Description
The book starts from the existed problems in fault analysis of the lumped-parameter circuit model. It firstly introduces the basic electromagnetic phenomenon, uniform transmission line guided electromagnetic waves, multi-conductor system guided electromagnetic waves, fault generated travelling waves; then it introduces series of the traveling waves based protections, which includes principle, technology and application in practical power grid; it also discusses the travelling waves based fault location and the travelling waves based fault feeder selector in China. It systemically reveals the essential features of the fault traveling wave and concludes the analytical solutions of the transient fault traveling waves and the modulus maxima representation of the dyadic wavelet transform of fault traveling waves. Finally, the book analyzes the acquisition of traveling waves and the sensor’s characteristics. A unique fault travelling wave test device has been invented based on the theories of the book and will be applied in real systems.
Table of Contents
Introduction.- Electromagnetic Wave Foundation.- Fault Line Wave Theory.- Wavelet Transformation.- Faulty line wave variation characteristics of transformers and secondary cables.- Transmission line vertical wave direction protection.- Transmission Line Vertical Wave Differential Protection.- DC Line Wave Protection.- Transmission line transient wave fault range.- Neutral point non-effective ground distribution grid single-phase ground selection line wave protection.- Wave Protection Test System.- Reference.- Appendix 1.- Appendix 2 Vector Computing Relationship.
