Re-Design of Load Shedding Schemes of the Kosovo Power System

Authors: A.Gjukaj, G.Kabashi, G.Pula, N.Avdiu, B.Prebreza

Abstract:

This paper discusses aspects of re-design of loadshedding schemes with respect to actual developments in the Kosovo power system. Load-shedding is a type of emergency control that is designed to ensure system stability by reducing power system load to match the power generation supply. This paper presents a new adaptive load-shedding scheme that provides emergency protection against excess frequency decline, in cases when the Kosovo power system might be disconnected from the regional transmission network. The proposed load-shedding scheme uses the local frequency rate information to adapt the load-shedding pattern to suit the size and location of the occurring disturbance. The proposed scheme is tested in a software simulation on a large scale PSS/E model which represents nine power system areas of Southeast Europe including the Kosovo power system.

Keywords: About Load Shedding, Power System Transient, PSS/E Dynamic Simulation, Under-frequency Protection

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1078078

References:

[1] Protective Relaying-Principle and Application,third Edition, J.Lewis Blackburn, Thomas J.Domin CRC Press, New York, ISBN 1-57444- 716-5, pp.541-638
[2] "Power System Control and Stability" Second Edition, P.M.Anderson, A.A. Fouad, , WILEY-INTERSCIENCE , ISBN 0-471-23862-7, pp.13- 48
[3] Transmissions Network Development Plan (2010-2019) www.kostt.com
[4] Under voltage Load Shedding Guidelines, Western Electricity Coordinating Council, July 1999.
[5] System Protection Schemes in Power Networks, CIGRE Technical Report no. 187, June 2001
[6] PSS/E manual, version 32
[7] Grid Cod KOSTT, www.kostt.com
[8] Distribution Code www.kek-energy.com