ITESLA

Innovative Tools for Electrical System Security within Large Areas

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 Obiettivo del progetto (Objective)

'6 Transmission System Operators (Belgium, France, Greece, Norway, Portugal and United Kingdom) and CORESO, a TSO coordination centre, together with 13 RTD performers propose a 4 year R&D project to develop and to validate an open interoperable toolbox which will bring support, by 2015, to future operations of the pan-European electricity transmission network, thus favouring increased coordination/harmonisation of operating procedures among network operators. Under the coordination of RTE, new concepts, methods and tools are developed to define security limits of the pan European system and to quantify the distance between an operating point and its nearest security boundary: this requires building its most likely description and developing a risk based security assessment accounting for its dynamic behaviour. The chain of resulting tools meets 3 overarching functional goals: i) to provide a risk based security assessment accounting for uncertainties around the most likely state, for probabilities of contingencies and for corresponding preventive and corrective actions. ii) to construct more realistic states of any system (taking into account its dynamics) over different time frames (real-time, intraday, day ahead, etc.). iii) to assess system security using time domain simulations (with less approximation than when implementing current standard methods/tools). The prototype tool box is validated according to use cases of increasing complexity: static risk-based security approach at control zone level, dynamic security margins accounting for new power technologies (HVDC, PST, FACTS), use of data coming from off-line security screening rules into on-line security assessment, and finally security maps at pan European level. Dissemination is based on periodic workshops for a permanent user group of network operators invited to use modules to meet their own control zone needs and the ones of present or future coordination centres.'

Introduzione (Teaser)

A novel toolbox for transmission system operators (TSOs) will increase pan-European electricity security also accounting for the increasing contribution of intermittent renewable energy sources (RESs). Further, it will foster the maximisation of transmission capacity, thanks to a more cost effective utilization of the transmitting infrastructures

Descrizione progetto (Article)

The European electricity landscape is changing due to factors such as the increasing use of intermittent RESs and a common European energy market. Increasing system operation complexity necessitates enhanced coordination of operational procedures and regulations for the reliable operation of a pan-European electricity transmission network.

Supported in large part by EU funding, the project 'Innovative tools for electrical system security within large areas' (ITESLA) is creating a toolbox for the future. The consortium consists of TSOs, a Regional Coordination Service Centre (Coreso) for TSOs, and 13 research and development (R&D) partners. This toolbox will enable TSOs to conduct accurate simulations of their own systems, of coordinated regional systems or of the entire pan-European system. These simulations will allow grid operators to assess the security of the grid at various temporal scales and provide them with proposals of preventive and corrective actions to keep the system in a secure state in case of contingency.

Currently, only a few tools worldwide perform dynamic electricity security assessments. None of them account for uncertainties such as those arising from intermittent power generation. ITESLA toolbox will be the first to do so, incorporating probabilities of contingencies and the possible failures of corrective actions. Importantly, it will facilitate operation within smaller and less costly security margins across all of Europe.

During the current reporting period, scientists made important progress towards realisation of the algorithms and techniques required for the analyses, starting from an approach to filtering the most dangerous contingencies. Researchers also laid the groundwork for offline analyses development. This will provide the basis for improved security rules, based on estimates in a probabilistic environment (Monte Carlo simulations). The project scientists have also begun implementation of the information technology data management solution.

ITESLA toolbox will enable TSOs to make informed decisions for electricity security, optimising the use of intermittent renewable sources and grid assets, while minimising emissions. Its contribution to energy efficiency and the overall EU energy sector initiatives will be significant.