Tharanga Wickramarathna

cropped-pic.jpg
Name with Initials:
M.T.A.P. Wickramarathna
Year of Admission to the Program:
2009
Topic of the Dissertation:

Transmission Network Reinforcement for Wind Power Absorption in Ambewela-Sri Lanka.

Abstract of the Dissertation:

Sri Lanka has huge wind resource. It has been proven by many local and foreign studies. According to those studies the Central Province has the best wind capability compared to other provinces. In this study Ambewela, Hare Park, Ratninda and Naula sites are identified as suitable locations for wind power extraction from Central Province, Sri Lanka. The 21MW wind power plants (WPP) for Ambewela, Hare Park & Ratninda sites and 4MW WPP for Naula are decided. NuwaraEliya, Badulla, Ukuwela and Naula 132/33kV Grid Substations are identified as suitable interconnection points for the above selected sites respectively. After detailed analysis of wind resource in the area Gamesa G97; 2MW & Leitwind LTW77; 1MW wind turbines are selected as most suitable for Central Province. The WPPs modeled in to the Sri Lankan Power System using Power System Simulation for Engineers (PSS/E) software and conduct the Load Flow Analysis, Single Contingency Analysis, Fault Level Calculation, PV & QV Analysis and Dynamic studies. By analyzing the results of above studies, it’s identified short term improvement as minor system improvements and long term improvements as major for better wind absorption into the Sri Lankan power System. Minor system improvements includes adding reactive power resources to identified locations, minor improvements in exiting transmission lines and increase reserve margin of the power system. Major system improvements includes redo the power system modeling using PSS/E software to represent the real situation of the power system and make improvements in planning procedure and criteria, conduct comprehensive voltage stability study and implement under voltage load shedding scheme. Further proposed introduce higher voltage backbone system or major improvements of existing 220kV backbone system, introduce more active and reactive power sources in suitable locations, implement group frequency controlling method, introducing new generation and bulk energy storage options such as Pumped Storage Power Plants which enhance the wind absorption limits into the power system.

Research Publications:
[1] Design and implementation of an Interface for a remote access to energy meters, Annual IEE Sri Lanka Conference 2001. (Oral Presentation)

[2] Transmission Network Planning Using Genetic Algorithm
Transmission & Distribution Conference and Exposition: Latin America, 2006. TDC apos; 06. IEEE/PES, Volume , Issue , Aug. 2006 Page(s):1 – 5

[3] Transmission Network Planning Using Genetic Algorithm
TENCON 2006. 2006 IEEE Region 10 Conference, Volume , Issue , Nov. 2006 Page(s):1 – 4

[4] Transmission Expansion Planning using Genetic Algorithm
The International Conference on Electrical Engineering 2007, Honk Kong. (Oral Presentation)
[5] Off-Grid development of Sustainable Energy resources for Ecotourism Facilities in Kalpitiya Peninsula, SLEMA Journal Volume 14 No.1 March 2011

[6] Reconnaissance study of pumped storage power plants for peaking power generation in Sri Lanka at HYDRO 2011International Conference and Exhibition, Prague, Czech Republic. (Oral Presentation)

[7] Predicting the Possible Capacity of Pumped Storage Power Plant for Sri Lanka By Forecasting Load Curve Shape, SLEMA Journal Volume 14 No.2 September 2011 

[8] Planning of Pumped Storage Power Plants for Power Generation in Sri Lanka, SLEMA Journal Volume 14 No.2 September 2011
[9] Transmission Network Reinforcement for Wind Power Absorption in Ambewela-Sri Lanka in the ASIA 2012, Fourth International Conference on Water Resources and Renewable Energy Development in Asia Conference, Thailand. (Oral Presentation) 

[10] Case Study to increase wind power generation in Sri Lanka, The AESIEAP 19th Conference on Electric Power Supply Industry 2012, Bali, Indonesia. (Oral Presentation)

[11] Economic Evaluation of Selected Pumped Storage Power Plant Sites in Sri Lanka, SLEMA Journal Volume 15 No.1 & 2 September 2012. 

[12] Interconnection of Kiriketi Pumped Storage Power Plant in Sri Lanka, SLEMA Journal Volume 15 No.1 & 2 September 2012.
[13] Increased Wind Power Generation in Sri Lanka: A Case Study, SLEMA Journal Volume 16 No.1 March 2013.

[14]. The Difficulties and Challenges Faced in Obtaining CDM Registration for BHP, Hydro Asia Conference 2014 in Sri Lanka.

[15] Energy Analysis & Effects on Power Utility of LED’s compared to Conventional Bulbs: The AESIEAP 20th Conference on Electric Power Supply Industry 2014, Jeju City, South Korea. (Oral Presentation)

[16] Site Selection & Basic Design Configuration for Pumped Storage Power Plants, Energy Symposium of Sri Lanka 2015 organized by Ministry of Power & Energy, Sri Lanka and SLEMA Journal Volume 18 No. 2 September 2015.
[17] Economical Evaluation of pumped storage power plant Complexes and comparison with other candidate pumped storage power plants proposed for Sri Lanka, Energy Symposium of Sri Lanka 2015 organized by Ministry of Power & Energy, Sri Lanka and SLEMA Journal Volume 18 No. 2 September 2015.


[18] Basic Design and Economics of Pumped Storage Power Plant Complexes for Sri Lanka, Hydro 2015 International Conference and Exhibition, France.

[19] Wind Resource Assessment and Turbine Selection: Case Study for Mannar, Sri Lanka, Electrical Engineering Conference 2015.