2019 3rd International Conference on Trends in Electronics and Informatics (ICOEI)
The goal of this paper is to create an online realtime photovoltaic monitoring system. This is ac... more The goal of this paper is to create an online realtime photovoltaic monitoring system. This is achieved by designing a photovoltaic system, building the analog circuitry for proper voltage, current, solar radiation and temperature readings, and creating a analysis datalogging that displays the monitored data in a user-friendly charting interface. The communication interface is in 2 wire protocol and could therefore be accessed numbers of solar panel. The project could potentially be adapted to service different types of photovoltaic systems to insure proper functioning and data monitoring.
Variable characteristics of turbine for different wind speeds have different operating point. Max... more Variable characteristics of turbine for different wind speeds have different operating point. Maximum power thus can’t be assured at all points of operat ion. But MPPT algorithm pushes the electronic dc-dc convertor to provide higher power output by adjusting duty cycle of buck/boost convertor connected before load. MATLAB simulations have been investigated and results show a higher power output compared to the system witho ut MPPT.
Abstract—Variable characteristics of turbine for different wind speeds have different operating p... more Abstract—Variable characteristics of turbine for different wind speeds have different operating point. Maximum power thus can’t be assured at all points of operation. But MPPT algorithm pushes the electronic dc-dc convertor to provide higher power output by adjusting duty cycle of buck/boost convertor connected before load. MATLAB simulations have been investigated and results show a higher power output compared to the system without MPPT.
2015 International Conference on Power, Instrumentation, Control and Computing (PICC), 2015
Complexity of power system is increasing due to expansion of interconnections. Blackouts and casc... more Complexity of power system is increasing due to expansion of interconnections. Blackouts and cascaded failures are associated with divergent situations in power system. Dynamics of power system pushes the behavior differently under different values of parameters such as increase in load demand at very sensitive bus in power system which may trigger exponential rise in power flows through lines leading to cascaded outages one after other. To study impact of power demand at sensitive bus causing divergent flow over lines, paper proposes chaotic performance index as a watchdog for relative divergent trend of power flow assessment. This will help power system planners to formulate artificial intelligent ways to identify weak chaotic bus and most vulnerable line showing divergent growth of power flow in a given power system network. This paper proposes discrete Largest Lyapunov Exponent based computation for dynamic security assessment. For a particular outage one can identify the most v...
This paper presents a novel technique of multipoint temperature control employing the PID. This t... more This paper presents a novel technique of multipoint temperature control employing the PID. This technique serves to enhance the efficiency and performance of heaters. In industry the Heater plays a significant role. For instance, in a big industry such as cement industry requiring furnaces, the heater supplies the heating. The industry uses a huge number of heaters for various purposes. In the ancient method of heating, the many number of heaters used to be connected and individual power supply was required for each heater. But in the proposed new technique presented in this paper, a number of heaters work on the supply of a single heater power employing the time sharing mode. Here, heaters turn ON and OFF as per the set point, conserving power and lessening heat loss. And to achieve this, our proposed technique of multipoint temperature control using the PID is advanced. Thus, this project focuses on the scenario where a number of heaters are connected and constant temperature is b...
The goal of this paper is to create an online realtime photovoltaic monitoring system. This is ac... more The goal of this paper is to create an online realtime photovoltaic monitoring system. This is achieved by designing a photovoltaic system, building the analog circuitry for proper voltage, current, solar radiation and temperature readings, and creating a analysis datalogging that displays the monitored data in a user-friendly charting interface. The communication interface is in 2 wire protocol and could therefore be accessed numbers of solar panel. The project could potentially be adapted to service different types of photovoltaic systems to insure proper functioning and data monitoring.
Power system is subjected to transition in different states in real time. Owing to this, power li... more Power system is subjected to transition in different states in real time. Owing to this, power line flows may lead to chaotic divergent situations leading towards cascade failure or blackout. Chaotic monitoring performance index needs importance in light of past failures or blackout experiences for assessing divergent dynamic situations involving high complexity in existing power system state. At present multi bus power system security assessment is done based on MW performance index. It needs to be aided in view of recent blackouts. This paper proposes discrete Largest Lyapunov Exponent as supportive chaotic index to monitor exponential divergent power flow apart from usual MW performance index for dynamic security assessment. Combined MW-Chaotic performance index will highlight closeness to cascaded failure or blackout apart from overload limit violation indices. Algorithm formulated for combined performance index will help Power System Utilities to arrive at vigilant monitoring about futuristic failures and blackouts. IEEE 14 bus power system is analysed in the paper and results clearly demonstrate the efficacy of such monitoring index.
2016 IEEE 6th International Conference on Power Systems (ICPS), 2016
The proposed modeling of LOE relay operation is negative offset mho distance relay with two zones... more The proposed modeling of LOE relay operation is negative offset mho distance relay with two zones. The operation of loss of excitation relay will be delayed because of the existence of shunt FACTS devices along with the power system network proposed in this paper. This delay avoids mal-operation of the relay especially from power swings and allows field recovering synchronous generators to regain their capability. Due to presence of shunt FACTS devices, there are chances of mal-operation of LOE relay and it is expected that loss of excitation relay should not operate under any abnormality except excitation failure. This poses a challenging task for power system protection. The coordination between shunt FACTS devices and loss of excitation relay is discussed and modeled for proper discrimination in paper along with results of simulation strategy.
