24 citations · 24 across the 11 of their papers we have counts for
11 papers
Online Long-Term Voltage Stability Margin Estimation for IBR/DER Dominated Power System with Integrated VSM-Aware TSO-DSO Framework
Ahmed Alkhonain, Kiran Kumar Challa, Amarsagar Reddy Ramapuram Matavalam +2
The rapid growth of inverter-based resources (IBRs) and distributed energy resources (DERs) has fundamentally altered the long-term voltage stability characteristics of modern powe…
Consensus Clustering for the Identification of Coherent Regions with Varied Generation Mix
Kiran Kumar Challa, Alok Kumar Bharati, Venkataramana Ajjarapu
With a steady increase in the inverter technology integration to the grid, frequency response of the large inter-connection system becomes more unpredictable. This leads to a signi…
Empowering the Grid: Decentralized Autonomous Control for Effective Utilization and Resilience
Sai Pushpak Nandanoori, Alok Kumar Bharati, Subhrajit Sinha +3
With the emergence of low-inertia microgrids powered by inverter-based generation, there remains a concern about the operational resilience of these systems. Grid-forming inverters…
A Comprehensive Review: Impacts of Extreme Temperatures due to Climate Change on Power Grid Infrastructure and Operation
Kishan Prudhvi Guddanti, Alok Kumar Bharati, Sameer Nekkalapu +2
The power grid is experiencing a multi-fold transformation while the global climate evolves with record-breaking extreme temperatures during heat domes, polar vortices, and severe…
Decoupling Power Quality Issues in Grid-Microgrid Network Using Microgrid Building Blocks
Samrat Acharya, Priya Mana, Hisham Mahmood +2
Microgrids are evolving as promising options to enhance reliability of the connected transmission and distribution systems. Traditional design and deployment of microgrids require…
Microgrid Building Blocks for Dynamic Decoupling and Black Start Applications
Samrat Acharya, Priya Mana, Hisham Mahmood +2
Microgrids offer increased self-reliance and resilience at the grid's edge. They promote a significant transition to decentralized and renewable energy production by optimizing the…
Robust VAR Capability Curve of DER with Uncertain Renewable Generation
Aditya Shankar Kar, Kiran Kumar Challa, Alok Kumar Bharati +2
Active distribution system with high penetration of inverter based distributed energy resources (DER) can be utilized for VAR-related ancillary services. To utilize the DER flexibi…
Dynamic Model of Back-to-Back Converter for System-Level Phasor Simulation
Hisham Mahmood, Samrat Acharya, Francis Tuffner +2
The power system is expected to evolve rapidly with the increasing deployment of power electronic interface and conditioning systems, microgrids, and hybrid AC/DC grids. Among powe…
Investigation of Relevant Distribution System Representation with DG for Voltage Stability Margin Assessment
Alok Kumar Bharati, Venkataramana Ajjarapu
This paper emphasizes the importance of including the unbalance in the distribution networks for stability studies in power systems. The paper aims to: discuss the various simulati…
Counterintuitive VSM Behavior under CVR Incorporating Distribution System
Alok Kumar Bharati, Venkataramana Ajjarapu, Zhaoyu Wang
This paper analyses the impact of conservation by voltage reduction (CVR) on voltage stability margin (VSM) considering transmission and distribution (T&D) systems. VSM is determin…
Deriving DERs VAR-Capability Curve at TSO-DSO Interface to Provide Grid Services
Ankit Singhal, Venkataramana Ajjarapu
The multitudes of inverter-based distributed energy resources (DERs) can be envisioned as distributed reactive power (var) devices (\textit{mini-SVCs}) that can offer var flexibili…