Performance Loan
In the electrical energy industry, the performance credit is that part of the nominal output of a specific power plant which, statistically secured , can contribute to covering the base load in a given interconnected network and thus replace another power plant. It indicates the contribution of an individual power plant to the secured performance in the network.
General
In addition to properties of the planned unavailability such as B. Revisions are taken into account when calculating the performance credit, including unplanned failures due to incidents. Properties of the power plant such as the type of power plant or unit size are also included. The fluctuating feed-in of supply-dependent electricity generation such as wind and solar energy is also taken into account. For fossil and nuclear power plants the performance credit is around 90%, for wind energy it is only 6% according to the German Energy Agency . Photovoltaic systems bring little or no performance credit. For different types of power plants, the statements of the performance credit are only to be understood as approximate, general guidelines.
The following table provides rough guide values for the performance credit for various types of power plants:
| Power plant type | Performance Loan |
|---|---|
| pumped storage power plant | 99.9% |
| coal-fired power station | 90% |
| Combined gas and steam power plant (CCGT) | 85% |
| Wind turbine | 6% |
| Photovoltaic system | 0% |
Examples
A fossil power plant with an installed capacity of 500 MW in one block can statistically cover 450 MW of the continuous load of the electricity network with this power plant block. A very large wind park with 100 wind turbines with 5 MW each, i.e. also a total of 500 MW installed capacity, can, however, statistically secure 30 MW of the permanent load.
See also
literature
- Consortium DEWI / E.ON Netz / EWI / RWE Transportnetz Strom / VE Transmission (Ed.): Energy planning for the grid integration of wind energy in Germany on land and offshore by 2020 . Concept for a step-by-step development of the power grid in Germany for the connection and integration of onshore and offshore wind turbines, taking into account generation and power plant developments as well as the required control power. Cologne February 24, 2005, 12 Capacity requirements for (seasonal) maximum load coverage, p. 238–250 ( dena.de [PDF; 6.6 MB ; accessed on July 27, 2012] Study on behalf of the Deutsche Energie-Agentur GmbH (dena)).
- Consentec / R2B Energy Consulting (Ed.): Requirements for an optimal integration of renewable energies in the power supply system . Study on behalf of the Federal Ministry of Economics and Technology (BMWi). Aachen / Cologne June 30, 2010, 4.3 Secured performance of conventional power plants and performance credits for renewable energies, p. 59–67 ( bmwi.de [PDF; 5.6 MB ; accessed on July 27, 2012]).
Individual evidence
- ↑ dena.de ( Memento of the original from January 5, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Assured power plant performance. Retrieved September 16, 2017 .
