Joint Modelling of Wind Power and Hydro Inflow for Power System Scheduling

Larsen, Camilla Thorrud; Doorman, Gerard; Mo, Birger

doi:10.1016/j.egypro.2015.12.350

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…To account for correlations in time and between the variables in the multivariate time series, a vector auto-regressive model of order one (VAR(1)) was fitted to the data, assuming the seasonally adjusted data to be weekly stationary. VAR models have been found to give improved descriptions of inflow in systems with correlations between inflow and wind [48]. A general VAR(p) model is given in Eq.…”

Section: Markov Model and Scenarios Samplingmentioning

confidence: 99%

Implications of environmental constraints in hydropower scheduling for a power system with limited grid and reserve capacity

Schäffer

Korpås

Bakken

2023

Preprint

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The negative impacts of power systems on biodiversity have to be mitigated, while simultaneously ensuring affordable and secure electricity supply for the future. This may lead to trade-off situations where ecological, recreational or social needs are weighted against the need for flexible power supply. This paper explores the interaction between the security of electricity supply and environmental constraints on the operation of flexible hydropower plants in the Norwegian renewable-based power system. A long-term, stochastic scheduling model of a wind- and hydropower-dominated power system is used to assess the implications of environmental constraints and reserve capacity requirements in combination. The model is used for a representative case study where three types of environmental constraints are imposed on the operation of the hydropower plants in a region of the congested Norwegian power system. In addition, requirements for spinning and non-spinning reserve capacity have to be met. The case study results demonstrate varying impacts on the operation of the hydropower plants, curtailment of demand and provision of reserve capacity depending on the type of environmental constraint being imposed.

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Section: Markov Model and Scenarios Samplingmentioning

confidence: 99%

Implications of environmental constraints in hydropower scheduling for a power system with limited grid and reserve capacity

Schäffer

Korpås

Bakken

2023

Preprint

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“…Uncertainty is considered for inflow, wind power generation and electricity demand from households (temperature dependent). Serial-and cross-correlations in the stochastic variables are accounted for by the use of a vector auto-regressive model of order one (VAR(1)) to draw scenarios [18]. Each scenario consist of 52 weekly values for each of the stochastic variables.…”

Section: A Representation Of Uncertaintymentioning

confidence: 99%

Optimal Operation of Hydro-Dominated Power Systems with Environmental Constraints

Schäffer

Korpås

Helseth

2022

2022 18th International Conference on the European Energy Market (EEM)

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This paper studies the operation of a small renewable and hydro-dominated power system when introducing environmental constraints. The risk of rationing and the local price formation is investigated using a stochastic, cost-minimising optimisation model for long-term operation of a regional renewable power system with reservoir hydropower. The model is applied to a case study based on Norwegian hydropower plants with state-dependent, environmental constraints on reservoir management. The results demonstrate the reduced operational flexibility of the hydropower system and an increased risk of rationing, when the environmental constraint is imposed. In some of the case runs, the long-term management of the constrained reservoir is found to change considerable, but is also shown to be sensitive to the value of lost load, the transmission capacity and the total wind power generation.

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“…A limited range of additional services aimed at the hydropower sector are offered by different semi-commercial vendors. For example, SINTEF Energy Research have developed a market simulation model, to support hydro scheduling in competitive electricity markets [56], where information/forecasts/projections of, e.g., wind and hydropower, are drawn from time series data. A similar tool and associated services are offered by vendor Thomson Reuters Point Carbon, who have developed a system based on 23 regional hydrological models [57].…”

Section: Current Climate Service Suppliersmentioning

confidence: 99%

Climate Services for Renewable Energy in the Nordic Electricity Market

Halsnæs

Bay

Kaspersen

et al. 2021

Climate

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To limit global warming to less than 2 °C requires a low-carbon transition with very large shares of renewables. Options such as wind, solar and hydro are influenced by both short and longer-term weather and climate variability. While still subject to natural and anthropogenic climate forcing and fluctuating energy prices, water reservoirs can dually operate as storage and production facilities and serve to balance the more volatile production capacity from solar and wind. This paper assesses the dynamics and demands of the hydro-dominated Nordic electricity system and market and identifies untapped potential for climate services based on a combination of literature-based research, documented stakeholder needs and data sources on historical and future conditions. A critical need for both improving the appropriateness and reliability of existing climate services and for developing new tailored solutions for a broader group of stakeholders from the renewable energy sector in the Nordics is observed. The quantification of uncertainties related to short-term weather forecasts and longer-term climate predictions is also found to be important for minimizing the financial risk in relation to systems management and to overall investments in renewable energy.

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Joint Modelling of Wind Power and Hydro Inflow for Power System Scheduling

Cited by 9 publications

References 11 publications

Implications of environmental constraints in hydropower scheduling for a power system with limited grid and reserve capacity

Implications of environmental constraints in hydropower scheduling for a power system with limited grid and reserve capacity

Optimal Operation of Hydro-Dominated Power Systems with Environmental Constraints

Climate Services for Renewable Energy in the Nordic Electricity Market

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