Internal hydro- and wind portfolio optimisation in real-time market operations

RENEWABLE ENERGY

卷:173

Article

Riddervold, Hans Ole^1,2  Aasgard, Ellen Krohn³  Haukaas, Lisa²  Korpas, Magnus¹ 

[1] NTNU, Trondheim, Norway

[2] Norsk Hydro AS, Oslo, Norway

[3] SINTEF Energy Res, Trondheim, Norway

关键词: Wind power;    Reservoir hydro;    Marginal cost;    Balancing;    Intraday;   

DOI  :  10.1016/j.renene.2021.04.001

来源: Elsevier

【 摘 要 】

In this paper aspects related to handling of intraday imbalances for hydro and wind power are addressed. The definition of imbalance cost is established and used to describe the potential benefits of shifting from plant-specific schedules to a common load requirement for wind and hydropower units in the same price area. The Nordpool intraday pay -as-bid market has been the basis for evaluation of imbalances, and some main characteristics for this market has been described. We consider how internal handling of complementary imbalances within the same river system with high inflow uncertainty and constrained reservoirs can reduce volatility in short-term marginal cost and risk compared to trading in the intraday market. We have also shown that the imbalance cost for a power producer with both wind and hydropower assets can be reduced by internal balancing in combination with sales and purchase in a pay as-bid intraday market. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

【 授权许可】

Free