Method for controlling a power plant

A method for controlling a power plant which delivers electrical power to an electrical grid. This grid have a grid frequency which fluctuates around a nominal frequency. The power output of said power plant is controlled as a function of a control frequency, in such a matter that the power output i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HEPNER, STEPHAN, WIHLER, ANDREW
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER COMBUSTION ENGINES CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GAS-TURBINE PLANTS GENERATION HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SYSTEMS FOR STORING ELECTRIC ENERGY WEAPONS
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Beschreibung
Zusammenfassung:	A method for controlling a power plant which delivers electrical power to an electrical grid. This grid have a grid frequency which fluctuates around a nominal frequency. The power output of said power plant is controlled as a function of a control frequency, in such a matter that the power output is increased when the control frequency decreases below said nominal frequency, and in the other hand the power output is decreased when the control frequency beyond said nominal frequency. The grid frequency is continuously measured. The measured grid frequency is averaged to give as a moving average a slowly varying averaged trend frequency which ist characteristc of the long term behavior of the grid frequency. The averaged grid frequency is used as said control frequency, if said measured grid frequency lies within a predetermined band, around said averaged grid frequency. The measured grid frequency is used as said control frequency, if said measured grid frequency lies outside said predetermined band.