Curtailment analysis for the Nordic power system considering transmission capacity, inertia limits and generation flexibility

Nycander, Elis; Söder, Lennart; Olauson, Jon; Eriksson, Robert

doi:10.1016/j.renene.2020.01.059

“…However, the expansion model was developed for an integrated power and natural gas system, while the need to minimize the resulting emissions from the model was not considered. The authors in [21], carried out curtailment analysis of the Nordic power system by setting a minimum inertia limit of 113GWs in the grid. Findings of their study reveal that considering the inertia requirement of the grid in planning will not lead to significant energy curtailment in the grid.…”

Section: Introductionmentioning

confidence: 99%

Optimal planning of Renewable energy generators in modern power grid for enhanced system inertia

Ayamolowo

¹

,

Manditereza²,

Kusakana³

2022

Technol Econ Smart Grids Sustain Energy

9

0

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In recent times renewable energy sources have become an integral part of the modern power grid. As a result, the overall system inertia of the grid has been reduced, thus leading to frequency instability issues such as fast rate of change of frequency. Thus, to compensate for the declining inertia, it is important to carefully select renewable energy generators (REGs) and energy storage systems (ESS) in order to ensure the stability of the power grid, while also controlling greenhouse gases emissions in line with environmental standards. Therefore, this paper proposes an optimal planning model of REGs and ESS, considering the inertia requirement of the grid. The objective function is formulated to minimize the cost of operation, emissions, and investment in new REGs and energy storage units while maximizing the system inertia. The model was developed as a mixed integer linear programming problem and solved using CPLEX solver in GAMS. Finally, the model was validated using a modified IEEE 9-bus system and compared under three scenarios. The results show that in scenario 3 where system inertia is considered in the presence of REGs and ESS, higher system inertia of 8.776 s was achieved at minimal emission and cost, which justifies the aim of the study.

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“…ATTERY energy storage systems (BESSs) have been deployed to meet the challenges from the variability and intermittency of the power generation from renewable energy sources (RESs) [1]- [3]. Without BESS, the utility grid (UG) operator would have to significantly curtail renewable energy generation to maintain system reliability and stability [4], [5]. In the case of wind energy, examples of non-fully utilized wind farms are provided in [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Design of Combined Stationary and Mobile Battery Energy Storage Systems

Hayajneh¹,

Zhang²

2021

Preprint

1

0

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To minimize the curtailment of renewable generation and incentivize grid-scale energy storage deployment, a concept of combining stationary and mobile applications of battery energy storage systems built within renewable energy farms is proposed. A simulation-based optimization model is developed to obtain the optimal design parameters such as battery capacity and power ratings by solving a multi-objective optimization problem that aims to maximize the economic profitability, the energy provided for transportation electrification, the demand peak shaving, and the renewable energy utilized. Two applications considered for the stationary energy storage systems are the end-consumer arbitrage and frequency regulation, while the mobile application envisions a scenario of a grid-independent battery-powered electric vehicle charging station network. The charging stations receive supplies from the energy storage system that absorbs renewable energy, contributing to a sustained DC demand that helps with revenues. Representative results are presented for two operation modes and different sets of weights assigned to the objectives. Substantial improvement in the profitability of combined applications over single stationary applications is shown. Pareto frontier of a reduced dimensional problem is obtained to show the trade-off between design objectives. This work could pave the road for future implementations of the new form of energy storage systems.<br>

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“…Battery energy storage systems (BESSs) have been deployed to meet the challenges from the variability and intermittency of the power generation from renewable energy sources (RESs) [ 1 – 4 ]. Without BESS, the utility grid (UG) operator would have to significantly curtail renewable energy generation to maintain system reliability and stability [ 5 , 6 ]. In the case of wind energy, examples of non-fully utilized wind farms are provided in [ 7 – 9 ].…”

Section: Introductionmentioning

confidence: 99%

Design of combined stationary and mobile battery energy storage systems

Hayajneh

¹

,

Herrera

²

,

Zhang

³

2021

PLoS ONE

3

0

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To minimize the curtailment of renewable generation and incentivize grid-scale energy storage deployment, a concept of combining stationary and mobile applications of battery energy storage systems built within renewable energy farms is proposed. A simulation-based optimization model is developed to obtain the optimal design parameters such as battery capacity and power ratings by solving a multi-objective optimization problem that aims to maximize the economic profitability, the energy provided for transportation electrification, the demand peak shaving, and the renewable energy utilized. Two applications considered for the stationary energy storage systems are the end-consumer arbitrage and frequency regulation, while the mobile application envisions a scenario of a grid-independent battery-powered electric vehicle charging station network. The charging stations receive supplies from the energy storage system that absorbs renewable energy, contributing to a sustained DC demand that helps with revenues. Representative results are presented for two operation modes and different sets of weights assigned to the objectives. Substantial improvement in the profitability of combined applications over single stationary applications is shown. Pareto frontier of a reduced dimensional problem is obtained to show the trade-off between design objectives. This work could pave the road for future implementations of the new form of energy storage systems.

show abstract

Curtailment analysis for the Nordic power system considering transmission capacity, inertia limits and generation flexibility

Cited by 40 publications

References 11 publications

Optimal planning of Renewable energy generators in modern power grid for enhanced system inertia

Optimal planning of Renewable energy generators in modern power grid for enhanced system inertia

Design of Combined Stationary and Mobile Battery Energy Storage Systems

Design of combined stationary and mobile battery energy storage systems

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