i-manager's Journal on Power Systems Engineering (JPS)


Volume 6 Issue 3 August - October 2018

Research Paper

Correction of Power Factor and Balancing of 3 Phase Unbalanced Load

Shekhappa G. Ankaliki * , Akshay Hegde**, Sanjeeth Amminabhavi ***
* Professor & Head, Department of Electrical & Electronics Engineering, SDM College of Engineering and Technology, Dharwad, India.
**_*** PG Scholar, Department of Electrical & Electronics Engineering,SDM College of Engineering and Technology, Dharwad, India.
Ankaliki, G. S., Hegde, A., and Amminabhavi, S. (2018). Power Factor Correction and Balancing of Unbalanced Load. i-manager’s Journal on Power Systems Engineering, 6(3), 1-6. https://doi.org/10.26634/jps.6.3.15482

Abstract

This paper presents correction of power factor and balancing of three phase unbalanced load. The analytical way of correction of power factor and balancing the three phase unbalanced delta connected load is carried out. The analytical results are compared with Matlab simulation results. Simulated results reveal that after correction of power factor and balancing of three phase unbalanced load, all three supply currents are in phase with their respective phase voltages and equal in magnitude resulting in a balanced load on supply system

Research Paper

Impacts of Micro-grid and DG on Radial Distribution Network

Rohit Nandi * , Rahul Pathak**
* _** Assistant Professor, Dr. Akhilesh Das Gupta Institute of technology and Management, Shastri park, New Delhi, India.
Nandi, R., and Pathak, R. (2018). Impacts of Micro-grid and DG on Radial Distribution Network. i-manager’s Journal on Power Systems Engineering, 6(3), 7-14. https://doi.org/10.26634/jps.6.3.15500

Abstract

Micro-grid and DG (Distributed generator) plays a crucial role in modern power systems. The large network of any power system ends at distribution side where high current and low voltage level is suitable for operation. This paper briefly describes about different type of DG system and micro-grid components. It covers brief idea about micro-grid controlling scheme and its mode of operation. The effect of external power source and its impacts on load flow study have been demonstrated on IEEE 33 bus radial distribution system. The techniques used for selection and allocation of DG have been mentioned and used analysis based on proposed radial distribution model. The variation of parameters (i.e. voltage and active power loss) after introduction of external active power units have been represented in this paper

Research Paper

Performance of Condensate-Vacuum-and-Extraction Pump of BSP with Process Optimization and Optimum Neural Network based Learning System

Sanjeev Karmakar* , Gyan Ranjan Biswal**
* Associate professor, Bhilai Institute of Technology , Bhilai House, Durg, Chhattisgarh, India.
** Assistant Professor, Department of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India.
Karmakar, S., and Biswal, R.G (2018). Performance of Condensate-Vacuum-and-Extraction Pump of BSP with Process Optimization and Optimum Neural Network based Learning System. i-manager’s Journal on Power Systems Engineering, 6(3), 15-25. https://doi.org/10.26634/jps.6.3.15305

Abstract

Surface condenser of a power generation plant experiences maximum loss in thermal efficiency (in terms of electrical power output), typically more than 40% of the total generation capacity. The manuscript brings a novel Control and Instrumentation (C&I) approach to enhance the performance of surface condensing unit along with the design issues. This paper presents a control algorithm to get better performance of surface condensation section. The system is designed for maintaining levels of the optimal selection of condensate vacuum pump and condensate extraction pump to minimize the pressure loss involved with the system/section. The work includes a comparison between all the systems presented for system reliability. The 3-parameters Weibull distribution function is uniquely considered for evaluating the design issues of condenser module. It includes the location parameter for identification of faults and execution of operation in real-time. In addition, a process learning system is developed to enhance the performance supervision of the surface condenser in real-time. Effectiveness of the proposed model is validated on real-time automation platform based on specifications of IEEE C37.1-2007, IEC 61131-3 and IEEE 1413-2010.

Research Paper

Reliability Assessment of Radial Distribution System with Different Automation Schemes of One and Half Breaker Substation

S. Deepti* , E. Vidya Sagar **
* Associate Professor, Department of Electrical and Electronics Engineering, Bhoj Reddy Engineering for Women, Hyderabad, Telangana India.
** Associate Professor, Department of Electrical Engineering, Osmania University, Hyderabad, Telangana, India.
Deepti, S., and Sagar, E. V. (2018). Reliability Assessment of Radial Distribution System with Different Automation Schemes of One and Half Breaker Substation. i-manager’s Journal on Power Systems Engineering, 6(3), 26-31. https://doi.org/10.26634/jps.6.3.15306

Abstract

A radial distribution system consists of 33/11 kV substation, 11kV feeders, distribution transformers, service mains and load points. The reliability of the radial distribution system has a significant influence on overall power system reliability. One of the method to improve the reliability of distribution system is automating both the substation and feeders. The automation process will reduce the restoration time after occurrence of fault and hence the annual average outage duration of load points decreases. In this paper (i) the effect of centralized star and redundant star automation schemes on load points of one and half breaker substation, (ii) the reliability indices of 11 kV radial feeder for non-automated and iii) automated scheme are evaluated. Further, the reliability indices of the complete distribution system for the above said cases are evaluated. Reliability of substation is evaluated using cut-set method and reliability of feeder is evaluated using Failure Mode and Effective Analysis Method (FMEA). Results obtained shows that redundant star automation scheme is better over the centralized star automation scheme. It is also concluded from the results that redundant star substation and feeder automation have more effective impact on distribution reliability.

Review Paper

Spectacular Simulation Review - Analysis of different wind turbine companies by Weibull Analysis

Sunil Kumar Jilledi* , Shalini J.**, Ashok Kumar Mechiri***
* Research Scholar, OPJS University, Churu, India, and Lecturer, Department of Electrical and computer Engineering, Mainefhi College of Engineering and Technology, Eritrea, East Africa
** Assistant Professor, Department of Dairy Engineering, Dairy Technology College, Sri Venkateswara Veterinary University, Andhra Pradesh, India.
***Associate Professor, Eritrea Institute of Technology, Asmara, Eritrea, East Africa.
Jilledi, S. K., Shalini, J., and Mechiri, A. K., (2018). Simulation Review - Analysis of Different Wind Turbine Companies by Wei bull Analysis for Powers Tacular. i-manager’s Journal on Power Systems Engineering, 6(3), 32-42. https://doi.org/10.26634/jps.6.3.15709

Abstract

Renewable energy sources are playing a vital role in the power sector. Among the renewable energy sources, wind energy is playing a vital role. As the power of wind energy system increases, the control of their system becomes complex. Active and reactive power becomes increasingly more important from a system to satisfy the load demand for the consumers. To improve the power production, in the market, many companies are in the competition. Weibull analysis is used for analysis of wind speed. Based on the wind probability distribution function (pdf), the power curve and power distribution is calculated. This paper provides the detail set of power production of different types of wind power plants. A case study has been performed using simulation software by considering the base data of the companies.