A control method for power generation according to water level

Abstract

The invention discloses a control method for power generation according to water level, which is applied to the power generation system of a hydropower station. The power generation system includes a first generator that starts up sequentially, a second generator until the Nth generator, where N is a positive integer, and the ith generator Perform the following steps: determine whether the collected first water level has reached the upper limit water level of the i generator, if so, start the i generator, and control the i generator to output a blocking signal, so that other generators except the i generator have started The generator is blocked, wherein, i=1, 2, ... N; get the current regulation pulse width according to the first water level; control the active load of the i generator to reach the active power P corresponding to the current regulation pulse width i . The invention only needs to collect the water level information to make the generator run on the economic water level, the equipment cost is low, and each generator can be started sequentially according to the change of the water level, without additional control equipment, thus reducing the failure links .

Description

technical field [0001] The invention relates to the field of hydroelectric power generation, in particular to a control method for generating power according to water levels. Background technique [0002] The water level of the forebay or dam of a hydropower station reflects the vertical height from the water storage level to the turbine inlet, and represents the potential energy of the water. The higher the water level, the greater the potential energy, and the more electricity can be generated with the same flow rate. In the existing power generation technology based on water level, the water level is generally adjusted by judging several position signals sent by the float switch. Since the float switch is easily affected by external environmental factors, such as being stuck by debris, the position of the float switch The signal is not accurate, which leads to imprecise control of the water level, and the power generation system of the hydropower station is generally cont...

AI Technical Summary

Problems solved by technology

In the existing power generation technology based on water level, the water level is generally adjusted by judging several position signals sent by the float switch. Since the float switch is easily affected by external environmental factors, such as being stuck by debris, the position of the float switch The signal is not accurate, which leads to imprecise control of the water level, and the power generation system of the hydropower station is generally controlled through the joint control of multiple generators, and it is also necessary to add a host computer monitoring system or a joint adjustment control device, which leads to automatic power generation according to the water level. The cost of the equipment is greatly increased, and the failure link is also increased

Images