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Venkataramana Ajjarapu - Publications

Affiliations: 
Iowa State University, Ames, IA, United States 
Area:
Electronics and Electrical Engineering, Energy, Mathematics
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53 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Matavalam ARR, Singhal A, Ajjarapu V. Monitoring Long Term Voltage Instability Due to Distribution and Transmission Interaction Using Unbalanced $\mu$ PMU and PMU Measurements Ieee Transactions On Smart Grid. 11: 873-883. DOI: 10.1109/Tsg.2019.2917676  0.444
2020 Bharati AK, Ajjarapu V. Investigation of Relevant Distribution System Representation With DG for Voltage Stability Margin Assessment Ieee Transactions On Power Systems. 35: 2072-2081. DOI: 10.1109/Tpwrs.2019.2950132  0.507
2019 Singhal A, Ajjarapu V, Fuller J, Hansen J. Real-Time Local Volt/Var Control Under External Disturbances With High PV Penetration Ieee Transactions On Smart Grid. 10: 3849-3859. DOI: 10.1109/Tsg.2018.2840965  0.513
2019 Radaideh A, Vaidya U, Ajjarapu V. Sequential Set-Point Control for Heterogeneous Thermostatically Controlled Loads Through an Extended Markov Chain Abstraction Ieee Transactions On Smart Grid. 10: 116-127. DOI: 10.1109/Tsg.2017.2732949  0.44
2019 Matavalam ARR, Ajjarapu V. PMU-Based Monitoring and Mitigation of Delayed Voltage Recovery Using Admittances Ieee Transactions On Power Systems. 34: 4451-4463. DOI: 10.1109/Tpwrs.2019.2913742  0.473
2019 Sinha S, Sharma P, Vaidya U, Ajjarapu V. On Information Transfer-Based Characterization of Power System Stability Ieee Transactions On Power Systems. 34: 3804-3812. DOI: 10.1109/Tpwrs.2019.2909723  0.373
2019 Sun H, Guo Q, Qi J, Ajjarapu V, Bravo R, Chow J, Li Z, Moghe R, Nasr-Azadani E, Tamrakar U, Taranto GN, Tonkoski R, Valverde G, Wu Q, Yang G. Review of Challenges and Research Opportunities for Voltage Control in Smart Grids Ieee Transactions On Power Systems. 34: 2790-2801. DOI: 10.1109/Tpwrs.2019.2897948  0.496
2019 Venkatraman R, Khaitan SK, Ajjarapu V. Dynamic Co-Simulation Methods for Combined Transmission-Distribution System With Integration Time Step Impact on Convergence Ieee Transactions On Power Systems. 34: 1171-1181. DOI: 10.1109/Tpwrs.2018.2874807  0.34
2018 Ashok A, Govindarasu M, Ajjarapu V. Online Detection of Stealthy False Data Injection Attacks in Power System State Estimation Ieee Transactions On Smart Grid. 9: 1636-1646. DOI: 10.1109/Tsg.2016.2596298  0.417
2018 Matavalam ARR, Ajjarapu V. Sensitivity Based Thevenin Index With Systematic Inclusion of Reactive Power Limits Ieee Transactions On Power Systems. 33: 932-942. DOI: 10.1109/Tpwrs.2017.2701811  0.488
2018 Li S, Ajjarapu V, Djukanovic M. Adaptive Online Monitoring of Voltage Stability Margin via Local Regression Ieee Transactions On Power Systems. 33: 701-713. DOI: 10.1109/Tpwrs.2017.2698065  0.546
2017 Xu P, Wang X, Ajjarapu V. Adaptive critical eigenvalues tracing via projected continuation of invariant subspace Iet Generation Transmission & Distribution. 11: 2115-2123. DOI: 10.1049/Iet-Gtd.2016.1986  0.391
2015 Paramasivam M, Dasgupta S, Ajjarapu V, Vaidya U. Contingency Analysis and Identification of Dynamic Voltage Control Areas Ieee Transactions On Power Systems. 30: 2974-2983. DOI: 10.1109/Tpwrs.2014.2385031  0.421
2015 Dasgupta S, Paramasivam M, Vaidya U, Ajjarapu V. Entropy-Based Metric for Characterization of Delayed Voltage Recovery Ieee Transactions On Power Systems. 30: 2460-2468. DOI: 10.1109/Tpwrs.2014.2361649  0.459
2015 Dasgupta S, Paramasivam M, Vaidya U, Ajjarapu V. PMU-Based Model-Free Approach for Real-Time Rotor Angle Monitoring Ieee Transactions On Power Systems. 30: 2818-2819. DOI: 10.1109/Tpwrs.2014.2357212  0.392
2014 Yu J, Li W, Ajjarapu V, Yan W, Zhao X. Identification and location of long-term voltage instability based on branch equivalent Iet Generation Transmission & Distribution. 8: 46-54. DOI: 10.1049/Iet-Gtd.2012.0498  0.525
