THD Reduction and Power Quality Improvement in Grid Connected PV System

In this paper an MPPT technique is applied in grid connected PV system to harness maximum available power available from sun. The shortcomings of current inverter functions which link PV systems to the utility network are becoming transparent as PV penetration levels continue to increase. In this paper an analysis of solar system connected with the grid has been done.The system is subjected with two types of perturbations, i.e. variable load and the variable irradiance level which changes the output of the solar system. The design, modeling, and analysis of a grid-tied PV system are performed in the MATLAB software simulation environment.

Solar cell works on the principle of photo voltaic effect, which has nonlinear voltage and current characteristics. These characteristics are improved with the help of maximum power point tracking (MPPT) controller. MPPT controller helps to feed the inverter with maximum power from the solar system. Results indicate that in the presence of grid disturbances the inverter can react dynamically to help restore the power system back to its normal state. A harmonic analysis was also performed indicating the inverter under study met the applicable power quality standards for distributed energy resources.

By Rajbir Sood | Geena Kalpesh"THD Reduction and Power Quality Improvement in Grid Connected PV System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd173.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/173/thd-reduction-and-power-quality-improvement-in-grid-connected-pv-system/rajbir-sood

Indexed Journal, Engineering Journal

Missing Item Prediction and Its Recommendation Based on Users Approach in Ecommerce

The Internet is one of the fastest growing areas of intelligence gathering. Due to the tremendous amount of data on internet, web data mining has become very necessary. Predicting the missing items form dataset is indefinite area of research in Web Data Mining. Current approaches use association rule mining techniques which are applied to only small item sets. Numbers of mechanisms were intended for frequent item sets but less attention has been paid that take the advantage of these frequent item sets for prediction purpose. In order to reduce the rule mining cost for large dataset & to provide online prediction efficiently, the proposed approach use novel method for predicting the missing items. The proposed approach extends advantages of prediction at a higher level of abstraction and reduced rule generation complexity by finding out a technique that will work on dissimilar approach.

By Himanshu Deulkar | Rajeshri R. Shelke"Missing Item Prediction and Its Recommendation Based on Users Approach in Ecommerce"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd99.pdf 

Direct URL: http://www.ijtsrd.com/engineering/computer-engineering/99/missing-item-prediction-and-its-recommendation-based-on-users-approach-in-ecommerce/himanshu-deulkar

Indexed Journal, Engineering Journal

A Review on Energy Storage Systems for Mitigation Power Fluctuations in Wind Turbine based Power System

Wind energy is in exhaustible renewable. Unlike conventional fossil fuels, wind energy is clean, abundant energy that will be available for future generations. However, wind speed is a highly stochastic component which can deviate very quickly. Output power of the wind energy conversion system (WECS) is proportional to the cube of wind speed, which causes the output power fluctuation of the wind turbine. The power fluctuation causes frequency fluctuation and voltage flicker inside the power grid. In order to reduce the power fluctuation, various approaches have been proposed in the last decades.

This article deals with the review of several power smoothing strategies for the WECS. Power smoothing methods of the WECS are primarily separated in to two categories such as energy storage based power smoothing method and without energy storage based power smoothing method. The main objectives of this paper are to introduce operating principles for different power smoothing methods

By Sarvesh Garg | Geena Kalpesh"A Review on Energy Storage Systems for Mitigation Power Fluctuations in Wind Turbine based Power System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd170.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/170/a-review-on-energy-storage-systems-for-mitigation-power-fluctuations-in-wind-turbine-based-power-system/sarvesh-garg

UGC Approved Journal, Engineering Journal

Different Strategies for Power Quality Improvement in Off-Grid Renewable Energy Based Power System

The increasing trend in integrating intermittent renewable energy sources into off-grid power system presents major challenges from the viewpoints of reliable operation and control. In this paper, the major problems and challenges in off-grid power system control are discussed, and a review of control strategies and trends is presented. A general overview of the main control is also included. The paper classifies power quality improvement strategies into three levels: primary, secondary, and tertiary, where primary and secondary levels are associated with the operation of the off-grid power system itself, and tertiary level pertains to the coordinated operation of the power system. Each control level is discussed in detail in view of the relevant existing technical literature.

Rajbir Sood | Geena Kalpesh"Different Strategies for Power Quality Improvement in Off-Grid Renewable Energy Based Power System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd140.pdf

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/140/different-strategies-for-power-quality-improvement-in-off-grid-renewable-energy-based-power-system/rajbir-sood

UGC Approved Journal, Engineering Journal

Different Technologies and Components of Renewable Energy Sources based Power System: A Review

Variability and intermittency are some of the main features that characterize renewable energy sources. Intermittency usually includes both predictable and unpredictable variations. The many drawbacks of intermittency of renewable sources can be overcome by considering some special design considerations. Integrating more than one renewable energy source and including backup sources and storage systems are among the few measures to overcome these drawbacks. These additional design considerations usually increase the overall cost of the renewable system.

