International Journal of Electrical and Electronics Engineering Research (IJEEER) ISSN(P): 2250-155X; ISSN(O): 2278-943X Vol. 3, Issue 5, Dec 2013, 133-136 © TJPRC Pvt. Ltd. CORONA EFFECT ON TRANSMISSION LINES ASHOK KUMAR Associate Professor, Dr. K.N. Modi Institute of Engineering and Technology, Modinagar, Uttar Pradesh, India ABSTRACT The system of generation of electricity is generated at 11 kv universally adopted, then the process of transmission and distribution of electrical energy will be trough to different types of customers may be commercial, industrial and domestic. After complete process transmission line lose has been taken place in the form of corona loss and ohite losses. In this paper a brief idea about corona loss, hoe reduces of corona loss will be discussed. Due to this loss energy type of consumers has facing the problem of less electricity more till. It is a reason of financial losses of electrical industries. Availability of electric power has been most powerful that to provide industrial, domestic and commercial for any country. Electric power is transmitted trough transmission line which delivers a large amount of power from generating stations to load canters and different types of consumers. In this paper, a mathematical model of losses through transmission line was developed for corona loss and ohmic loss. KEYWORDS: Corona, Transmission Line Losses, Skin Effect, Critical Disruptive Voltage, Visual Critical Voltage INTRODUCTION Electrical energy is generated at power station which are located faraway from different types of load centers. Through a network is develop from one place to required place by using conductors ie transmission line, then distribution of electrical energy. Knowledge of power losses on transmission line and how to reduce these loses is a main component for different flow of power in any electrical network. General Concept of Basic Corona and Transmission Lines Transmission Line Losses, includes various losses namely conductor loss, radiator losses, ohmic loss and corona losses etc. Skin Effect The tendency of alternating current to spread out on the outer surface of conductor is greater than that its central part or its care, then the resistance of the conductor is increase ie 1.6 of the resistance called skin effect. If resistance if conductors is increase the ohmic loss (I 2 R) will also increase properly. Corona The phenomenon of violet glow, hissing noise and production of ozone gas is an overhead transmission line is called as corona. If the conductors are smooth and polished, the corona glow will be uniform otherwise, the rough plots will be appear brighter is as but in dc voltage, this problems is less in comparative to ac voltage