Variable Time-Step Implementation for Rapid Quasi-Static Time-Series (QSTS) Simulations of Distributed PV

Conference · Thu Nov 29 04:00:00 EST 2018

DOI:https://doi.org/10.1109/PVSC.2018.8547744· OSTI ID:1507976

Reno, Matthew J. ^[1]; Azzolini, Joseph A. ^[1]; Mather, Barry A ^[2]

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1. Sandia National Laboratories
2. National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Distribution system analysis with high penetrations of distributed PV require quasi-static time-series (QSTS) analysis to model the variability introduced on the distribution system, but current QSTS algorithms are prohibitively burdensome and computationally intensive. This paper proposes a variable timestep algorithm to calculate the critical time periods when QSTS simulations should be solved at higher or lower time-resolution and to backtrack for any critical periods that were missed. This variable time-step solver is a new method of performing timeseries simulations with high accuracy while performing the simulation more than 50 times faster. The scalability of the algorithm is demonstrated using a real utility distribution system model with thousands of buses.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1507976
• Report Number(s): NREL/CP-5D00-73731
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
24 POWER TRANSMISSION AND DISTRIBUTION
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heuristic algorithms
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load flow
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regulators
voltage control