2013 Fateh B, Govindarasu M, Ajjarapu V. Wireless network design for transmission line monitoring in smart grid Ieee Transactions On Smart Grid. 4: 1076-1086. DOI: 10.1109/Tsg.2013.2241796  0.373
2013 Paramasivam M, Salloum A, Ajjarapu V, Vittal V, Bhatt NB, Liu S. Dynamic optimization based reactive power planning to mitigate slow voltage recovery and short term voltage instability Ieee Transactions On Power Systems. 28: 3865. DOI: 10.1109/Tpwrs.2013.2271260  0.536
2013 Dasgupta S, Paramasivam M, Vaidya U, Ajjarapu V. Real-Time Monitoring of Short-Term Voltage Stability Using PMU Data Ieee Transactions On Power Systems. 28: 3702-3711. DOI: 10.1109/Tpwrs.2013.2258946  0.493
2013 Leonardi B, Ajjarapu V. An approach for real time voltage stability margin control via reactive power reserve sensitivities Ieee Transactions On Power Systems. 28: 615-625. DOI: 10.1109/Tpwrs.2012.2212253  0.609
2013 Yu J, Li W, Ajjarapu V, Yan W, Zhao X. Approach to trace and locate long-term voltage instability risk in power system planning Iet Generation Transmission & Distribution. 7: 483-490. DOI: 10.1049/Iet-Gtd.2012.0335  0.421
2012 Xu P, Wang X, Ajjarapu V. Continuation power flow with adaptive stepsize control via convergence monitor Iet Generation Transmission & Distribution. 6: 673-679. DOI: 10.1049/Iet-Gtd.2011.0573  0.475
2012 Fan MH, Wang CS, Ajjarapu V. Power system equilibrium tracing and bifurcation detection based on the continuation of the recursive projection method Iet Generation Transmission & Distribution. 6: 199-206. DOI: 10.1049/Iet-Gtd.2011.0555  0.449
2011 Luo C, Ajjarapu V. Sensitivity-Based Efficient Identification of Oscillatory Stability Margin and Damping Margin Using Continuation of Invariant Subspaces Ieee Transactions On Power Systems. 26: 1484-1492. DOI: 10.1109/Tpwrs.2010.2098424  0.489
2011 Tiwari A, Ajjarapu V. Optimal Allocation of Dynamic VAR Support Using Mixed Integer Dynamic Optimization Ieee Transactions On Power Systems. 26: 305-314. DOI: 10.1109/Tpwrs.2010.2051342  0.424
2011 Leonardi B, Ajjarapu V. Development of multilinear regression models for online voltage stability margin estimation Ieee Transactions On Power Systems. 26: 374-383. DOI: 10.1109/Tpwrs.2010.2050155  0.605
2011 Bai H, Ajjarapu V. A Novel Online Load Shedding Strategy for Mitigating Fault-Induced Delayed Voltage Recovery Ieee Transactions On Power Systems. 26: 294-304. DOI: 10.1109/Tpwrs.2010.2047279  0.443
2011 Fan M, Ajjarapu V, Wang C, Wang D, Luo C. RPM-Based Approach to Extract Power System Steady State and Small Signal Stability Information From the Time-Domain Simulation Ieee Transactions On Power Systems. 26: 261-269. DOI: 10.1109/Tpwrs.2010.2046656  0.403
2010 Yang S, Ajjarapu V. A Speed-Adaptive Reduced-Order Observer for Sensorless Vector Control of Doubly Fed Induction Generator-Based Variable-Speed Wind Turbines Ieee Transactions On Energy Conversion. 25: 891-900. DOI: 10.1109/Tec.2009.2032589  0.401
2010 Lee BJ, Kang SG, Seo S, Ajjarapu V, Song H. Generation re-dispatch algorithm against voltage collapse in Jeju island system with a frequency control by high-voltage direct current Iet Generation Transmission & Distribution. 4: 609-619. DOI: 10.1049/Iet-Gtd.2009.0484  0.531
2009 Konopinski RJ, Vijayan P, Ajjarapu V. Extended Reactive Capability of DFIG Wind Parks for Enhanced System Performance Ieee Transactions On Power Systems. 24: 1346-1355. DOI: 10.1109/Tpwrs.2009.2023260  0.456
2009 Bai H, Zhang P, Ajjarapu V. A Novel Parameter Identification Approach via Hybrid Learning for Aggregate Load Modeling Ieee Transactions On Power Systems. 24: 1145-1154. DOI: 10.1109/Tpwrs.2009.2022984  0.314
2009 Liu H, Jin L, McCalley JD, Kumar R, Ajjarapu V, Elia N. Planning reconfigurable reactive control for voltage stability limited power systems Ieee Transactions On Power Systems. 24: 1029-1038. DOI: 10.1109/Tpwrs.2009.2016059  0.573
