Test Specification 13.01

Test Rationale

The aim of the test is to verify the cost benefits and sustainability of large scale existing hydrogen storages for supporting and providing services to power systems.

Specific Test System

The system uses in particular an existing empty storage for hydrogen such as an empty natural gas storage or salt mine.

Target measures

The test is successfully passed if the hydrogen storage can meaningfully support the power system balancing and via this remain profitable and sustainable.

Input and output parameters

• Point of common coupling measurements
• setpoints for control of the hydrogen storage
• Reaction time of storage
• Profit

Test Design

This test needs to run in non-real-time for several years or seasons depending on the reaction time.

Initial system state

• Networks operating on nominal power, temperature and pressure
• Storages are empty

Evolution of system state and test signals

• The storages are filled based on the overproduced renewable generation
• Based on price signals the storages react and balance the power system

Other parameters

Temporal resolution

Dynamic, variable step size (seconds?)

Source of uncertainty

Suspension criteria / Stopping criteria

• Critical violation of network operation constraints
• Networks becoming unstable

Mapping to Research Infrastructure