Paper Title, Authors, Abstract (Issue 1, Volume 3, 2009)

Pages

Energy Efficient Lighting - A Way to Conserve Energy
Arvind Dhingra, Tejinder Singh

Abstract: Energy is the source that has been driving the mankind in this technological era. Usage of energy depicts the level of development of a nation. The energy resources of the world are under severe pressure to cope up with the growing need of energy. The technological changes and changes in the lifestyle have increased the demand for energy tremendously. With the resources become scarce and energy costs growing, it becomes imperative for everyone to save energy or to use the available energy judiciously. The need is to either find new sources of energy or to use the energy available carefully. Lighting forms a major chunk of load on our electrical power system. Energy efficiency in lighting involves building architecture, selection of proper luminaries and light sources. This paper presents the study of energy conservation measures adopted in a spinning unit. The payback period is also calculated.
 

A New Power Swing Detection Scheme for Distance Relay Operations
Ahmad Farid Bin Abidin, Azah Mohamed, Hussain Shareef

Abstract: This paper presents a new detection scheme based on the derivative of the line reactive power as seen by a relay to prevent distance relay mal-operation during power swings. This proposed scheme overcomes the shortcoming of conventional power swing detector (PSD) by removing the pre-defined R-X diagram. The conventional PSD has the difficulty in obtaining the timer setting at pre-defined R-X diagram due to varying cycle of power swings. To illustrate the effectiveness of the proposed detector, the simulation were conducted on the IEEE 39 bus test system using the PSS/E software. The results show the effectiveness of the proposed detection technique to distinguish between a fault, fault clearance and power swing in order to activate the correct relay trip signals during power swings.