An algorithm for power transmission line fault detection based on improved YOLOv4 model.
Su Yan1, Lisha Gao2, Wendi Wang3
1Nanjing Suyi Industry Co., Ltd, Nanjing, 210000, Jiangsu Province, China.
Scientific Reports
|February 29, 2024
Summary
This study optimized the YOLOv4 network for real-time power transmission line fault detection. The enhanced model significantly reduces parameters and boosts detection speed, ensuring accuracy.
Area of Science:
- Electrical Engineering
- Computer Vision
- Artificial Intelligence
Background:
- Real-time fault detection in power transmission lines is critical for grid stability.
- Existing methods often face challenges with accuracy and computational efficiency.
Purpose of the Study:
- To optimize the YOLOv4 network for improved power transmission line fault detection.
- To reduce model parameters and enhance detection speed while maintaining accuracy.
Main Methods:
- Replaced YOLOv4's backbone with a lighter EfficientNet network.
- Incorporated Grouped Convolution modules into the feature pyramid.
- Utilized data augmentation and the DIoU loss function.
Main Results:
- Reduced model parameters by 81% (to 43.65 million).
- Increased frame rate by 85% to 24 frames per second.
- Demonstrated superior performance in loss function optimization and detection speed.
Conclusions:
- The optimized YOLOv4 model offers a more efficient and accurate solution for power transmission line fault detection.
- The proposed enhancements significantly improve computational efficiency and detection reliability.
Related Concept Videos
Reducing Line Loss
152
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
152
Lossy Lines and Overvoltages
88
Transmission-line series resistance and shunt conductance cause three primary effects: attenuation, distortion, and power losses.
Attenuation
When constant series resistance and shunt conductance are present, voltage and current equations are modified. The propagation constant indicates that voltage and current waves consist of both forward and backward traveling components. These waves attenuate as they propagate, with the attenuation factor related to the resistance and conductance. In a...
Attenuation
When constant series resistance and shunt conductance are present, voltage and current equations are modified. The propagation constant indicates that voltage and current waves consist of both forward and backward traveling components. These waves attenuate as they propagate, with the attenuation factor related to the resistance and conductance. In a...
88
Transmission Line Design Considerations
135
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
135
Fault Types
86
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
86
Power System Three-Phase Short Circuits
84
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...
84
Maximum Power Flow and Line Loadability
111
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
111


