The invention discloses a dispatching method for achieving robust operation of an electrical power
system. The dispatching method comprises the steps that S1,
original data information is obtained; S2, under a certain confidence coefficient level, an upper limit and a
lower limit of a mean value of day-ahead, intra-day and real-time
wind power generation forecast errors, an upper limit and a
lower limit of day-ahead, intra-day and real-time
photovoltaic power generation forecast errors, and an upper limit and a
lower limit of day-ahead, intra-day and real-time load forecast errors are obtained; S3, a day-ahead dispatching plan, a robust
safe operation range corresponding to the day-ahead dispatching plan, an intra-day dispatching plan, a robust
safe operation range corresponding to the intra-day dispatching plan, a real-time dispatching plan and a robust
safe operation range corresponding to the real-time dispatching plan are obtained. According to the method, the rolling coordination technologies of forecast information, current operation information and historical operation information are considered simultaneously, the robust safe operation ranges of the
system are obtained, and therefore the dispatching plans are not limited to a unique preset value, and flexible dispatching in the robust ranges can be achieved. The obtained dispatching plans can be used for coping with stochastic volatility of
new energy power generation better, and safety and economical efficiency are both considered.