Energy storage must play a part in a future world powered by intermittent low-carbon sources such as wind and solar power. It is often taken for granted that grid-scale battery storage is too expensive unless offering multiple ancillary services to the electrical grid, rather than just absorbing and later exporting renewable energy that would otherwise be curtailed. This belief is confirmed and...

A well-known stopping rule in adaptive mastery testing is to terminate the assessment once the examinee’s ability confidence interval lies entirely above or below the cut-off score. This article proposes new procedures that seek to improve such a variable-length stopping rule by coupling it with curtailment and stochastic curtailment. Under the new procedures, test termination can occur earlier...

With a sample survey (N = 266) of elderly adults residing in six housing developments in Massachusetts, we used logistic regression to: (a) identify covariates of fear of falling among all subjects and (b) identify covariates of activity curtailment among the subset of subjects who were afraid of falling. Fifty-five percent of respondents were afraid of falling; of those who were afraid, 56% ha...

Retrieving false information can have serious consequences. Sleep is important for memory, but voluntary sleep curtailment is becoming more rampant. Here, the misinformation paradigm was used to investigate false memory formation after 1 night of total sleep deprivation in healthy young adults (N = 58, mean age ± SD = 22.10 ± 1.60 years; 29 males), and 7 nights of partial sleep deprivation (5 h...

In a competitive electricity market traditional demand side management options offering customers curtailable service at reduced rates are replaced by voluntary customer responses to electricity spot prices. In this new environment, customers wishing to ensure a fixed electricity price while taking advantage of their flexibility to curtail loads can do so by purchasing a forward electricity con...

In regions with high penetration of Distributed Energy Resources (DER), grid congestion is mostly caused by power feed-in generators. this context, conventional approaches for solving the problems are Active Power Curtailment (APC) DER and reinforcement. wake increased generation, it not only interest how to obtain reinforcement, but also consider APC during planning. The challenge such plannin...

Seismic events and aftershocks can cause devastating impacts on overground underground energy system infrastructure. This article designs a novel approach to restore functionality in response seismic stresses by using coordinated dynamic reconfiguration operation. First, the impact of infrastructure is evaluated, considering critical components, including electricity lines, substations, gas pip...

Together with quality power supply criteria, Composite Power System (CPS) reliability is also one of the important aspects deciding security CPS for a given load demand. In current paper, evaluated. The Newton Raphson (NR) approach implemented in Simulation Engineering (PSSE) software to take into account, flows, then available points, evaluate CPS. NR Method was by considering different contin...