Reconfiguration and Stability

2005-2006

1) Project Title: Intelligent Agents and Reconfiguration
Investigator: Noel Schulz

Objectives: This is a continuation of initial intelligent agent work being done at MSU. Research work has developed a low-level agent system that works for small shipboard systems. Activities are underway to investigate the information that can be passed as well as effective communication techniques. For the FY 06 efforts, we will expand the agent work to larger shipboard power systems and will investigate the effectiveness of the agents after reconfiguration of the power system as well as damage to the communication capabilities.

Integration efforts will involve combining JADE with the VTB system for the agent integration into the process. Integration of this with real-time VTB will also be investigated.

2) Project Title: Reconfiguration, Islanding and Distributed Generation
Investigator: Noel Schulz

Objectives: This is a continued effort relating to reconfiguration, islanding, distributed generation and optimization. Work through FY05 has been to set up the tools to allow for the unbalanced distribution power flow and analysis related to reconfiguration including islanding. After initial activities related to the size and placement of distributed generation on small shipboard power systems, these activities need to be extended to larger, more realistic ship systems. Of particular importance will be developing alternative reconfiguration schemes depending on the current ship mission status. Also advanced schemes for intentional islanding for the larger systems will be analyzed. After initial system analysis, various topologies will be evaluated to quantify their characteristics for handling faults, reconfiguration and restoration.

2006-2007

1) Project Title: Reconfiguration of the Power System and Protection System
Investigators: Noel Schulz, Anurag Srivastava, Jimena Bastos

Objectives: This project will work to integrate the tools developed previously for reconfiguration of the power system to evaluate different topologies to identify figures of merit related to reconfiguration and contingency analysis including distributed generation sources and intentional islanding strategies. These tools included distributed and centralized approaches. Additionally a comparison of the tools will provide heuristics on the appropriate timing and applications for particular reconfiguration strategies.

Besides the reconfiguration of the power system, additional work will be done to look at reconfiguration of the control systems, in particular the protection system. Phase II of the adaptive protection algorithm will be developed to allow analysis of the new setting required for protective devices. Additionally we will investigate the possibility of adaptive protection devices that allow the protection devices to reconfigure into different protection strategies depending on the power system configuration.

2) Project Title: Voltage Stability Assessment for Electric Ship
Investigators: Anurag K Srivastava, Noel Schulz

Objectives: Many times voltage stability becomes important in post contingency cases and a voltage stability limit is reached before system stability limits are predicted by conventional tools, such as Lyapunov theory. This project will come up with a fast algorithm to determine a voltage stability index for electric ship to show the system operating location compared to the voltage stability limit point. Accurate assessment of the voltage stability limit is important for setting up benchmarks for index based approach of voltage stability. This work will also involve developing a voltage stability tool to directly assess “distance to collapse” using continuation power flow.