Method for calculating differential equation of one-tube multi-machine hydroelectric generating set adjusting system
A technology for regulating systems and hydroelectric units, which is applied in calculation, computer-aided design, electrical digital data processing, etc., and can solve problems such as inconvenient torque models
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[0065] The present invention will be further described below in combination with the accompanying drawings and specific embodiments.
[0066] This example is calculated based on the data of a certain hydropower station. The power station is arranged in the form of one pipe and three machines. The water hammer wave velocity in the pipe is α = 1100 (m / s). The characteristic parameters of the hydraulic system are shown in Table 1:
[0067] Table 1: Characteristic parameters of the hydraulic system
[0068]
[0069] Turbine parameters: rated flow Q r =53.5(cubic meter / second), rated water head H r =312(m), main servomotor time constant T y = 0.5 (seconds).
[0070] The turbine governor adopts step input, and the control parameter u is directly given according to the load change.
[0071] Simulation working condition: analyze the three units of the power station under the condition of load step. The duration of the experiment is 20s, which is divided into two moments. When...
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