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Influence on the discharge depth of energy storage power station

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6 FAQs about Solar Influence on the discharge depth of energy storage power station

How does power decline affect discharge time?

Influence of the power decline step on the discharge time. The electrical energy produced during a complete discharge process results in 31 MW h e l. Note that for the hypothesis of the investigation performed, the charge phase is not modelled.

How does temperature affect the discharge time at nameplate power?

As we can see, the total discharge time is strongly influenced by the reservoir design temperature: increasing T T E S, d e s i g n from 1100 K to 1300 K the total discharge time increases from 32.4 h to 48.6 h (+ 50 %). The storage temperature also determines the discharge time at nameplate power.

What determines the discharge time at nameplate power?

The storage temperature also determines the discharge time at nameplate power. Varying the TES temperatures from 1100 K to 1300 K, we observe an increase by 61% of the discharge time.

What is a pumped storage power station?

Pumped storage power stations are unique in combining both water pumping and electricity generation functions. They play a crucial role not only in facilitating the integration of clean energy but also as an indispensable part of building a modern, intelligent power system [, , ].

How much electrical energy is produced during a complete discharge process?

The electrical energy produced during a complete discharge process results in 31 MW h e l. Note that for the hypothesis of the investigation performed, the charge phase is not modelled. Therefore, the Round-Trip Efficiency (RTE) cannot be defined on the basis of the selected starting state of charge.

How does the discharge phase affect the turbine inlet temperature?

At the beginning of the discharge phase, the I-ESS deliverable power is set equal to the nameplate one. However, with the progress of the discharge, the temperature of the packed bed decreases and, consequently, the turbine inlet temperature decreases too.