Power Substations HV/MV/LV Guides

Power Substations HV/MV/LV Guides

Electricity generation

An electrical substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers. Electric power may flow through several substations between generating plant and consumer, and may be changed in voltage in several steps.

A substation that has a step-up transformer increases the voltage while decreasing the current, while a step-down transformer decreases the voltage while increasing the current for domestic and commercial distribution. The word substation comes from the days before the distribution system became a grid.

The first substations were connected to only one power station where the generator was housed, and were subsidiaries of that power station.


Equipment in substation

Substations generally have switching, protection and control equipment and one or more transformers. In a large substation, circuit breakers are used to interrupt any short-circuits or overload currents that may occur on the network. Smaller distribution stations may use recloser circuit breakers or fuses for protection of distribution circuits. Substations do not usually have generators, although a power plant may have a substation nearby.

Other devices such as power factor correction capacitors and voltage regulators may also be located at a substation.

Substations may be on the surface in fenced enclosures, underground, or located in special-purpose buildings.

High-rise buildings may have several indoor substations. Indoor substations are usually found in urban areas to reduce the noise from the transformers, for reasons of appearance, or to protect switchgear from extreme climate or pollution conditions.

Where a substation has a metallic fence, it must be properly grounded (UK: earthed) to protect people from high voltages that may occur during a fault in the network. Earth faults at a substation can cause a ground potential rise. Currents flowing in the Earth’s surface during a fault can cause metal objects to have a significantly different voltage than the ground under a person’s feet; this touch potential presents a hazard of electrocution.

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Guides

No.DescriptionDownload
1Answering Substation Automation Questions Through Fault Tree Analysis
2Applying an Ethernet LAN in a Substation
3Power Plant Accoustic
4Power Transformer Maintenance And Acceptance Testing
5Selecting Energy Efficient Distribution Transformers
6MV-LV transformer substations – theory and examples of short-circuit calculation
7Electric Power Substations Engineering
8Implementation of IEC61850 in a Substation Environment New
9Design Guide for Rural Substations New
10Power plant acoustics
11Guide To Forms Of Separation In Low-Voltage SwitchGear and ControlGear
12Guide To Forms Of Separation In LV SwitchGear and ControlGear – UPDATED! New
13Factory Acceptance Test (FAT) procedure
14Best Practice Manual For Transformers
15Schneider Electric – Low Voltage Switchboard Inspection Guide star
16Difference Between Switchgear and Switchboard star
17Protection of Electrical Networks star
18Technical Guideline For Interconnection Of Generators To The Distribution System
19Power transformer – testing procedures
20Electric Power Applications, Engine and Generator Sizing
21Megger – Fault Finding Solutions star
22Electric Distribution Load Characteristics
23Power Plant Practices to Ensure Cable Operability star
23Substation Design Application Guide star
24XLPE Underground Cable Systems star
25Guidlines for substation service inspection & condition monitoring star
26Using of Latched Contactors to Switch Transformers
27INSTRUCTIONS – Installation, Operation, and Maintenance of Medium Power Substation Transformers
28Uninterruptible Power Supply (UPS) Types
29High Voltage Techniques Course star
30Real-time Monitoring and assessment of CB operations for diagnostics and control applications
31Capacitor Application Issues New star
32Medium Voltage Switching Devices Selection for application and purpose
33Preventive maintenance and reliability of LV overcurrent protective devices New
34ABB – SF6 or Vacuum MV Circuit Breaker? star
35Why Is Arc Detection Important? star
36DC Transmission and Distribution star
36Underground Power Transmission Lines New star
37Test Guide for Cast Resin Dry Type Transformer – TRIHAL star
38Low Voltage Switchgear and Controlgear – Technical Document (Allen-Bradley)
39Transformer Differential Protection Scheme With Internal Faults Detection Algorithm
40Grounding Systems
41Insulator Pollution In Transmission Lines
42Transformers Basics, Maintenance and Diagnostics
43Guidelines For Earthing In Maritime Installations – Norwegian Electrical Safety Directorate
44Fixed or withdrawable MV switchgear? star
45Power System Earthing Guide star
46Ground Fault Protection Technical Guide star
47Introduction to IEC 61439 – A new standard on Switchgear and Controlgear Assemblies
48Commissioning of HT Electrical System star
49Electrical design of the on-site generation system star
50Safety operations on medium voltage switchgear star
51Mitigate The Magnetic Field Exposure Near Transformer Substation
52General Technical Specification For 220kV SF6 Gas Insulated Metal Enclosed Switchgear (GIS) New
53Measuring Earth Resistance star
54National Electrical Code design considerations as applied to Utility Substations
55A Practical Guide To Earth Resistance Testing New star
56Load Shedding For Utility and Industrial Power System Reliability
57Energy Transmission and Distribution Guide
58Improving safety on ageing switchgear New
59Technical Considerations in the Specification and Design of LV Switchboards New star
60The 21st Century Substation Design New star
61Switchgear and Motor Control Centres in Oil, Gas and Petrochemical Industry
62Low voltage switchgear and controlgear application guide for electrical engineers
63Static Analysis of Power Systems New
64Practical guide to electrical measurements in LV switchboards – ABB
65Power System and Substation Automation Guide
66Reliability of Substation Configurations star
67Substation Design Guideliness star
68Power Transformer Maintenance and Field Testing star
69Selection of CTs and wire sizing in power substations star
70Copper for Busbars – Guidance for Design and Installation star
71Thermal design of MV/LV substations star
72Guidelines for Conducting an Energy Audit in Industrial Facilities star
73Transformer Protection Application Guide New star
74Instrument Transformers Application Guide New star

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Page edited by E.C. (Google).



22 Comments


  1. George
    Oct 23, 2014

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