Volt-PF Control Mode for Distribution Feeder Voltage Management Under High Penetration of Distributed Energy Resources
CoRR(2024)
摘要
Volt-VAr control is a popular method for mitigating overvoltage violations
caused by high penetration of distributed energy resources (DERs) in
distribution feeders. An inherent limitation of volt-VAr control is that the
reactive power (Q) absorbed/injected by the DER is determined based only on the
terminal voltage, without considering the active power (P) generated by the
DER. This leads to an inequitable burden of Q support, in the sense that those
DERs generating lower P, and hence contributing less to overvoltage issues, may
be required to provide more than their share of Q support. The resulting PF
of these DERs is required to vary over a wide range, which many current DERs do
not support. A new control scheme, namely volt-PF control, is proposed here
where the Q support is inherently a function of both the voltage and P from
DERs, which alleviates the above concerns while limiting the PF variation
within a narrow range of 0.9 to 1. The proposed scheme is validated through
extensive static and dynamic simulations on a real, large (8000+ nodes) feeder
with very high penetration (>200
in new and existing commercial hardware inverters is described.
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