Characterization of Measured Voltage Dips in Wind Farms in the Light of the New Grid Codes

Abstract

Voltage dips are a major concern for some transmission system operators. With increasing wind farm penetration in power systems, many national grid codes are imposing requirements for uninterrupted generation throughout power system disturbances.The aim of this paper is to present the results of measured voltage dips using two power quality analyzers installed for months in a Spanish wind farm. From the measured voltage waveforms, voltage dips are characterized by extracting dip type and characteristics.

Characterization and Visualization of Voltage Dips in Wind Power Installations

“…These analyzers, with a 10.25-kHz sample rate per channel, are able to capture detailed voltage and current waveforms during the voltage dip and the clearance of the fault, together with powerful trigger options to obtain the entire transient. In [29], a detailed installation scheme of both PQ analyzers is provided. One of them is located at the wind turbine nacelle-Gamesa G90 2.0 MW-between the doubly-fed induction generator (DFIG) and the 0.69/20-kV power transformer.…”

Estimation of voltage dips at the terminals of double fed induction generators

“…In this way, the explained solution can be extended to more PQ analyzers, located in other DFIGs or in different points of the power system. Further information and a detailed installation scheme of both PQ analyzers can be found in [9].…”

Análisis y regulación de fluctuaciones de potencia en parques eólicos

“…Estas mediciones se han llevado a cabo utilizando un registrador de calidad eléctrica Fluke 1760. Para más información se puede consultar Gomez-Lazaro et al (2007). Todos los tipos de PD indicadas en la tabla A.1 han sido testeadas bajo diferentes condiciones de perturbaciones equilibradas y desequilibradas comparando la evolución de la estimación de la frecuencia de red instantánea con lo obtenido con el método convencional DPLL trifásico.…”