The Proceedings of the 18th Annual Conference of China Electrotechnical Society: Volume VI (Lecture Notes in Electrical Engineering, 1168)

Contents An Infrared and Visible Image Fusion Method Based on Improved GAN with Dropout Layer 1 Introduction 2 Related Work 2.1 Generative Adversarial Network 2.2 Improvement of Discriminator Network Generalization by Dropout 3 Methods 4 Experiments 4.1 Dataset 4.2 Experimental Results 5 Conclusion References Thermal Resistance Network Modeling of Integrated Switched Reluctance Motor Drive System 1 Introduction 2 TRN Modeling of IMDS 2.1 TRN Model of SRM 2.2 TRN Modeling of the PCB 2.3 Thermal Coupling Between SRM and Drive 2.4 Finite Element Model Simulation and Validation 3 Conclusion References DC Flashover Characteristics of Fluorosilicone Rubber-PEEK Interface in Underwater Electrical Connector 1 Introduction 2 Experimental Platform and Experimental Method 2.1 Experimental Platform 2.2 Experimental Method 3 Flashover Characteristics of Solid-Solid Interface Under Different Normal Pressures 4 Analysis of Contact Characteristics and Flashover at Solid-Solid Interface 5 Conclusion References Multi-objective Optimization Control of Active Magnetic Bearing-Rotor System Based on Multi-Dimensional Visualization 1 Introduction 2 Mathematic Model of AMB Rotor System 3 Multi-objective Constraint Model 3.1 Equivalent Stiffness and Damping 3.2 Maximum Amplitude 3.3 Robustness 3.4 Optimization Model 4 Solving Multi-objective Constraint Model 5 Simulation Results and Analysis 5.1 Robustness Analysis 5.2 Analysis of Vibration Control Characteristics 6 Conclusion References Study on Influence of Contact Structure on Phase Shift Time of Magnetic Field in Vacuum Under Various Current Frequencies 1 Introduction 2 Simulation Model and Setup 3 Simulation Results 4 Conclusion References Analysis and Application of a 66 kV Self-extending Cable Joint 1 Introduction 1.1 Common Cable Connector Types 2 Methods 2.1 Design of the Structure 2.2 Key Points of Connector Production and Installation 3 Application Case 4 Conclusion References Analysis and Optimization of Adjust-Free Rate of Balanced Force Relay Contact System 1 Introduction 2 Analysis Method of Contact System Adjust-Free Rate of Relay 2.1 The Definition of the Contact System Adjust-Free Rate 2.2 Random Matching Process in Final Assembly 3 Contact Pressure Simulation Analysis of the Balance Force Relay 3.1 Establishment of Contact Pressure Simulation Model 3.2 Research on Key Influencing Factors of Contact System Adjust-Free Rate 4 Consistency Improvement of Key Parameters in Assembly 4.1 Optimization of Armature Stroke Consistency Based on Robust Design 4.2 Improvement of Contact Gap Consistency Based on Assignment Problem and Hungarian Algorithm 5 Optimization Scheme of Contact System Adjust-Free Rate 5.1 Adjust-Free Rate Optimization Scheme Based on Neural Network 5.2 Experimental Verification of Optimization Scheme 6 Conclusion References Research on the Intensive Construction Plan of Edge Cluster for Digital Converter Station 1 Introduction 2 Research on the Intensification of Edge Clusters 2.1 Requirements for Intensive Construction of Edge Cluster 2.2 Edge Cluster Intensive Architecture 3 Efficient Storage for Edge Cluster Storage Pool 3.1 Existing Storage Pool Storage Methods 3.2 Improvements in Storage Pool Storage Methods 4 Dynamic Scheduling of Edge Cluster Computing Resources 5 Conclusion References Optimal Design of Copper Foil Inductors with High Energy Storage Density Based on Genetic Algorithm 1 Introduction 2 Calculation 2.1 Structure Analysis of Energy Storage Inductance 2.2 Inductance Calculation 3 Genetic Algorithm Optimization Design 3.1 Single Objective Optimization Problem 3.2 Optimization Results of