Santosh S Veda

National Renewable Energy Laboratory | NREL · Power Systems Engineering Center

Reliable and resilient grid operations with high penetration levels of distributed energy resources (DERs) can be achieved with improved situational awareness and seamless integration of DERs with utility enterprise controls. This paper presents the details of the development of a data-enhanced hierarchical control (DEHC) architecture and the resul...

The focus of this paper is on analyzing the impact of conservation voltage reduction in the presence of active devices such as solar photovoltaic (PV) and developing controls that leverage these distributed energy resources. An event-driven predictive approach for real-time volt/volt-ampere reactive (VAR) optimization, along with local two-level ad...

First layer: Centralized control and optimization using multi-objective particle swarm optimization (PSO)  Second Layer: Local voltage control using volt/VAR droop controller  Third Layer: Calculation of savings and CVR factor. The task of the VVO processor is to optimize the settings of the VVO devices for the CVR objectives. The ranges of the C...

First layer: Centralized control and optimization using multi-objective particle swarm optimization (PSO)  Second Layer: Local voltage control using volt/VAR droop controller  Third Layer: Calculation of savings and CVR factor. The task of the VVO processor is to optimize the settings of the VVO devices for the CVR objectives. The ranges of the C...

Accurate load models are necessary to enable multiple power system planning and operation applications. The current day utility practice relies on model parameters that are based on old survey results/tests and often do not accurately capture the behavior of loads across different operating conditions. This results in conservative estimation of loa...

Utilities today are in need of tools and techniques that will enable them to predict the dynamic stability and reliability of the grid in the real-time. The problem is challenging because of the large number of contingencies that are to be simulated. In this paper a fast method for power system contingency screening and ranking for small signal sta...

This paper demonstrates the application of a robust technique for damping low frequency oscillations in the WECC. The control is designed by extending the logic of SMA and integrating it with the LMI technique to develop a single-gain feedback controller that is capable of damping oscillations in large systems. It is an integrated form of control b...

The vision of a smart grid is predicated upon pervasive use of modern digital communication techniques to today's power system. As wide area measurements and control techniques are being developed and deployed for a more resilient power system, the role of communication network is becoming prominent. Power system dynamics gets influenced by the com...

With the advent of the concept of smart-grid, the power system infrastructure is being equipped with high-bandwidth data communication and embedded computing infrastructure. The communication infrastructure has gained importance in the transmissions subsystems due to increasing use of the wide area measurement and monitoring using Phasor measuremen...

The vision of a smart grid is predicated upon pervasive use of modern digital communication techniques to today's power system. As wide area measurements and control techniques are being developed and deployed for a more resilient power system, the role of communication network is becoming prominent. Power system dynamics gets influenced by the com...

The functional and computational capabilities of modern digital relays currently deployed in the power systems are usually underutilized. There is great potential to non-intrusively upgrade the existing relay protection infrastructure, for example, by constructing or properly utilizing a network infrastructure connecting the relays. In this paper 1...

In this paper, we propose a distributed agent based supervisory scheme to make Zone 3 relays robust to hidden failure induced tripping, facilitated by the communication network -- soon to become an integral parts of the smart grid. Possible elimination of Zone 3 relays (remote backup protection) has been studied in the recent past and these remote...