Overcurrent Relays Coordination of Interconnected Power System using Modified Objective Functions and Multiple Standardized Tripping Curves Shanker D. Godwal, Kartik S. Pandya, Santosh C. Vora, Chintan R. Mehta, Vipul N Rajput 1st International Conference on Sustainable Energy Technologies and Computational Intelligence Towards Sustainable Energy Transition Setcom 2025, 2025 Over the last few decades, many researchers opt various techniques to achieve optimum time for coordination of overcurrent relays. The main motive of these techniques is to avoid mal operation among the main and secondary relays and to reduce time of operation of each relay as per required criteria. Some researchers have suggested modification in relay characteristics and objective functions to avoid mis-coordination. Three objective functions from the literature are examined in this paper, and new modified objective functions are the suggested after modification. A comparison is made between the standard objective function with modified obje ctive functions. Out of three modified objective functions, the best modified objective function is proposed. Further, three IEC standard relay characteristics have been adopted to analyze & compare the effectiveness & robustness of said objective functions. For the said comparison IEEE 14-bus modified distribution system is considered and a Harmony search algorithm is used.
Challenges and Mitigation Technique in Overcurrent Relay Coordination for Low Voltage Radial Systems Megha Jaiswal, Shanker D. Godwal, Akhilesh A. Nimje, Sarika S. Kanojia, Siddharth Mehta, Maitry Patel 3rd International Conference on Power Electronics and Energy Icpee 2025, 2025 Overcurrent protection in low voltage and radial distribution systems often faces challenges, particularly in ensuring proper coordination between primary and backup relays. One significant issue is the miscoordination that arises despite appropriate selection of plug settings for both relays. This miscoordination is primarily due to the uncertain pickup range inherent in overcurrent relays. In this paper, this problem is thoroughly investigated. A solution is proposed to address the issue of uncertain pickup ranges in overcurrent relays. To evaluate the proposed approach and validate, one radial feeder is considered. Further, three various relay characteristic of over current relays, normal inverse, very inverse and extremely inverse have been considered. Furthermore, Harmonic Search Algorithm, Genetic Algorithm, and electromagnetic field optimization are employed to achieve the optimal settings for both plug setting multipliers (PSMs) and time dial settings (TDSs), ensuring reliable relay coordination.
Optimum Overcurrent Relay Coordination of Nine Bus Test System using Proper System Fault Current Maitry Patel, Shanker D. Godwal, Akhilesh A. Nimje, Soumesh Chatterjee, Megha Jaiswal, Siddharth Mehta 3rd International Conference on Power Electronics and Energy Icpee 2025, 2025 Coordination of overcurrent relays are now days very crucial these days as huge penetration of renewable energy sources. Further, this becomes more complex as it ideal with coordinating overcurrent relays considering primary and backup relays. In this paper coordination of overcurrent relays has been discussed. Previously, most of the researchers have adopted varying fault current data of 9 bus test systems. In this paper, using more proper fault current data of 9 bus test system and modified objective function, the coordination of overcurrent relays is achieved. Results convey that if fault current are not taken proper for particular system, it will lead to miscoordination between the relays.
A Method to Formulate Accurate Problem Statement for Overcurrent Relay Coordination Shanker D. Godwal, Soumesh Chatterjee, Akhilesh A. Nimje 2024 IEEE 4th International Conference on Sustainable Energy and Future Electric Transportation Sefet 2024, 2024 Recently many researchers have proposed modifications in objective functions and constraints to improve mathematical formulation of overcurrent relay coordination. Unfortunately, some of them are not as per the required criteria for coordination of overcurrent relays. This paper brings one such issue related to objective function where required criteria is not matched. Moreover, many researchers without considering the technical requirements of overcurrent relay coordination have modified objective function. In this paper, these requirements have been explored and based on the same, a new objective function has been proposed with conventional constraint. In proposed objective function, these technical requirements are taken care and optimum relay setting parameters are obtained satisfying conventional constraints. Further, to evaluate the effectiveness of proposed method, the objective function has been used for IEEE 8-bus distribution system. To achieve optimum setting of the relays, i.e., plug setting and time multiplier setting, genetic algorithm is used. Obtained results are compared with slime module algorithm and water cycle algorithm. Based on results, it is found that proposed objective function produce better results as compared to slime module and water cycle algorithms.
