Abstract

With aggressive population growth coupled with robust economic growth India's energy sector is yet to face the worst. With limited conventional fuel resources India has already begun working at its alternatives. While this does not seem to be complete other major issues like poor power quality, extremely high losses, low grid reliability and rampant peak demands stare in the face of the economy. Smart Grid has been recognized world-wide as the solution to all problems pertaining power to which India is no exception. Smart Grid is not a single formulation but a broad vision. It uses modern Information and Communication Techniques (ICT) to impart robustness and flexibility to the grid. It offers smart metering and variable pricing, based on time of use and current demand, as higher end solutions. It also imparts self-healing attributes to the conventional grids. While these list the major but not all the services promised by Smart Grid, it seems appropriate to call it the ultimate solution. The study first details the current scenario of the Indian Power Sector. It later converges to legitimizing the necessity of Smart grid in the Indian perspective.

Abstract

This paper focuses on the comparative analysis of SPV system developed by using basic circuit equations of the solar photovoltaic cell with the SPV system developed by using Simscape library. Then the I-V and P-V characteristics are obtained from the simulation of different models. In order to maximize the output of a SPV system, tracking of the MPP is necessary. To extract the maximum power of a SPV system, the developed models are integrated with DC-DC converter with MPPT algorithm implemented in it.

Abstract

The modern power system is becoming more complex due to change in the system configuration day to day, to meet the increasing demand in electrical energy, by installation of new generating units and interconnection of transmission lines and extra high voltage tie lines etc. The ever growing load demand in the power system witnesses a gradual decrease in the system voltage profile. It is precisely the inability of the system to generate the required reactive power that propounds the cause of voltage collapse. The recent development in power electronics is the introduction of flexible AC transmission system (FACTS), which can facilitate the control of power flow and increase the power transfer, to be more flexible, secure and economical by controlling various electrical parameters of transmission circuits. To generate the required reactive power of the load and to improve voltage profile of the system, shunt compensation to the system is required. Shunt Facts controllers like SVC , STATCOM have the ability to provide the mentioned requirements of the power system.

In this paper an algorithm is formulated to model and place the STATCOM in two test cases which is approved by IEEE such as IEEE30 bus, and IEEE57 bus. The formulated algorithm is tested on the two IEEE test cases such as IEEE 30bus and IEEE 57bus and the results are discussed.

Abstract

In this paper, particle swarm optimization technique is proposed for Multi-Objective Optimal Power Flow problem. Various optimization techniques are applied to solve the power flow problem with cost, loss and voltage stability objectives in the literature. In this paper, particle swarm optimization technique is proposed to optimize the objectives of Cost, Transmission Loss, Voltage Variation, Voltage Stability Index, Power Mismatch and Maximum Loadability in multimode and analysis of the power flow problem is done in detail. This proposed approach has been evaluated on the standard IEEE 30 bus test system and simulated using MATLAB 8.1.

Abstract

Contingency analysis is the study of the outage of elements such as transmission lines, transformers and generators, and investigation of the resulting effects on line power flows and bus voltages of the remaining system. This paper presents the simulation of a contingency analysis of IEEE-6 Bus power system using PSAT in Matlab toolbox. The contingency analysis for the given IEEE-6 Bus system for line 3-4 outage is carried out. Simulation of line outage is more complex than a generator outage, since line outage results in a change in system configurations.

Abstract

Smart Power Grids (SPGs), also known as Intelligent Utility Networks (IUNs), explains a new model in electrical power distribution and management including advanced two-way communications and distributed computing capabilities. SPGs are emerging power grids to improve control, efficiency, reliability and safety. A smart electric power grid increases the ability of a computing device to connect to other device and organizes all generating plants, the networks and consumers to work together efficiently. This paper describes the generation, transmission and distribution parts of the grid. These parts are nonlinear, non-stationary stochastic systems and have become too complicated for humans to operate safely during severely changing conditions, as experienced during sudden terrible disasters.. In addition, high power electronic switches have found application in power networks but the high switching speeds of these devices put the power grid in extreme danger and requires methods to overcome these. Due to these disturbances and difficulties of power grid Adaptive and Flexible methods can impsone a grid in many ways. Some applications, as well as some ideas of smart grids, are described.