Intern Inertia Estimator

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  • Opleidingsniveau: Universiteit (WO)
  • Dienstverband: Vast
  • Werkweek: 40 uur

Wat doe je als Intern Inertia Estimator bij TenneT?

Who are you?

Are you a master student Electrical Power Engineering or mathematics, physics or alike? Would you like to develop a calculation tool to determine the system inertia from year-round market simulations? Read more about the challenge that awaits you!

The assignment

Develop a
calculation tool to determine the system inertia from year-round market
simulations. Using the tool and current planning scenarios, study development
of the level of inertia for the Dutch transmission system.


a.   TenneT performs so-called market simulations
to determine planning cases as input for the grid calculations of the bi‑annual
Investment Plan Study. The market simulations define for each hour in a certain
year what type of generation (coal, gas, wind, PV, etc.) is running to meet the
demand of the system. Scenarios are made for multiple years and for different
starting points (e.g. fuel prices, government policies, etc.)

b.   The grid planning department GDS maps these
zonal scenarios to the individual power generation modules in the network model
i.e. creates nodal scenarios (called planning cases). Because the TSO cannot
know how the market parties allocate the power to the power generation modules
in their portfolio, the zonal-to-nodal translation creates an uncertainty. GDS
handles this by considering multiple allocation scenarios e.g. equally spread
across the country, or all in a certain region, etc.

c.   The system inertia depends on the set of
power generation modules that is connected to the system and in operation.
Synchronous power generation modules contribute based on their power rating and
the inertia of their rotating machines. Power park modules (e.g. wind power
plants and PV plants) do not contribute as the power-electronic converter has
no inertia.

d.   The stability of the transmission network
depends on the system inertia. The higher the inertia is, the more stable the
system will be. This explains why the increase in renewable generation with
power park modules is a challenge for the stability of the transmission system.

e.   To predict how the inertia of the system will
develop in the future, one could calculate the inertia from the nodal planning
scenarios. To find the minimum and maximum inertia value one has to find the
combination of power plants that results in these inertia values. The use of a
Knappsack routine has been suggested.

f.    TenneT has already developed a test script in
Python. This script however, does not include the optimisation, is not user
friendly and is not linked to the market simulations of the Investment Plan

Research question
Describe the relationship
between the portfolio of power generation modules and system inertia.
Develop a method for
zonal-to-nodal translations based on inertia levels.
Develop a script to
calculate the minimum and maximum inertia for given planning scenarios.
shall be possible to take the input data from the market simulations of the
Investment Plan.
an optimisation like Knappsack or equivalent.
How will the inertia develop
for the TenneT system given the latest planning scenarios?


Wat verwachten we van jou?

Who are you?

Master student Electrical Power Engineering is preferred (mathematics, physics or alike could also be possible). The student is expected to have a basic understanding of the principle of inertia, should be experienced in Python programming, and have good analytical capabilities. Next to that, the student is eager to learn, can work independently and is capable of obtaining the required information from colleagues and other sources.

Wat kun je verwachten?

You will be given a responsible internship assignment within this technically very interesting working environment, partly because of the complex high-voltage issues TenneT has to deal with. In addition, you will receive a nice internship allowance and you can expect excellent supervision.

Waar kom je te werken?

TenneT is Europe’s first cross-border grid operator for electricity. With approximately 21,000 kilometres of (extra) high-voltage lines and 41 million end-users in the Netherlands and Germany, we rank among the top five grid operators in Europe. Our focus is to develop a North-West European energy market, to integrate renewable energy, and to optimize our safety performance. Safety is a core value of TenneT. We set high standards, for our employees as well as our contractors. Taking power further.

· The department of Grid Development and Strategy is
responsible for the grid planning of TenneT in the Netherlands. This includes
taking care of a continuous insight in all grid related risks and constraints
related to all developments that impact the capacity of the future grid. The
department is also responsible for policies and measures related to system
integrity, including the compliance verification of all new solar PV and wind

Contact over deze vacature

Wil je meer informatie?

Neem contact op met:
Loes Evers,
Coördinator Studenten en Evenementen
+31 (88) 936 7467