An Overview on the Reliability of Modern Power Electronic Based Power Systems

Abstract

Renewable energy resources are becoming the dominating element in power systems. Along with de-carbonization, they transform power systems into a more distributed, autonomous, bottom-up style one. We speak of Smart Grid and Microgrid when distributed energy resources take over. While being a means to improve technical and financial efficiency, planning, operations, and carbon footprint, it is these new technologies that also introduce new challenges. Reliability is one of them, deserving a new way of describing and assessing system and component reliability. This paper introduces a new reliability framework that covers these new elements in modern power systems. It can be seen that reliability assessment of modern power systems also requires introducing local reliability concepts as well as incorporating different electromagnetic/mechanical stability issues.

System-Level Design for Reliability and Maintenance Scheduling in Modern Power Electronic-Based Power Systems

“…These uncertainties may be induced by planned outages, e.g., for maintenance, or unplanned outages such component failure, short circuits, and so on. Therefore, a power system should have enough capacity to supply the customers, and it should be able to respond to any sudden changes [58]. These abilities are measured by various indicators, which are generally categorized as power system adequacy and security [58].…”

“…Therefore, a power system should have enough capacity to supply the customers, and it should be able to respond to any sudden changes [58]. These abilities are measured by various indicators, which are generally categorized as power system adequacy and security [58]. The most popular index used for evaluating the reliability of power systems is Loss OF Load Expectation (LOLE) [59]- [61].…”

A Review on IGBT Module Failure Modes and Lifetime Testing

“…According to field experience, power electronic converters are considered a weak link that has significant influence on overall electrical system reliability [1,2]. In wind farms [3][4][5], power electronic converters used for energy conversion are responsible for about 13% of the failures and 18% of the downtime.…”

Lifetime Estimation of Grid-Connected Battery Storage and Power Electronics Inverter Providing Primary Frequency Regulation

“…T HE rising of renewable energy-based generation plants is shifting the electrical energy production from large synchronous generators to Power Electronics (PE) interfaced distributed plants. Consequently, the inertia of the system and its regulating power, traditionally provided by large rotating synchronous generators, will likely decrease [1], [2]. System operators are then in need of finding new balancing resources.…”