A technical water supply control method for a hydroelectric generating set

Abstract

The invention discloses a water supply control method for a water-turbine generator set technique. The water supply control method includes a water supply control method of a water pump and a water intake control method of a top cover. According to the water intake control method of the top cover, automatic switching to water supply by the water pump can be conducted under the three conditions that (1) the pressure or flow of a water supply main pipe is lower than a set value, a three-way valve is switched to the drain position in a delayed mode, and then the water pump is started; (2) the pressures of the top cover are high, the pressures of the top cover are obtained from a water intake main pipe of the top cover and a pressure transmitter at the front end of a pressure relief valve of the top cover, the three-way valve is switched to the drain position when any pressure of the top cover is high, two electric drain valves for the drain valve of the top cover are opened at the same time for pressure relief, the electric drain valves are closed when the three-way valve is switched to the drain position and the high pressures of the top cover reset, and the water pump is started at the same time; and (3) a monitoring far end sends a command for switching from water intake of the top cover to water supply of the water pump. According to the water supply control method for the water-turbine generator set technique, the water supply control flow of the water-turbine generator set technique is designed optimally, so that the water supply mode is made safe and reliable.

Description

technical field [0001] The invention relates to the technical field of hydraulic turbine water supply technology, in particular to a technical water supply control method for a hydraulic turbine generator set. Background technique [0002] The water supply of hydropower station includes technical water supply, fire water supply and domestic water supply. Technical water supply, also known as production water supply, is mainly used to cool operating equipment (such as thrust bearings of generators, guide bearings, air coolers, turbine guide bearings, and main transformers), and secondly to provide certain pressure cleaning for the working seals of turbines. The water source is also used for lubrication (such as rubber pad guide bearings of deep well pumps) and hydraulic operation (such as jet pumps, main valves of high-head power stations, etc.), which is an indispensable component to ensure the safe and economical operation of hydropower stations part. For hydro-generators...

AI Technical Summary

Problems solved by technology

There are defects in the existing control method of water supply of hydroelectric generating set technology, which affects the safety and reliability of water supply

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