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B03 Pumped storage plant Goldisthal - from planning to todays operation
1 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Pumped storage plant Goldisthal -
from planning to todays operation
Joachim Kahlert, Head of Technical Power Plant Management
Ulrich Geiger, Head of Operation Hydropower Plant
Vattenfall Europe Generation AG
VGB Conference Power Plants 2011
September 22th 2011 - Bern Confidentiality - None (C1)
Confidentiality - None (C1)
2 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Contents
1 Basic data of the pumped storage plant
2 Planning, approval, construction and commissioning
3 Dispatch strategies
4 Continuous operation, operational experience and efficiency
5 Summary
Confidentiality - None (C1)
3 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Contents
1 Basic data of the pumped storage plant
2 Planning, approval, construction and commissioning
3 Dispatch strategies
4 Continuous operation, operational experience and efficiency
5 Summary
Confidentiality - None (C1)
4 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Locations of Power Plants in Germany
The PSP Goldisthal is located
in the Free State of Thuringia,
approx. 70 km in the south of
the federal state capital Erfurt,
at the course of the river
Schwarza in the west of the
Thuringian Slate Mountains.
Pumped storage plant Goldisthal
Confidentiality - None (C1)
5 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Data of the water reservoirs
Upper reservoir
Lower reservoir
Dam height: 9 to 40 m
Wall length: 3,370 m
Altitude upper operation
reservoir: 874.0 m
Lower operation reservoir: 849.3 m
Usable water volume: 12.04 mill. m
Dam height: 67 m
Wall length: 220 m
Altitude upper operation
reservoir: 569.0 mill.
Altitude lower operation
reservoir: 549.0 mill.
Reservoir (incl. flood protection): 18.9 mill. m
Confidentiality - None (C1)
6 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Technical parameters
Installed capacity
1,060 MW with 4 pump turbines
265 MW, thereof:
- 2 pump storage units with
asynchronic-motor-generators
- 2 pump storage units with
synchronic-motor-generators
divided into two half plants.
1 run-of-river machine 670 kW
Construction time
from 1997 to 2004
Commisioning
from 2003 to 2004
View into the machine cavern house
Confidentiality - None (C1)
7 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Contents
1 Basic data of the pumped storage plant
2 Planning, approval, construction and commissioning
3 Dispatch strategies
4 Continuous operation, operational experience and efficiency
5 Summary
Confidentiality - None (C1)
8 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Start of first investigations
In 1965 started investigations for a 3,000 MW power plant with one upper reservoir on both
sides of the Schwarza and one shaft power plant in the middle of the lower reservoir.
Basis for planning was the further expansion of nuclear power in the then DDR and the
therefore necessary supply of intermediate load and peak load.
In a study about possible locations for pump storage plants was in many steps with
deepened previous planning Goldisthal chosen as the best location of many possibilities.
Shaft power house variant approx. 1975
Confidentiality - None (C1)
9 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Changes of design parameters during DDR
Due to the estimated project costs, which would have
been very high, the project was rejected by the decision-
making body.
As a basis for planning was stipulated later, that the
planning of a power plant should be done analog to the
pump storage plant Markersbach.
As a new principle for planning was also estimated a
power plant, which belongs to the 1,000 MW class.
By the use of existing plans the project should have
been cheaper (e. g. only adaptations of the height of fall
and other technical and constructional parameters).
At the beginning of the 1980s planning and preparatory
work were stopped and the initiated buildings were
secured. Construction work was ceased for the time.
Geological investigations were continued.
Underground investigations
Confidentiality - None (C1)
10 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Resumption of the project
1988 Resolution for resumption of the construction preparation
1990 Constitution of a new construction staff
Investigations about execution, efficiency and capability of permission
1997 Decisions about continuing construction by the board of VEAG
Start of boring the tunnel and resumption of the construction
2001 Finish lower reservoir
2002 Finish upper reservoir
Excavation work machine cavern
Construction outlet structure
Confidentiality - None (C1)
11 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Approval process
Since the planning had started before 1989, respectively unification treaty, a lot of regulatory
decisions were still valid. Despite this, the approval procedure took several years:
1992 Initiation of the regional planning procedure
Begin of negotiations about real estates
Working out of the environmental compatibility study
1993 Finish of the regional planning procedure with a positive judgment of the states
regional development planning
Initiation of the plan approval procedure
1994 Public display of the documents
1995 Start of the EU-wide tendering procedure
1996 Plan approval resolution
Action of the federal states
1997 Amicable arrangement and withdrawal of the action
2004 Surrender of the operation approval
2010 Finish of the last compensation measures concerning plan approval procedure
Confidentiality - None (C1)
12 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Pictures from the construction phase 1/2
Assembly work in the machine cavern
Boring machine cavern
Main dam lower reservoir
during the construction
phase
Confidentiality - None (C1)
13 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Pictures from the construction phase 2/2
Filled auxiliary dam lower reservoir
Turbine with guide vanes and impeller wheel Construction upper reservoir
View over upper and lower reservoir
Confidentiality - None (C1)
14 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Commissioning
2003 was the commissioning of both synchronous
machines.
2004 was the commissioning of both
asynchronous machines.
The IBS-Phase provided confirmation, that there
were different efficiency characteristic lines as well
as different performance in the use of synchronous
and asynchronous machines.
Therefore arose questions concerning a sensible
use of the machines:
- Which Types?
- In which combination?
- At what time?
There were investigations of
- the economic ranges of application and
- the technical ranges of application.
Assembly impeller wheel
Confidentiality - None (C1)
15 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Implementation of findings from the commissioning
Part load operation:
Turbine operation:
Technical a turbine operation is possible
from 0 to 100 %, the economic
optimization provided the following
operation range:
Synchronous machines
100 MW to 265 MW
Asynchronous machines
40 MW to 265 MW
Pump operation:
Synchronous machines in pump
operation are not controllable
Asynchronous machines
-190 MW to -290 MW, this corresponds
to -100 MW control power per machine P
Asynchronous
machine
Synchronous
machine
Since 2004 has been done a permanent
optimization of application of the machines
1 to 4 at the PSP Goldisthal
With optimization tools machines can be
operated at any time und in every
combination, each with the highest
efficiency.
Confidentiality - None (C1)
16 | Pumped storage plant Goldisthal | J. Kahlert, U. Geiger | 22.09.2011
Contents
1 Basic data of the pumped storage plant
2 Planning, approval, construction and commissioning
3 Dispatch strategies
4 Continuous operati
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