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Agility in energy Ahead of the challenge, ahead of the change

European Utility Week | Vienna, November 3-5, 2015

Go-ahead application for existing distribution grids combines availability and efficiency

© Siemens AG 2015

2015-09-30 Page 2 Bruno Opitsch / EM DG SDA

Distribution Automation

Scope of Application

Distribution automation

HV

MV

NOP

UHV transmission

UHV

HV

LV

MV

Generation and

transmission (HV)

Distribution (MV) • Distribution substation

Distribution and feeder

automation • Transformer station

• Pole top-mounted

Dual characteristics:

• Generation

• Consumption

Distribution (LV) Dual characteristics:

• Generation

• Consumption

© Siemens AG 2015

2015-09-30 Page 3 Bruno Opitsch / EM DG SDA

Existing Grids Configuration

How a rural area can look like

3

0 1 km

Normal Open Point

20-kV- Underground Cable

20-kV-Overhead Line

Secondary Substations

Industrial Supply

Feeder A

Feeder B

Feeder C

Primary Substations

Sourc

e: G

oogle

maps 1

5.1

0.2

015

© Siemens AG 2015

2015-09-30 Page 4 Bruno Opitsch / EM DG SDA

Intelligence replaces copper – Niederstetten, Deutschland

One application for multiple purpose

Customer environment: • Two electrical circuits with 84 distribution substations (19 customer stations)

separated by two normal open points

• Up to 18 km-long segments with a large share of overhead lines (45% cable grid)

• High renewable generation and industrial load in different MV-Feeder

Use cases: • Automated switching for isolation and service restoration

• Optimization of Volt/ VAR Condition

Implementation: • Control: 1x regional controller

• Automation: 9 intelligent distribution substations equipped with Remote Terminal Unit, Feeder Condition Monitoring, Power Quality Devices 2 Line voltage regulators (MV),

Features: Regional controller includes

• Self-healing for outage management

• Fault detection

• Fault isolation and Service Restoration

• Area voltage control

• Voltage measurement

• Control of line voltage regulator

© Siemens AG 2015

2015-09-30 Page 5 Bruno Opitsch / EM DG SDA

Operational efficiency

Optimization of Volt/Var conditions

Impact on high-voltage

Voltage band violation due to

decentralized power generation,

e.g. renewable energy

Voltage band violation due to distributed.

Infeed into low-voltage or medium-voltage

grid, e.g. energy.

Impact on medium-voltage

Overload of cable

Impact on low-voltage

Voltage band violation and overload of grid components

due to distributed infeed, e.g. renewable energy

Power quality problem caused by inverters

Distribution transformer overload

© Siemens AG 2015

2015-09-30 Page 6 Bruno Opitsch / EM DG SDA

Operational efficiency

Optimization of Volt/VAR conditions

Line length

with storage control with Volt/VAR control (generators, capacitor banks) with load control smart control – combination of control devices with transformer tap control

Voltage

VN

Vmax

Vmin

Consumers and distributed generation without control

Semi-distributed

Regional

controller A, V, VA

Var, W

Q

P, Q P, Q

© Siemens AG 2015

2015-09-30 Page 7 Bruno Opitsch / EM DG SDA

Fault and outage management –

Automated switching for isolation and service restoration

Less than

1 minute

15” 10” 5” 2” Time zero

Regional controller

Fault location Fault isolation Service restoration

IEC 60870-5-101

IEC 60870-5-104

Semi-distributed

© Siemens AG 2015

2015-09-30 Page 8 Bruno Opitsch / EM DG SDA

Fault and outage management –

Islanding to improve grid availability

Customer environment: • Long segments with a large share of overhead lines

• Feeders ending at the end of long, steep valleys

• High renewable generation and industrial load

Use cases: • Automated switching for isolation and service restoration

• Islanding and continue operation as Micro Grid

Implementation: • Control: 1x regional controller

• Automation: intelligent distribution substations; In-feed boxes at renewable connection Direct access to load and/or generation

Features: Micro grid controller includes

• Load Control including load shedding

• Distributed generator control also for renewables

• Local control panel (Human Machine Interface)

• Storage control

• Network synchronisation

© Siemens AG 2015

2015-09-30 Page 9 Bruno Opitsch / EM DG SDA

Application for existing distribution grids combines availability and efficiency

\ Conclusion

• High integration of DES

• No upgrade of existing grid

• Cost reduction on invest

• Increased availability

• Restoration within seconds

• Cost reduction per incident

• High customer satisfaction

• Intelligence replaces copper

Enables further use:

• Real-Time Data Analysis

• Generation / Load balancing

• Demand Response

• Strategic Grid Planning

Volt /VAR control Outage Management Digital Grid + =

© Siemens AG 2015

2015-09-30 Page 10 Bruno Opitsch / EM DG SDA

Bruno Opitsch

Senior Key Expert Distribution Automation

Siemens AG

Germany

Energy Management Digital Grid

Secondary Distribution Automation

Humboldtstrasse 59

90459 Nürnberg

Mobile: +49 (172) 23 59 328

E-mail: bruno.opitsch@siemens.com

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