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ConclusionExamined voltage variation in sample MV distribution system for two case studies: with and without considering load variability and variable solar PV generation.Determined maximum allowable penetration limit (P injection) for variable solar PV generation using voltage sensitivity based analytical technique.Voltage sensitivity based methods are more efficient than the repetitive power flow techniques.ObjectivesAssessed the impact of variable active power injection (P), by solar PV generation on voltage profile of a MV distribution system.Modelled solar radiation and load demand based on solar geometry and daily load pattern respectively.Determined maximum allowable active power injection by solar PV generation. Proposed voltage sensitivity based analytical method and tested on 33 bus MV distribution system.

Variation due to day cycleMaximum allowable P injection at each bus

Test Network-33 bus distribution systemIMPACT OF VARIABLE SOLAR PV GENERATION ON MV DISTRIBUTION SYSTEMSYasmin Nigar, Dr. Ashish. P. Agalgaonkar, Dr. Phil CiufoAustralian Power Quality and Reliability Centre, School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, Australia

Scenario 1- Generation Variability: Variable P injection and constant load demandVoltage variation of P injection at each busMaximum allowable P injection by solar PV generationScenario 2 - Load Variability: Variable P injection and variable load demand Hourly voltage variations of each bus when PV (with P injection) is integrated at bus 33 Hourly voltage variations of each bus when PV (with P injection) is integrated at bus 5

Load demand and generation profileSimulation Results