Structural Parameters 4 Simulation Verification and Power Module Design 4.1 Electromagnetic Field 4.2 Temperature Field 5 Conclusion References A Feature Enhancement Method for Operating Sound Signal of High Voltage Circuit Breaker Based on VMD-Wavelet Threshold 1 Introduction 2 Principle of VMD and Wavelet Threshold Denoising 2.1 Principle of VMD 2.2 Principle of Wavelet Threshold Denoising 3 Analysis of the Measured Operating Sound Signal of HVCB 3.1 Experimental Platform 3.2 Noise Reduction Effect of Sound Signal Under Normal Condition 3.3 Feature Enhancement Effect of Sound Signal Under Fault Condition 4 Conclusion References Detection of Carbon Particle Pollutants in Transformer Oil Based on the Microfluidic Imager 1 Introduction 2 Experimental Setup and Methods 2.1 Sample Preparation 3 Experimental Platform and Method 4 Experimental Results and Discussion 5 Conclusions References Aging Degree Detection of Insulator Umbrella Skirt Based on Laser-Induced Breakdown Spectroscopy 1 Introduction 1.1 A Subsection Sample 2 Summary of Experiment 3 Test Results and Chemical Composition Prediction 3.1 A Subsection Sample 3.2 A Subsection Sample 4 Conclusion References Research on the Influence of Air Pressure and Mixture Concentration on the Discharge Characteristics of High-Frequency nSDBD 1 Introduction 2 Experimental Setup 3 Results and Discussion 3.1 The Influence of Gas Pressure on High-Frequency nSDBD Characteristics 3.2 The Influence of Mixture Concentration on High-Frequency nSDBD Characteristics 3.3 The Influence of Dielectric Thickness on High-Frequency nSDBD Characteristics 4 Conclusions References Study on Amplitude Characteristics of Electromagnetic and Vibration Parameters for “Plug-in” Type High-Voltage Conductor Connection Structures in GIS 1 Introduction 2 Vibration Calculation Method with “Electromagnetic-Mechanical” Coupled 3 Finite Element Calculation Model of the “Plug-In” Type High-Voltage Conductor Connection Structures 4 Analysis of Electromagnetic and Vibration Parameter Distribution Characteristics of the “Plug in” Type Connection Structures 4.1 Distribution Characteristics of Electromagnetic Parameters 4.2 Distribution Characteristics of Vibration Parameters 5 Conclusion References A Solution for Maintaining Power Failure of High-Power Airborne Equipment 1 Introduction 2 Total Solution 2.1 Whole Architecture 2.2 Definition of Requirements for State Transition 2.3 State Machine Definition 3 Simulation Verification 4 Product Validation 5 Conclusions References Study of Direct Carbon Emissions During Operation of Oil-Immersed Equipment in Substations 1 Introduction 2 Direct Carbon Emission Behavior of Oil-Immersed Equipment 3 Level of Direct Carbon Emissions from Oil-Immersed Equipment 4 Comparative Analysis of Carbon Emissions from Oil-Immersed Equipment Under Different Conditions 4.1 Impact of years of Operation 4.2 Impact of Geographic Location 4.3 Effect of Voltage Level 5 Conclusions References Study on Different Calculation Methods of Direct Carbon Emissions from Oil-Immersed Equipment on Substations 1 Introduction 2 Study of Direct Carbon Emissions from Oil-Immersed Equipment Based on Oil Chromatography Analysis 3 Study of Direct Carbon Emissions from Oil-Immersed Equipment Based on Field Measurements 3.1 Field Measurement Methods 3.2 Computational Models and Methods 3.3 Calculation Results and Analysis 4 Conclusions References A Data-Driven Algorithm for Short Circuit Fault Diagnosis of Power Batteries 1 Introduction 2 Fault Diagnosis Process for Electric Vehicles 2.1 Sparse Data Observer Algorithm 2.2 Threshold Setting 3 Results and Discussion 4 Compared with Other Fault Diagnosis Methods 5 Conclusion References Design and Optimization of PMSM for Compressed Air Energy