PROTECTION APPARATUS OF ELECTRIC POWER SYSTEM
According to an embodiment of the present invention, a protection apparatus of an electric power system comprises: a ground circuit having a switch arranged between a neutral point and a ground of a main transformer; a transformer for generating image voltage from a second-side transmission line of...
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| Format: | Patent |
| Sprache: | eng ; kor |
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| Zusammenfassung: | According to an embodiment of the present invention, a protection apparatus of an electric power system comprises: a ground circuit having a switch arranged between a neutral point and a ground of a main transformer; a transformer for generating image voltage from a second-side transmission line of the main transformer; and an overvoltage relay for opening and closing the switch according to the image voltage.
본 발명의 일 실시예에 따른 전력 계통의 보호 장치는 주변압기의 중성점과 접지 사이에 배치되는 스위치를 구비하는 접지 회로; 상기 주변압기의 2차측 송전선으로부터 영상 전압을 생성하는 변성기; 및 상기 영상 전압에 따라 상기 스위치를 개폐하는 과전압계전기; 를 포함할 수 있다. |
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