Reliability analysis is an important part of power system planning and operation. Considering all events and scenarios which can have a significant impact on the reliability of supply to customers can lead to a large computational burden. Scenario reduction techniques can alleviate some of these...
This paper introduces an innovative approach for the optimal utilization of flexible resources in voltage control, thereby mitigating the need for immediate power system upgrades in distribution grids facing voltage challenges. The proposed methodology focuses on pre-planning the activation of the...
In this paper we present an ongoing project in which the high voltage distribution grid of Elvia, a Norwegian DSO, with 3200 km of lines, will be monitored using overhead line sensors (Heimdall Power’s Neurons) and advanced software (Heimdall Cloud). Result from the first two months of monitoring of...
The electrification of society increases the strain on the existing electricity infrastructure. Grid tariffs can be used to incentivize lowered customer peak electricity demand and more efficient usage of existing energy infrastructure, thus mitigating costly upgrades of the electricity grid. A...
The development of distributed energy resources calls for shift in grid tariff design. Most DSOs in Norway implemented a hybrid grid tariff with both a capacity and a time-of-use energy term. In this paper, we have investigated the redistributional effects to determine whether any consumer groups...
This paper aims to investigate the economic viability of line upgrades, battery energy storage systems (BESS), optimized active photovoltaic (PV) power curtailment, and the utilization of reactive power from PV inverters to handle overvoltage problems in distribution grids. To do this, we propose a...
In offshore oil and gas production gas turbines are used for both power production and to provide process heat. CO2 emissions from the gas turbines accounts for about 25 % of the total Norwegian emissions and installing a bottoming cycle to produce power by recovering heat from the gas turbine...
Load and temperature data collected from an onshore wind farm export cable during a nine-month period was used to test and evaluate models for transient calculations of cable temperatures. The temperature data was measured using a distributed temperature sensing (DTS) system. A single location along...
State-space models are useful for a wide range of power system analyses relying on eigenvalue-based small-signal stability assessment. However, state-space models for detailed analysis of power converter dynamics are typically not provided to third-parties due to intellectual property (IP) concerns...
This work is a preliminary study of how incidents, near misses and deviations within automated systems are currently detected, registered and, if appropriate, reported to the Petroleum Safety Authority Norway (PSA), as well as the roles of various actors in the processing of data from such...
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...
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...