A method for setting the speed unequal rate function of primary frequency modulation
A technology of speed unequal rate and function, applied in the field of rate function setting, can solve problems such as unfavorable power grid frequency stability, reducing unit economy, and increasing the number of inspections.
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Taking a 300MW subcritical thermal power unit as the implementation object, set its primary frequency modulation speed unequal rate function according to the method described in the application of the present invention.
[0024] (1) Determine the small fluctuation range of the unit speed
[0025] Take the unit speed signal w within 24 hours of the unit, and count its fluctuation range. The statistical results are: the maximum speed is 3002.9r / min, the minimum is 2997.8r / min, and the maximum speed deviation Δw is calculated max :
[0026]
[0027] (2) Set the speed unequal rate function
[0028] (2.1) Determine the maximum / minimum value of the frequency modulation power increment of the speed uneven rate supplementary function
[0029] The original speed unequal function f(x) of the thermal power unit, see figure 1 , as shown in the followi...
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