Selection of Maintenance Strategy for MVDC Converter Station Using Reliability Sensitivity Analysis

Abstract

The Medium Voltage Direct Current (MVDC) system is gaining attention as a solution to the power supply instability issues arising from the growth of renewable energy sources. MVDC networks are directly connected to the load, leading to a significant cascading effect in the event of a power outage. Therefore, ensuring safety through asset management is required. In this paper, a maintenance strategy is selected using sensitivity analysis at the component level. The structure of components and systems is understood through Functional Block Diagram. And reliability indicators are calculated based on their relationships. Based on repair time, the importance is ranked through the sensitivity analysis of the failure rate and availability. A maintenance strategy is established based on the top rank. The proposed sensitivity analysis method is compared through cost analysis with Time-Based Maintenance and Reliability Centered Maintenance application cases. Copyright © The Korean Institute of Electrical Engineers.