Title :
Quick evaluation of voltage surge in electrical power systems
Author_Institution :
Ralph M.Parsosns Co., Pasadena, CA, USA
Abstract :
The lattice diagram has been widely recognized and adopted to analyze the voltage surges produced at a particular location in an electrical system. These transient surges are caused by traveling waves induced by lightning strokes or switching operations. A lattice diagram can be used effectively, but the required computations are tedious. A simplified approach based on mathematical derivation is presented. The method will permit a quick evaluation of both initial and crest surge magnitudes as well as a wave shape that are all based on a given incoming surge and the surge impedances of the electrical elements involved. Sample calculations from the lattice diagram and the proposed quick evaluation are compared
Keywords :
electric impedance; electrical faults; lightning protection; power system transients; surges; crest surge magnitude; electrical power systems; initial surge magnitude; lattice diagram; lightning strokes; surge impedances; switching operations; transient surges; traveling waves; voltage surge evaluation; wave shape; Impedance; Lattices; Lightning; Power system analysis computing; Power system transients; Power systems; Reflection; Shape; Surges; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
