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Co-Authors
- Chintalapudi V. Suresh
- S. Sivanagaraju
- U. Ramanaiah
- J. John
- V. Thamarai
- M. M. Mehra
- Teena Choudhary
- Ashwini Jambhalikar
- Gogulapati Supriya
- Gaurav Saxena
- K. V. Shila
- B. Ramesh
- T. K. Pratheek
- Deepak Kumar Sharma
- R. Islam
- P. Selvaraj
- A. Kalpana
- S. Ajith Kumar
- K. V. Sriram
- A. S. Laxmiprasad
- B. Anitha
- Supriya Gogulapati
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Giridhar, M. S.
- Analyzing the Effect of Distributed Generators on Economical and Technical Aspects of Distribution Systems
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Authors
Affiliations
1 Department of EEE, Vasireddy Venkatadri Institute of Technology, Guntur – 522508, Andhra Pradesh, IN
2 Department of EEE, Lakireddy Bali Reddy college of Engineering, Mylavaram, Vijayawada – 521230, Andhra Pradesh, IN
3 Department of EEE, UCEK, JNTUK, Kakinada – 533003, Andhra Pradesh, IN
4 EEE, Vasireddy Venkatadri Institute of Technology, Guntur – 522508, Andhra Pradesh, IN
1 Department of EEE, Vasireddy Venkatadri Institute of Technology, Guntur – 522508, Andhra Pradesh, IN
2 Department of EEE, Lakireddy Bali Reddy college of Engineering, Mylavaram, Vijayawada – 521230, Andhra Pradesh, IN
3 Department of EEE, UCEK, JNTUK, Kakinada – 533003, Andhra Pradesh, IN
4 EEE, Vasireddy Venkatadri Institute of Technology, Guntur – 522508, Andhra Pradesh, IN
Source
Indian Journal of Science and Technology, Vol 10, No 25 (2017), Pagination:Abstract
Objectives: This paper presents a two stage solution strategy to solve multi objective optimization problem in the presence of Distributed Generators (DG) in planning a primary distribution system. Methods/Statistical Analysis: Using this, the economical aspects such as net savings and the technical aspects such as voltage deviation and section current index objectives are optimized while satisfying system equality and in-equality constraints. The optimum number of DGs and its optimal locations are identified in a given system so as to enhance the system security by minimizing the system power losses. The proposed methodology uses fuzzy decision approach to select the best compromised solution from the total generation Pareto solution as per the operators' requirement. Findings: According to the analytical results, the proposed framework in the presence of DGs enhances the system performance more effectively. Application/Improvements: The feasibility and effectiveness of the proposed method are examined on standard 15-node, 33-node and 69-node test systems.Keywords
Effect of Distributed Generators, NSMCSA, Optimal Placement, Savings, Section Current Index, Voltage Deviation.- Instrument for Lunar Seismic Activity Studies on Chandrayaan-2 Lander
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Authors
J. John
1,
V. Thamarai
1,
M. M. Mehra
1,
Teena Choudhary
1,
M. S. Giridhar
1,
Ashwini Jambhalikar
1,
Gogulapati Supriya
1,
Gaurav Saxena
1,
K. V. Shila
1,
B. Ramesh
1,
T. K. Pratheek
1,
Deepak Kumar Sharma
1,
R. Islam
1,
P. Selvaraj
1,
A. Kalpana
1,
S. Ajith Kumar
1,
K. V. Sriram
1,
A. S. Laxmiprasad
1
Affiliations
1 Laboratory for Electro-Optics Systems, Indian Space Research Organisation, Peenya 1st Stage, 1st Cross, Bengaluru 560 058, IN
1 Laboratory for Electro-Optics Systems, Indian Space Research Organisation, Peenya 1st Stage, 1st Cross, Bengaluru 560 058, IN
Source
Current Science, Vol 118, No 3 (2020), Pagination: 376-382Abstract
Instrument for Lunar Seismic Activity Studies (ILSA) is a science payload with the objective of studying seismic activities at the landing site of Vikram, the Lander of Chandrayaan-2. ILSA will be deployed to the lunar surface by a specially built mechanism. It is an indigenously developed instrument based on microelectro mechanical systems technology. High sensitivity silicon micro-machined accelerometer is the heart of the instrument that measures ground acceleration due to lunar quakes. The instrument has the capability of resolving acceleration better than 100 nano-g Hz–1/2 up to a range of 0.5 g over bandwidth of 40 Hz. This paper presents the basic concepts in the design, realization, characterization and the performance test results of the space qualified strong motion seismic sensors.Keywords
Lunar Quakes, MEMS, Seismometer, Strong Motion Sensors.References
- Bulow, R. C. et al., New events discovered in the Apollo lunar seismic data. J. Geophys. Res., 2005, 110, E10003.
- Yamada, R., The description of Apollo seismic experiments; www.darts.isas.jaxa.jp/planet.seismology.
- Watters, T. R. et al., Shallow seismic activity and young thrust faults on the Moon. Nature Geosci., 2019, 12, 411–417; https://www.nature.com/articles/s41561-019-0362-2.pdf
- Lognonne, P. et al., SEIS: insight’s seismic experiment for internal structure of mars. Space Sci. Rev., 2019, 215, 12; https:// doi.org/10.1007/s11214-018-0574-6
- Measuring seismic activity on Venus: a real challenge; https://www.seis-insight.eu/en/public-2/planetary-seismology/venus
- Hunter, G. et al., Development of a high temperature Venus seismometer and extreme environment testing chamber. International Workshop on Instrumentation for Planetary Missions, 2012.
- Havskov, J. and Alguacil, G., Instrumentation in Earthquake Seismology, Springer, June 2002; doi:10.1007/978-3-319-21314-9, ISBN 1402029683.
- Kumar, S., Design and Fabrication of Micromcahined Silicon Suspensions, Ph D thesis, Imperial College, London, 2007.
- Kempe, V., Inertial MEMS Principles and Practice, Cambridge University Press.
- Kulah, H. et al., Noise analysis and characterization of a sigmadelta capacitive microaccelerometer. IEEE J. Solid-State Circuits, 2006, 41(2), 352–361.
- John, J. et al., Design and fabrication of silicon micro structure for seismometer, ISSS International Conference on Smart Materials, Structures and Systems, Bengaluru, 2014.
- IEEE standard specification format guide and test procedure for linear single axis nongyroscopic accelerometers IEEE Std 1293, 1998 (R2008).
- Computational Study on Ion Dynamics of Mems Quadrupole Mass Filter
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Authors
B. Anitha
1,
Supriya Gogulapati
1,
Deepak Kumar Sharma
1,
J. John
1,
M. S. Giridhar
1,
Ashwini Jambhalikar
1
Affiliations
1 MEMS Development Division, Laboratory for Electro-Optics Systems (LEOS), ISRO, Bangalore, IN
1 MEMS Development Division, Laboratory for Electro-Optics Systems (LEOS), ISRO, Bangalore, IN