Epoxy-based Spacers for Gas Insulated Power Apparatus

1 Electric Field Distribution around Basin-type Spacer in DC-GIS 1.1 Introduction 1.2 Mathematical Model 1.3 Results and Discussion 1.4 Conclusion 2 Gas Convection Affecting Surface Charge and Electric Field Distribution around Tri-post Insulators in DC-GIL 2.1 Introduction 2.2 Simulation and Parameters 2.3 Results and Discussion 2.4 Conclusion 3 Polarity Reversal and Over Voltage Affecting Discharge Inception of Tri-post Insulator in DC-GIL 3.1 Introduction 3.2 Simulation and Parameters 3.3 Results and Discussion 3.4 Conclusion 4 Simulation on Surface Charge Accumulation of Epoxy Resin under Needle-Plane Corona Discharge in Air 4.1 Introduction 4.2 Simulation Model 4.3 Results and Discussion 4.4 Conclusion 5 Surface Charge Dynamic Behaviors of Epoxy Resin under Combined Effects of DC and Pulse Voltages 5.1 Introduction 5.2 Experimental Arrangement 5.3 Results and Discussion 5.4 Conclusion 6 Surface Charge Accumulation and Decay Behaviors of Epoxy Resin under Combined Effects of AC and Pulse Voltages 6.1 Introduction 6.2 Experimental Arrangement 6.3 Results and Discussion 6.4 Conclusion 7 Effects of Surface Charge on DC Flashover Characteristics of Epoxy/BN Nanocomposites 7.1 Introduction 7.2 Experimental Arrangement 7.3 Results and Discussion 7.4 Conclusion 8 Temperature Dependent Surface Charge and Discharge Behaviors of Epoxy/AIN Nanocomposites 8.1 Introduction 8.2 Experimental Arrangement 8.3 Results and Discussion 8.4 Conclusion 9 Surface Charging and Discharging Behaviors of Epoxy-Based Spacer in DC-GIL 9.1 Introduction 9.2 Experimental Arrangement 9.3 Surface Charge and Flashover Characteristics under DC stress 9.4 Conclusion Surface Functionally Graded Materials for GIL/GIS 10 Surface Functionally Graded Insulator for Electric Field Grading in AC Gas Insulated Power Apparatus 10.1 Introduction 10.2 Concept of SFGM 10.3 Fabrication of SFGM Insulator 10.4 Electric Field Simulation 10.5 Flashover Test Results 10.6 Conclusions 11 Epoxy-based Insulator with Permittivity-graded Surface Layer by Magnetron Sputtering for Gas-insulated Lines 11.1 Introduction 11.2 BaTiO3 Layer Deposition 11.3 Simulation and Optimization 11.4 SFGM Insulator Fabrication 11.5 Results and Discussion 11.6 Conclusions 12 Electric Field Relaxation by Surface Functionally Graded Spacer for Compact HVDC Gas Insulated Apparatus 12.1 Introduction 12.2 σ-SFGM for Electrical Field Relaxation 12.3 Fabrication of σ-SFGM Spacer 12.4 Flashover Voltage of σ-SFGM Spacer 12.5 Conclusions 13 Novel Insulator with Surface σ-FGM for DC compact Gas Insulated Pipeline 13.1 Introduction 13.2 Novel Insulator with Interfacial σ-FGM 13.3 Novel insulator with Interfacial σ-FGM 13.4 Electric Field Simulation 13.5 Improved Flashover Voltage 13.6 Con