Studying the Maximum Instantaneous Non-Synchronous Generation in an Island System—Frequency Stability Challenges in Ireland

O’Sullivan, Jonathan; Rogers, Andrei; Flynn, Damian; Smith, Paul L.; Mullane, A.; O’Malley, Mark

doi:10.1109/tpwrs.2014.2316974

Cited by 268 publications

(169 citation statements)

References 28 publications

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“…This is because the original work [16] was focused on Ireland, which has only one interconnector, which has HVDC technology. It is worth to say that inverters can emulate system inertia, so when this capability is implemented, the numerator can be reduced accordingly (the emulation is different depending on the system the inverter is connected to: wind, PV, or HVDC interconnection).…”

Section: Step 1: Flexibility Requirements Indicatorsmentioning

confidence: 99%

Pan-European Analysis on Power System Flexibility

Blanco¹,

Purviņš²,

Chondrogiannis³

2018

Preprint

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Abstract:Ongoing deployments of intermittent non-synchronous power generators (i.e., wind turbines and photovoltaics) challenge power (electricity) system security in terms of matching power generation and demand. Higher flexibility in the future generation fleet and power demand are likely to play an essential role in maintaining secure operation of the power system. This paper proposes a stepwise methodology based on a set of indicators for future power system flexibility analysis through assessing (i) flexibility requirements, (ii) available flexibility resources, and (iii) power system adequacy. The proposed methodology is applied to a European case for 2020 and 2025 scenarios. The insights gained from this study can be used as input in distributing power balancing resources and to introduce new balancing products in a power market. Benefits of the integrated energy market are presented.

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Section: Step 1: Flexibility Requirements Indicatorsmentioning

confidence: 99%

Pan-European Analysis on Power System Flexibility

Blanco¹,

Purviņš²,

Chondrogiannis³

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…Here, improvements to forecasting performance are examined as a sensitivity case. An "improved forecasting" case was constructed by using a value of 0.9 for a, in (1). This approximately equates to an improvement of 10%.…”

Section: Synthesizing Forecasting Improvementsmentioning

confidence: 99%

“…The need for these curtailments is primarily due to the variability and uncertainty associated with wind power combined with the need for system balance, sufficient system services such as inertia and as a result of congestion arising from limitations of the transmission network. On the Irish system the so called, system non-synchronous penetration limit (SNSP) [1] is the manifestation of this need to maintain a minimum amount of conventional generation on the system to ensure system integrity. Curtailments due to operational issues, such as the SNSP constraint and minimum loads, are the focus of this paper.…”

Section: Introductionmentioning

confidence: 99%

Impact of Uncertainty on Wind Power Curtailment Estimation

Dillon

O’Malley

2017

Proceedings of the Annual Hawaii International Conference on System Sciences

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Ireland and other countries in the EU have binding targets for production of energy from renewable sources by 2020. Ireland's Renewable Energy Action Plan aims to meet this target by producing 40% of electrical energy from renewable sources and most of this will come from wind power. In order to forecast the amount of wind power capacity required, it is necessary to forecast the amount of wind power curtailment that will arise from the need to maintain a certain amount of conventional generation online to provide system services such as reserve, inertia and system balance. Estimation of future levels of wind power curtailment is also necessary for investors. In this paper, a stochastic scheduling model is used to study the impact of forecast error related uncertainty on wind power curtailment estimation. Results are shown illustrating the impact of uncertainty on final energy production from wind power and the impact improvements in forecasting could have on these estimates.

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“…This affects the inertia of the system and the electromechanical oscillations between synchronous generators after a severe fault [3]. As a result, transient stability is one of the reasons why transmission system operators limit the amount of non-synchronous renewable generation [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Optimal Curtailment of Non-Synchronous Renewable Generation on the Island of Tenerife Considering Steady State and Transient Stability Constraints

2017

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Abstract:The increasing penetration of non-synchronous, renewable energy in modern power systems displaces synchronous generation and affects transient stability. This is just one of the factors that has led to preventive curtailment of renewable energy sources in an increasing number of electrical grids. Transient stability constrained optimal power flow (OPF) techniques provide a tool to optimize the dispatch of power systems while ensuring a secure operation. This work proposes a transient stability-constrained OPF model that includes non-synchronous generation with fault ride-through capability and reactive support during voltage dips. The model is applied it to the IEEE 39 Bus benchmark test case and to the power system of the Spanish island of Tenerife, and solved using the open-source library IPOPT that implements a primal-dual interior point algorithm. The solution of the model makes it possible to optimize the dispatch of conventional plants and the curtailment of non-synchronous generation, as well as to explore methods to reduce generation cost. Fault ride-through capability, synchronous inertia and fault clearing times are identified as useful tools to reduce the curtailment of non-synchronous generation, especially during periods of low load and high availability of renewable energy sources.

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Studying the Maximum Instantaneous Non-Synchronous Generation in an Island System—Frequency Stability Challenges in Ireland

Cited by 268 publications

References 28 publications

Pan-European Analysis on Power System Flexibility

Pan-European Analysis on Power System Flexibility

Impact of Uncertainty on Wind Power Curtailment Estimation

Optimal Curtailment of Non-Synchronous Renewable Generation on the Island of Tenerife Considering Steady State and Transient Stability Constraints

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