Traditionally, regional high voltage distribution grid planning relies on conservative line ratings and present value calculations to evaluate alternative grid development plans, as well as strict adherence to the N−1 criterion. However, it is now becoming possible to use dynamic line rating (DLR...
Amidst the growing significance of renewable energy, this paper examines the asymmetric effects of renewable energy on electricity prices and transmission flows in the Nordics using hourly electricity data. Employing a novel panel asymmetric fixed-effects method, we quantify the non-linear impact of...
This paper presents a control strategy based on dual-grid-forming applied to modular multilevel converters. The goal is to ensure seamless transitions between grid-connected and island operations in ac microgrids. This control strategy is tested in a case where a back-to-back multilevel converter...
In this paper a platform for developing and testing Wide Area Monitoring, Protection and Control (WAMPAC) applications is presented. The fundamental idea is that individual applications operate as microservices. Each application access and process data (e.g. data from Phasor Measurement Units) and...
The operation of converters interconnecting ac and dc grids in future inertia-free and weak networks poses significant challenges. Modular multilevel converters applying dual grid-forming controls are able to effectively synchronize to weak grids and control the dc voltage levels simultaneously...
Neglecting service restoration in reliability analyses can lead to overestimation of energy not supplied (ENS) due to contingencies, and subsequently also the associated interruption costs. Estimating accurate interruption costs is of high importance as it serves as input into power system operation...
In this paper, we use load and price data to demonstrate probabilistic operational planning on the power system model used by the Norwegian TSO. Moreover, we compare the probabilistic and the classical deterministic approach where the probabilistic approach gives lower operational costs by allowing...