Static safety probability assessment method of new energy grid power system
A static safety probability, power system technology, applied in the direction of AC network circuit, single grid parallel feeding arrangement, electrical components, etc., can solve problems such as risk probability assessment of power system that cannot be connected to the grid of new energy
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[0078] In order to make the present invention easier to understand, the following descriptions are made:
[0079] 1. Since the output of wind power and photovoltaics as new energy has obvious randomness and seasonality, it is necessary to establish a time period model of meteorological elements to characterize the wind speed and sunshine intensity of each day of the year, and use the monthly change trend to fit. The function is superimposed with the probability distribution of the diurnal fluctuation component to characterize the meteorological characteristics of the t day of the year.
[0080] 2. Aiming at the static safety problem of the new energy grid-connected power system, the present invention proposes two kinds of system static safety probability evaluation indexes: 1) the system power flow exceeding the limit probability index, which is used to characterize that the system is in a normal operation state due to the change of the output of the new energy. The probabilit...
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