Limitation on connecting mini hydro power plants to the Sri Lankan power system network: A case study at Balangoda Grid Substation

Weerasekera, A. I., Arulampalam, A. and Ekanayake, J. B. (2007). Limitation on connecting mini hydro power plants to the Sri Lankan power system network: A case study at Balangoda Grid Substation. In: K. D. W. Nandalal, C. Sivayoganathan, V. Thevanesam, D. K. Jayaratne, M. A. M. Sitheeque, S. D. Dewasurendra, R. Sivakanesan, A. D. L. C. Perera and H. B. S. Ariyaratne, Proceedings of Peradeniya University Research Sessions PURSE 2007: Part II - Engineering, Physical Sciences, Humanities and Social Sciences. Peradeniya University Research Sessions PURSE 2007, Peradeniya, Sri Lanka, (263-265). 30 November 2007.


Author Weerasekera, A. I.
Arulampalam, A.
Ekanayake, J. B.
Title of paper Limitation on connecting mini hydro power plants to the Sri Lankan power system network: A case study at Balangoda Grid Substation
Conference name Peradeniya University Research Sessions PURSE 2007
Conference location Peradeniya, Sri Lanka
Conference dates 30 November 2007
Proceedings title Proceedings of Peradeniya University Research Sessions PURSE 2007: Part II - Engineering, Physical Sciences, Humanities and Social Sciences
Place of Publication Peradeniya, Sri Lanka
Publisher University of Peradeniya
Publication Year 2007
Sub-type Fully published paper
ISBN 9789555891011
ISSN 1391-4111
Editor K. D. W. Nandalal
C. Sivayoganathan
V. Thevanesam
D. K. Jayaratne
M. A. M. Sitheeque
S. D. Dewasurendra
R. Sivakanesan
A. D. L. C. Perera
H. B. S. Ariyaratne
Volume 12
Issue 2
Start page 263
End page 265
Total pages 3
Language eng
Formatted Abstract/Summary
Introduction
In 2002 many mini hydro power plants were proposed to connect to the Sri Lankan power system network due to heavy shortage of electricity occurred. Today 60 mini hydro plants (Ceylon Electricity Board, 2006a)are connected to 10 grid substations and further 22 (Ceylon Electricity Board, 2006b) already issued LOI for connection. However, mini hydro plants operations are irregular in two ways. The most effected irregularity is due to faults. The MV lines are more prone for failures. Therefore the mini hydro operation got interrupted several times per months. This causes difficulties to the system operators. The most challenging cases occurred due to a line breaking during heavy loaded conditions and over voltage problems at light loaded operations.
This study is carried out in order to ascertain the implications to the power system network due to the connection of mini hydro power plants. For this study Balangoda Grid Substation is chosen as it has the maximum penetration of mini hydro plants compared to other Grid Substations. This study is based on the data collected at the mini hydro plants connected to the Balangoda Grid Substation. Several power system network loading and mini hydro generating conditions were studied. Limitations of over voltages were found and discussed when large number of mini hydros is integrated at their above 60% capacity (Ceylon Electricity Board, 2006c).
Subjects 0906 Electrical and Electronic Engineering
Keyword Sri Lankan power system network
Balangoda Grid Substation
Network loading
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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