Vinay Pant

Indian Institute of Technology Roorkee | University of Roorkee · Department of Electrical Engineering

The significant benefits of distributed generation (DG) integration in the emerging microgrid are compromised due to substantial challenges associated with the protection. Due to DG penetration, fault current becomes dynamic, leading to make conventional protection methods vulnerable. In order to address this serious issue, a simple and fast protec...

The addition of distributed generation to a power system improves its performance. It makes it more sustainable and efficient. But it also poses substantial challenges for designing a protection scheme. Due to the penetration of distributed energy resources (DERs), the fault level in the microgrid changes significantly. Conventional protection phil...

The proliferation of DC microgrid is a commendable stride for the future power system to match the load requirement precisely with the distributed generation. The potential benefits of DC system over AC technology have made DC microgrid as a competent solution for anonymously increasing DC applications and load demands. However, the thriving advant...

Optimal placement of protective devices and switches in the distribution system improves the system reliability at the cost of increased investment. In this study, a new bi‐directional analytical model has been developed to solve the problem of optimal placement of protective devices and switches in various zones of a distribution system with distr...

This paper proposes a robust protection coordination scheme of directional overcurrent relays (DOCRs) for multiple network topologies in the presence of on-load tap changers (OLTCs). The robust protection coordination scheme provides single settings of DOCRs which will be valid for all N−1 contingencies created after outage of a line, transformer o...

In this work, interior point method based protection coordination schemes are presented for coordinating directional overcurrent relays. Also, for minimizing the operating times of primary and backup relays simultaneously, a new objective function (NOF) is developed. The effectiveness of the proposed solution methods and the developed objective fun...

The fault current contribution of inverter based DGs (IBDGs) may affect the operation of protective devices present in the system. Hence, it is necessary to consider the presence of IBDGs in short-circuit analysis of distribution system. A short-circuit analysis approach for unbalanced distribution system with IBDG, incorporating different voltage...

This study presents a methodology for distribution system (DS) reconfiguration in the presence of distributed generations with objectives of minimising real power loss, switching operations as well as maximising the voltage stability margin while maintaining the constraints of bus voltage, branch current carrying capacity and radiality of DS. Furth...

For maximizing the customer satisfaction and retention, improvement of service reliability is a major concern for electric utilities. Service reliability can be improved by placing switches and reclosers at appropriate locations in the distribution system so that supply from the main substation to the healthy load points can be maintained after iso...

In this chapter, a method for the short-circuit analysis of radial and meshed distribution systems has been explained in details. The results obtained from the discussed method have also been compared with PSCAD simulation results to establish their accuracy. The values of the calculated short-circuit currents can be used for the selection of equip...

This paper deals the stability analysis of a six-phase synchronous motor using eigenvalue criteria from its linearized model, so that the small displacement stability during steady-state condition can be accessed. Eigenvalue provides a simple but effective means for the stability analysis of a motor. An association between eigenvalues and motor par...

The use of multiphase (more than three-phase) ac machines is well adopted in different high power applications and the evaluation of different losses (no load losses, short circuit load loss, friction and windage losses, and stray loss) in multiphase machines is extremely important for the correct determination of their operating performance. There...

Modeling of generalized unified power flow controller (GUPFC), based on the static consideration, and has been presented in this paper used for power flow control. A Newton-Raphson load flow program has been developed which includes comprehensive control facilities and yet exhibits very strong convergence characteristics. The injection model, which...