Case studies on electromagnetic disturbances of control circuits in power stations and substations experienced in Japan

This paper has presented case studies on electromagnetic disturbances of control circuits in power stations and substations experienced in Japan as a part of a companion paper summarizing the disturbed equipments, the causes and the influences of the disturbances. Cases of the disturbances are demonstrated and the detail of each case is explained. Also a brief explanation has been given in Appendix for Japanese Electrotechnical Commission standard JEC-0103-2004 for test voltages of control circuits which was based on the experiences of disturbances presented in this paper and a companion paper.