Nitisha Sudhir Darwade

Goal-oriented Research Engineer with a proven track record in optimizing material selections and developing advanced models and algorithms. Expertise in Electric Power Systems, focusing on sustainable energy solutions and grid optimization techniques. Strong analytical and problem-solving skills, complemented by effective time management and communication abilities. Committed to advancing electric power systems through innovative research and development initiatives.

Graduate Aptitude Test in Engineering (GATE)

• GATE 2012 Qualified
• GATE 2011 Qualified

• Title: Voltage Angle Based Power System Inertia Estimation Using Synchrophasor Technology

Details: SCI-E Journal of Electrical Engineering and Technology

Abstract: The increasing integration of renewable energy sources (RES) into power systems raises extensive challenges for power system operators to ensure grid stability, especially due to the reduced inertia associated with these sources Therefore, it is essential  to estimate power system inertia continuously to monitor and control power system dynamics. Traditionally, several methods were being adopted to estimate power system inertia based on frequency measurements which has its own assumptions and limitations. This paper presents a novel innovative approach to estimate online system inertia by using  bus voltage phase angle measured from Phasor measurement units along with fuzzy logic  estimator. The proposed method has been tested on IEEE nine bus system and  Kundur’s two  area system modified with PV farms. Simulations have been carried out with OPAL RT real time simulator in HYPERSIM environment. The results of the proposed method estimate the  power system inertia with 99.98% - 96.13%.

• Title: Investigation on Impact of Inverter-Based Resources on Power System Using Phasor Measurement Unit

Details: SCI-E Arabian Journal for Science and Engineering https://doi.org/10.1007/s13369-025- 10114-z.

Abstract:Integration of inverter-based resources (IBRs) in power system is the necessity of present power system. With IBR rapidly  integrating into the grid in last few decades has raised challenges in the power system to maintain stability. There is necessity  to investigate dynamic stability due to the integration of IBR to mitigate the negative impacts on the system. Motivated by the  challenges of integrating IBR in power system, a comprehensive investigation on several aspects of stability has been carried  out. Responses of integrating IBR on various benchmarks have been analysed in time domain with phasor measurement unit  (PMU). The results of the investigation indicate indirect effect on stability by reduction in system inertia and direct effect on  protection settings. To investigate the phenomenon which are of interest in few micro seconds to milli seconds, EMT simulations  have to be performed. Therefore, simulation studies have been carried out in real time step of 50µseconds using EMTP–RV and OPAL RT simulator with HYPERSIM environment on benchmark systems of nine-bus system, single-machine system  and Kundur’s two-area system with photovoltaic generator (PV).

• Investigation On Impact Of IBR On Negative Sequence Impedance Based Directional Protection

Description: Presented at 3rd IEEE- International Conference on Power Electronics , Intelligent Control &  Energy Systems (ICPEICES 2024) held at Delhi Technological University on 26th-28th April 2024. DOI:  10.1109/ICPEICES62430.2024.10719257

Abstract: -Integration of Inverter based resources (IBR) in  power system has introduced malfunctioning in the  conventional protection system. Due to which stability of system  is jeopardized. IBR shows different response as compare to  Synchronous Generator (SG) for similar nature of faults in the  system, especially on sequence component base protection  schemes. Directional overcurrent relaying is one of the major  protection schemes which is used to detect the locational  direction of fault. This paper investigates the impact of IBR on  negative sequence impedance based directional overcurrent  relaying. This analysis predicts the negative impact of  increasing IBR on negative sequence based relays. Simulation  study has been carried out in standard benchmark system in  OPAL RT HYPERSIM real time simulator.

• Title: Investigation on impact of Inverter Based Renewable Energy Sources On Distance Relaying

 Description: Presented at 3rd IEEE- International Conference on Power Electronics , Intelligent Control &  Energy Systems (ICPEICES 2024) held at Delhi Technological University on 26th-28th April 2024 DOI:  10.1109/ICPEICES62430.2024.10719278

Abstract: Prevention of blackouts in power system can  be carried out to a large extent with protection schemes of  transmission lines. Distance relaying are widely used for  protection of the transmission line. However, due to  rapidly increasing renewable energy sources in the power  system whose behavior is different compared to  conventional synchronous generators during fault  condition shall lead to malfunctioning of these relays. This  research study investigates the effect ofrenewable energy  sources(RES) into the distance relaying. For this purpose  IEEE benchmark nine bus system with PV farms has  been considered to analyze the behavior of distance  relays. It can be inferred from this study the  incorporation of RES in the power system may lead to  maloperation of relay or delaying in tripping time which  may cause instability in the power system. Simulation  study has been carried out in HYPERSIM OP AL RT real  time simulator.

• Title: Transmission line protection using synchrophasor.

