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A Dynamic Security Assessment Method of Power System Based on Hybrid Integrated Model

A power system, dynamic security technology, applied to biological neural network models, electrical components, circuit devices, etc., can solve problems such as insufficient generalization ability, low learning ability of big data, excellent generalization ability, evaluation accuracy and evaluation speed, etc. , to achieve good generalization ability, reduce training burden, and avoid feature redundancy

Active Publication Date: 2022-04-08
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are low learning ability for big data, insufficient generalization ability, and limited applicability
[0006] To sum up, the current methods for power system dynamic security assessment are difficult to have excellent performance in terms of generalization ability, evaluation accuracy and evaluation speed. there is a problem

Method used

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  • A Dynamic Security Assessment Method of Power System Based on Hybrid Integrated Model
  • A Dynamic Security Assessment Method of Power System Based on Hybrid Integrated Model
  • A Dynamic Security Assessment Method of Power System Based on Hybrid Integrated Model

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Embodiment

[0110] The present invention is tested on an IEEE 39 node system and a 1648 node system, wherein the IEEE 39 node system includes 39 nodes and 10 generators. The 1648-node system contains system elements such as 1648 nodes, 313 generators and 2294 transmission lines. The test of the present invention is carried out on a computer equipped with an Intel Core i7 processor and 8GB memory, and the test results have been obtained. Through PSS / E software to simulate a series of faults in the line, combined with the historical operation data of the power system, 4215 samples were obtained for the IEEE 39-node system, and 8936 samples were obtained for the 1648-node system. The test process was carried out by five-fold cross-validation method verify.

[0111] The hybrid ensemble model of the present invention adopts 100 ELMs and 100 RVFLs to integrate, and in the test process, adopts accuracy rate AC, precision rate PR, recall rate RE and the harmonic mean F of PR and RE 1 metrics to...

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Abstract

A method for dynamic security assessment of power systems based on a hybrid integrated model, including the following steps: Step 1: Construct corresponding dynamic security indicators, and establish an initial sample set including several power system operating variables and corresponding security indicators; Step 2: Construct high-efficiency samples set; Step 3: Obtain a dynamic security assessment model that can accurately evaluate the operating status of the power system; Step 4: Based on the real-time monitoring data of the synchronous vector measurement device, select the key characteristic variable data and input it into the DSA model to realize the online DSA of the power system. The purpose of the present invention is to provide a dynamic security assessment method of power system with good generalization ability. Damage caused by failure.

Description

technical field [0001] The invention belongs to the field of dynamic security assessment of electric power systems, and in particular relates to a method for dynamic security assessment of electric power systems based on hybrid integration models. Background technique [0002] With the rapid development of our country's society and economy, the power system industry has also undergone major changes, and people's dependence on the power system is becoming stronger and stronger. With the rapid development of the power system, the access of large-scale renewable energy and the wide-area interconnection of the power system, the security and stability of the power system have become particularly prominent. The importance of system security control and dynamic security assessment cannot be ignored. How to use the most effective control decision in a wide area and in a short time has become a key issue in improving the dynamic stability of power systems. Timeliness and accuracy ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06G06N3/04G06K9/62H02J3/00
CPCH02J3/00G06Q10/06393G06Q50/06H02J2203/20G06N3/045G06F18/2113
Inventor 刘颂凯刘炼陈浩晏光辉钟浩邱立鲍刚周颖谭超李迎春袁建华张彬桥胡文斌
Owner CHINA THREE GORGES UNIV
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