Storage Based on Mop Model 1 Introduction 2 Electromagnetic Model of PMSM for Compressed Air Energy Storage 3 Optimization of PMSM for Compressed Air Energy Storage 3.1 Torque Ripple Analysis 3.2 Design Variables and Optimization Objectives 3.3 Design of Experiment Technology 3.4 Sensitivity Analysis and MOP Model Establishment 3.5 Particle Swarm Algorithm 4 Optimization and Simulation Results Analysis 5 Conclusion References Comprehensive Design of Electrical Machines for Integrated Pulsed Discharge Systems 1 Introduction 2 Specification Match Criteria 2.1 Pulsed Alternator Specification Parameters 2.2 Specification Match Design of Prime Motor and Pulsed Alternator 3 Electromagnetic Design of Pulsed Alternator and Prime Motor 3.1 Selection of Integrated Structure Topology 3.2 Main Dimension Design of Electrical Machines 4 Simulation Analysis of Integrated Pulsed Discharge System 4.1 Specification Parameters and Design Schemes 4.2 Steady-State Characteristics of Prime Motor 4.3 Discharge Characteristics of Pulsed Alternator 4.4 Driving Characteristics of Motor After Discharge 5 Conclusions References A Novel Accuracy Improvement Method for Cable Defect Location Based on Wave Velocity Correction Algorithm 1 Introduction 2 Theoretical Background 2.1 The Method to Extract Wave Velocity Based on Impedance Spectroscopy 2.2 Theory of the Wave Velocity Correction Algorithm 3 Simulation and Experimental Verification 3.1 Simulation Results and Analysis 3.2 Experimental Results and Analysis 4 Conclusion References Resistance Imbalance Fault Diagnosis in Rotor Wingdings of DIFG Considering Current Closed-Loop Effect 1 Introduction 2 Model of DFIG with RWRI 3 Influence of Current Loop 4 RWRI Diagnosis 5 Conclusion References Design and Development of Ice Monitoring and Early Warning System for Distribution Power Lines 1 Introduction 2 System Design 2.1 Overview of Monitoring and Early Warning System 2.2 Design of the System Architecture 3 Neural Network Model 3.1 Neural Network 3.2 Levenberg-Marquardt Neural Network Training Algorithm 4 Case Study 5 Conclusions References Research on Acoustic-Vibration Joint Detection Fault Diagnosis of Abnormal Transformer 1 Introduction 2 Abnormal Situation in the Field and Design of Detection Scheme 2.1 Abnormal Situation in the Field 2.2 Detection Principle 2.3 Detection Scheme 3 Test Results 3.1 Vibration Data Analysis 3.2 Noise Data Analysis 4 Conclusion References Study on Electric Field Distribution of Buffer Layer Within HVDC Cables Considering the Piezoresistive Effect 1 Introduction 2 Experimental Setup 3 Results and Discussion 3.1 Compression Deformation Characteristics of Buffer Layer 3.2 Piezoresistive Effect of Buffer Layer 3.3 Electric Field Simulation of Buffer Layer 4 Conclusion References Super-Resolution Reconstruction of CT Images Based on Generative Adversarial Networks 1 Introduction 2 The Principle of Generative Adversarial Networks 2.1 The Design Principles of the Generator 2.2 The Design Principles of the Discriminator 3 The Design of Generative Adversarial Networks SRGAN 3.1 The Design of SRGAN 3.2 The Design of the Loss Function 3.3 Experimental Design and Results 4 The Improvement of SRGAN 4.1 Algorithm Structure 4.2 Algorithm Training Result 5 Conclusion References Design and Simulation Analysis of Motor Operating Mechanism of 252kV Double-Break Vacuum Circuit Breaker 1 Introduction 2 Overall Design Method of Motor Operating Mechanism 3 Basic Structure of Motor Operating Mechanism 3.1 Transmission System Structure 3.2 Analysis of Opening and Closing Holding Angle 3.3 Load Torque Reduction 4 Simulation Analysis 4.1 Simulation Modeling of Operating Mechanism 4.2 Joint Simulation Method 4.3 Analysis of Dynamic Simulation Results 5 Conclusions References