Method for controlling pumping of pump units in a wet well
AssigneeWater Resources Agency, Ministry of Economic Affairs
InventorsChung-Hsien LU, Ya-Ching CHANG, Hao-Ting CHAO, Hsin-Yi CHUNG
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Abstract
A method for controlling pumping of a plurality of pump units in a wet well is disclosed. The method uses a genetic algorithm to determine which of the pump units is to be started and its initial operating frequency when the liquid level in the wet well reaches a first predetermined level for pumping. During the pumping process, the pumping control method monitors the liquid level in the wet well in real time to obtain real-time state information and fine-adjusts the initial operating frequency of the pump unit to be started according to the real-time state information. Therefore, the present disclosure achieves optimum efficiency and energy saving.
Claims9
A method for controlling pumping of a plurality of pump units in a wet well, comprising the steps of:
- (1) monitoring inflow of the wet well;
- (2) when a liquid level in the wet well reaches a first predetermined level for pumping, calculating an objective through an algorithm according to pumping performances of the pump units and the inflow so as to determine one of the pump units to be started and an initial operating frequency thereof and to generate an initial control signal;
- (3) sending the initial control signal to the one of the pump units to be started, and setting the initial operating frequency to the one of the pump units to be started for pumping;
- (4) monitoring the liquid level in the wet well in real time to obtain real-time state information;
- (5) determining whether a fine adjustment condition is met according to the real-time state information, wherein when the fine adjustment condition is met, the initial operating frequency for the one of the pump units to be started is fine-adjusted and the step (4) is performed, and when the fine adjustment condition is not met, the step (6) is performed;
- and
- (6) determining whether the liquid level in the wet well reaches a second predefined level for stopping pumping, wherein when the liquid level in the wet well reaches the second predefined level, the pump units are stopped, and when the liquid level in the wet well does not reach the second predefined level, the step (4) is performed.
Dependencies are inferred from the claim text.