Optimum Overcurrent Relays Coordination of Radial and Parallel Distribution Systems Chandrodai Jangid, Shanker Godwal, Soumesh Chatterjee, Akhilesh Nimje 2024 IEEE Students Conference on Engineering and Systems Interdisciplinary Technologies for Sustainable Future Sces 2024, 2024 Coordination of overcurrent relays plays very important role in protection of transmission lines. The main task of coordination is to achieve optimum setting of overcurrent relays parameters. These parameters are mainly known as plug setting and time setting multiplier. Right selection of these parameters will give optimum operating time of overcurrent relays and completely avoid miscoordination between primary and backup relays. In this paper, optimum setting of overcurrent relays of radial and parallel feeders is achieved and further, these setting are being compared with prototype hardware models of radial and parallel feeders. To obtained relays setting one objective function is being proposed which avoid the miscoordination between primary and backup relays and further same proposed objective function is examined on prototype model to know the effectiveness of it. To achieve optimum setting for proto type models, Siemens 7SR1003 and 7SR1004 non-directional and directional overcurrent relays are used. It is found that practical settings are matching with expected results and alien in required range. For optimum setting of overcurrent relays genetic algorithm is used.
Optimizing Load Profiles for Improved Demand Response: A Comparative Study of Residential and Factory Scenarios Akshat Gupta, Dinkar Rathi, Soumesh Chatterjee, Rupali Brahmachary, Shanker D. Godwal 2024 IEEE 4th International Conference on Sustainable Energy and Future Electric Transportation Sefet 2024, 2024 This paper examines the application of optimization techniques in demand side management (DSM) to optimize electricity consumption and load profiles in residential and factory settings. DSM plays a crucial role in achieving energy efficiency and cost reduction. The research focuses on load profile optimization for various scenarios, such as residential summer, winter, weekday, and weekend, as well as factory weekday and weekend scenarios, aiming to optimize load distribution over a 24-hour period. To achieve load profile optimization. By comparing load profiles before and after optimization, taking into account associated price variations, the paper identifies an improved elastic load profile. This tailored approach allows consumers to choose their preferred load management scenario based on the prices associated with different cases. The analysis presented in this paper facilitates the selection of the most suitable load management option for consumers, considering both cost-effectiveness and energy efficiency. By empowering consumers with price comparisons, they can make informed decisions regarding their daily load demand, striking a balance between cost and efficiency.
Detection of Power System Events Using Bagged Tree Classifier Mayur Panchal, Soumesh Chatterjee, Rupali Brahmachary, Shanker D. Godwal, Akhilesh A. Nimje 2024 IEEE 3rd International Conference on Electrical Power and Energy Systems Icepes 2024, 2024 The detection of events is crucial for robust operation and fast restoration of power system. This paper focuses on the identification of power system events, using an ensemble technique, i.e., bagged tree classifier. Five possible events have been considered in this work, which includes line trip, load trip, generator trip, fault, and transformer trip. The various events have been created in IEEE 9-bus system and data have been recorded through phasor measurement units (PMUs). The consideration of all five power system events assures robustness of the proposed method. The IEEE 9-bus system has been modelled and simulated in MATLAB/Simulink platform. The proposed approach promises excellent detection accuracy.
Solving of economical load dispatch using efficient group leader optimization technique Technologies for Sustainable Development Proceedings of the 7th Nirma University International Conference on Engineering Nuicone 2019, 2019
Challenges and Mitigation Technique in Overcurrent Relay Coordination for Low Voltage Radial Systems M Jaiswal, SD Godwal, AA Nimje, SS Kanojia, S Mehta, M Patel 2025 International Conference on Power Electronics and Energy (ICPEE), 1-6 , 2025 2025
Optimum Overcurrent Relay Coordination of Nine Bus Test System using Proper System Fault Current M Patel, SD Godwal, AA Nimje, S Chatterjee, M Jaiswal, S Mehta 2025 International Conference on Power Electronics and Energy (ICPEE), 1-6 , 2025 2025