A Novel Simplified State-of-Energy Estimation Method for Lithium Battery Pack Based on the “Representative Cell” Selection by the State Machine 1 Introduction 2 Definition of SOE 2.1 Definition of Cell SOE 2.2 Definition of Battery Pack SOE 3 Battery Modelling 4 Battery Pack SOE Estimation Method 4.1 State Machine-Based Selection of Representative Monomers 4.2 Online Identification of Model Parameters 4.3 Extended Kalman Filter Algorithm 4.4 Adaptive Weighting Strategies 5 Analysis of Results 5.1 Error Analysis of SOE Estimation for Representative Monomers 5.2 Battery Pack SOE Estimation Results 6 Conclusion References Bearing Fault Detection Method in Gravity Energy Storage System Based on Improved VMD Fusion-Optimized CNN 1 Introduction 2 Theoretical 2.1 VMD 2.2 SSA 2.3 SSA-VMD 2.4 CNN 3 Experimental Results and Analysis 3.1 Experimental Procedure 3.2 Experimental Data Processing 4 Conclusion References A Review of Transmission Line Defect Detection Based on Deep Learning Object Detection Techniques 1 Introduction 2 Common Types of Defects on Transmission Lines 2.1 Insulator Defects 2.2 Pressure Equalizing Ring Defects 2.3 Anti-vibration Hammer Defects 3 Current Status of Transmission Line Defect Detection Research 3.1 Traditional Transmission Line Inspection Techniques 3.2 Transmission Line Inspection with Machine Vision 3.3 Deep Learning for Transmission Line Inspection 4 A Two-Stage Transmission Line Defect Detection Algorithm 4.1 Transmission Line Defect Detection by Faster-RCNN 5 A One-Stage Transmission Line Defect Detection Algorithm 5.1 Transmission Line Defect Detection for SSD 5.2 Transmission Line Defect Detection with YOLOv3 5.3 Transmission Line Defect Detection with YOLOv4 5.4 Transmission Line Defect Detection with YOLOv5 5.5 Transmission Line Defect Detection by YOLOX 5.6 Comparison of Fault Detection Results for One Stage 6 Improvement of Transmission Line Detection Algorithms in Different Cases 7 Reach a Verdict References Research on Key Technologies for AC Power Phase Error Measurement Based on Staggered Time Sampling Method 1 Introduction 2 Broadband AC Power Measurement System 3 Interleaved Sampling Method 3.1 Interleaved Sampling Technique 3.2 The Switching Strategy for Time-Out Sampling 3.3 Rules for Handling Data Sampled at Error Times 4 Testing Results 5 Conclusion References Real-Time Dispatching of Distribution Network Based on Improved ACO and Its FPGA Implementation 1 Introduction 2 Distribution Network Real-Time Dispatching Model 2.1 Objective Function 2.2 Constraint Condition 3 Improved ACO 3.1 Two-Stage ACO 3.2 Pheromone Diffusion Updating 4 Analysis of Examples 4.1 Example Setting 4.2 Analysis of Calculation Results 5 Conclusion References Model Predictive Control Strategy Based on Linear Regression for Wave Energy Converter 1 Introduction 2 Wave Energy Converter Model 3 Model Predictive Control 3.1 Prediction Model 3.2 Extended Space State Model 3.3 Linear Regression 3.4 Implementation Methods 3.5 Optimization Formulation 4 Simulation Results 5 Conclusion References Statistical Analysis of DC Leakage Current Data of Arrester in Guangzhou Power Grid 1 Introduction 2 Data Analysis 2.1 Distribution Function 2.2 Overall Data Distribution 3 Influence Factor 3.1 Voltage Level 3.2 Operating Years 3.3 Different Position 3.4 Different Humidity 4 Conclusion and Suggestion 4.1 Conclusion 4.2 Suggestion References Cabinet Design and Simulation of Dual-Power Oil Supply Pump Station 1 Introduction 2 Structure Design of Oil Supply Pump Station 2.1 Loading Cabin 2.2 Oil Pumping System 2.3 Piping System 3 Design of Cabin Control System of Oil Supply Pumping Station 4 Hydraulic Design of the Square Cabin of the Fuel Supply Pumping Station 5 Finite Element Analysis 5.1 Stress