Dr. Nishant Kumar
Nishant Kumar (Member, IEEE) received the M.Tech. degree (Hons.) in electrical power systems from the National Institute of Technology Durgapur, India, in 2013, and the Ph.D. degree (Hons.) in power systems from the Department of Electrical Engineering, IIT Delhi, New Delhi, India, in 2019. He is currently working as a Post-doctoral Research Fellow with the National University of Singapore (NUS) Singapore.
From 2013 to 2014, he was the Project Engi- neer/Research Associate at IIT Bombay and IIT Delhi. His areas of research interests include soft computing-based generation control, optimization algorithm development, and application of soft com- puting techniques in power system planning, operation, and control. He has received the Gold Medal in M.Tech. degree from the National Institute of Technology Durgapur in 2013, the Best Thesis award in Ph.D. degree from IIT Delhi in 2019, First Prize in IEEE IAS Thesis Contest 2020 (Ph.D. Category), and the POSOCO Power System National Award (PPSA-2018) in Ph.D. Category from the Power Grid Corporation of India Limited in 2018.
From 2013 to 2014, he was the Project Engi- neer/Research Associate at IIT Bombay and IIT Delhi. His areas of research interests include soft computing-based generation control, optimization algorithm development, and application of soft com- puting techniques in power system planning, operation, and control. He has received the Gold Medal in M.Tech. degree from the National Institute of Technology Durgapur in 2013, the Best Thesis award in Ph.D. degree from IIT Delhi in 2019, First Prize in IEEE IAS Thesis Contest 2020 (Ph.D. Category), and the POSOCO Power System National Award (PPSA-2018) in Ph.D. Category from the Power Grid Corporation of India Limited in 2018.
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Journal paper
very complicated nonlinear optimization problem with huge number of constraints. This paper presents a
new hybrid approach of ’Gaussian Harmony Search’ (GHS) and ’Jumping Gene Transposition’ (JGT) algorithm
(GHS-JGT) for UC problem. In this proposed hybrid GHS-JGT for UC problem, scheduling variables
are handled in binary form and other constants directly through optimum conditions in decimal form.
The efficiency of this method is tested on ten units, forty units and hundred units test system.
Simulation results obtained by GHS-JGT algorithm for each case show a better generation cost in less time
interval, in comparison to the other existing results.
Conference paper
used to monitor large transformers for oil loss or insulation breakdown. The relay is located in an inclined pipe between the transformer and its oil conservation tank (located above the transformer). The Buchholz Relay is used as a protective device sensitive to the effects of a dielectric failure inside the equipment. However, the Buchholz relay has a few disadvantages. The relay produces a trip signal during earthquakes and is costly as well. Thus it is generally used only in the protection of power transformers. This paper suggests three modern and adaptive methods which are cheaper, efficient and robust. An additional merit is the Control signal (it can be controlled directly from the control room). The three types of methods are 1. Floating Body Mechanism based Relay circuit (N1), 2. Piezoelectric based relay circuit (N2), and 3. ULTRASONIC SENSOR based relay circuit (N3). These three methods are more applicable and reliable than Buchholz relay. The main advantage of these methods is that the relays are easy to manufacture for different sizes of transformers and controlling in all these three methods are outside the chamber containing the oil.
Small geothermal power plants in these zones can play a vital role to meet the rising demand of power across India. These geothermal plants should be efficient, they should be safe and the power generated must be cheap. For these reasons an attempt has been made in this paper to automatically control the generation of a geothermal power plant. For this purpose Programmable Logic Control (PLC) has been used.
The PLC was invented in response to the needs of the American automotive manufacturing industry. In 1968 GM Hydrometric (the automatic transmission division of General Motors) issued a request for proposal for an electronic replacement for hard-wired relay systems . The main reason for using PLC is cost effectiveness and safe operation. It can be used for full plant automation.
This includes speed control, load control, excitation control, turbine governing system, cooling towers, heat exchange mechanism, and control of the pump of the production well. It can be used for data recording, instrumentation and for protection purpose.PLC can also be used for remote operation as well as for continuous recording of data , for which only a simple pc interfaced with PLC is needed.
Thesis Chapters
With the advancement of technology, the processes are becoming more and more complex. The overall project is to develop a circuit to protect the electronic devices form power Quality problem like sag, swell, over voltage and under voltage condition automatically.
Poster
of overcoming the essential limitations of PT power ability by a combined operation of PTs needs to be examined. These studies could provide wide opportunities for PT exploitation in power electronic circuits.
The main objective of this research is to develop generic models of PT power converters. We examine the output and input networks of the PT converter by utilizing a PT equivalent circuit.
