Energy and Power Engineering

Volume 12, Issue 10 (October 2020)

ISSN Print: 1949-243X   ISSN Online: 1947-3818

Google-based Impact Factor: 0.80  Citations  h5-index & Ranking

Determination of Effective Load Shedding Schemes in Electric Power Plants

HTML  XML Download Download as PDF (Size: 1790KB)  PP. 555-567  
DOI: 10.4236/epe.2020.1210034    291 Downloads   619 Views  


The ability of power system to survive the transition from preloading state to the gradual increase in load and thereafter reach an acceptable operational condition is an indication of transient stability of the system. The study analyzed load shedding scheme through the use of empirical measurement tools and load-flow simulation techniques. It was geared towards determining effective load shedding strategies to reduce unnecessary overload in order to achieve dynamic stability of the electric power network in the Export Free Trade Zone, Calabar, Nigeria. From the tests and the measurements taken, it was observed that the real and reactive powers from the generator and the mechanical power from the turbine engine were stable when the load shedding controller was switched on, as compared to when it was off. The engine speed, the bus-bar frequency and the output voltage of the generator stabilized within a shorter time (about 8 seconds) when the controller was switched on than when it was on the off condition. Also, there were noticeable fluctuations in the speed of the remaining two generators. It became stable at about 12 seconds after the loss. The variations were 0.3 per cent of the nominal speed value. The excitation voltage fluctuated from 1.2 (pu) to 4.5 (pu) when the bus voltage dipped as a result of additional load. It then came down and stabilized at 1.8 (pu) after few swings. This confirmed that the stability of power system is much enhanced when load shedding controllers are effectively configured on the network.

Share and Cite:

Effiong, G., Ainah, P.K. and Karniliyus, J. (2020) Determination of Effective Load Shedding Schemes in Electric Power Plants. Energy and Power Engineering, 12, 555-567. doi: 10.4236/epe.2020.1210034.

Cited by

No relevant information.

Copyright © 2021 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.