Analysis of the Square Cabin of the Fuel Supply Pumping Station 5.2 Noise Analysis of the Square Cabin of the Fuel Supply Pumping Station 5.3 Illuminance Analysis of Square Cabin of Fuel Supply Pumping Station 6 Conclusions References Fuzzy Energy Management Strategy for Battery Electric Vehicles Considering Driving Style Recognition 1 Introduction 2 Method for Driver Style Recognition 2.1 Method for Driving Condition Recognition 2.2 Determine the Coefficient for Identifying Driving Style 2.3 Driver Style Recognition Algorithm 3 Energy Optimization Allocation Strategies for Different Driving Styles 3.1 Fuzzy Control Strategy 3.2 Energy Optimization Allocation Strategy Under Different Driving Styles 4 Simulation Results and Analysis 5 Conclusion References Research on Optimal Design of Bidirectional Converter Based on Multiplexing of DAB and CLLC 1 Introduction 2 Operation Principle Description 3 Theoretical Analysis 3.1 Voltage Gain 3.2 Soft Switching Analysis and Parameter Design 4 Experimental Results 5 Conclusion References Research on Coupling Simulation Method of Temperature Field and Stress Field in Double-Layer Thin-Walled Corrugated Tube 1 Introduction 2 Finite Element Model 2.1 Finite Element Model of Corrugated Tube 2.2 Material Properties 2.3 Failure Criterion for the Corrugated Tube 2.4 Multi-Physics Coupling 3 Simulation of Flow Field and Temperature Field 4 Simulation of Temperature Field and Stress Field 4.1 Tensile Condition 4.2 Bending Condition 5 Conclusion References A Maximum Power Point Tracking Strategy for Wave Energy Converter Based on CNN-LSTM Prediction 1 Introduction 2 Point Absorption WEC Device Modeling 2.1 WEC Device Equivalence Model 3 Proposed Control Flow and Prediction Model 3.1 The MPPT Control Flow 3.2 CNN-LSTM Prediction Model 4 Simulation Result 5 Conclusions References Analysis of a Current Imbalance Accident in 220 kV Parallel Lines 1 Introduction 2 Brief Introduction of the Accident 2.1 Operation Mode Before and After the Accident 2.2 Accident Development 3 On-Site Inspection 3.1 Inspection of Substation 1 3.2 Inspection of Substation 2 4 Accident Cause Analysis 5 Simulation Verification and Analysis 6 Conclusion References The Design of Hose Working Cabin Based on 3D Printing 1 Research Status at Home and Abroad 2 Overall Design of the Square Cabin 2.1 The Composition of the Square Cabin 2.2 Structural Design of the Square Cabin 3 Tube Retractor Design 3.1 Folding Principle and Structural Design of the Tube Take-Up Device 3.2 Tube Retractor Control Principle 4 Feature Implementation 4.1 Laying Function 4.2 Unload Function 5 Force Analysis 5.1 Tensile Force (Friction) Required for the First-Order Tube Take-Up Device 5.2 Tensile Force (Friction) Required for Second-Order Tube Take-Up 5.3 The Pressure and Distribution Required for the Pressure Rod of the Tube Take-Up Device 6 Modeling Analysis 7 Performance Characteristics and Innovation 8 Conclusions References Multi-source Cooperative Scheduling Strategy for Electric Vehicles Integrated into Microgrid Under TOU 1 Introduction 2 Multi-source Collaborative Scheduling Strategy 3 Multi-source Collaborative Optimization 3.1 Scheduling Optimization Model 3.2 Optimization Solving Based on Sparrow Algorithm 4 Example Analysis 4.1 Demand Load under Different Strategies 4.2 Charging and Discharging Behaviors of EVs under Different Strategies 4.3 The Working Conditions of the Battery Under Different Strategies 4.4 Operating Costs Under Different Strategies 5 Conclusion References Research on the Diagnosis Method of Unseen New Faults and Composite Faults of High Voltage Circuit Breaker via Zero-Shot Learning 1 Introduction 2 The Proposed Zero-Shot Learning Network 2.1 Vector Representation of Fault Description 2.2 Attention