The most innovative concept in the nowadays distribution system is that Distributed Energy Resources (DERs) are active subjects of the system with new business opportunities from the active management but with the responsibility to assure a proper operation of the system working in coordination with Distribution System Operators (DSOs). This sharing of responsibility for the system operation between DSO and customers, according to the regulatory environment, is the basis of a proper implementation of an Active Distribution Network (ADN). A proper analysis should be performed to be sure that active management does not reduce system reliability, but ADNs constitute a significant opportunity for the system stakeholders (regulators, system operators, and customers) to achieve an open, fair and integrated distribution system. However, these players have contrasting and opposite goals. In fact, the Civil Society is mainly interested in preserving the environment and promoting the integration of Renewable Energy Sources at reasonable costs. The DSO is interested in Capex and Opex related to the distribution services and in improving reliability and efficiency in order to increase its revenues. Finally, DER investors also make decision considering DER Capex and Opex, and systems charges, together with the incomes from energy selling and the incentives for renewables. In the paper, a software tool developed by the authors is used to perform the costs/benefits analysis of active distribution systems. The main purpose is to quantify the impact of the active management in presence of significant amount of DERs, by assuming some planning scenarios with different regulatory environments and ADN implementations, and by assessing for each of them the economic benefits to DSOs and customers and the advantages for the Civil Society in terms of DERs penetration and system efficiency. The need to find compromise solutions for the conflicting goals of the stakeholders, and the difficulty of defining a unique objective function, have been solved by resorting to a new Multi-Objective approach, based on the Non-dominated Sorting Genetic Algorithm. In the paper, only RES generators have been considered. Load consumptions and DG productions are probabilistically modelled by assuming specific daily load/generation curves. All the supposed scenarios are analyzed on a comprehensive case study of a typical distribution system. The results of the paper may also help Regulators to define a fairer asset and performance based distribution revenue.
A multi-objective approach to investigate active distribution network impact on the contrasting goals of the distribution system stakeholders
CELLI, GIANNI;PILO, FABRIZIO GIULIO LUCA;SOMA, GIAN GIUSEPPE;
2010-01-01
Abstract
The most innovative concept in the nowadays distribution system is that Distributed Energy Resources (DERs) are active subjects of the system with new business opportunities from the active management but with the responsibility to assure a proper operation of the system working in coordination with Distribution System Operators (DSOs). This sharing of responsibility for the system operation between DSO and customers, according to the regulatory environment, is the basis of a proper implementation of an Active Distribution Network (ADN). A proper analysis should be performed to be sure that active management does not reduce system reliability, but ADNs constitute a significant opportunity for the system stakeholders (regulators, system operators, and customers) to achieve an open, fair and integrated distribution system. However, these players have contrasting and opposite goals. In fact, the Civil Society is mainly interested in preserving the environment and promoting the integration of Renewable Energy Sources at reasonable costs. The DSO is interested in Capex and Opex related to the distribution services and in improving reliability and efficiency in order to increase its revenues. Finally, DER investors also make decision considering DER Capex and Opex, and systems charges, together with the incomes from energy selling and the incentives for renewables. In the paper, a software tool developed by the authors is used to perform the costs/benefits analysis of active distribution systems. The main purpose is to quantify the impact of the active management in presence of significant amount of DERs, by assuming some planning scenarios with different regulatory environments and ADN implementations, and by assessing for each of them the economic benefits to DSOs and customers and the advantages for the Civil Society in terms of DERs penetration and system efficiency. The need to find compromise solutions for the conflicting goals of the stakeholders, and the difficulty of defining a unique objective function, have been solved by resorting to a new Multi-Objective approach, based on the Non-dominated Sorting Genetic Algorithm. In the paper, only RES generators have been considered. Load consumptions and DG productions are probabilistically modelled by assuming specific daily load/generation curves. All the supposed scenarios are analyzed on a comprehensive case study of a typical distribution system. The results of the paper may also help Regulators to define a fairer asset and performance based distribution revenue.
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