M.A. Hossain
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Published : 3 Documents
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Performance of Governor System on Minimizing Frequency Fluctuations with Wind Power Generation Sheikh, Dr. Md. Rafiqul Islam; Haque, Md. Mejbaul; Hossain, M.A.
International Journal of Electrical and Computer Engineering (IJECE) Vol 2, No 1: February 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

As wind turbine output is proportional to the cube of wind speed, the wind turbine generator output fluctuates due to wind speed variations. Hence, if the power capacity of wind power generators becomes large, wind power generator output can have an influence on the power system frequency. Therefore, this study investigates the influence of governor control systems of synchronous generators (SGs) for minimizing frequency fluctuations with high wind power penetration level, when a total capacity of SGs is considered as 100 MVA. It is seen that when both SGs operate as governor free (GF) operation, system perform better frequency control. But it can not be maintained to the acceptable level when SGs operate at GF-LFC or LFC-GF operation with wind power capacity about 5% of total capacity. Finally, it is seen that when several interconnected SGs are operated with different control modes, system frequency become more severe for 10% capacity of wind power.
RELEASE OF CLONE BT19 AND BT20 FOR POVERTY REDUCTION IN TEA SECTOR OF BANGLADESH Hossain, M.I.; Ahmed, M.; Aziz, M.A.; Arefin, M.R.; Ashrafuzzaman, M. Ashrafuzzaman; Hossain, M.A.
ASIAN JOURNAL FOR POVERTY STUDIES (AJPS) Vol 3, No 2 (2017)
Publisher : Regional Network on Poverty Eradication

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Abstract

Bangladesh is a country of 140 million populations where poverty reduction is the prior challenge. With a low level of per capita income, Bangladesh needs to formulate a multi-sectorial strategy for poverty reduction. As Bangladesh is an agricultural based country poverty can be minimized by enhancing agricultural inputs to maximize our production. Tea is an important cash crop in our country. Vast population directly or indirectly depends on our tea industry. The present study was conducted to investigate yield, quality and drought performance of the two newly released variety named BT19 and BT20 by Bangladesh Tea Research Institute. The experiment was conducted at Bangladesh Tea Research Institute experimental farm where four test clones namely Sh/D/11/313, A/8/8, A/17/7, A/22/39 and a well renowned Indian clone TV1 used as a control. The experimental result revealed that amongst the four test clones A/17/7 and A/8/8 are statistically more high yielder and drought tolerant than the control. A/17/7 is more high yielding than A/8/8 but A/8/8 is more drought tolerant. So considering yield, quality and drought potentials, the test clone A/17/7 and A/8/8 have recently released as BT19 and BT20 respectively which can be used as improved planting material in our tea growing areas by small growers and small holders to increase our production, quality as well as job opportunities and national income to eradicate our poverty.
Performance of Governor System on Minimizing Frequency Fluctuations with Wind Power Generation Sheikh, Dr. Md. Rafiqul Islam; Haque, Md. Mejbaul; Hossain, M.A.
International Journal of Electrical and Computer Engineering (IJECE) Vol 2, No 1: February 2012
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Original Source | Check in Google Scholar | Full PDF (680.817 KB)

Abstract

As wind turbine output is proportional to the cube of wind speed, the wind turbine generator output fluctuates due to wind speed variations. Hence, if the power capacity of wind power generators becomes large, wind power generator output can have an influence on the power system frequency. Therefore, this study investigates the influence of governor control systems of synchronous generators (SGs) for minimizing frequency fluctuations with high wind power penetration level, when a total capacity of SGs is considered as 100 MVA. It is seen that when both SGs operate as governor free (GF) operation, system perform better frequency control. But it can not be maintained to the acceptable level when SGs operate at GF-LFC or LFC-GF operation with wind power capacity about 5% of total capacity. Finally, it is seen that when several interconnected SGs are operated with different control modes, system frequency become more severe for 10% capacity of wind power.DOI:http://dx.doi.org/10.11591/ijece.v2i1.180