Papers by Mithulananthan Nadarajah
2020 8th International Electrical Engineering Congress (iEECON)
This paper presents an analysis of installation of solar powered charging station in power distri... more This paper presents an analysis of installation of solar powered charging station in power distribution system. The 9-bus primary distribution system was used to test the power flow using the Newton Raphson method, comparing the size and voltage angle with the DIgSILENT program. The 3-bus test system is used to analyze the installation of the charging station for a solar electric vehicle in distribution system. The power flow was analyzed by determining the solar energy source and the electric vehicle load in time series. The model of solar charge stations and the size of electric vehicles are determined at 100 kWh. The results of the power flow test using the Newton Raphson method found that the test results were in error by comparing the size and voltage angle with the DIgSILENT program that maximum value of at Bus no. 9 is 2.04% and -3.91%, respectively. While testing the analysis of solar powered charging station, it is found that the charging time will affect the power loss of the system and the maximum energy demand. The simulation, it is found that the suitable solar panel size must be greater than 7.39 kWp. Therefore, the electrical system design study using the PyPSA program to analyze of the solar powered charging station in distribution system shows the application in the design of the electrical system to support the load expansion from of electric vehicles and solar powered charging stations in the future.
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2019 9th International Conference on Power and Energy Systems (ICPES), 2019
Today’s power networks accommodate distributed generators at various locations, which has changed... more Today’s power networks accommodate distributed generators at various locations, which has changed the behavior of network operation, such as fault current characteristics. The changes in such characteristics can be different at different locations of a network depending upon the nearby generators, loads and network elements. Therefore it is necessary to assess the changes in network behavior due to integration of distributed generators. This paper investigates the impact of distributed generators on fault current characteristics of a power system. The fault characteristics are assessed by the calculation of equivalent X/R ratio across a terminal. The impact of connection of distributed generators on equivalent X/R ratio is demonstrated. The change in equivalent X/R ratio due to active and reactive power injections are assessed. The paper also investigates the appropriate location of distributed generators for better equivalent X/R characteristics. Similarly, hosting capacity of power networks based on the change in X/R ratio is demonstrated.
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2021 31st Australasian Universities Power Engineering Conference (AUPEC), 2021
The number of synchronous generators is anticipated to be reduced in the future power systems. Fa... more The number of synchronous generators is anticipated to be reduced in the future power systems. Factors such as favorable government policies and market's preference are driving enormous deployment of renewables, while there is very little interest in replacing coal fired power stations by the same type of power generators. These have culminated in the increased deployment of asynchronous generators in power systems. While these types of generators are environmentally friendly, they perform poorly in maintaining power system strength. This paper investigates the impact of photovoltaic (PV) generator on fault level as an indicator of system strength of a network. Various technological options for system strength improvement are discussed. It shows that system fault level can be supported by independent control of synchronous condenser's voltage and reactive power control. The paper also formulates an analytical control approach and demonstrates its suitability on a modified 35-bus utility system.
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IEEE Systems Journal, 2021
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Solar Energy, 2018
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Applied Energy, 2017
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2015 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2015
In Australia, grid integration of renewable energy (RE) resources has been very popular due to pu... more In Australia, grid integration of renewable energy (RE) resources has been very popular due to public awareness of climate change and favorable government policies. The initial mandatory renewable energy target (MRET) has been successful and there has been a revised target (RET) set for next decade. On the other hand, there are some regulatory and technical issues posing hindrances to the development of renewable resources. This paper discusses the opportunities and problems associated with renewable energy integration into Australia's National Electricity Market NEM. Issues such as the regulatory frameworks, access standards as per National Electricity Rules (NER), connection process, and transmission pricing frameworks are discussed.
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International Journal of Electrical Power & Energy Systems, 2015
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2010 9th International Power and Energy Conference, IPEC 2010, 2010
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2010 9th International Power and Energy Conference, IPEC 2010, 2010
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2011 IEEE PES Innovative Smart Grid Technologies, ISGT Asia 2011 Conference: Smarter Grid for Sustainable and Affordable Energy Future, 2011
ABSTRACT
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2012 IEEE 7th International Conference on Industrial and Information Systems (ICIIS), 2012
ABSTRACT This paper presents a strategy for optimal operation of distributed generation (DG) unit... more ABSTRACT This paper presents a strategy for optimal operation of distributed generation (DG) unit for minimizing distribution system power losses. An analytical approach is used to determine the optimal size and power factor of DG unit when it is placed at various locations. A computational procedure is also developed to identify the best placement at which the total system loss is the lowest. The proposed approach has been tested on a 33-bus distribution system. Importance of operating DG unit at appropriate power factor (PF) for minimizing power losses is first highlighted using an exhaustive load flow solution. The developed method is then used to calculate the optimal power factor. The results demonstrate the validity of the proposed approach in terms of optimal power factor, loss reduction and computational time. It is also shown that the optimal power factor operation can minimize power losses while achieving the optimum voltage profile enhancement and maximizing DG penetration.
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Renewable Energy, 2008
... Technical Note. Potential of sustainable energy technologies under CDM in Thailand: Opportuni... more ... Technical Note. Potential of sustainable energy technologies under CDM in Thailand: Opportunities and barriers. S. Adhikari a , N. Mithulananthan Corresponding Author Contact Information , a , E-mail The Corresponding Author , A. Dutta a and AJ Mathias a. ...
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IET Generation, Transmission & Distribution, 2011
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IEEE Transactions on Sustainable Energy, 2013
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IEEE Transactions on Industrial Electronics, 2013
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IEEE Transactions on Energy Conversion, 2013
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Papers by Mithulananthan Nadarajah