Residual Convolutional Neural Network 2.3 Attribute Learning Network 3 High Voltage Circuit Breaker Experiment 4 Results and Analysis 4.1 Experiment Settings 4.2 Results and Analysis 5 Conclusion References Design of the Reference Signal Generation Module in Standard Power Source 1 Introduction 2 Scheme Design of Reference Signal Generation Module 3 Hardware Design of Reference Signal Generation Module 3.1 Control Kernel and Ethernet 3.2 DAC Selection 3.3 Design of Low-Pass Filter 4 Program Design of Reference Signal Generation Module 5 Conclusion References Development of a 100 kA-Level Heterogeneous Homogeneous Repetitive Frequency Pulse Power Supply 1 Introduction 2 Pulse Power Module Solutions 2.1 Circuit Structure and Electrical Parameters 2.2 Thermal Management 3 Pulse Power Control Strategy 4 Repetitive Frequency Discharge Test 5 Conclusion References Adversarial Defense Based on Mimic Defense and Reinforcement Learning for Power Vision Task in Smart Grid 1 Introduction 2 Power Vision Security System 2.1 Heterogeneous Variants 2.2 Evaluation Module 2.3 Mimic Scheduler 2.4 Arbiter 2.5 Negative Feedback Module 2.6 Credit Module 2.7 Cleaning Module 3 Experiments 4 Conclusion References Analysis and Comparison of Different Rotor Torque of Arbitrary Multiphase Motor 1 Introduction 2 The Concept of Arbitrary Multiphase Motor 2.1 Rotating Magnetic Field Generated by Stator of Arbitrary Multiphase Motor 2.2 Calculation of Inductance and Flux Linkage 2.3 Torque Calculation of Arbitrary Multi-phase Motor with Squirrel Cage Rotor 2.4 Arbitrary Multiphase Permanent Magnet Motor 3 Finite Element Simulation Analysis of Arbitrary Multiphase Motors 3.1 Flux and Magnetic Field Lines 3.2 Air Gap Magnetic Density 3.3 Back EMF 3.4 Torque Characteristic 4 Conclusion References Development for 3D Visualization Application System of Transmission Line Crossing Construction Under Micro-meteorology 1 Introduction 2 Fundamental of the Corona Onset Field 3 System Development and Design 3.1 System Development 3.2 Software Design 3.3 Hardware Measurement Device Design 4 Operational Test 5 Conclusion References Matlab Modeling and Simulation of Doubly-Fed Machine in Two-Phase Synchronous Rotating Frame 1 Introduction 2 Mathematical Modeling of Doubly-Fed Motor in dq Coordinate System 2.1 Matrix Equation 2.2 State Equation 3 Simulation Experiment 3.1 Establishment of the Simulation Model 4 Conclusion References Design and Implementation of Collaborative Autonomous System for Transformer Microgrids 1 Introduction 2 Regional Microgrid Model 3 Overall Architecture Design 3.1 Main Station Monitoring Layer 3.2 Edge Microgrid Autonomous Layer 4 Low Voltage Distributed Photovoltaic Output Regulation Method for Residents’ Affordability 5 Effectiveness Evaluation 6 Conclusion References Statistic Distribution Law of the Chromatographic Data of 110 kV Running Current Transformer 1 Introduction 2 Data Analysis 2.1 Data Collation 2.2 Distribution Function 3 Analysis Result 3.1 Overall Data Analysis 3.2 Different Manufacturers 3.3 Different Models 4 Conclusion References Design of Electrical Control System for 4500KN TDS 1 Introduction 2 Structural Design 3 Electrical Design 4 Intelligent Control 4.1 Multi-mode Auto-drilling 4.2 Soft Torque Control 5 Conclusion References Research Review of Distributed Photovoltaic Management and Control Based on Artificial Intelligence Technology 1 Introduction 2 Analysis of Factors Affecting Distributed PV Management and Control 2.1 Characteristics of Distributed Photovoltaic Power Generation 2.2 Policy Driven Distributed PV 2.3 Distributed Photovoltaic Technology Costs 2.4 Distributed PV Business Model 2.5 Grid Carrying Capacity 3 Application of Artificial Intelligence in Distributed Photovoltaic