Method and system for automatically generating load shedding scheme under multiple time gradients and storage medium

Abstract

The invention provides a method and system for automatically generating a load shedding scheme under multiple time gradients and storage medium. The method comprises the following steps: collecting the calculation parameters of a load shedding scheme; taking the calculation parameters as input, and constructing an initial model according to constraint conditions; wherein the constraint conditionscomprise a load shedding time interval limiting constraint, a transformer substation sheared load proportion limiting constraint and a line transfer relation constraint; and optimizing the initial model to obtain a load shedding scheme under multiple time gradients, so that the overall load shedding qualification rate of each time gradient reaches a preset value, and the similarity between the line load curve under each time gradient and the typical load curve shape of the whole network reaches a preset value. According to the invention, through unified optimization of load shedding under multiple time gradients, the qualified rate of load shedding under all time gradients in the compilation scheme is improved; and by preferentially selecting the line with high similarity with the load curve of the whole network system for scheme arrangement, the overall stability and the anti-interference capability of the scheme are ensured.

Description

technical field [0001] The present invention relates to the technical field of power systems, in particular to a method, system and storage medium for automatically generating load shedding schemes under multi-time gradients. Background technique [0002] When the power system is subjected to serious and complex faults, there may be voltage collapse and frequency collapse. It is necessary to plan, rationally and quickly load shedding or disconnection through low-frequency load shedding and low-voltage load shedding, and quickly adjust the power generation output in the region. A new stable matching between power generation, power transmission and power consumption is formed to maintain the stable operation of the entire power grid, ensure the safety of the power grid and supply power to important users. Therefore, it has always been an important and urgent research topic in this field to ensure the safe and stable operation of the system, how to effectively control the amoun...

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Problems solved by technology

[0004] However, the inventors of the present invention have found in research and practice that regional dispatching technicians need to manually prepare and adjust plans. Facing the current situation of large amount of data and long time span, manual methods are not only inefficient but also difficult to implement. comprehensive data analysis; using a single load level as the basis for formulating a plan, it is difficult to meet the refined requirements of the compiled load shedding plan meeting the standard at 96 time points throughout the day

The refined load shedding scheme covering all hours of the day needs to consider the massive combination of hundreds of lines and 96 time points. The current manual statistical method is almost impossible to achieve, and the manual method cannot guarantee load shedding under multiple time gradients. pass rate

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