Overcurrent Relays Coordination of Interconnected Power System using Modified Objective Functions and Multiple Standardized Tripping Curves SD Godwal, KS Pandya, SC Vora, CR Mehta, VN Rajput 2025 International Conference on Sustainable Energy Technologies and … , 2025 2025 Citations: 1
Optimizing load profiles for improved demand response: A comparative study of residential and factory scenarios A Gupta, D Rathi, S Chatterjee, R Brahmachary, SD Godwal 2024 IEEE 4th International Conference on Sustainable Energy and Future … , 2024 2024 Citations: 1
A method to formulate accurate problem statement for overcurrent relay coordination SD Godwal, S Chatterjee, AA Nimje 2024 IEEE 4th International Conference on Sustainable Energy and Future … , 2024 2024 Citations: 2
Detection of Power System Events Using Bagged Tree Classifier M Panchal, S Chatterjee, R Brahmachary, SD Godwal, AA Nimje 2024 IEEE 3rd International Conference on Electrical Power and Energy … , 2024 2024
Optimum Overcurrent Relays Coordination of Radial and Parallel Distribution Systems C Jangid, S Godwal, S Chatterjee, A Nimje 2024 IEEE Students Conference on Engineering and Systems (SCES), 1-6 , 2024 2024 Citations: 1
Impact of Various European and North American Standard Overcurrent Relays Characteristics on Optimum Coordination of DOCR S Chatterjee, SD Godwal, SS Kanojia, AA Nimje, KS Pandya, ... 2024 International Conference on Computer, Electronics, Electrical … , 2024 2024
Power flow control and power oscillation damping in a 2-machine system using SSSC during faults K Sharma, AA Nimje, SD Godwal Energy Harvesting and Systems 10 (2), 291-301 , 2023 2023
Optimal overcurrent relay coordination for interconnected power systems: A proper approach and improved technique SD Godwal, KS Pandya, SC Vora, CR Mehta, VR Rajput e-Prime-Advances in Electrical Engineering, Electronics and Energy 5, 100248 , 2023 2023 Citations: 17
Issues and solutions for optimum overcurrent relays co-ordination in medium voltage radial distribution system SD Godwal, KS Pandya International Conference on Electric Power and Renewable Energy, 57-69 , 2023 2023 Citations: 5
Design and analysis of power distribution systems for optimum over-current relay coordination using voltage component of fault current limiters SD Godwal, KS Pandya, AA Nimje, VN Rajput International journal of advanced technology and engineering exploration 10 … , 2023 2023 Citations: 7
Networks Using Soft Computing S Godwal, SS Kanojia, AA Nimje Soft Computing and Optimization: SCOTA 2021, Ranchi, India, March 26–27, 13 , 2023 2023
Overcurrent Relay Coordination and Adaptive Relay Setting of Distributed Network Using Multiple Standardized Tripping Relays and Improved Mathematical Formulation SD Godwal, KS Pandya International Conference on Sustainable Technology and Advanced Computing in … , 2023 2023 Citations: 7
Optimum overcurrent relay coordination for radial distribution networks using improved mathematical formulation SD Godwal, KS Pandya, SC Vora, CR Mehta, VN Rajput International Conference on Sustainable Technology and Advanced Computing in … , 2023 2023 Citations: 3
An approach to improve mathematical formulation of directional overcurrent relays coordination for interconnected power systems SD Godwal, KS Pandya, VN Rajput, SC Vora, CR Mehta International Journal of Ambient Energy 43 (1), 7899-7909 , 2022 2022 Citations: 15
Contingency analysis: A tool to improve power system security R Patel, A Nimje, S Godwal, S Kanojia Smart Technologies for Power and Green Energy: Proceedings of STPGE 2022, 79-92 , 2022 2022 Citations: 14
An Industrial Perspective on Restructured Power Systems Using Soft Computing Techniques K Bhattacharjee, AA Nimje, SD Godwal, S Tanwar The Industrial Internet of Things (IIoT) Intelligent Analytics for … , 2022 2022
Particle Swarm Optimization Based Self-tuned PID Controller for Digital Excitation Control System SK Solanki, SS Kanojia, S Godwal, A Nimje, V Patel International Conference on Electrical and Electronics Engineering, 248-256 , 2022 2022
Optimum over current relays coordination for radial distribution networks using soft computing techniques S Godwal, SS Kanojia, AA Nimje Virtual International Conference on Soft Computing, Optimization theory and … , 2021 2021 Citations: 7
MOST CITED SCHOLAR PUBLICATIONS
A review on approaches employed for solving directional overcurrent relays’ coordination problem SD Godwal, KS Pandya, VN Rajput, SC Vora Advances in Electric Power and Energy Infrastructure: Proceedings of ICPCCI … , 2020 2020 Citations: 37
