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Title:
 
New P/Q Control Functions of Grid-Connected PV Inverters: Do They Have an Impact on the Anti-Islanding Detection Behaviour in European Grids?
 
Author(s):
 
G. Lauss, P. Preining, R. Bründlinger, B. Bletterie, M. Nagelmüller, R. Pieler, Z. Miletic
 
Keywords:
 
PV Inverter, Anti-Islanding, Smart Grids, Network Integration, High penetration of PV, PQ Control
 
Topic:
 
OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Subtopic: Balance of System Components
Event: 31st European Photovoltaic Solar Energy Conference and Exhibition
Session: 5BO.9.4
 
Pages:
 
1645 - 1651
ISBN: 3-936338-39-6
Paper DOI: 10.4229/EUPVSEC20152015-5BO.9.4
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


Methods of anti-islanding detection of grid connected inverters are increasingly in the focus of distributed generation (DG) research. While various principles have been developed over the last decades to avoid an unintentional islanding operation of generation units in the grid, nowadays the challenge of novel requirements sets up a number of questions related to its behaviour in field operation. In particular this is represented by the introduction of active and reactive power controls (PQ control) that is already manifested in numerous standards as a mandatory requirement for grid connected operation. This important control feature is a crucial point within the discussion of modern smart grids and opens up many important prospects for upcoming concepts of distribution grids. However, the introduction of PQ control imposes another loop control that is superordinate to the primary current control as well as to all fundamental safety detection controls. This fact raises sceptical questions whether the implemented routines against unintentional islanding operations can be interfered or even inhibited. This contribution gives statements based on theoretical evaluations and reproducible laboratory test results in addition. Different control schemes and various control parameter configurations of the PQ control (hysteresis, bandwidth, response time, etc.) have been tested for its resulting behaviour of the islanding detection and its consequent disconnection times as well as the non-detection zone (NDZ).