The document discusses the construction and layout of a control room for a substation. It describes building the foundation with spread footings or drilled piers below frost depth according to local codes. It also describes constructing the control room structure, and laying out the control and relay protection panels, DC and AC equipment, cableways, lighting, HVAC, and communications equipment within the control room. The control room provides an enclosed space for housing supplemental equipment needed to monitor and control the substation.

1. Control room and equipment layout
1
SAYYADURAI

2. Control house construction:
1.Foundation
2.Floor
3.Control house structure
1.Control house layout:
1.Control and relay protection panels
2.DC equipment
3.AC equipment
4.Cableways
5.Cable entrance
6.Lighting
7.Control house HVAC systems
8.Control house plumbing
9.Communications
2
SAYYADURAI

3. Control house construction
Nowadays, the control house is one of the main parts in every
modern HV switchyard and substation.
 Substations have grown in complexity and equipment such as
circuit breakers, switch disconnectors, CT, VTs and others must be
controlled, monitored and protected from some common point in the
field.
Foundation
The control house foundation consists of a spread footing with
either masonry blocks or cast-in place walls.
The footing is designed for an allowable bearing capacity based on
soil data. If soil data is not available, a maximum bearing of 48 k Pa
can be used.
The footings are installed below frost depth and in accordance with
local building codes and practices.
Drilled piers are an alternative to spread footings. Drilled piers are
especially applicable for pre-engineered metal buildings with
structural supporting bases that can rest directly on the piers without
requiring a concrete floor slab. Soil data is necessary for determining
the required depth, diameter, and reinforcing of the piers.
3
SAYYADURAI

4. Damp-proofing of foundation walls is desirable, especially if concrete
block is used. If a basement level is constructed, damp-proofing should be
provided.
Footing drains are usually provided when a basement level is
constructed.
All foundation walls should be insulated with a 5.1-cm (2-inch) thickness
of rigid insulation for energy conservation.
It is preferable to install the insulation on the inside of the walls, although
the outside is acceptable.
Nowadays, the control house is one of the main parts in every modern HV
switchyard and substation.
Simply, because substations have grown in complexity and equipment
such as circuit breakers, switch dis connectors, CT, VTs and others must
be controlled, monitored and protected from some common point
(CONTROL FOOM) in the field.
Necessity for supplemental equipment such as protection relays, controls,
batteries, communications equipment, and LV distribution equipment also
increases.
All that equipment must be placed somewhere in the field.
 For small distribution substations, this equipment can usually be
contained in weatherproof enclosures or control cabinets.
 For larger substations, separate equipment housing is necessary.
4
SAYYADURAI

5. A control house provides a weatherproof and, if required,
environmentally controlled enclosure for supplemental substation
equipment.
Additional space can be provided for workshops, equipment testing
and repair, storage areas, and lavatory facilities.
MV and LV switchgear can also be contained within control houses,
or this equipment may be contained within weatherproof
enclosures dedicated to that purpose.
5
SAYYADURAI

6. 6
SAYYADURAI

7. CONTROL & RELAY PANELS
7
SAYYADURAI

8. SAYYADURAI
8
RELAY PANELS

9. 9
SAYYADURAI

10. 10
SAYYADURAI

11. 11
SAYYADURAI

12. 12
SAYYADURAI

13. 13
SAYYADURAI

14. 14
SAYYADURAI

15. RELAY PANELS
15
SAYYADURAI

16. 16
SAYYADURAI

17. 17
SAYYADURAI