A high-permeability wind-solar-hydropower active power control method based on cross-section safety constraints

Abstract

The invention belongs to the technical field of power system economic dispatching, and specifically relates to a high-permeability wind-light-hydropower active power control method based on cross-section safety constraints. The control method divides the cross-section into four states: safety, early warning, critical buffer and limit violation , where the establishment of the critical buffer state can avoid over-limits caused by factors such as inaccurate response of the plant and station, so as to realize the maximum output of the plant and station under the fully utilized section; at the same time, combined with the evaluation and scoring of the power plant and station, it can punish the inappropriate access Friendly factories and stations, and rewards for accessing friendly factories and stations, so as to promote positive response and fair scheduling of factories and stations to instructions; this method also considers the trigger mechanism of emergencies, eliminating the cross-section limit caused by various events, without waiting The end of the instruction cycle ensures the safety of the section; the "outside-to-inside" section search method is adopted to ensure a large-scale fair scheduling under multiple nested sections.

Description

technical field [0001] The invention belongs to the technical field of electric power system economic dispatching, and in particular relates to a high-permeability wind-light-water active power control method based on section safety constraints. Background technique [0002] my country has built large-scale wind farms, hydropower stations and photovoltaic power station groups. Due to the high penetration rate of new energy and its output randomness and volatility in some areas, improper regulation of new energy can easily cause transmission congestion in outgoing channels, affecting the safe and stable operation of the power grid and the efficient delivery of new energy. Since new energy delivery channels are often composed of multi-level sections, and each section is connected to many different plants and stations, it is necessary to formulate a real-time scheduling control strategy for wind, light, and water that takes into account the safety constraints of multi-level nes...

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Problems solved by technology

[0003] Issues related to high-penetration new energy dispatching control are one of the current research hotspots, but the existing traditional control strategies cannot effectively deal with the frequent transgression of sections caused by special circumstances, and the feedback on the command response of the plant is not timely enough. The active power control sequence for multiple nested sections also needs to be improved

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