Active System Management Approach for Flexibility Services to the Greek Transmission and Distribution System

Sijakovic, Nenad; Terzic, Aleksandar; Fotis, Georgios; Mentis, Ioannis; Zafeiropoulou, Magda; Maris, Theodoros I.; Zoulias, Emmanouil; Elias, Charalambos; Ristic, Vladan; Vita, Vasiliki

doi:10.3390/en15176134

Cited by 35 publications

(25 citation statements)

References 10 publications

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“…Consequently, numerous smart grid projects prematurely fail [89]. Some authors, such as [11,90], mentioned that the new business models should compensate storage system owners based on the imbalances they can cover, either individually or aggregated, as well as the eventually accelerated aging caused by supporting the grid. For instance, the results in [90] showed a return on investment between 9.5 and 19.1 years when BESSs are deployed to provide frequency balancing in the Italian wholesale market, which might not be attractive to investors, as the expected life of a BESS is between 5 and 15 years.…”

Section: Emerging Solutionsmentioning

confidence: 99%

“…A business case is needed to evaluate the feasibility of microgrids, as the conditions are different among countries or even cities within the same country. In [11], key performance indicators were proposed to validate the feasibility of deploying a smart grid in Greece under the context of the One Network for Europe (OneNet) project. Although the smart grids studied by [10] presented encouraging results, extrapolating them to different scales is not straightforward.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

2022

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Renewable energy power plants and transport and heating electrification projects are being deployed to enable the replacement of fossil fuels as the primary energy source. This transition encourages distributed generation but makes the grid more weather-dependent, thus reducing its inertia. Simultaneously, electrical network operators face voltage, frequency, and stability challenges at the distribution level. Networks were not designed to manage the stochasticity of renewable energy sources or the congestion caused by the new transport and heating demands. Such challenges are commonly addressed through infrastructure reinforcements. This review studies how energy storage systems with different carriers can provide a collaborative solution involving prosumers as ancillary services providers at the distribution level. We focused on the European urban context; thus, we analyzed renewable energy sources, batteries, supercapacitors, hydrogen fuel cells, thermal energy storage, and electric vehicles. A thorough review of successful implementations proved that including storage in one or more carriers benefits the distribution system operators and the prosumers, from both technical and economic perspectives. We propose a correlation between individual energy storage technologies and the ancillary services they can provide based on their responses to specific grid requirements. Therefore, distribution system operators can address network issues together with the prosumers. Nevertheless, attractive regulatory frameworks and business models are required to motivate prosumers to use their assets to support the grid. Further work is recommended to describe the joint operation of multiple storage technologies as multicarrier systems, focusing on the coupling of electrical and thermal energy storage. Additionally, how ancillary services affect the energy storage system’s aging should be studied.

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Section: Emerging Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

2022

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Section: Introductionmentioning

confidence: 99%

“…This work can be seen as a continuation of [34,35] and an overview of the key initiatives that went into creating and implementing the F-platform in Greece [1]. The F-channel platform is examined in-depth in this paper, as it was initially presented in [34,35]. In order to remove any uncertainty from the conversation, the details mentioned in this work concentrate on the tasks that have recently been accomplished and implemented into the solution.…”

Section: Introductionmentioning

confidence: 99%

A Flexibility Platform for Managing Outages and Ensuring the Power System’s Resilience during Extreme Weather Conditions

Zafeiropoulou,

Sijakovic,

Zarkovic

et al. 2023

Processes

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It is challenging for the European power system to exactly predict RES output and match energy production with demand due to changes in wind and sun intensity and the unavoidable disruptions caused by severe weather conditions. Therefore, in order to address the so-called “flexibility challenge” and implement the variable RES production, the European Union needs flexible solutions. In order to accommodate quicker reactions, compared to those performed today, and the adaptive exploitation of flexibility, grid operators must adjust their operational business model, as the electrical grid transitions from a fully centralized to a largely decentralized system. OneNet aspires to complete this crucial step by setting up a new generation of grid services that can fully utilize distributed generation, storage, and demand responses while also guaranteeing fair, open, and transparent conditions for the consumer. Using AI methods and a cloud-computing approach, the current work anticipates that active management of the power system for TSO–DSO coordination will be improved by the web-based client-server application F-channel. In the current work, a user’s experience with the platform for a Business Use Case (BUC) under the scenario of severe weather conditions is presented. The current work aims to increase the reliability of outage and maintenance plans for the system operators (SOs) by granting them a more accurate insight into the conditions under which the system may be forced to operate in the upcoming period and the challenges that it might face based on those conditions. In this way, the methodology applied in this case could, via AI-driven data exchange and analyses, help SOs change the maintenance and outage plans so the potential grave consequences for the system can be avoided. The SOs will have accurate forecasts of the relevant weather parameters at their disposal that will be used in order to achieve the set targets. The main results of the presented work are that it has a major contribution to the optimal allocation of the available resources, ensures the voltage and frequency stability of the system, and provides an early warning for hazardous power system regimes.

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“…The efficient exploitation of the flexibility provided by DERs requires a close coordination between DSOs and Transmission System Operators (TSOs) [4], [5], [6], and well-functioning flexibility markets to properly remunerate the participating DER owners [7], [8], [9]. Several European research and innovation projects have dealt with the practical applications of TSOs, DSOs, and end-customers coordination to efficiently utilize flexibility services and support power system operation [10], [11].…”

Section: Introductionmentioning

confidence: 99%

An Effective Method to Estimate the Aggregated Flexibility at Distribution Level

Savvopoulos

Hatziargyriou

2023

IEEE Access

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The exploitation of flexibility services provided by distributed energy resources (DERs) located in the distribution grid becomes increasingly important for the secure and reliable operation of power systems. These resources are typically small-scale and located close to end-users, however their aggregated flexibility can offset the imbalance caused by the stochastic variations of the renewable power sources. This paper proposes a methodology to estimate with increased accuracy the available flexibility of DERs in an Active Distribution Grid (ADG) at the points of interconnection with the transmission system. An optimization-based approach is used to estimate the available maximum active and reactive power flexibility at each TSO-DSO substation for specific directions formed by constant active to reactive power ratios. In order to keep calculations manageable and calculate the available flexibility with high accuracy, the search directions are sampled from a distribution that is iteratively updated at each step. Three variations are proposed for the angle sampling, both in the angle domain and in the p-q domain. Each variation is tested on a modified 18-bus radial distribution system and its effectiveness and convergence is compared.

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Active System Management Approach for Flexibility Services to the Greek Transmission and Distribution System

Cited by 35 publications

References 10 publications

Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

A Flexibility Platform for Managing Outages and Ensuring the Power System’s Resilience during Extreme Weather Conditions

An Effective Method to Estimate the Aggregated Flexibility at Distribution Level

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