Model-data combined driven power system real-time operation risk assessment method

Through the combined model-data method, the Monte Carlo method and the optimal load cutting and wind and light-blind optimal flow method are used to form a real-time grid operation scenario, and feature extraction and real-time risk assessment are combined with the convolutional neural network and support vector machine model, which solves the problem of difficulty in dealing with new energy uncertainty and volatility in traditional power systems, and achieves a more accurate assessment of the operation safety and stability of power systems.

CN119647969AActive Publication Date: 2025-03-18HARBIN INST OF TECH +2
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Patent Information

Application Number
CN202411795595.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-03-18
Estimated Expiration
2044-12-09

AI Technical Summary

Technical Problem

The risk assessment methods of traditional power systems are difficult to effectively deal with the uncertainty and volatility brought about by new energy. Especially in the case of large-scale access to new energy, how to comprehensively and accurately evaluate the safety and stability of the system has become a key issue that needs to be solved urgently.

Method used

The model-data joint drive method is adopted to form a real-time grid operation scenario that takes into account multi-source uncertainty through the Monte Carlo method, and risk calculation is performed by combining the optimal load cutting and wind and light abandonment optimal flow methods, and features are extracted using convolutional neural network and support vector machine model for real-time risk assessment.

Benefits of technology

This method can more accurately evaluate the operational safety and stability of the power system, improve risk identification and early warning capabilities, and take into account the economic and safety of the power system. It has important theoretical significance and extensive application prospects.

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Abstract

The invention provides a model-data combined driven power system real-time operation risk assessment method, and belongs to the field of power systems. According to the method, firstly, a Monte Carlo method is used for sampling to form a large number of power grid real-time operation scenes considering multi-source uncertainty; carrying out risk calculation on each real-time operation scene by utilizing an optimal load shedding and wind and light abandoning optimal power flow method, and accumulating risk indexes; training and learning each risk scene sample by using a convolutional neural network, extracting meaningful and related features in original data, and inputting the extracted features into a support vector machine model for regression training, so that the real-time operation risk assessment efficiency is greatly improved; and an important reference basis is provided for real-time operation risk assessment of the power system with high-proportion new energy access.
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