Description: E-Journal Volume 2, Issue 11, 2015, pp 289-292, International Journal of Scientific Research  and Development (IJSRD) ISSN [online] : 2321-0613.

Abstract: The paper aims at studying the Synchrophasors technology which overcomes various limitations of the power system. The basic limitation of control from a substation has been shifted to central control by the means of this technology. These schemes based on the Synchrophasors technology are also known as Wide Area Measurement Systems (WAMS). The technology aims at visualization of magnitude and angle of each phase of the three phase voltage/current, frequency, rate of change of frequency and angular separation at every few millisecond interval (say 40 milliseconds).

• Title: Detection of different of fault and its location in Transmission line by using negative sequence components. Description: E-Journal Volume 4, Issue 2, Feb 2018, International Journal of Future Revolution in Computer Science & Communication Engineering (IJFRCSCE) UGC Approved Journal. ISSN [UGC Approved Journal] : 2454-4248.

Abstract: In recent years, voltage instability has been a major issue in power systems. There are many factors contributing to voltage collapse  which might cause blackouts, such as demands of consumption growth, the influence of harmonic component and reactive power constraints.  These factors are very difficult to predict in real environment.  High-voltage transmission lines are an important part of the power system. As the operation of the power grid expands, the demands on long  distance transmission lines will increase. These lines are often exposed to large diverse geographical areas with complex terrain and weather  conditions. If a fault occurs in a transmission line, it can be very hard to find and report it. Even if the fault is fixed, the new steady state of the  power systems needs to be monitored to avoid failure again.  The paper aims at studying the technology which overcomes various limitations of the power system.

• Title: Maximum Power Harvesting of Solar Energy by using novel control of DC-DC control.

     Description: International Conference on Advanced & Practices in Electrical Engineering (ICAPE2018) held  at KDK    College of Engineering on 8th-9th march 2018.

Abstract: Nowadays the energy crises are due to the limited fossil fuel on the earth. Solar energy is the continuous source of renewable energy. Solar energy has main advantages is that clean, maintenance free and space limited area compare to the other type of renewable energy which can be space consuming. One of the methods to improve the efficiency of the photovoltaic system by using intermediate power processor which changes the current and voltage levels such that maximum power can be extracted. In this project, we analyze the design and simulation of the electrical operation of a photovoltaic (PV) system. Photovoltaic energy is used as a renewable energy system. Photovoltaic (PV) cells are used to generate dc voltages and given to DC-DC converter. Designing of converter gives constant output. DC-DC converter used Buck type of converter. The converter output is given to battery. Buck converter gives the constant output which controlled by PWM controller and feedback control system. A maximum power point tracking (MPPT) algorithm technique is used to track the peak power to maximize the produced energy. This algorithm will identify the suitable duty cycle ratio in which buck converter should operate to the maximum point. The MPPT algorithm is important in increasing the efficiency of the system.

• GIAN program on “Role of Reliability Evaluation in Power system Planning Operation and Maintenance during 3rd-7th March 2025 organized by Department of Electrical Engineering Department at Delhi Technological University, Delhi.
• One day workshop on Building Trust on Campus: POSH Insights for Academia organized by Internal complaints Committee and Department of Electrical Engineering Delhi Technological University on 21/11/2024 • One day workshop l Technical Writing using LATEX by Electrical Engineering Department at Delhi Technological University, Delhi on 10/09/2024 • Faculty induction and training workshop on 10th – 12th May 2014 at GH Raisoni College of Engineering Nagpur.
• Three Days TEQIP-II sponsored workshop on “Electrical Power Quality & Its Related Issues” at VNIT Nagpur on 9th – 10th January 2014.
• One week vocational training in Bharat Sanchar Nigam Limited Nagpur from 18th -22nd January 2010 on Concept of Infrastructure and utility services in Telecom Industry.
• Fifteen Days vocational training in MAHAGENCO Koradi Nagpur from 25th May - 06th June 2009 on Power Generation.
• One Day workshop on “PLC & SCADA” at Anjuman College of Engineering Nagpur on 16th January 2010

• Excellent Communication Skills.
• Hardworking, Quick Learner and Result oriented.
• Initiative & resourcefulness in Problem Solving and a quick decision maker.
• Ability to work under pressure and time-bound conditions
• Leadership quality & enjoy working with a team

• Father’s Name : Mr. Sudhir Viswanath Darwade
• Husband’s Name : Mr. Chandramani Maroti Shahare
• Date of Birth : 17 July 1989
• Marital Status : Married
• Nationality : Indian
• Permanent Address : N-801, GLS SOUTH AVANUE SECTOR 92 GURUGRAM -122001.

• I hereby declare that the information furnished above is true of my knowledge and I bear the responsibility for the correctness of the above mentioned particulars.
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