Modeling wind power curtailment with increased capacity in a regional electricity grid supplying a dense urban demand

Abstract

Many US states have targets for vastly expanding electricity generation from renewable resources. As installed wind capacity increases, several factors can lead to the curtailment of potential wind-generated electricity. Reliably estimating wind power outputs remains a challenge given the dearth of available hub height-altitude wind speed data and measured outputs from newer turbines. A methodology to make such estimates with large increases in wind capacity is described. A regional wind power model, including subroutines for evaluating Statewide grid constraints, and a linear program to solve the model were developed to assess capacity factors and curtailments with deep penetration of wind power into an existing grid under several constrained scenarios implied by demand, baseload generation and transmission. Actual zonal demand and interzonal transmission limits were used for the New York State electricity grid, which has significant potential for wind power mostly distant from the concentrated electricity demand in and around New York City. 0.015% of the total number of 5-minute demand values over the 6-year analysis period. As such, any assumptions required to complete the zonal time series are not expected to have a significant impact on the results of the analysis.

Wind power and photovoltaic power: How to improve the accommodation capability of renewable electricity generation in China?

“…There is an economic downturn all over the world, while there is excess capacity of energy in China. 2 There is no balance between resource endowment and regional economic development, so the layout causes the limit of power accommodation capability. 3 The power supply structure is unbalanced, and the amount of centralized renewables generation is much more than that of distributed one.…”

“…The ability of thermal power's peak load regulation for renewable power supply is limited. 2 Power grid transmission channel is difficult to meet the development needs of renewable power. 3 Traditional power grid dispatching mode cannot adapt to the development of new energy sources.…”

“…The wind power and the solar power in gross generating capacity grow rapidly all over the world 1,2 with the growth rate changing from 0.2% in 2000 to 3.8% in 2014. In 2014, the total accommodation capacity of new energy power generation achieved 892.1 TWh, where the accommodated wind power generation was 706.2 TWh and the accommodated photovoltaic (PV) power generation was 185.9 TWh.…”

Renewable Energy in Urban Areas: Worldwide Research Trends

“…The installation of wind turbines in cities is a simple and eco-friendly technology; since a mini wind generator has a low maintenance cost, is very reliable and has a minimum environmental impact. It also works with low intensity winds, does not need the creation of new electrical infrastructures and has a high efficiency index, since it avoids the losses that occur in the transport and distribution electricity grids [37]. A Chinese home, for example, would currently need a 1 kW turbine to generate all the energy needed for a year; a European house would not need more than 4 kW, and an American home would need roughly a 10 kW wind turbine to cover an average consumption of 11,500 kWh of annual electricity [38].…”

Optimization of hydrogen yield of a high-temperature electrolysis system with coordinated temperature and feed factors at various loading conditions: A model-based study

“…Keywords: High-temperature electrolysis, system optimization, auxiliaries coordination, optimal operating state Nomenclature Chemical The integration of renewable generation sources is faced with formidable challenges because of their undesirable intermittence caused by uncontrollable factors [1]. By producing fuel gases with fluctuating electricity and storing the renewable energy that may otherwise be curtailed, the power-to-gas (P2G) approach presents an attractive solution for meeting the increasing energy demand in an ecofriendly manner [2,3].…”