reviewing shipboard power system integrated protection, shipboard power distribution systems and typical loads of shipboard power system. A variety of techniques used in previous works have been explained in methodologies review. Many criteria and concepts are used as the basis for consideration in order to achieve the desired objectives.

Shipboard Power Systems Reconfiguration : A Compared Analysis of State-Ofthe-Art Approaches

2017

The Shipboard Power System (SPS) supplies power to navigation, communication, operation and critical systems. The capability of facing single or multiple faults is a mandatory issue for any vessel. This paper reports a systematic comparison on SPS reconfiguration methods, where most recent contributions to the field have been classified according to taxonomy of criteria, such as: reconfiguration techniques, reconfiguration sub-problems, and characteristics of the electrical layer. The reconfiguration procedure should be timely in restoring power in faulted areas of the ship, also to avoid subsequent cascade failures; the reconfiguration sub-problems involve priority definition among loads and operations, strongly depending from the electrical layers and the fault diagnosis methodology; moreover, reconfiguration techniques include several different control architectures and load priority schemas. Literature results encompass several case studies, and employed methods have been deeply...

New Electric Shipboard Topologies for High Resiliency

—All-electric ships commissioned for military use must survive any physical attack resulting in short-circuit faults that lead to service interruption. Unlike previous works on improving resiliency, this paper seeks to design new topologies by understanding the relationship between the resiliency and structural topology of a shipboard power system (SPS). Resiliency is evaluated on the basis of total load served in a network following an attack which causes maximum disruption in the network. The worst-case attack is identified using a bi-level and a mixed integer linear programming (MILP) framework. This method is employed to analyze the resiliency of similarly sized nominal SPS topologies (in terms of load and generator ratings). Breaker-and-a-half (BAAH) and ring bus topologies are determined to be more resilient as they can survive up to 8 simultaneous worst-case attacks. Based on the study of structural dependency of resiliency, two new topologies are designed that can survive up to 14 worst-case attacks each. It is to be noted that the new topologies are designed with the same number of circuit breakers, DC buses and lines as the nominal topologies.