Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags
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hdl:2117/16760
Document typeConference report
Defense date2012
Rights accessRestricted access - publisher's policy
Abstract
Unbalanced voltage sags strongly deteriorate the
performance of power converters and electrical machines
connected to the distribution network. In particular, a reduction
of the power quality is noticed in these equipments, which is
caused by a ripple in the output power and an increase of the
current harmonic distortion. Several solutions based on reactive
power compensation have been introduced to cope with this
problem. Among them, static synchronous compensators have
confirmed the superior performance due to the possibility of
using all rated power exclusively to voltage support. This paper
presents a simple reactive power control algorithm for static
synchronous compensators operating under unbalanced voltage
sags. The main feature of the proposed algorithm is that it allows
a fine adjustment of the amount of reactive power injected by the
positive- and negative-sequence components. Thus the control
algorithm provides voltage support at the output of the static
synchronous compensator. Specifically the proposed control
conveniently corrects both the positive- and negative-sequence
voltage. Selected simulation results are provided to validate the
proposal.
CitationCastilla, M. [et al.]. Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags. A: IEEE International Symposium on Industrial Electronics. "ISIE 2012: proceedings of the IEEE International Symposium on Industrial Electronics". Hangzhou: 2012, p. 987-992.
ISBN978-146730158-9
Publisher versionhttp://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06237223
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