Title page for ETD etd-05132006-171736

Type of Document

Thesis

Author

Ding, Zhiping

URN

etd-05132006-171736

Title

Realtime Dynamic Load Shedding for Shipboard Power Systems

Degree

Master of Science

Department

Mechanical Engineering, Department of

Advisory Committee

Advisor Name	Title
David A. Cartes	Committee Chair
Cesar Luongo	Committee Member
Emmanuel G. Collins	Committee Member

Keywords

Load Shedding
Shipboard Power System
Realtime Digital Simulation
Dynamic Prioritization
Expert System
Analytic Hierarchy Process

Date of Defense

2006-04-14

Availability

unrestricted

Abstract

The electric power systems in U.S. Navy ships supply energy to sophisticated systems for weapons, communications, navigation and operation. The reliability and survivability of the shipboard power systems (SPS) are critical to the mission of a ship, especially under battle conditions. As part of the shipboard power system may become unavailable due to attack, emergency control actions such as load shedding should be taken for the ship to survive.
A load shedding system disconnects selected loads from a power system to keep the remaining portion of the system operational. Current SPS load shedding is normally provided in several stages or levels, which only shed loads based on fixed priority categories [1]. Moreover, generally the loads are shed manually. This thesis presents a new realtime dynamic load shedding scheme for Navy SPS. In the proposed load shedding scheme, analytic hierarchy process (AHP) is adopted for dynamically prioritizing loads based on changing priorities of loads and system critical natures of loads. AHP is a multicriteria decision making methodology that produces a ranking among various alternatives. The load shedding scheme maximizes various system benefits and minimizes load curtailment. Expert system is used to facilitate the load shedding decision-making process. An illustration of the developed load shedding scheme (LSS) is presented. The proposed LSS is applied to a test SPS simulated in a Real Time Digital Simulator® (RTDS).

Files

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	ZhipingThesis_finalversion.pdf	1.58 Mb	00:07:18	00:03:45	00:03:17	00:01:38	00:00:08