One-key quick tail water drainage system and method for pumped storage power station

Abstract

The invention belongs to the technical field of pumped storage power stations, and particularly relates to a one-key quick tail water drainage system and a method for a pumped storage power station. The system provided by the invention is characterized in that a compressed air system is connected with a tail water pipe of an unit through a pipeline, and an inflation valve is arranged on the pipeline. The pumped storage unit provided by the invention adopts a rapid tail water drainage mode, firstly, the drainage time is greatly shortened, sufficient time is provided for unit maintenance and equipment defect elimination, the available time of the equipment is effectively improved, and the pumped storage unit can serve a power grid fully. Secondly, compressed air is used for water drainage, so a lot of electric energy consumed by a drain pump is saved, especially during the equipment maintenance, and an air tank is generally needed for synchronous pressure discharge. The compressed air needed to be drained is used for draining water so as to achieve the effect of killing two birds with one stone. Thirdly, the one-key operation of an automatic process is used for improving the reliability and reducing the risk of operation. The one-key quick tail water drainage system and the method improve the efficiency and benefit of the pumped storage power station greatly, and the pumped storage power station can serve the power grid well.

Description

technical field [0001] The invention belongs to the technical field of pumped storage power plants, and in particular relates to a system and method for quickly discharging tail water with one button in a pumped storage power station. Background technique [0002] Generally, the pumped storage power station has two reservoirs, upper and lower. The pumped storage power station is equipped with a main inlet valve and a tailgate. Setting the main water inlet valve between the flow channels of the unit mainly plays the role of cutting off the upstream water flow, and setting the tailwater accident gate mainly plays the role of cutting off the downstream water flow. Sometimes it is necessary to empty the water between the main water inlet valve and the tailwater accident gate, check the flow-passing parts for entering the flow channel, weld the water-passing parts (anti-corrosion, flaw detection), check the water leakage of the gate, and seal the water leakage downstream of the m...

AI Technical Summary

Problems solved by technology

On the one hand, it affects the maintenance and downtime of the unit, on the other hand, it consumes a lot of power resources, and the operation is cumbersome, which affects the safety and stability of the equipment

Due to the long time required for drainage, the work efficiency cannot be further improved, and there are certain operational risks in the drainage process

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