Dispatching method for achieving robust operation of electrical power system

Abstract

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.

Description

technical field [0001] The invention belongs to the field of electric power systems, and more specifically relates to a scheduling method for realizing robust operation of electric power systems. Background technique [0002] Due to inherent intermittency, volatility, and low predictability, the integration of large-scale renewable energy into the grid poses great challenges to power system dispatching. Different from traditional power systems that rely mainly on deterministic power sources such as thermal power, hydropower, and nuclear power, future power systems that include large-scale wind power, photovoltaic power generation, and energy storage are called new power systems. How to formulate a safe, reliable and economical dispatch plan to deal with various uncertain factors is the bottleneck problem restricting the large-scale development of renewable energy, and it is also the most concerned issue of the power system dispatching department at present. Among the existi...

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Problems solved by technology

[0008] Aiming at the above defects or improvement needs of the prior art, the present invention provides a dispatching method to realize the robust operation of the power system, thereby solving the problem that the existing dispatching technology tends to be too robust (economic decline) or too conservative ( reduced security) technical issues

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