Load shedding and dynamic partitioning coordination control method considering electric power safety accident risk

Abstract

The invention discloses a load shedding and dynamic partitioning coordination control method considering electric power safety accident risk, and belongs to the technical fields of an electric power system and automation thereof. According to the load shedding and dynamic partitioning coordination control method, the number of the maximum available dynamic partitioning operations is determined according to overload safety margin of equipment under preconceived faults; whether the equipment overload problem under the preconceived faults can be solved or not is verified under the maximum operating number constraint after each dynamic partitioning operation with qualified comprehensive control performance is implemented; if the equipment overload problem can be solved, the optimal dynamic partitioning operation combination is selected therefrom; if the equipment overload problem cannot be solved, the load-shedding performance cost ratio of each alternative load-shedding point is calculated by considering the electric power safety accident risk; and the load with the highest performance cost ratio is cut off in an iteration manner until the overload problem under the preconceived faults is solved. By adoption of the load shedding and dynamic partitioning coordination control method, the electric power safety accidents caused when the overload problem is solved by load shedding can be effectively reduced or eliminated, so that the operating management level of the power grid can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof. More precisely, the invention relates to a load shedding and dynamic partition coordination control method considering the risk of electric safety accidents. Background technique [0002] Order No. 599 of the State Council "Regulations on Emergency Response and Investigation and Handling of Electric Power Safety Accidents" (hereinafter referred to as the "Regulations") clarified that the load shedding of the stability control system is equal to the load lost due to failure, and that the proportion of regional load shedding is too high or the distribution of load is unreasonable. Lead to more serious accident ratings and accountability afterwards. On the one hand, this puts forward higher requirements for the formulation of load shedding control measures. It is necessary to carefully consider the load shedding method and the distribution of load shedding. Rea...

AI Technical Summary

Problems solved by technology

According to the overload safety margin of the equipment under the expected fault, the method determines the maximum available dynamic partition operands, and checks whether the operation of each dynamic partition whose comprehensive control performance meets the requirements can solve the equipment overload under the expected fault under the constraint of the maximum number of operands. , if it can be solved, then select the optimal combination of dynamic partition operations; if it can’t be solved, calculate the load shedding performance cost ratio of each alternative load shedding point taking into account the risk of electric safety accidents, iteratively remove the load with the highest performance cost ratio until Overload problem solving under expected failure

Images