Power is rapidly becoming the primary design constraint for systems ranging from server computers to handhelds. In this paper we study microarchitecture-level coupled power and thermal simulation considering dynamic and leakage power models with temperature and voltage scaling. We develop an accurate temperature-dependent leakage power model and efficient temperature calculation, and show that ...

The virtual power plant (VPP) can aggregate small-scale distributed resources to provide flexibility for the transmission system. provision capability of VPP is restricted by technical operating limits distribution system which are connected. To facilitate while securing operation local system, this paper leverages dynamic line rating (DLR) enlarge region. region defined as allowable range acti...

Effective exploitation of overhead transmission lines needs reliable and precise dynamic line rating forecasting. High-accuracy forecasting, in particular, is an important short-term method for coping with grid congestion, enhancing stability, accommodating high renewable energy penetration. Due to the non-stationarity stochasticity meteorological variables, a single model often not sufficient ...

In this paper, we develop an accurate dynamic thermal management DTM approach considering the interdependency of temperature and leakage. By modeling the leakage-thermal interdependence as a quadratic polynomial, we develop accurate analytical equations that capture the thermal transient. We also identify all the situations in which thermal runaway would occur, which should be avoided by DTM. W...

First posted June 8, 2022 For additional information, contact: Director, Central Midwest Water Science Center U.S. Geological Survey405 North Goodwin Urbana, IL 61801Contact Pubs Warehouse Ratings are used for a variety of reasons in water-resources investigations. The simplest rating relates discharge to the stage river. From pure hydrodynamics perspective, all rivers and streams have some for...

this research compared ratings of task performance and contextual performance from three different sources: self, peer, and supervisor. participants were service industry employees in the service industries in yogyakarta, indonesia. a sample of 146 employees and 40 supervisors   from the service industries provided ratings of task performance and contextual performance. the results indicated th...

Power transformers are one of the most costly assets in power grids. Due to increasing electricity demand and levels distributed generation, they more often loaded above their rated limits. Transformer ratings traditionally set as static limits, a controlled environment with conservative margins. Through dynamic transformer rating, rating is instead adapted actual working conditions transformer...

Dynamic line rating (DLR) models the transmission capacity of overhead lines as a function of ambient conditions. It takes advantage of the physical thermal property of overhead line conductors, thus making DLR less conservative compared to the traditional worst-case oriented nominal line rating (NLR). Employing DLR brings potential benefits for grid integration of variable Renewable Energy Sou...

Electricity generation from renewable energy sources can be constrained by the static thermal rating of existing overhead lines. A potential solution is dynamic line rating based on the line’s temperature. The conductor temperature can be calculated from the line’s resistance, if measured accurately and in real-time. In this paper three suggested methods for impedance determination from synchro...