Electricity Ancillary Services in Germany

16 Pages·2017·1.16 MB·English

by  Mischinger, Stefan

Mareike Wolke, 08.11.18, Berlin
ELECTRICITY ANCILLARY
SERVICES IN GERMANY
CURRENT STATUS AND DEVELOPMENT
AGENDA
German Energy Transition and Actual Challenges for Electricity Grids
Current Debates in Electricity Ancillary Services
Outlook on Future Developments
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GERMAN ENERGY TRANSITION AND
ACTUAL CHALLENGES FOR
ELECTRICITY GRIDS
German Energy Transition so far
Reduction of CO emissions Share in electricity consumption 2017
2
Nuclear Water
11% 3%
1990: 1.251 Mio. t
1400 11440000
PV
10%
1200 11220000 2000: 1.043 Mio. t 95% of
(= -16%) Volatile RES installed
capacity
36% Wind
connected to
1000 2017: 905 Mio11.00 00t00 22001177:: 990055 MMiioo.. tt 26% distribution
Conventional
grid
ä ää 50%
2 800 22 880000
O OO
C CC
t . t . t . 2017: 905 Mio. t (= -27%)
o 600 oo 660000
iM iMiM
400 440000 Until 2017 -27% CO2-emissions compared to 1990
36% share of RES in energy consumption 2017
200 220000
SAIDI (System Average Interruption Duration
0 00
Index): 15 min/a in 2017 (21 min/a in 2006)
1990 2000 2010 2020 119999002030 22000000 220011002040 22002200 220033002050 22004400 22005500
Historisch HHiissttoorriisscchh
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Actual Challenges for Electricity Grids
Grid operators use
congestion management
almost every day
Increased controllability
also in lower voltage
Increasing Decreasing Sudden levels needed
Generation shift
distances for operation hours changes in
to distribution
electricity for conv. power power flow Cost for network and
level
transport plants direction system security
1,1 billion € in 2015
Delayed grid expansions due to 0,9 billion € in 2016
fast RES development and acceptance problems
1,4 billion € in 2017
CO -free RES generation
2
Need for action regarding the development of a regulatory framework is reduced instead of
suitable for grid friendly flexibility usage using (cross sectoral)
flexibilities
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CURRENT DEBATES IN ELECTRICITY
ANCILLARY SERVICES
ELECTRICITY ANCILLARY SERVICES
Electricity Ancillary Services are services (or preliminary services) provided by all parties involved in order to maintain
the quality of the electricity supply.
Curtailment
Redispatch/ Congestion Intantaneous
Balancing power from
Management Reserve
power plants and
Operation Planning
storage facilities
Reserve Power Plants
Flexible loads
Data Exchange/ Monitoring/ System Frequency
Controlling/ Coordination
Control Control
System Voltage
blackstartcapability
Restoration Control
CompensationSystems
islandingcapability
Switching measures to Reactive power supply by
restrict the fault power plants and network
EAS
resources
Coordinationacross PrelimaryServices
networklevels forEAS
Frequency measures to
ensure stability
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REDISPATCH AND CONGESTION
MANAGEMENT
16 TWh: corresponds
to annual consumption
of 4.5 million households
1.600 600 18
k 1.4 billion€ s)
row ni y 1.400 1.1 billion€ hyad 500 15 hW)
tt 1.200 c( T
eN rofiruceSR1.000 0.9 billion€ tapsidsnoitn 400 12 ytitn(
stsoC lau metsyS dUE 468000000 eRevretnI 230000 69 ygraeunQ
nn 100 3 E
na 200
A
0 0 0
2013 2014 2015 2016 2017 2013 2014 2015 2016
Quelle: MonitoringberichtBNetzA
Need for Change: Measures to Increase Utilization of Existing Networks
Efficient integration of RES and CHP plants in Redispatch
The Redispatchpotential of conventional plants > 10 MW in the 110 kV grid is already being used by TSOs in
coordination with the DSO. The integration of RES and CHP plants from 100 kW in the Redispatch is planned
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CONTROLLING AND MONITORING
Need for Change: Measures to Increase
Controlling and Monitoring
Further development of the smart meter for
1.7 MILLION KM
better observability and improvement of overall
DISTRIBUTION NETWORK
concept with regard to the controllability of
flexibilities
Enhanced connectivity of SINTEG
research projects and other innovation
TSO
Standardized interfaces and coordination
processes to avoid conflicts between
DSO
market and system-related use of
decentralized power plants and flexible
CongestionManagement
loads
FrequencyControl
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REACTIVE POWER
What’s the discussion about?
Increasing reactive power demand leads to increased costs for providers, but not necessarily
for everyone and situation can change over time
Question whether it makes sense to oblige all power plants to provide reactive power via fixed
rules in the Technical Connection Rules (TCR)
Need for Change: Technically and Economically Efficient Provision of Reactive Power
Discussion about an economically efficient, non-discriminatory and transparent provision of
reactive power
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