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Distribution Automation Handbook
Introduction
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| Distribution Automation Handbook |
A primary distribution substation is the connection point of a distribution system to a transmission or a sub-transmission network. Outgoing feeders from a primary distribution substation are typically feeding secondary distribution substations and bigger, most often industrial type, consumers directly. What is considered to be the voltage level for a primary distribution substation varies country by country and depends on the whole electricity network structure and extent and historical and organizational issues. To give some kind of a picture of the voltage levels, below is an example about the system level allocation in a certain country.
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Table Of Contents
3 ELEMENTS OF POWER DISTRIBUTION SYSTEMS
3.14 Primary Distribution Substations
3.14.1 Switchgear Type and Busbar Arrangement
3.14.2 Insulation Level Coordination
3.15 Primary Equipment
3.15.1 Distribution Overhead Lines
3.15.2 Distribution Power Cables
3.15.3 Distribution Power Transformers
3.15.4 Primary Medium-Voltage Switchgear
3.15.5 System Earthing and Compensation Equipment
3.15.6 Shunt Capacitors and Static Var Compensators
3.15.7 Medium-Voltage Switching Equipment
3.15.8 Induction Machines
3.15.9 Synchronous Machines
3.15.10 Distributed Energy Converters
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3.16 Instrument Transformers and Sensors
3.16.1 Magnetic Current Transformers
3.16.2 Magnetic Voltage Transformers
3.16.3 Capacitive Voltage Transformers
3.16.4 Sensors
3.17 Secondary Distribution Substations
3.17.1 Ring Main Units
3.17.2 Secondary Medium-Voltage Switchgear
3.17.3 Outdoor Switch Disconnectors
3.17.4 Reclosers
3.17.5 Secondary Distribution Transformers
3.17.6 Low-Voltage Switchgear
3.17.7 Compact Secondary Substation
3.17.8 Indoor Secondary Substation
3.17.9 Pole-Mounted Secondary Substation
3.17.10 Sectionalizers
3.18 Auxiliary Power Supply Systems
3.18.1 DC Auxiliary Supplies
3.18.2 AC Auxiliary Supplies
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Distribution Automation Handbook
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