Venkataramana Ajjarapu

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The loads and wheeling transactions are varying very rapidly in the deregulated power market. Hence the power producers must respond quickly to those changes without affecting the system security and stability. This paper presents an application of Fitness Distance Ratio Particle Swarm Optimization (FDR PSO) algorithm to determine the optimal generation(More)
In this paper, we develop a real-time situational awareness framework for the electrical transmission power grid using Wireless Sensor Network (WSN). While WSNs are capable of cost efficient monitoring over vast geographical areas, several technical challenges exist. The low power, low data rate devices cause bandwidth and latency bottlenecks. In this(More)
In the last decade there has been a drastic increase in the penetration of variable generation (VG) such as wind and solar. VG increases the MW variability that must be met in the regulation and reserve markets. If VG penetration levels are allowed to increase without providing additional flexibility in the form of fast response regulation, reserves, and(More)
This project will develop (a) design theory and method for planning hybrid (discrete, continuous) power system controllers, and (b) economic systems, applicable to power system energy markets, for recovering and allocating costs of design and installation of such controllers. Discrete-event system theory and integer programming optimization methods will be(More)
This research focuses on the design and implementation of two novel controllers within rooftop photovoltaic (PV) inverters. The main objective of the first control scheme is to eliminate the voltage violation (induced voltage rise due to reverse power flow) and to maintain the voltages within acceptable bounds, at essentially no extra investment cost to the(More)
This paper will focus on identifying the interacting dynamic phenomena in power systems by using continuation of invariant subspaces (CIS). With this approach one can trace the trajectory of different oscillatory modes as system parameter changes. Many power system dynamic phenomena, such as strong resonance, subsynchronous resonance (SSR) et al., are(More)
The dissertation focuses on the study of environmental policies and their impacts on the power systems’ planning. It consists of three parts, each of which addresses a single problem on environmental policies and generation expansion planning. In the first part of the dissertation, I compared the capand-trade policy and various carbon tax policies in a(More)