Management and Control 3.1 An Artificial Intelligence Approach to Distributed Photovoltaic Access Planning 3.2 Artificial Intelligence Method for Distributed Photovoltaic Output Prediction 3.3 Distributed Photovoltaic Collaborative Control Artificial Intelligence Method 4 Conclusion References An Analysis on the Structural Constraint Influence on Heat Transfer of Spindle Bearings 1 Introduction 2 Statistical Analysis on the Structure Parameters of Bearings 2.1 Bearing Structure and Installation Notes 2.2 Statistic Analysis Related to the Radial Heat Transfer 2.3 Statistic Analysis Related to the Axial Heat Transfer 3 Heat Transfer Capacity Contrast Between Radial and Axial Direction of Bearing 3.1 One-dimensional Conduction for Rings 3.2 Contact Heat Transfer 3.3 Construction on Heat Transfer Capacity Evaluation Function 3.4 Contrast Between Radial and Axial Heat Transfer Capacity 4 Conclusions References Electric Field Simulation and Optimization of a Conical Current Transformer 1 Introduction 2 Simulation Modeling 2.1 Physical Model 2.2 3-D Modeling 3 Analysis of Electric Field Simulations 4 Improvement and Optimization Program 5 Conclusion References Extraction-Free Absorption Spectrometric Analysis of Dis-Solved Furfural in Transformer Oils 1 Introduction 2 Direct Chromogenic Reaction of Furfural in Transformer Oil 2.1 Optical Path Simulation Analysis and Structural Design of the Light-guiding Structure 2.2 Establishment of the Furfural Sensing Equation 3 Smartphone based Absorption Spectrometry 4 Experimental and Results 5 Conclusion References A Layered Scheduling Strategy for Wind Power Cluster Considering Entropy Variable Weight Evaluation 1 Introduction 2 Control Strategy 2.1 Grouping and Sorting Strategy 2.2 Algorithm Flow 3 Indicators and Evaluation Methods 3.1 Evaluating Indicator 3.2 Entropy Method and Variable Weight Theory 4 Result Analysis 4.1 Overall Scheduling Analysis 4.2 Comprehensive Evaluation 5 Conclusion References Stochastic Assessment of Voltage Sag in Unbalanced Distribution System with Distributed Generators 1 Introduction 2 The Impact of Distributed Generation on Voltage Sag Assessment in Unbalanced Distribution System 2.1 Traditional Voltage Sag Assessment Method Based on Monte Carlo Method 2.2 Specific Analysis of the Influence of IIDG on Voltage Sag Assessment 3 Proposed Voltage Sag Assessment Method 3.1 Unbalanced Distribution System Models 3.2 Short Circuit Calculation Method 3.3 Voltage Sag Assessment Based on Iterative Short-Circuit Calculation Method 4 Case Study 5 Conclusions References Research on Transformer Fault Diagnosis Method Based on NRS-PSO-ANFIS 1 Introduction 2 Optimal Attribute Selection Based on Neighborhood Rough Set 2.1 Neighborhood Rough Set 2.2 Selection and Pre-processing of Faulty Samples 2.3 Neighborhood Rough Set Based Attribute Simplification 3 PSO-ANFIS Based Fault Diagnosis Modeling 4 Results and Discussions 5 Conclusion References Statistical Analysis of 220kV Operating Transformer Chromatographic Test Data 1 Introduction 2 Analysis Method 3 Result Analysis 3.1 Global Analysis 3.2 Influence of Operating Years 4 Conclusion References An IGBT Driving Circuit Based on Current Source and Resistance Segmental Control 1 Introduction 2 IGBT Switching Process Analysis 3 Principle Analysis of AGD Circuits 3.1 Analysis of CGD IGBT Circuits 3.2 Analysis of IGBT Circuit Driven by Active Gate 4 Simulation Analysis 5 Conclusions References Study the Effect of the Polymerization Degree of Molecule on Influencing Mechanical Property of Epoxy Resin by Molecular Simulation 1 Abstruct 2 Molecular Model and Simulation Methods 2.1 Molecular Model 2.2 Crosslinked Structure 2.3 Simulation 3 Result and Discussion 3.1 Crosslinked Density 3.2 Free Volume Fraction 