Effects of moving cloud shadows on electric utilities with dispersed solar photovoltaic generation
Residential utility-interactive solar photovoltaic (PV) generators were simulated throughout the southeast Tulsa, Oklahoma area. As cloud shadows pass over such PV systems, their generation varies with the incident solar radiation (insolation), and the electric utility must follow these changes with its own generators, similar to how it now follows continuous changes in electrical loads. A two-dimensional simulation of time-varying incident solar radiation was developed and used to study the effect of moving cloud shadows on the Public Service Company of Oklahoma (PSO) electric utility system, to which the PV generator were connected. The insolation simulation was first combined with a distribution feeder model to estimate possible changes in PV generation over several time periods. The insolation and feeder models were then used to provide data to the PSO power-flow simulation to estimate the effects on the PSO system. During the worst cumulus cloud pattern at peak-solar-radiation times, PSO will begin to see significant effects from the dispersed PV generation when PV installed penetration in southeast Tulsa reaches approximately 15% (when PV represents approximately 15% of the installed generation in southeast Tulsa.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA)
- OSTI ID:
- 5293111
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
DISPERSED STORAGE AND GENERATION
ELECTRIC UTILITIES
PHOTOVOLTAIC POWER PLANTS
INSOLATION
OKLAHOMA
CLIMATES
SOLAR RADIATION
SIMULATION
CLOUDS
FEDERAL REGION VI
NORTH AMERICA
POWER PLANTS
PUBLIC UTILITIES
RADIATIONS
SOLAR POWER PLANTS
STELLAR RADIATION
USA
140600* - Solar Energy- Photovoltaic Power Systems
296001 - Energy Planning & Policy- Electric Power Generation- (-1989)