[특허]Protection system for controller and control wiring induced under voltage faults in an electric power generating system

Protection system for controller and control wiring induced under voltage faults in an electric power generating system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02H-007/06
출원번호	US-0098691 (1993-07-28)
발명자 / 주소	Good Jef W. (Beloit WI) Mrowiec David J. (Rockford IL)
출원인 / 주소	Sundstrand Corporation (Rockford IL 02)
인용정보	피인용 횟수 : 32 인용 특허 : 0

초록 ▼

A protection system minimizing utilization equipment\s exposure to, and power interruption resulting from, an under voltage condition in an electric power generating system includes generator current sensors, generator speed information, an exciter current sensor, voltage sensors, and a controller. The controller utilizes a voltage level detector which calculates an average voltage magnitude and generates a control signal when the average voltage magnitude drops below a threshold, and which monitors the peak value of each phase voltage and generates a lock out signal when any one of the phase voltages exceeds a threshold; a current detector which generates an enable signal when the magnitude of the highest phase of the generator current is less than a threshold; an exciter current detector which generates a second enable signal when the exciter current is outside an acceptable operating range; a generator speed monitor which generates a control signal when the generator speed is above a minimum regulation speed; protection logic which generates a protective trip signal; and breaker drivers which control the position of system breakers to isolate the fault and re-energize the system loads. The protection logic discriminates between an under voltage condition caused by an overload or a through fault on a main load bus, and one caused by a failure in the controller or associated wiring.

대표청구항 ▼

A protection system for an electric power generating system minimizing system exposure to, and power interruption resulting from, an under voltage condition, comprising: means for sensing electrical current generated by a first generator unit, said generator current sensing means producing output generator current sense signals proportional to the magnitude of the generator current sensed thereby; means for sensing an aircraft engine speed signal, said speed sensing means producing a generator input speed sense signal therefrom; means for sensing generator exciter drive current, said exciter sensing means producing an output exciter drive current sense signal proportional to the magnitude of the exciter drive current sensed thereby; means for sensing alternating current voltage generated by said first generator at a point of regulation, said voltage sensing means producing voltage sense signals proportional to the magnitude of the alternating current voltage sensed thereby; and a controller, responsive to said output generator current sense signals, said generator input speed sense signal, said voltage sense signals, and said output exciter drive current sense signal, for discriminating between an under voltage condition caused by an overload or a through fault on a main load distribution bus and an under voltage condition caused by a failure within said controller or associated wiring.

이 특허를 인용한 특허 (32)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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Protection system for controller and control wiring induced under voltage faults in an electric power generating system 원문보기

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Protection system for controller and control wiring induced under voltage faults in an electric power generating system 원문보기

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이 특허를 인용한 특허 (32)

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