전기철도의 이상전압 대책을 위한 공통접지시스템에 관한 연구

Abstract

Grounding is the establishment of a common reference voltage(typically 0 [V]) between power sources and/or electrical equipment. Electrical ground faults, short circuits, lightning, and transients can occur in electrical power supply and distribution system or the facilities power systems. These design criteria specify requirements for the protective provisions relating to electrical safety in structures associted with the traction system and to any structures that amy be endangered by traction power supply system or the facilities power system, and to any automatic train control, communications, or other electronic equipment that must be protected from electrical shocks. Grounding, bonding and lightning protection shall be designed to address three purposes : personal safety; equipment, cabling and building protection; and equipment noise reduction. In principle, to assure the integrity of the grounding and bonding systems and the longevity of the system components, particularly for buried or encased elements, the bonding and grounding designs shall create duplicate electrical continuity paths and provide for redundancy in jumpers and bonds. Grounding, bonding, and lightning protection is multi-disciplinary in nature. The design shall consider and miyigate the negative effects of lightning, grounding potential rise, cintact with electrical power circuit, and induction. The various discipline designers must collaborate with on another to coordinate the overall grounding and bonding design, so that a consistent approach is used and applied by each discipline in the development of the electrical, power and structural grounding and bonding and lightning protection.