Substation design is one of the major tasks in power network construction requiring a solution which balances operational performance against cost - taking into account land space, location and aesthetic considerations, etc. From a technical perspective, substations may be categorised in a variety of ways but generally fall under the following type of headings: 1. Distribution voltage metalclad 2. Air-insulated switchgear (AIS) 3. Gas-insulated switchgear (GIS).

Chapter Contents:

• 8.1 Substation design considerations
• 8.2 Busbar systems
• 8.2.1 Busbar systems — design considerations
• 8.2.1.1 Single busbar substation
• 8.2.1.2 Double busbar substation
• 8.2.1.3 Mesh substation
• 8.2.1.4 One-and-a-half circuit-breaker substation
• 8.2.1.5 Transformer feeder configurations
• 8.3 Merits of AIS vs GIS substations
• 8.3.1 AIS vs GIS considerations
• 8.4 AIS substation clearances
• 8.4.1 AIS substation — required clearances
• 8.4.1.1 Electrical clearances
• 8.4.1.2 Insulation height
• 8.4.1.3 Safety distance (clearance)
• 8.4.1.4 Design clearances
• 8.4.1.5 Boundary clearances
• 8.4.2 Bay centres and bay separation
• 8.4.3 Over-sailing conductors
• 8.5 Busbar design and forces
• 8.5.1 Busbars — overview
• 8.5.2 Busbar short-circuit forces
• 8.5.3 Busbar withstand forces
• 8.5.4 Busbar forces — design considerations
• 8.5.5 Busbar insulators
• 8.6 Design merits of indoor vs outdoor substations
• 8.6.1 Indoor vs outdoor
• 8.7 Substation design principles and specification
• 8.7.1 Substation design principles
• 8.7.2 Phasing diagram
• 8.7.3 Substation design specification

Inspec keywords: substations; design engineering; gas insulated switchgear; air insulation

Other keywords: GIS; location considerations; land space considerations; AIS; operational performance; power network construction; substation design; gas-insulated switchgear; aesthetic considerations; distribution voltage metalclad; air-insulated switchgear

Subjects: Substations; Switchgear