2

Gas-Insulated Substations

Phil Bolin

Mitsubishi Electric Power Products, Inc.

2.1    Sulfur Hexafluoride

2.2    Construction and Service Life

Circuit Breaker • Current Transformers • Voltage Transformers • Disconnect Switches • Ground Switches •  Interconnecting Bus • Air Connection • Power Cable Connections • Direct Transformer Connections • Surge Arrester • Control System • Gas Monitor System •  Gas Compartments and Zones • Electrical and Physical Arrangement • Grounding • Testing • Installation •  Operation and Interlocks • Maintenance

2.3    Economics of GIS

References

A gas-insulated substation (GIS) uses a superior dielectric gas, sulfur hexafluoride (SF6), at a moderate pressure for phase-to-phase and phase-to-ground insulation. The ...

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