Enabling supercapacitors to compete for ancillary services: An important step towards 100 % renewable energy

Glass, Ephram; Glass, Victor

doi:10.1016/j.tej.2020.106763

Cited by 13 publications

(4 citation statements)

References 1 publication

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“…Glass and Glass [81] evaluated the technical performance of using supercapacitors (SCs) for the AS provision. Compared to GTs [77] and batteries [54], super capacitors have significantly faster response times, making them potential candidates for FFR AS provision.…”

Section: Supercapacitorsmentioning

confidence: 99%

Advancing Fast Frequency Response Ancillary Services in Renewable-Heavy Grids: A Global Review of Energy Storage-Based Solutions and Market Dynamics

Varhegyi,

Nour

2024

Preprint

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This review paper addresses the growing challenges and developments in frequency control within power systems influenced by increasing penetration of renewable energy sources. It evaluates the advancements and limitations of renewable-based control technologies and explores the critical role of diverse energy storage technologies in providing fast frequency response ancillary services. Through a comprehensive analysis of global literature, this paper categorizes energy storage solutions according to their efficacy in meeting fast frequency response demands and potential for revenue generation. It reveals significant gaps in current research, which predominantly focuses on battery energy storage systems and microgrid applications, with insufficient attention to grid-scale storage solutions and innovative energy storage technologies. This analysis identifies a lack of detailed technical simulations and hybrid storage models for frequency control, as well as a minimal exploration of the environmental benefits, particularly in terms of carbon dioxide emission reductions, associated with deploying new energy storage technologies in ancillary service markets. The paper concludes by highlighting the necessity for further research incorporating detailed techno-economic evaluations and carbon dioxide reduction potential of modular, scalable energy storage technologies, facilitated by advanced network simulation models and comprehensive market analysis.

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Section: Supercapacitorsmentioning

confidence: 99%

Advancing Fast Frequency Response Ancillary Services in Renewable-Heavy Grids: A Global Review of Energy Storage-Based Solutions and Market Dynamics

Varhegyi,

Nour

2024

Preprint

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“…They designed a cost-based ancillary services market mechanism and verified its technical and economic feasibility through a simulation of the Chilean [126] electricity market. Some scholars studied the joint clearance of the electricity spot market and the auxiliary services market [127][128][129], while some others have proposed mechanisms to prompt flexible resource providers, including energy storage [130] and distributed power supply [131], to participate in the secondary services market.…”

Section: Mechanisms and Strategies For Renewable Energy Producers Participating In The Power Marketmentioning

confidence: 99%

Key Issues and Technical Applications in the Study of Power Markets as the System Adapts to the New Power System in China

et al. 2021

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To reach the “30·60” decarbonization target (where carbon emissions start declining in 2030 and reach net zero in 2060), China is restructuring its power system to a new energy-based one. Given this new situation, this paper reviews previous studies on the power market and highlights key issues for future research as we seek to adapt to the new power system (NPS). Based on a systematic literature review, papers on the operational efficiency of the power market, participants’ bidding strategies and market supervision were identified. In a further step, papers with high relevance were analyzed in more detail. Then, key studies that focused on market trading under China’s new power system were picked out for further discussion. New studies were searched for that pertained to new energy mechanisms and bidding, the transition from coal-fired power, flexible resources and the technical applications of simulations. The quantitative analysis supports the construction of a basic paradigm for the study of power markets that is suitable for the new power system. Finally, the theoretical basis and application suggestions for power market simulations are introduced. This study summarized the existing research on the power market and further explored the key issues relating to the power market as it adapts to the NPS, hoping to inspire better research into China’s power sector, and promote safe, low-carbon, and sustainable development in China’s power industry.

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“…The increasing demand for renewable energy resources presents a challenge for the grid network, where the variability of many systems such as wind and solar requires the need to buffer fluctuations of power rapidly. [1,2] This can readily be solved using high-power and long cyclelife supercapacitor devices where they are charged to their maximum voltage and required to stay in their charged state, ready for a fast ondemand discharge of energy. However, the efficiency of this technology in grid-scale stabilization is limited due to the high self-discharge rates of supercapacitor devices.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] For electric double-layer capacitors (EDLCs), three different mechanisms lead to selfdischarge: ohmic leakage, faradaic reactions, and ion diffusion (see Figure S1, Supporting Information). Ohmic leakage, where leakage currents arise due to resistive pathways being formed between the two electrodes, indicating that somewhere within the device there is a short circuit caused by a fault in the cell, usually attributed to thermal shrinkage or dielectric breakdown of the separator material, where the ohmic self-discharge is described by Equation (1): (1) This represents the discharge of a capacitor over the internal electrical resistance between the two electrodes, which is dominated by the thickness and the dielectric properties of the separator, meaning that, the higher the dielectric constant and thickness of the separator, the slower the ohmic self-discharge. Therefore, a route to reducing the ohmic self-discharge is to increase this internal electrical resistance without affecting the mobility of the ions in the electrolyte during charging and discharging.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Self‐Discharge in Aqueous Supercapacitor Devices Incorporating Highly Polar Nanofiber Separators

Buxton

King

Stolojan

2022

Energy & Environ Materials

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One of the major problems limiting the applications of electric double‐layer (EDLC) supercapacitor devices is their inability to maintain their cell voltage over a significant period. Self‐discharge is a spontaneous decay in charged energy, often resulting in fully depleted devices in a matter of hours. Here, a new method for suppressing this self‐discharge phenomenon is proposed by using directionally polarized piezoelectric electrospun nanofiber films as separator materials. Tailored engineering of polyvinylidene fluoride (PVDF) nanofiber films containing a small concentration of sodium dodecyl sulfate (SDS) results in a high proportion of polar β phases, reaching 38 ± 0.5% of the total material. Inducing polarity into the separator material provides a reverse‐diode mechanism in the device, such that it drops from an initial voltage of 1.6 down to 1 V after 10 h, as opposed to 0.3 V with a nonpolarized, commercial separator material. Thus, the energy retained for the polarized separator is 37% and 4% for the nonpolarized separator, making supercapacitors a more attractive solution for long‐term energy storage.

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Enabling supercapacitors to compete for ancillary services: An important step towards 100 % renewable energy

Cited by 13 publications

References 1 publication

Advancing Fast Frequency Response Ancillary Services in Renewable-Heavy Grids: A Global Review of Energy Storage-Based Solutions and Market Dynamics

Advancing Fast Frequency Response Ancillary Services in Renewable-Heavy Grids: A Global Review of Energy Storage-Based Solutions and Market Dynamics

Key Issues and Technical Applications in the Study of Power Markets as the System Adapts to the New Power System in China

Suppression of Self‐Discharge in Aqueous Supercapacitor Devices Incorporating Highly Polar Nanofiber Separators

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