Optimal overcurrent relay coordination for interconnected power systems: A proper approach and improved technique SD Godwal, KS Pandya, SC Vora, CR Mehta, VR Rajput e-Prime-Advances in Electrical Engineering, Electronics and Energy 5, 100248 , 2023 2023 Citations: 17
An approach to improve mathematical formulation of directional overcurrent relays coordination for interconnected power systems SD Godwal, KS Pandya, VN Rajput, SC Vora, CR Mehta International Journal of Ambient Energy 43 (1), 7899-7909 , 2022 2022 Citations: 15
Contingency analysis: A tool to improve power system security R Patel, A Nimje, S Godwal, S Kanojia Smart Technologies for Power and Green Energy: Proceedings of STPGE 2022, 79-92 , 2022 2022 Citations: 14
Design and analysis of power distribution systems for optimum over-current relay coordination using voltage component of fault current limiters SD Godwal, KS Pandya, AA Nimje, VN Rajput International journal of advanced technology and engineering exploration 10 … , 2023 2023 Citations: 7
Overcurrent Relay Coordination and Adaptive Relay Setting of Distributed Network Using Multiple Standardized Tripping Relays and Improved Mathematical Formulation SD Godwal, KS Pandya International Conference on Sustainable Technology and Advanced Computing in … , 2023 2023 Citations: 7
Optimum over current relays coordination for radial distribution networks using soft computing techniques S Godwal, SS Kanojia, AA Nimje Virtual International Conference on Soft Computing, Optimization theory and … , 2021 2021 Citations: 7
Issues and solutions for optimum overcurrent relays co-ordination in medium voltage radial distribution system SD Godwal, KS Pandya International Conference on Electric Power and Renewable Energy, 57-69 , 2023 2023 Citations: 5
Optimum overcurrent relay coordination for radial distribution networks using improved mathematical formulation SD Godwal, KS Pandya, SC Vora, CR Mehta, VN Rajput International Conference on Sustainable Technology and Advanced Computing in … , 2023 2023 Citations: 3
Solving of economical load dispatch using efficient group leader optimization technique K Shah, K Bhattacharjee, S Godwal Technologies for Sustainable Development, 181-186 , 2020 2020 Citations: 3
Analysis of electromagnetic repulsion force for enhancement in repulsion threshold current of contact system in MCCB HT Mehta, S Godwal 2015 5th Nirma University International Conference on Engineering (NUiCONE), 1-5 , 2015 2015 Citations: 3
A method to formulate accurate problem statement for overcurrent relay coordination SD Godwal, S Chatterjee, AA Nimje 2024 IEEE 4th International Conference on Sustainable Energy and Future … , 2024 2024 Citations: 2
Overcurrent Relays Coordination of Interconnected Power System using Modified Objective Functions and Multiple Standardized Tripping Curves SD Godwal, KS Pandya, SC Vora, CR Mehta, VN Rajput 2025 International Conference on Sustainable Energy Technologies and … , 2025 2025 Citations: 1
Optimizing load profiles for improved demand response: A comparative study of residential and factory scenarios A Gupta, D Rathi, S Chatterjee, R Brahmachary, SD Godwal 2024 IEEE 4th International Conference on Sustainable Energy and Future … , 2024 2024 Citations: 1
Optimum Overcurrent Relays Coordination of Radial and Parallel Distribution Systems C Jangid, S Godwal, S Chatterjee, A Nimje 2024 IEEE Students Conference on Engineering and Systems (SCES), 1-6 , 2024 2024 Citations: 1
Challenges and Mitigation Technique in Overcurrent Relay Coordination for Low Voltage Radial Systems M Jaiswal, SD Godwal, AA Nimje, SS Kanojia, S Mehta, M Patel 2025 International Conference on Power Electronics and Energy (ICPEE), 1-6 , 2025 2025
Optimum Overcurrent Relay Coordination of Nine Bus Test System using Proper System Fault Current M Patel, SD Godwal, AA Nimje, S Chatterjee, M Jaiswal, S Mehta 2025 International Conference on Power Electronics and Energy (ICPEE), 1-6 , 2025 2025
Detection of Power System Events Using Bagged Tree Classifier M Panchal, S Chatterjee, R Brahmachary, SD Godwal, AA Nimje 2024 IEEE 3rd International Conference on Electrical Power and Energy … , 2024 2024
Impact of Various European and North American Standard Overcurrent Relays Characteristics on Optimum Coordination of DOCR S Chatterjee, SD Godwal, SS Kanojia, AA Nimje, KS Pandya, ... 2024 International Conference on Computer, Electronics, Electrical … , 2024 2024
Power flow control and power oscillation damping in a 2-machine system using SSSC during faults K Sharma, AA Nimje, SD Godwal Energy Harvesting and Systems 10 (2), 291-301 , 2023 2023
