diploma Outdoor disconnector

Diploma Disconnector for outdoor installation of horizontal-rotary type 330 kV, 2000 A with polymer insulation
In this paper, a design is proposed, constructive solutions for an outdoor disconnector of a horizontal-rotary type with polymer insulation for a voltage of 330 kV and a rated current of 2000 A are described.
Introduction 3
Chapter 1. Analysis of the design of 330 kV disconnectors according to the literature review 6
1.1 Disconnector horizontal-pivot type 8
1.2 Disconnector, vertical-swing type 10
1.3 Half-pantograph disconnector 10
1.4 Basic requirements for disconnectors 12
1.4 Polymer insulation 13
1.5 Conclusion 15
1.6 Statement of the problem. Initial data 16
Chapter 2. Electrical calculation of disconnector 17
2.1 Calculation of the screen-to-ground air gap under the influence of a switching impulse without taking into account the influence of the footrest 17
2.2 Calculation of the screen-to-ground air gap under the influence of a switching impulse taking into account the influence of the footrest 18
2.3 Calculation of the air gap of the screen-kicker when exposed to a lightning impulse 19
2.4 Shield system of RPG-330 disconnector. Calculation of the shields of the support insulator 20
Chapter 3. Mechanical loads acting on the supporting insulation of the apparatus structure 23
3.1 Determination of the forces perceived by the support insulator from the actuator 24
3.2 Determination of wind load 24
3.3 Determination of the tension of the lead wires 26
3.4 Determination of the maximum design load 26
3.5 Checking the mechanical strength of the structure 27
Chapter 4. Optimization of the ribbing parameters of the support insulator 28
Chapter 5. Thermal calculation 33
5.1 Initial data for the thermal design of the disconnector 33
5.2. Thermal design with long-term operating current 35
5.3 Thermal design with the flow of through currents short circuit 38
5.4 Analysis of calculated data 39
Conclusion 40
References 41
Appendix 43