Carlo Brancucci Martinez-Anido

Quantifying the Economic and Grid Reliability Impacts of Improved Wind Power Forecasting

Wind power forecasting is an important tool in power system operations to address variability and uncertainty. Accurately doing so is important to reduce the occurrence and length of curtailment, enhancing market efficiency, and improving the operational reliability of the bulk power system. This research quantifies the value of wind power forecasting improvements in the IEEE 118-bus test system as modified to emulate the generation mixes of Midcontinent, California, and New England independent system operator balancing authority areas. To measure the economic value, a commercially available production cost modeling tool was used to simulate the multitimescale unit commitment (UC) and economic dispatch process for calculating the cost savings and curtailment reductions. To measure the reliability improvements, an in-house tool, Flexible energy scheduling tool for integrating variable generation, was used to calculate the systems area control error and the North American Electric Reliability Corporation Control Performance Standard 2. The approach allowed scientific reproducibility of results and cross validation of the tools. A total of 270 scenarios were evaluated to accommodate the variation of three factors: generation mix, wind penetration level, and wind forecasting improvements. The modified IEEE 118-bus systems utilized 1 year of data at multiple time scales, including the day-ahead UC, 4-h-ahead UC, and real-time dispatch. The value of improved wind power forecasting was found to be strongly tied to the conventional generation mix, existence of energy storage devices, and the penetration level of wind energy. The simulation results demonstrate that wind power forecasting brings clear benefits to power system operations.

An Extended IEEE 118-Bus Test System With High Renewable Penetration

This article describes a new publicly available version of the IEEE 118–bus test system, named NREL-118. The database is based on the transmission representation (buses and lines) of the IEEE 118-bus test system, with a reconfigured generation representation using three regions of the US Western Interconnection from the latest Western Electricity Coordination Council (WECC) 2024 Common Case [Transmission expansion planning home and GridView WECC database]. Time-synchronous hourly load, wind, and solar time series are provided for one year. The public database presented and described in this manuscript will allow researchers to model a test power system using detailed transmission, generation, load, wind, and solar data. This database includes key additional features that add to the current IEEE 118-bus test model, such as the inclusion of ten generation technologies with different heat rate functions, minimum stable levels and ramping rates, GHG emissions rates, regulation and contingency reserves, and hourly time series data for one full year for load, wind, and solar generation.

Are cross-border electricity transmission and pumped hydro storage complementary technologies?

The aim of this paper is to analyse the degree to which cross-border electricity transmission and pumped hydro storage substitute or complement each other. The impacts of these two technical assets on annual dispatch costs, curtailment of variable renewable energy sources (RES) and CO2 emissions, as well as their impacts on one another, are analysed in a power system with a high RES penetration. EUPowerDispatch, a minimum cost dispatch model of the European power system, is used to compare different scenarios with varying cross-border electricity transmission and hydro pumping capacities. The results show that increasing cross-border transmission capacity or hydro pumping capacity reduces annual dispatch costs, RES curtailment needs and CO2 emissions. The study concludes that cross-border transmission and hydro pumped storage substitute one another and that under certain conditions they can be considered as complementary technologies.

Framing new threats: the internal security of gas and electricity networks in the European Union

This Handbook brings together energy security experts to explore the implications of framing the energy debate in security terms, both in respect of the governance of energy systems and the practices associated with energy security.

Annually and monthly resolved solar irradiance and atmospheric temperature data across the Hawaiian archipelago from 1998 to 2015 with interannual summary statistics

This article contains data and summary statistics of solar irradiance and dry bulb temperature across the Hawaiian archipelago resolved on a monthly basis and spanning years 1998–2015. This data was derived in association with an article titled “Consequences of Neglecting the Interannual Variability of the Solar Resource: A Case Study of Photovoltaic Power Among the Hawaiian Islands” (Bryce et al., 2018 [7]). The solar irradiance data is presented in terms of Direct Normal Irradiance (DNI), Diffuse Horizontal Irradiance (DHI), and Global Horizontal Irradiance (GHI) and was obtained from the satellite-derived data contained in the National Solar Radiation Database (NSRDB). The temperature data is also obtained from this source. We have processed the NSRDB data and compiled these monthly resolved data sets, along with interannual summary statistics including the interannual coefficient of variability.

Reserve Estimation in Renewable Integration Studies

In 2011, the International Energy Agency (IEA) reported that electricity from renewable sources accounted for 19.3% of the total world energy generation [1].