Improved Assessment of the Flexibility Range of Distribution Grids Using Linear Optimization

Contreras, Daniel; Rudion, Krzysztof

doi:10.23919/pscc.2018.8442858

Cited by 53 publications

(57 citation statements)

References 13 publications

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“…There are two fundamental methodologies described in the literature to estimate the feasibility potential of a VPP, namely, i) Monte Carlo estimation [1], [7] and ii) optimization approach [3], [8], [11], [19]. Both methodological approaches have the potential to be extended in the context of estimating flexibility potential.…”

Section: B State Of the Artmentioning

confidence: 99%

“…Then, the boundary is further refined by solving the This approach is more suitable for small to medium scale networks; however, the size and computation complexity grows exponentially with network size and number of DER. Also, due to network constraints, the optimization problem is non-linear in nature, though promising research is ongoing to propose linearisation of network and DER constraints which might be suitable to reduce the computational complexity of this method (e.g., [11]).…”

Section: B State Of the Artmentioning

confidence: 99%

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On Feasibility and Flexibility Operating Regions of Virtual Power Plants and TSO/DSO Interfaces

Riaz

Mancarella

2019

2019 IEEE Milan PowerTech

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Distributed energy resources are an ideal candidate for the provision of additional flexibility required by the power system to support the increasing penetration of renewable energy sources. The integrating large number of resources in the existing market structure, particularly in the light of providing flexibility services, is envisioned through the concept of virtual power plant (VPP). To this end, it is crucial to establish a clear methodology for VPP flexibility modelling. In this context, this paper first puts forward the need to clarify the difference between feasibility and flexibility potential of a VPP, and then propose a methodology for the evaluation of relevant operating regions. Similar concepts can also be used to modelling TSO/DSO interface operation. Several case studies are designed to reflect the distinct information conveyed by feasibility and flexibility operating regions in the presence of slow and fast responding resources for a VPP partaking in the provision of energy and grid support services. The results also highlight the impact of flexible load and importantly network topology on the VPP feasibility (FOR) and flexibility (FXOR) operating regions.Index Terms-Active distribution networks, flexibility, frequency control ancillary services, TSO/DSO interface, virtual power plant. arXiv:1906.05472v1 [eess.SY]

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Section: B State Of the Artmentioning

confidence: 99%

Section: B State Of the Artmentioning

confidence: 99%

On Feasibility and Flexibility Operating Regions of Virtual Power Plants and TSO/DSO Interfaces

Riaz

Mancarella

2019

2019 IEEE Milan PowerTech

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“…Such parts are active distribution networks (ADN). Methods to represent ADNs through aggreagated capability charts have been previously proposed in the literature [17]- [20], [23]. Common for all of these methods is that they are giving numerical and deterministic representations of ADNs.…”

Section: Systemsmentioning

confidence: 99%

“…Different solutions on how reactive power can be aggregated and controlled at the PCC have been proposed [7]- [16]. Numerical [17]- [21], [23] and analytical [22] approaches have been used to assess distribution systems' reactive power capabilities for a number of case studies taking into account different criteria and operating conditions. Capability charts of distribution systems have been proposed by [17]- [19], [23].…”

Section: Introductionmentioning

confidence: 99%

“…Numerical [17]- [21], [23] and analytical [22] approaches have been used to assess distribution systems' reactive power capabilities for a number of case studies taking into account different criteria and operating conditions. Capability charts of distribution systems have been proposed by [17]- [19], [23]. These charts define a reactive power characteristic in the similar way as it is defined for any other generating unit like synchronous or doubly-fed induction generator (DFIG).…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic Reactive Power Capability Charts at DSO/TSO Interface

Stanković

Söder

2020

IEEE Trans. Smart Grid

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Hosting an increasing share of distributed generation and flexible consumers, distribution systems are being more often considered as providers of ancillary services among which are reactive power support and voltage control. For the purpose of reliable and efficient planning and operation of a transmission system, information about reactive power capabilities of connected distribution systems would be beneficial. These capabilities are subject to uncertainties especially with a presence of intermittent distributed generation and stochastic loads. To capture these uncertainties, this paper introduces probabilistic capability charts using the concept of probabilistic curves. These curves analytically represent reactive power support limits of distribution systems as a family of random variables with their associated probabilistic density functions. As such, they carry more information about states of the system than deterministic curves. The proposed capability charts can be easily applied in probabilistic studies of the overlaying transmission system. By providing analytical expressions of stochastic power injections of connected distribution systems, the use of these charts can speed up time and memory demanding probabilistic calculations of transmission systems planning and operation studies. Not containing sensitive system information, the charts can be used to exchange data between distribution and transmission system operators.

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Integrating Distributed Energy Resources into the Independent System Operators’ Energy Market: a Review

Liu

2021

Curr Sustainable Renewable Energy Rep

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Improved Assessment of the Flexibility Range of Distribution Grids Using Linear Optimization

Cited by 53 publications

References 13 publications

On Feasibility and Flexibility Operating Regions of Virtual Power Plants and TSO/DSO Interfaces

On Feasibility and Flexibility Operating Regions of Virtual Power Plants and TSO/DSO Interfaces

Probabilistic Reactive Power Capability Charts at DSO/TSO Interface

Integrating Distributed Energy Resources into the Independent System Operators’ Energy Market: a Review

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