Furthermore, the presence of more than one energy supply/storage system requires the control of energy flow among the various sources. Therefore, optimizing the size of the components and adopting an energy management strategy are essential to decreasing the cost of the system and limiting its negative effects. The energy management strategy is commonly integrated with optimization to ensure the continuity of load supply and to decrease the cost of energy production. Therefore, energy management is a term that collects all the systematic procedures to control and minimize the quantity and the cost of energy used to provide a certain application with its requirements.

The energy management strategy usually depends on the type of energy system and its components. Various approaches and techniques have been used to develop a successful energy management strategy. In this paper, a comprehensive review of the different combinations and approaches proposed and used by authors of many papers are conducted. These approaches include both the standalone hybrid renewable energy systems and the grid-connected hybrid renewable systems. The selected papers in this review cover the various configurations of the hybrid renewable energy systems for electric power generation only.

By Rajesh Kumar | Satish Kumar"Different Technologies and Components of Renewable Energy Sources based Power System: A Review"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd165.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/165/different-technologies-and-components-of-renewable-energy-sources-based-power-system-a-review/rajesh-kumar

Indexed Journal, Engineering Journal

Power Quality Improvement in Solar-Wind based Power System using BESS

As solar photovoltaic and wind based power generation becomes more commonplace, the inherent intermittency of the solar and wind resource poses one of the great challenges to those who would design and implement the next generation smart grid. Speci?cally, grid-tied solar power generation is a distributed resource whose output can change extremely rapidly, resulting in many issues for the distribution system operator with a large quantity of installed photovoltaic devices. Battery energy storage systems are increasingly being used to help integrate solar and wind power into the grid.

These systems are capable of absorbing and delivering both real and reactive power with sub-second response times. With these capabilities, battery energy storage systems can mitigate such issues with solar-wind power generation as ramp rate, frequency, and voltage issues. Beyond these applications focusing on system stability, energy storage control systems can also be integrated with energy markets to make the solar and wind resource more economical. Providing a high-level introduction to this application area, this paper presents an overview of the challenges of integrating solar and wind power to the electricity distribution system.In this paper a solar-wind based power system model is made.

To smoothen the intermittency of the solar and wind resources a battery energy storage system (BESS) is employed. The battery energy storage system stores the energy when excess power is available and releases the stored energy when demand is higher than the supply. A PI controller based control scheme is implemented for this purpose and an MPPT is used for wind turbine to extract the maximum power from the wind resource.The validity of the control scheme is checked through the MATLAB simulation of the solar-wind based power system.

By Rajesh Kumar | Satish Kumar"Power Quality Improvement in Solar-Wind based Power System using BESS"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd164.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/164/power-quality-improvement-in-solar-wind-based-power-system-using-bess/rajesh-kumar

UGC Approved Journal, Engineering Journal

Combined Effect of Marble Dust and Steel Fiber on the Mechanical Properties of High Strength Concretes

Present day construction cost is at its height with using basic materials like cement, coarse aggregates and fine aggregates. Leaving waste materials to nature specifically can bring about environmental issues. Therefore, reuse of waste materials has been emphasized. Industries produce lots of waste materials, which might be helpful in partial replacement of basic materials due to their composition and it can be proved economical.

The concrete industry is always searching for supplementary material with the target of decreasing the solid waste disposal issue. As we know concrete is weak in tension so, to overcome this, steel fibers has been used. There are few reuse and recycling solutions for this industrial by-product, both in experimental phase and have useful applications. These mechanical wastes are dumped in the close-by areas and natural fruitfulness of the soil is ruined.

The physical, mechanical & chemical properties of wastes are discussed. In this study, marble powder has replaced sand, the whole research is carried out on M60 grade concrete with partly replacing sand by 0%, 15%, 30%, 45%, and 60% of marble dust, with the addition of steel fibers at ratio 0.8% by volume so as to get greatest compressive strength, flexural strength and furthermore split tensile strength.

Based upon the feasibility interpretation it is observed that replacing up to 45% marble powder and 0.8% of steel fibers in concrete is appropriate in conformance with the requirement. The compressive strength and the spilt tensile increased up to 15% replacement, after that they started decreasing.

By KRISHAN KUMAR | SUMESH JAIN"Combined Effect of Marble Dust and Steel Fiber on the Mechanical Properties of High Strength Concretes"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd163.pdf 

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/163/combined-effect-of-marble-dust-and-steel-fiber-on-the-mechanical-properties-of-high-strength-concretes/krishan-kumar

Call For Paper, Engineering Journal