2009 Song H, Lee BJ, Ajjarapu V. Control strategies against voltage collapse considering undesired relay operations Iet Generation Transmission & Distribution. 3: 164-172. DOI: 10.1049/Iet-Gtd:20080055  0.504
2006 Yang D, Ajjarapu V. A decoupled time-domain Simulation method via Invariant subspace partition for power system analysis Ieee Transactions On Power Systems. 21: 11-18. DOI: 10.1109/Tpwrs.2005.860937  0.382
2006 Wang Q, Song H, Ajjarapu V. Continuation-based quasi-steady-state analysis Ieee Transactions On Power Systems. 21: 171-179. DOI: 10.1109/Tpwrs.2005.860936  0.372
2004 Kundur P, Paserba J, Ajjarapu V, Andersson G, Bose A, Canizares C, Hatziargyriou N, Hill D, Stankovic A, Taylor C, Cutsem TV, Vittal V. Definition and classification of power system stability IEEE/CIGRE joint task force on stability terms and definitions Ieee Transactions On Power Systems. 19: 1387-1401. DOI: 10.1109/Tpwrs.2004.825981  0.428
2003 Song H, Lee B, Kwon S, Ajjarapu V. Reactive reserve-based contingency constrained optimal power flow (RCCOPF) for enhancement of voltage stability margins Ieee Transactions On Power Systems. 18: 1538-1546. DOI: 10.1109/Tpwrs.2003.818759  0.487
2002 Lee B, Song H, Kwon S, Jang G, Kim J, Ajjarapu V. A study on determination of interface flow limits in the KEPCO system using modified continuation power flow (MCPF) Ieee Transactions On Power Systems. 17: 557-564. DOI: 10.1109/Tpwrs.2002.800874  0.388
2000 Feng Z, Ajjarapu V, Maratukulam DJ. A comprehensive approach for preventive and corrective control to mitigate voltage collapse Ieee Transactions On Power Systems. 15: 791-797. DOI: 10.1109/59.867175  0.56
2000 Feng Z, Ajjarapu V, Long B. Identification of voltage collapse through direct equilibrium tracing Ieee Transactions On Power Systems. 15: 342-349. DOI: 10.1109/59.852142  0.47
1998 McCalley JD, Ajjarapu V, De La Ree J, Phadke AG, Sheble GB, Venkata SS, Vittal V. Multimedia courseware sparks interest in the industry Ieee Computer Applications in Power. 11: 26-32. DOI: 10.1109/67.721700  0.319
1998 Feng Z, Ajjarapu V, Maratukulam DJ. A practical minimum load shedding strategy to mitigate voltage collapse Ieee Transactions On Power Systems. 13: 1285-1290. DOI: 10.1109/59.736266  0.513
1998 Ajjarapu V, Lee B. Bibliography on voltage stability Ieee Transactions On Power Systems. 13: 115-125. DOI: 10.1109/59.651622  0.451
1996 Ibsais A, Ajjarapu V. Voltage stability-limited interchange flow Electric Power Systems Research. 38: 91-95. DOI: 10.1016/S0378-7796(96)01066-8  0.483
1995 Lee B, Ajjarapu V. A piecewise global small-disturbance voltage-stability analysis of structure-preserving power system models Ieee Transactions On Power Systems. 10: 1963-1971. DOI: 10.1109/59.476064  0.534
1995 Ajjarapu V, Battula S. Effect of load modeling on steady state voltage stability Electric Machines and Power Systems. 23: 501-514. DOI: 10.1080/07313569508955639  0.476
1995 Ajjarapu V, Jain N. Optimal continuation power flow Electric Power Systems Research. 35: 17-24. DOI: 10.1016/0378-7796(95)00982-5  0.478
1994 Ajjarapu V, Lau PL, Battula S. An optimal reactive power planning strategy against voltage collapse Ieee Transactions On Power Systems. 9: 906-917. DOI: 10.1109/59.317656  0.585
1991 Ajjarapu V, Lee B. Bifurcation theory and its application to nonlinear dynamical phenomena in an electrical power system Ieee Transactions On Power Systems. 7: 424-431. DOI: 10.1109/59.141738  0.4
1991 Ajjarapu V, Christy C. The continuation power flow: a tool for steady state voltage stability analysis Ieee Transactions On Power Systems. 7: 416-423. DOI: 10.1109/59.141737  0.519
1991 Ajjarapu V. Sensitivity analysis of power system dynamics: A digraph approach Electric Power Systems Research. 21: 57-61. DOI: 10.1016/0378-7796(91)90037-N  0.42
1989 Ajjarapu V, Carr J, Ramshaw RS. Security constrained optimal reactive power dispatch Electric Power Systems Research. 16: 209-216. DOI: 10.1016/0378-7796(89)90013-8  0.524
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