Download ANSI-IEEE 1010-1987 Guide for Control of Hydroelectric Power PDF

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Extra info for ANSI-IEEE 1010-1987 Guide for Control of Hydroelectric Power Plants

Example text

Raw water low flow A Trip is accomplished by winding temperature. Strainer differential pressure A CONVENTIONAL COOLING: DIRECT WINDING WATER COOLING: Rotating manifold high temperature A, P, T Control voltage failure A, P High conductivity A, P Chemical filter high conductivity A Cleaning necessary. Dissolved oxygen high A Water purification necessary. Rotor differential pressure A, P Low flow back-up or manifold failure. Stator differential pressure A Flow restriction. Raw water strainer high differential pressure A Cleaning necessary.

Typical water monitoring instrumentation and alarms would be as follows: 1) 2) 3) 4) Reservoir (headwater) level, an analog signal transmitted to the plant computer and to level recorders. Downstream (tailwater) level, an analog signal, same as above. Reservoir level switches, to give alarms if the level is above or below operating limits and to operate spillway gates if the level exceeds a set limit. Downstream level switches, to give alarms if the level drops below operating limits and to operate low-level release valves if the level drops below minimum water release limits.

Hydraulic, lubricating oil, other mechanical areas (1) Temperature (2) Smoke (1) Water deluge systemÑBearing overtemperature protection (covered elsewhere for generators) helps prevent ignition of lubricating oil. (2) CO2 or Halon 1301 system. Control equipment rooms,cable spread areas, switchgear (1) Temperature (2) Smoke (3) Heat detection cables (1) CO2 or Halon 1301 system. Fire protection and alarm and control systems can add signiÞcantly to the cost of a station; therefore, it is important to consider early in the design and to involve both Þre protection engineers and the insurance carrier in the design of the control system.

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