GB/T 24835-2018Regulation of operation and maintenance for 1100kV gas-insulated metal-enclosed switchgear (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB /Z 24835-2009 "1000kV gas insulated metal-enclosed switchgear operation and maintenance procedures", and The main changes compared with GB /Z 24835-2009 are as follows.

--- Removed "terms and definitions" (see Chapter 3 of the 2009 edition);

--- Removed the "auxiliary system (air compressor system for pneumatic mechanisms)" (see 7.4.6 of the 2009 edition);

--- Removed the general flow chart of GIS decomposition and maintenance (see 7.7 of 2009 edition);

--- Removed the "Decomposition Check" (see 7.8 of the 2009 edition);

--- Removed the precautions for the use of gas recovery units (see 7.9 of the 2009 edition);

--- Removed the precautions for storage of gas cylinders (see 7.10 of the 2009 edition);

--- Remove the precautions for the use of adsorbents (see 7.11 of the 2009 edition);

--- Deleted the organization notes after disassembly and repair (see 7.12 of 2009 edition);

--- Removed the "Selection and Test of Grease and Sealant" (see 7.13 in 2009);

--- Removed the "Technical Requirements for Sealing and Disassembling" (see 7.14 in 2009);

--- Removed "spare parts and special tools" (see Chapter 9 of the 2009 edition);

--- Removed the "positioning and detection methods for discharge faults" (see Appendix A of the 2009 edition);

--- Revised the basis for the disassembly and repair of the circuit breaker (see 6.1.1, 4.4.4.1 of the 2009 edition);

---Modified the dismantling and maintenance project of the circuit breaker in GIS, and deleted the "pneumatic operating mechanism" (see 6.2.1.2, 7.4.1.2 of 2009 edition);

--- Revise the technical requirements for physical examination and repair, and incorporate the "test" (see the 8th edition of 2009) into the "experiment after disassembly and repair" (see 6.7).

1 Scope

This standard specifies the project, content and technology of 1100kV gas insulated metal-enclosed switchgear (hereinafter referred to as GIS) operation and maintenance. Claim.

This standard applies to rated voltage 1100kV AC GIS (including HGIS).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 5832.1 Determination of trace moisture - Part 1. Electrolysis

GB/T 5832.2 Determination of trace moisture - Part 2. Dew point method

GB/T 11023 High-voltage switchgear sulphur hexafluoride gas seal test guide

GB/T 12022 industrial sulfur hexafluoride

GB/T 24846-2018 1000kV AC electrical equipment preventive test procedures

Guide for on-site withstand voltage and insulation test of DL/T 555 gas-insulated metal-enclosed switchgear

3 Safety requirements for operation and maintenance