substations in special buildings and underground · page 6 2017 ground water cost impact of ground...

Substations in special

buildings and

underground

siemens.com/energy-management Unrestricted © Siemens AG 2017

1 Worldwide experience – selected projects

Unrestricted © Siemens AG 2017

2017 Page 3

~ 40 years experience

~ 25 projects completed

~ 250 bays in operation

~ 15 countries served

Siemens – global references of subterranean substations and

substations in special buildings

> 245 kV < 245 kV < 145 kV

2 Special requirements for substations in special buildings and underground

1. Soil + Ground Water

2. Fire Fighting

3. HVAC

4. Emissions

5. Access

6. Design Concept

Unrestricted © Siemens AG 2017

2017 Page 5

Soil and Ground Water

Ground water table

Soil pressure

Crucial for design and

cost

Unrestricted © Siemens AG 2017

2017 Page 6

Ground Water

Cost impact of ground water to

Single-story cellar building

Single-story underground substation

Two-story underground substation

Single-story cellar building

Single-story underground substation Two-story underground substation

air-intake

access

hall emergency

staircase

cable cellar

playground

air-intake

access

hall 110kV switchgear emergency

staircase

playground

air-intake

access

hall 110kV switchgear emergency

staircase

playground

hall

Unrestricted © Siemens AG 2017

2017 Page 7

Fire Protection Concept and Fire Fighting

Passive Fire Fighting

No flammable material

2 separated ventilation

systems for transformers

and building

Active Fire Fighting

Fire extinguish system

HSE Regulations

Emergency exit

No toxic materials (PVC)

Unrestricted © Siemens AG 2017

2017 Page 8

Heating Ventilation Air-Condition (HVAC)

Ventilation

Transformer separated from other

devices

More space needed

Humidity

Avoid humidity by minimizing air

exchange

Unrestricted © Siemens AG 2017

2017 Page 9

Emissions

Noise

Inconvenient sound of HVAC-

units and transformers

Electromagnetic

Too small vertical clearance to

public places or EDP

Unrestricted © Siemens AG 2017

2017 Page 10

Access

Heavy Equipment

If possible transformers on

ground floor

Aesthetic

Architectural design of visible

parts

Unrestricted © Siemens AG 2017

2017 Page 11

Design Concept

3 Possible Layouts

Underground S/S

Semi underground S/S

On–top building

Underground - hide as much as possible

Semi-underground - 2 levels On-top building - design necessary

Unrestricted © Siemens AG 2017

2017 Page 12

Do you have individual questions or want to schedule an

appointment for a personal consultation?

Siemens Energy Management

Customer Support Center:

Siemens AG

Freyeslebenstrasse 1

91058 Erlangen

Germany

Phone: +49 180 524 70 00

Fax: +49 180 524 24 71

E-mail:

support.energy@siemens.com

siemens.com