A Monte-Carlo Simulation Method for Setting the Underfrequency Load Shedding Relays and Selecting the Spinning Reserve Policy in Autonomous Power Systems

The target of this work is the determination of the optimal solution in transmission expansion planning in the particular case of isolated systems involving dc interconnections. Therefore special attention is given to dc-links modelling aspects for steady state analysis, as well as security constraints relevant to small sized systems operation. Therein lies the first contribution of this work, namely in the incorporation of operating reserve related considerations and simplified dc-links models in isolated systems planning. The proposed method combines a Monte-Carlo simulation, which enables the probabilistic assessment of power system operation, with an adaptive enumeration technique which recurrently determines and evaluates investment scenarios of interest, based on suitable probabilistic indices. This constitutes the second contribution of this work, as a map of all meaningful solutions to the planning problem may be generated, which in turn allows not only the determination of the optimal solution, but also the evaluation of the effects of over-or under-investment in certain parts of the grid.

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“…A typical reserve target for isolated systems is the largest power output among the generating units [31]. However, several publications (e.g.…”

Section: On Security Constraintsmentioning

confidence: 99%

Adaptive enumeration method for the optimal interconnection planning of isolated power systems

Loukarakis

Stavrakakis

2013

IET Generation, Transmission & Distribution

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“…Depending on the dc-link configuration, length of cables and location, availability and outage rate varies, but at least 2-3 trips per year can be reasonably expected [13]. This is close to the 3-6 trips of a typical conventional generator [14]. However, while an isolated system will be able to withstand the trip of a conventional generator, this is not necessarily the case when the interconnection trips.…”

Section: Spinning Reserve Considerationsmentioning

confidence: 99%

Investigation of spinning reserve impact on isolated systems DC interconnection feasibility

Loukarakis

Stavrakakis

2011

2011 10th International Conference on Environment and Electrical Engineering

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This paper investigates the optimal size of a potential DC interconnection between an isolated island system and the mainland grid. Adequate spinning reserve is perhaps the most prominent security requirement in isolated systems. Thus this paper focuses specifically on how the optimal interconnection solution is affected by spinning reserve (SR) requirements and cost. A Monte-Carlo based probabilistic load flow is used to assess the benefits of each interconnection scenario. Indicative results are presented regarding a possible submarine interconnection of the Greek island of Crete with the mainland grid.

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“…The electric power utilities adopt different approaches to this problem, which are mainly based on their experience and the robustness of their systems [8]. Due to new interconnections different UFLS that were previously designed for a specific power system find themselves jointly operating in a different environment (see Fig.…”

Section: ) Different (Baltic's and Spain's) Ufls Schemes Jointly Opementioning

confidence: 99%

Interconnection of power systems with different under-frequency load shedding schemes

Sauhats

Chuvychin

Antonovs

et al. 2011

2011 10th International Conference on Environment and Electrical Engineering

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Development of power systems leads to new interconnections that can join power systems with different approaches regarding under-frequency load shedding (UFLS). Parallel operation of different UFLS schemes is analyzed in this paper considering possible UCTE / NORDEL and IPS / UPS interconnection. It is shown that due to differences between UFLS schemes the interconnection's stability can be endangered.

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A Monte-Carlo Simulation Method for Setting the Underfrequency Load Shedding Relays and Selecting the Spinning Reserve Policy in Autonomous Power Systems

Cited by 51 publications

References 7 publications

Adaptive enumeration method for the optimal interconnection planning of isolated power systems

Adaptive enumeration method for the optimal interconnection planning of isolated power systems

Investigation of spinning reserve impact on isolated systems DC interconnection feasibility

Interconnection of power systems with different under-frequency load shedding schemes

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