Control method for power generation by water level

Abstract

The invention discloses a control method for power generation by the water level. The control method is applied to a power generation system of a hydropower station. The power generation system comprises a first power generator, a second power generator, ... and an Nth power generator, and the value of N is a positive integer. An ith power generator executes the the following steps: judging whether the acquired first water level reaches the upper-limit water level of the ith power generator, starting up the ith power generator if yes, controlling the ith power generator to output a shut-down signal, and shutting down other started-up power generators except the ith power generator, wherein the value of i is equal to 1, 2, ... and N; acquiring the current regulating pulse width according tothe first water level; and controlling the active load of the running of the ith power generator to reach the active power Pi which corresponds to the current regulating pulse width. According to thecontrol method disclosed by the invention, one power generator can run on an economical water line as long as the water level information is acquired, so that the equipment cost is relatively low; furthermore, all power generators can be sequentially started up according to variations of the water level, so that no additional control equipment is needed; and accordingly, the quantity of fault links can be reduced.

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

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