Dual–voltage Micro-electricity Grids

Cascading Failures in AC Electricity Grids

Sudden failure of a single transmission element in a power grid can induce a domino effect of cascading failures, which can lead to the isolation of a large number of consumers or even to the failure of the entire grid. Here we present results of the simulation of cascading failures in power grids, using an alternating current (AC) model. We first apply this model to a regular square grid topol...

Valuing dedicated storage in electricity grids

Long-range response in ac electricity grids.

Local changes in the topology of electricity grids can cause overloads far away from the disturbance [D. Witthaut and M. Timme, Eur. Phys. J. B 86, 377 (2013)EPJBFY1434-602810.1140/epjb/e2013-40469-4], making the prediction of the robustness against changes in the topology-for example, caused by power outages or grid extensions-a challenging task. The impact of single-line additions on the long...

Valuing dedicated storage in electricity grids

The report summarises the latest independent scientific evidence on the use of dedicated electricity storage in electricity grids, explains potential impacts on electricity markets of recent and expected developments in storage technologies, and highlights what could be done through electricity market design, energy policy and investment support to ensure that grid-connected storage is used eff...

Storage Management in Modern Electricity Power Grids

This letter introduces a method to manage energy storage in electricity grids. Starting from the stochastic characterization of electricity generation and demand, we propose an equation that relates the storage level for every time-step as a function of its previous state and the realized surplus/deficit of electricity. Therefrom, we can obtain the probability that, in the next time-step: (i) t...