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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0811737 (1991-12-23) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 27 인용 특허 : 0 |
A polyphase electric power distribution system is protected from the effects of geomagnetic storms by countering the difference of potential between spaced grounding points in the system, and or by altering the magnetic circuits of transformers in the system to reduce half-cycle saturation and assoc
A method for reducing direct current flowing between spaced ground points in a polyphase electric power distribution system having a plurality of transformers with windings connected to a common node at a location near one of the ground points, the method comprising the steps of: connecting between
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