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

Sample text

FIG. 3H-1) DESCRIPTION TYPE Power supply for dc control and indication circuits DC H-3, H-4, H-8, H-9, H-10, H-12, H-14, H-15, H-16, H-18, H-19 One or more separate supplies depending on power distribution arrangement. Power supply for hydraulic pressure system pumps AC H-14 One or more separate supplies depending on number of pumps and required redundancy. Alternate supply for governor power supplies AC H-8 Air supply for generator air brakes A H-16 Air supply for hydraulic pressure system A H-14 Cooling water for hydraulic fluid sump W H-14 NOTES (Optional) TYPE AC =AC Power DC =DC Power A =Air W =Water 3I.

48 Copyright © 1988 IEEE All Rights Reserved HYDROELECTRIC POWER PLANTS IEEE Std 1010-1987 Table 3T-1 ÑFire Protection EQUIPMENT OR AREA TYPE OF DETECTOR TYPICAL RESPONSE Generator (1) Temperature (2) Smoke (3) Differential relay trip (1) CO2 system (enclosed units only). Discharge CO2, trip unit. (2) Water deluge systemÑDo not spray on differential relay trip. Do not use smoke detectors. Need more than one detector to operate before spraying. Some plants rotate unit with field breaker open while deluge system operates.

The one-line diagram for semi-synchronous starting is similar to that for synchronous starting. Therefore, reference is again made to Fig 3K-4. Static Starting. A static starter is a converter/inverter combination that converts station auxiliary power into a variable frequency output of sufÞcient magnitude to accelerate the motor unit. As in synchronous starting, the static starter is electrically connected to the unit through a bus, but isolated from the system. At the beginning of the start sequence, excitation is applied to the unit and the static starter is energized from station service.

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