3.3 Glass Transition Temperature 3.4 Mechanical Properties 3.5 Discussion 4 Conclusion References Research of AC and DC Discharge Characteristics of Rod-Rod Air Gap Under Low Temperature 1 Introduction 2 Test Setup and Methods 2.1 Test Specimen Parameters and Test Environment 2.2 Test Equipment and Layout 2.3 Test Methods 3 Test Results 3.1 AC Discharge Test 3.2 DC Discharge Test 4 Conclusion References Research on the Mechanism of Intermittent Failure of Electrical Connectors in Marine Environments 1 Introduction 2 Analysis of Surface Micromorphology of Fault Parts 3 Test Object and Test Method 3.1 Test Object 3.2 Test Method 4 Results and Discussion 4.1 Analysis of Connector Surface Topography 4.2 Connector Contact Resistance Monitoring Results 4.3 Analysis of Intermittent Fault Generation Mechanism 4.4 Analysis of Mechanism of Insertion and Removal Stress 4.5 Analysis of Salt Spray Corrosion Mechanism 4.6 Analysis of Mechanism of Vibration Stress 4.7 Discussion 5 Conclusion References Analysis of Wind Turbine Operation Behavior Based on Clustering Algorithm 1 Introduction 2 SDWPF Data Preprocessing 2.1 Wind Power Data Feature Correlation Analysis 2.2 Wind Power Data Cleaning 3 Analysis of Wind Turbine Operational Behavior 3.1 Evaluation Metrics 3.2 Wind Turbine Operating Behavior Analysis 3.3 Establishment of Finite Element Model 4 Wind Turbine Data Anomaly Detection 5 Conclusions References Research on Wind Power Peak Prediction Method 1 Introduction 2 Data Preprocessing 2.1 Data Source and Quality Analysis 2.2 Data Anomaly Handling 2.3 Other Cleaning 3 Wind Turbine Clustering Prediction 3.1 Experimental Design 3.2 Clustering Based on K-shape 3.3 Selection of Cluster Number and Clustering Results 4 Wind Power Prediction Based on Transformer 4.1 Experiments and Results Analysis 4.2 Experiments and Results Analysis 4.3 Peak and Valley Detection of Wind Power Output 5 Conclusions References Study on Temperature Characteristics of DC Pantograph Arc 1 Introduction 2 Experimental Plan and Experimental Materials 2.1 Experimental Setup 2.2 Experimental Materials 3 Arc Temperature Measurement Method 3.1 Denoising and Edge Detection of Arc Images 3.2 The Average Brightness Value of the Arc Image 3.3 Principle of Tri-Colorimetric Temperature Measurement 4 The Temperature Characteristics of Pantograph Arc 4.1 The Temperature Evolution Process of a Single Arc 4.2 Study on Factors Affecting Pantograph Arc Temperature 5 Conclusions References Effect of Low Temperatures on Partial Discharges in C4F7N/CO2 Gas Mixtures 1 Introductory 2 Test Methods 3 Test Results 3.1 PDIV 3.2 Maximum Discharge Capacity 3.3 Maximum Number of Discharges 4 Analysis and Discussion 4.1 Effect of Temperature on Partial Discharges of Mixed Gases 4.2 Effect of Mixing Ratio and Air Pressure on Partial Discharges of Gas Mixtures 4.3 Polarity Effects in Mixed Gas Partial Discharges 5 Conclusion References Research on Infrared Image Segmentation of Substation Arrester Based on DeepLabv3+ 1 Introduction 2 Graying and Enhancement of Infrared Images 2.1 Graying of Images 2.2 Histogram Equalization of Infrared Images 3 Infrared Image Segmentation of Arrester Based on Pixel Features 3.1 Image Segmentation Algorithm Based on Threshold 3.2 Image Segmentation Algorithm Based on Region Growth 4 Semantic Segmentation of Arrester Images Based on DeepLabv3+ 4.1 Semantic Segmentation Network Based on DeepLabv3+ 4.2 Semantic Segmentation of Infrared Images of Arrester 5 Conclude References Study on Circulation and Ground Potential Characteristics of GIL Grounding System 1 Introduction 2 GIL Models 2.1 GIL Grounding System Model 2.2 Computational Model of GIL Shell Circulation 2.3 Model Parameters of Equivalent Calculation 3 Simulation Models 3.1 Simulatio