Obtaining PT equivalent circuit parameters from physical measurements is a problematic issue. Therefore, the first concern of the present work is to try to improve the earlier published methods of PT parameters determination in order to make them suitable for every kind of PT
and to the conditions under which the given PT operates. The study proposes and verifies two novel methods for extracting PT equivalent parameters from measurements.
A comparative analysis of the different types of rectifiers connected to the PT output is carried out in order to obtain generic models of PT AC/DC power converters. The
methodology applied in this study follows the approach in which the PT output rectifier network is represented by an equivalent circuit that loads the PT as the corresponding rectifier.
The unique nature of a PT allows innovative circuit design that ensures soft switching without matching inductors. This design substantially reduces the costs of electronic
components in the circuit. Therefore another aim of the research is to develop a generic approach for achieving soft switching with no additional reactive elements at the input.
To complete the work, the general requirements for the combined operation of several PTs are investigated.
very complicated nonlinear optimization problem with huge number of constraints. This paper presents a
new hybrid approach of ’Gaussian Harmony Search’ (GHS) and ’Jumping Gene Transposition’ (JGT) algorithm
(GHS-JGT) for UC problem. In this proposed hybrid GHS-JGT for UC problem, scheduling variables
are handled in binary form and other constants directly through optimum conditions in decimal form.
The efficiency of this method is tested on ten units, forty units and hundred units test system.
Simulation results obtained by GHS-JGT algorithm for each case show a better generation cost in less time
interval, in comparison to the other existing results.
used to monitor large transformers for oil loss or insulation breakdown. The relay is located in an inclined pipe between the transformer and its oil conservation tank (located above the transformer). The Buchholz Relay is used as a protective device sensitive to the effects of a dielectric failure inside the equipment. However, the Buchholz relay has a few disadvantages. The relay produces a trip signal during earthquakes and is costly as well. Thus it is generally used only in the protection of power transformers. This paper suggests three modern and adaptive methods which are cheaper, efficient and robust. An additional merit is the Control signal (it can be controlled directly from the control room). The three types of methods are 1. Floating Body Mechanism based Relay circuit (N1), 2. Piezoelectric based relay circuit (N2), and 3. ULTRASONIC SENSOR based relay circuit (N3). These three methods are more applicable and reliable than Buchholz relay. The main advantage of these methods is that the relays are easy to manufacture for different sizes of transformers and controlling in all these three methods are outside the chamber containing the oil.
Small geothermal power plants in these zones can play a vital role to meet the rising demand of power across India. These geothermal plants should be efficient, they should be safe and the power generated must be cheap. For these reasons an attempt has been made in this paper to automatically control the generation of a geothermal power plant. For this purpose Programmable Logic Control (PLC) has been used.
The PLC was invented in response to the needs of the American automotive manufacturing industry. In 1968 GM Hydrometric (the automatic transmission division of General Motors) issued a request for proposal for an electronic replacement for hard-wired relay systems . The main reason for using PLC is cost effectiveness and safe operation. It can be used for full plant automation.
This includes speed control, load control, excitation control, turbine governing system, cooling towers, heat exchange mechanism, and control of the pump of the production well. It can be used for data recording, instrumentation and for protection purpose.PLC can also be used for remote operation as well as for continuous recording of data , for which only a simple pc interfaced with PLC is needed.
With the advancement of technology, the processes are becoming more and more complex. The overall project is to develop a circuit to protect the electronic devices form power Quality problem like sag, swell, over voltage and under voltage condition automatically.
of overcoming the essential limitations of PT power ability by a combined operation of PTs needs to be examined. These studies could provide wide opportunities for PT exploitation in power electronic circuits.
The main objective of this research is to develop generic models of PT power converters. We examine the output and input networks of the PT converter by utilizing a PT equivalent circuit.
Obtaining PT equivalent circuit parameters from physical measurements is a problematic issue. Therefore, the first concern of the present work is to try to improve the earlier published methods of PT parameters determination in order to make them suitable for every kind of PT
and to the conditions under which the given PT operates. The study proposes and verifies two novel methods for extracting PT equivalent parameters from measurements.
A comparative analysis of the different types of rectifiers connected to the PT output is carried out in order to obtain generic models of PT AC/DC power converters. The
methodology applied in this study follows the approach in which the PT output rectifier network is represented by an equivalent circuit that loads the PT as the corresponding rectifier.
The unique nature of a PT allows innovative circuit design that ensures soft switching without matching inductors. This design substantially reduces the costs of electronic
components in the circuit. Therefore another aim of the research is to develop a generic approach for achieving soft switching with no additional reactive elements at the input.
To complete the work, the general requirements for the combined operation of several PTs are investigated.