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Mathematics > Optimization and Control

arXiv:1812.10809 (math)
[Submitted on 27 Dec 2018 (v1), last revised 2 May 2022 (this version, v2)]

Title:Deriving DERs VAR-Capability Curve at TSO-DSO Interface to Provide Grid Services

Authors:Ankit Singhal, Venkataramana Ajjarapu
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Abstract:The multitudes of inverter-based distributed energy resources (DERs) can be envisioned as distributed reactive power (var) devices (\textit{mini-SVCs}) that can offer var flexibility at TSO-DSO interface. To facilitate this vision, a systematic methodology is proposed to derive an aggregated var capability curve of a distribution system with DERs at the substation level, analogous to a conventional bulk generator. Since such capability curve will be contingent to the operating conditions and network constraints, an optimal power flow (OPF) based approach is proposed that takes inverter headroom flexibility, unbalanced nature of system and coupling with grid side voltage into account along with changing operating conditions. Further, the influence of several factors such as compliance to IEEE 1547 on the capability curve is thoroughly investigated on an IEEE 37 bus and 123 bus distribution test system along with unbalanced DER proliferation. Validation with nonlinear analysis is presented along with demonstration of a scenario with T-D co-simulation.
Comments: udner review in IEEE Transactions on Power Systems
Subjects: Optimization and Control (math.OC)
Cite as: arXiv:1812.10809 [math.OC]
  (or arXiv:1812.10809v2 [math.OC] for this version)
  https://doi.org/10.48550/arXiv.1812.10809
Journal reference: IEEE Transactions on Power Systems, 2022
Related DOI: https://doi.org/10.1109/TPWRS.2022.3200024

Submission history

From: Ankit Singhal [view email]
[v1] Thu, 27 Dec 2018 19:46:40 UTC (3,199 KB)
[v2] Mon, 2 May 2022 22:22:28 UTC (6,834 KB)
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