优化的ANN-RF混合模型,具有在电力传输系统中故障检测和分类的可选功能
Hasan Uzel1, Yıldırım Özüpak2, Feyyaz Alpsalaz1
1Akdağmadeni Vocational School, Yozgat Bozok University, Yozgat, Turkey.
Scientific reports
|December 8, 2025
概括
本研究介绍了一种混合人工神经网络 (ANN) 和随机森林 (RF) 模型,用于精确检测电力传输网络中的故障. 它使用Optuna和SMOTE进行了优化,在识别各种故障类型方面实现了高性能.
科学领域:
- 电气工程 电气工程
- 计算机科学 计算机科学
- 机器学习 机器学习
背景情况:
- 电力传输网络是关键基础设施,需要强大的故障检测系统.
- 传统的方法经常与复杂的故障场景和数据不平衡作斗争.
- 机器学习为提高电网可靠性和安全性提供了有前途的解决方案.
研究的目的:
- 开发和评估混合人工神经网络 (ANN) 和随机森林 (RF) 模型,用于电力传输网络的故障检测和分类.
- 为了利用Optuna进行超参数优化和合成少数群体过量采样技术 (SMOTE) 来解决类不平衡.
- 将拟议模型的性能与传统和先进的机器学习分类器进行比较.
主要方法:
- 一个混合ANN-RF模型被开发和训练在来自11kV多发电机系统的合成数据.
- 模拟包括使用三相电流和电压信号的各种故障类型 (LG,LLG,LLLG).
- 使用Optuna进行超参数调整,并应用SMOTE来平衡数据集.
主要成果:
- 混合ANN-RF模型实现了高精度 (99.8%),精度 (99.5%) 和回忆 (99.4%).
- 该模型的表现优于K-最近邻居,包装,AdaBoost和梯度提升分类器.
- 性能优于修改的InceptionV3 (98.93%准确率) 和极端学习机器 (99.60%准确率).
结论:
- 由Optuna和SMOTE增强的拟议的混合ANN-RF模型为电力系统中故障检测提供了可靠和准确的解决方案.
- 集成ANN的特征提取和RF的稳定性,以及SMOTE,有效地处理复杂的故障和数据不平衡.
- 未来的工作应该集中在实时智能电网应用的现实世界数据验证和优化上.
相关概念视频
Power System Three-Phase Short Circuits
504
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
504
Line Protection with Impedance Relays
416
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
Under normal conditions, low load currents keep the measured...
416
Reclosers and Fuses
433
Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...
A comprehensive protection scheme for radial distribution...
433
Radial System Protection
410
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
410
Node Analysis for AC Circuits
615
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
615
Transformers with Off-Nominal Turns Ratios
493
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
493

