Heuristic Scenario Builder for power system operator training

This paper presents a probabilistic methodology for assessing power system resilience, motivated by the extreme weather storm experienced in Iceland in December 2019. The methodology is built on the basis of models and data available to the Icelandic transmission system operator in anticipation of the said storm. We study resilience in terms of the ability of the system to contain further service disruption, while potentially operating with reduced component availability due to the storm impact. To do so, we develop a Monte Carlo assessment framework combining weather-dependent component failure probabilities, enumerated through historical failure rate data and forecasted wind-speed data, with a bi-level attacker-defender optimization model for vulnerability identification. Our findings suggest that the ability of the Icelandic power system to contain service disruption moderately reduces with the storm-induced potential reduction of its available components. In other words, and as also validated in practice, the system is indeed resilient.

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Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part I: Principal

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.433-440.7175 ◽

2012 ◽

Vol 433-440 ◽

pp. 7175-7182

Author(s):

Mohammad Moradzadeh ◽

René Boel

Keyword(s):

Power Systems ◽

Power System ◽

Electricity Market ◽

Large Scale ◽

Electric Power Systems ◽

Coordination Control ◽

Coordination Problem ◽

Control Actions ◽

System Operator

This two-part paper deals with the coordination of the control actions in a network of many interacting components, where each component is controlled by independent control agents. As a case study we consider voltage control in large electric power systems, where ever-increasing pressures from the liberalization and globalization of the electricity market has led to partitioning the power system into multiple areas each operated by an independent Transmission System Operator (TSO). Coordination of local control actions taken by those TSOs is a very challenging problem as poorly coordinated operation of TSOs may endanger the power system security by increasing the risk of blackouts. This coordination problem involves many other issues such as communication, abstraction and last but not least optimization. This first part of the paper is devoted to the principals of the coordination control, addressing some of those issues using as a case study the problem of coordination control for avoiding voltage collapse in large-scale multi-area power systems.

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Replacement Reserve for the Italian Power System and Electricity Market

Energies ◽

10.3390/en13112916 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2916

Author(s):

Mauro Caprabianca ◽

Maria Carmen Falvo ◽

Lorenzo Papi ◽

Lucrezia Promutico ◽

Viviana Rossetti ◽

...

Keyword(s):

Power Systems ◽

Power System ◽

Electricity Market ◽

Renewable Energy Sources ◽

Real Data ◽

Forecast Horizon ◽

European Guidelines ◽

Central Platform ◽

System Operator ◽

New Methodologies

Over the last years, power systems around the globe experienced deep changes in their operation, mainly induced by the widespread of Intermittent Renewable Energy Sources (IRES). These changes involved a review of market and operational rules, in the direction of a stronger integration. At European level, this integration is in progress, driven by the new European guidelines and network codes, which deal with multiple issues, from market design to operational security. In this framework, the project TERRE (Trans European Replacement Reserve Exchange) is aimed at the realization of a European central platform, called LIBRA, for the exchange of balancing resources and, in particular, for the activation of the procured Replacement Reserve (RR) resources. The Italian Transmission System Operator (TSO), TERNA, is a participant of the project and it is testing new methodologies for the sizing of RR and its required activation throughout the TERRE process. The aim of the new methodologies is to find areas of potential improvement in the sizing of RR requirements and activation, which open up the possibility for a reduction of the procurement cost, without endangering the security of the power system. This paper describes a new RR sizing methodology, proposed by TERNA, which is based on a persistence method, showing its results on real data and highlighting key advantages and potential limitations of this approach. In order to overcome these limitations, a literature review on alternative approaches has been carried out, identifying nowcasting techniques as a relevant alternative for the very short term forecast horizon. These one could be further investigated and tested in the future, using the proposed persistence method as a benchmark.

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