1.0.1 In order to implement national capital construction policy and technical economy policy in the design of ±800kV DC overhead transmission line (hereinafter referred to as ±800kV line), achieve safety and reliability, advance and applicability, economy and rationality, resource conservation and friendly environment, this code is formulated.
1.0.2 This code is applicable to the design of single ±800kV line.
1.0.3 The ±800kV line shall be designed according to actual conditions in combination with regional characteristics and by actively adopting mature new technology, material and process and promoting energy-saving, consumption-reducing and environment-friendly advanced technology and products.
1.0.4 The design of ±800kV line shall not only meet the requirements of this code, but also comply with those specified in the current relevant national standards.
1 General Provisions 2 Terms and Symbols 2.1 Terms 2.2 Symbols 3 Routing 4 Meteorological Conditions 5 Conductor and Ground Wire 6 Insulators and Fittings 7 Insulation Coordination, Lightning Protection and Grounding 8 Conductor Arrangement 9 Tower Type 10 Tower Load and Materials 10.1 Tower Load 10.2 Structural Materials 11 Tower Structures 11.1 Basic Calculation Requirements 11.2 Calculation Formulas for Ultimate Limit State and Serviceability Limit State 11.3 Basic Requirements for Tower and Pole Structures 12 Foundation 13 Ground Clearance and Crossing 14 Environmental Protection 15 Labor Safety and Industrial Sanitation 16 Ancillary Facilities Appendix A Calculation of the Maximum Potential Gradient on Conductor Surface Appendix B Calculation of Field Strength of Corona Radio Interference Appendix C Calculation of Corona Audible Noise Appendix D Telecommunication Line Grade Appendix E Highway Grade Explanation of Wording in This Code List of Quoted Standards
