Title Synchronous Frequency Support of Photovoltaic Power Plants with Inertia Emulation
Authors Verdugo, Cristian, Tarraso, Andres, Candela, Jose, I, Rocabert, Joan, RODRÍGUEZ CORTÉS, PEDRO, RODRÍGUEZ CORTÉS, PEDRO
External publication No
Means Ieee Energy Conversion Congress And Exposition
Scope Article
Nature Científica
Area International
Publication date 01/01/2019
ISI 000520543704104
Abstract Grid stability is one of the main concerns in renewable energies. The lack of inertia and their low capability to provide frequency support has created the need for implementing new control strategies to solve this problem. In current networks, frequency and voltage support are performed through synchronous generators, which provide an inherent grid support due to the inertia presented in their mechanical rotors. Based on the same concept, renewable energies based on power converters have introduced synchronous controllers to emulate the dynamic behavior of synchronous generators and provide voltage and frequency support. However, most synchronous control strategies integrate their controllers as an add-on firmware embedded in each power converter, without presenting a coordinated synchronous performance when several converters operate in a PV power plant. The aggregation of several power converters operating with a coordinated synchronous response would be advantageous in these cases, since they can provide a harmonic response with an automatic power distribution when grid support is required. This paper presents a synchronous control strategy for photovoltaic power plants, which manages several power converters as an aggregated synchronous system.
Keywords Grid frequency support; Photovoltaic Power Plants; Synchronous Power control
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