Online optimization decision method and system for manual emergency load reduction and storage medium

Abstract

The invention discloses an online optimization decision method and system for manual emergency load reduction and a storage medium. The method includes the following steps of: carrying out safety evaluation on the current operation state of a power grid to obtain a safety margin; for the situation that the safety margin does not meet the requirements of safe operation of the power grid, calculating a real-time manual emergency load reduction strategy meeting the safety constraint; for the situation that the safety margin meets the requirements of safe operation of the power grid, simulating the expected faults defended by an automatic safety device, and carrying out safety evaluation on the quasi-steady-state operation mode of the power grid after the expected faults; and for the situationthat the requirements of safe operation of the power grid are not met after the expected faults, calculating an expected fault manual emergency load reduction strategy meeting the safety constraint.According to the scheme of the invention, the risk that the power grid does not meet the requirements of safe and stable operation due to offline load reduction strategy mismatch or insufficient control amount of the automatic safety device can be eliminated, and the risk cost of manual emergency load reduction accidents can be reduced.

Description

technical field [0001] The invention relates to an online optimization decision-making method, system and storage medium for artificial emergency load shedding, and belongs to the technical field of power systems. Background technique [0002] With the continuous increase of the cross-regional power transmission scale of the UHV AC-DC hybrid grid, the characteristics of the UHV large-capacity DC multi-infeed and high-proportion receiving-end grid are becoming more and more obvious. The transmission capacity has become the main factor affecting the safe operation of the power grid. In order to solve the frequency, voltage and cross-section limit problems of the receiving end power grid after AC and DC faults, emergency load shedding measures have become a necessary and effective control resource. [0003] Usually, some typical power grid operation modes are set by power grid operation mode personnel based on power grid analysis experience, and the safety and stability of typi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide an online optimization decision-making method, system and storage medium for artificial emergency load shedding, which can eliminate the mismatch of off-line strategies for load shedding of safety devices or insufficient control amount to cause the power grid to fail to meet safety requirements. The risk of stable operation requirements reduces the risk cost of artificial emergency load shedding accidents

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