• Plataforma de vídeos del IIT
  • Twitter
  • LinkedIn
  • Asociación de Ingenieros del ICAI
  • Intranet
  • Spanish
Go top
Technology offer

ISLA: Island System Load-shedding Applications

Dr. Lukas Sigrist

General description

iSLA is a tool for simulation, analysis and design of conventional and advanced underfrequency load-shedding (UFLS) schemes of island and isolated power systems. iSLA can handle a large amount of operating and contingency scenarios.

Isolated power systems are especially sensitive to generation-load imbalances. The small size, the relatively low inertia, and the comparatively large generation in-feeds make them more vulnerable than large interconnected systems. UFLS schemes are the last-resort tool to protect the power system in case of a severe contingency. iSLA incorporates both conventional and advanced UFLS schemes.

Key features

  • Simple and quick simulation of conventional UFLS schemes: the user can either use predefined contingencies or specify them explicitly.
  • Two-step design of conventional UFLS schemes: Contingencies are either selected manually or through Cluster Analysis. Different optimization algorithms and objective function formulations are available. The optimization constraints and the set of decision variables are fully modifiable.
  • Monte-Carlo simulations for the analysis of conventional UFLS schemes: the user can select from a large set of distribution functions and specify their parameters. Several reporting indexes can also be specified by the user.
  • Synthesis of advanced UFLS schemes: the user can quickly simulate the behavior of UFLS schemes based on Decision Trees, ANN, Regression, or Frequency Stability Boundary.
  • Tuning of generator models for frequency stability studies: the user can select and fine tune generator models by using either available detailed models or field test measurements.
  • Incorporation of energy storage systems.

Publications

[1] L. Sigrist, A UFLS scheme for small isolated power systems using rate-of-change of frequency. IEEE Transactions on Power Systems, vol. 30, no. 4, pp. 2192-2193, July 2015.

[2] L. Sigrist, I. Egido, L. Rouco, Principles of a centralized UFLS scheme for small isolated power systems. IEEE Transactions on Power Systems, vol. 28, no. 2, pp. 1779-1786, Mayo 2013.

[3] L. Sigrist, I. Egido, L. Rouco, Performance analysis of UFLS schemes of small isolated power systems. IEEE Transactions on Power Systems, vol. 27, no. 3, pp. 1673-1680, August 2012.

[4] L. Sigrist, I. Egido, L. Rouco, A method for the design of UFLS schemes of small isolated power systems. IEEE Transactions on Power Systems, vol. 27, no. 2, pp. 951-958, May 2012.

[5] I. Saboya, I. Egido, E. Lobato, L. Sigrist, Analysis of UFLS schemes with increased wind generation in small isolated power systems. In 17th Power Systems Computation Conference - PSCC'11.Stockholm, Sweden, 22-26 August 2011.

[6] L. Sigrist, I. Egido, E.F. Sánchez-Úbeda, L. Rouco, Representative operating and contingency scenarios for the design of UFLS schemes. IEEE Transactions on Power Systems, vol. 25, no. 2, pp. 906-913, May 2010.

We use our own and third-party cookies to improve the functionality of our website and the quality of our service, by analyzing your browsing habits.
For more information about cookies and how to refuse them, please visit our Cookies Policy.



EU Cookie Directive by www.iit.comillas.edu