2019 3rd International Conference on Trends in Electronics and Informatics (ICOEI)
The goal of this paper is to create an online realtime photovoltaic monitoring system. This is ac... more The goal of this paper is to create an online realtime photovoltaic monitoring system. This is achieved by designing a photovoltaic system, building the analog circuitry for proper voltage, current, solar radiation and temperature readings, and creating a analysis datalogging that displays the monitored data in a user-friendly charting interface. The communication interface is in 2 wire protocol and could therefore be accessed numbers of solar panel. The project could potentially be adapted to service different types of photovoltaic systems to insure proper functioning and data monitoring.
Variable characteristics of turbine for different wind speeds have different operating point. Max... more Variable characteristics of turbine for different wind speeds have different operating point. Maximum power thus can’t be assured at all points of operat ion. But MPPT algorithm pushes the electronic dc-dc convertor to provide higher power output by adjusting duty cycle of buck/boost convertor connected before load. MATLAB simulations have been investigated and results show a higher power output compared to the system witho ut MPPT.
Abstract—Variable characteristics of turbine for different wind speeds have different operating p... more Abstract—Variable characteristics of turbine for different wind speeds have different operating point. Maximum power thus can’t be assured at all points of operation. But MPPT algorithm pushes the electronic dc-dc convertor to provide higher power output by adjusting duty cycle of buck/boost convertor connected before load. MATLAB simulations have been investigated and results show a higher power output compared to the system without MPPT.
2015 International Conference on Power, Instrumentation, Control and Computing (PICC), 2015
Complexity of power system is increasing due to expansion of interconnections. Blackouts and casc... more Complexity of power system is increasing due to expansion of interconnections. Blackouts and cascaded failures are associated with divergent situations in power system. Dynamics of power system pushes the behavior differently under different values of parameters such as increase in load demand at very sensitive bus in power system which may trigger exponential rise in power flows through lines leading to cascaded outages one after other. To study impact of power demand at sensitive bus causing divergent flow over lines, paper proposes chaotic performance index as a watchdog for relative divergent trend of power flow assessment. This will help power system planners to formulate artificial intelligent ways to identify weak chaotic bus and most vulnerable line showing divergent growth of power flow in a given power system network. This paper proposes discrete Largest Lyapunov Exponent based computation for dynamic security assessment. For a particular outage one can identify the most v...
This paper presents a novel technique of multipoint temperature control employing the PID. This t... more This paper presents a novel technique of multipoint temperature control employing the PID. This technique serves to enhance the efficiency and performance of heaters. In industry the Heater plays a significant role. For instance, in a big industry such as cement industry requiring furnaces, the heater supplies the heating. The industry uses a huge number of heaters for various purposes. In the ancient method of heating, the many number of heaters used to be connected and individual power supply was required for each heater. But in the proposed new technique presented in this paper, a number of heaters work on the supply of a single heater power employing the time sharing mode. Here, heaters turn ON and OFF as per the set point, conserving power and lessening heat loss. And to achieve this, our proposed technique of multipoint temperature control using the PID is advanced. Thus, this project focuses on the scenario where a number of heaters are connected and constant temperature is b...
The goal of this paper is to create an online realtime photovoltaic monitoring system. This is ac... more The goal of this paper is to create an online realtime photovoltaic monitoring system. This is achieved by designing a photovoltaic system, building the analog circuitry for proper voltage, current, solar radiation and temperature readings, and creating a analysis datalogging that displays the monitored data in a user-friendly charting interface. The communication interface is in 2 wire protocol and could therefore be accessed numbers of solar panel. The project could potentially be adapted to service different types of photovoltaic systems to insure proper functioning and data monitoring.
Power system is subjected to transition in different states in real time. Owing to this, power li... more Power system is subjected to transition in different states in real time. Owing to this, power line flows may lead to chaotic divergent situations leading towards cascade failure or blackout. Chaotic monitoring performance index needs importance in light of past failures or blackout experiences for assessing divergent dynamic situations involving high complexity in existing power system state. At present multi bus power system security assessment is done based on MW performance index. It needs to be aided in view of recent blackouts. This paper proposes discrete Largest Lyapunov Exponent as supportive chaotic index to monitor exponential divergent power flow apart from usual MW performance index for dynamic security assessment. Combined MW-Chaotic performance index will highlight closeness to cascaded failure or blackout apart from overload limit violation indices. Algorithm formulated for combined performance index will help Power System Utilities to arrive at vigilant monitoring about futuristic failures and blackouts. IEEE 14 bus power system is analysed in the paper and results clearly demonstrate the efficacy of such monitoring index.
2016 IEEE 6th International Conference on Power Systems (ICPS), 2016
The proposed modeling of LOE relay operation is negative offset mho distance relay with two zones... more The proposed modeling of LOE relay operation is negative offset mho distance relay with two zones. The operation of loss of excitation relay will be delayed because of the existence of shunt FACTS devices along with the power system network proposed in this paper. This delay avoids mal-operation of the relay especially from power swings and allows field recovering synchronous generators to regain their capability. Due to presence of shunt FACTS devices, there are chances of mal-operation of LOE relay and it is expected that loss of excitation relay should not operate under any abnormality except excitation failure. This poses a challenging task for power system protection. The coordination between shunt FACTS devices and loss of excitation relay is discussed and modeled for proper discrimination in paper along with results of simulation strategy.
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Papers by Sunil Nangrani