Optimal operation of cascade hydro-wind-photovoltaic complementary generation system with vibration avoidance strategy

• A vibration avoidance strategy considering the multiple factors is proposed. The influences difference of wind and solar energy on hydropower units are analyzed. planned output schemes cascade station presented. hydro-wind-photovoltaic complementary generation system considered to be an effective approach solve fluctuation renewable energy. However, for units, grid-connected operation results in frequent power adjustments increases risk operating zones, which may lead low efficiency hidden danger plant. This study proposes a based unit commitment while factors. Multi-objective optimization performed minimize water consumption, number times crossing zone involved regulation. Results case located Southwest China, indicate that proposed avoids (the rates decrease from 7.6%, 6.7%, 6.3% 0 under three initial levels). Comparing 9 scenarios with different meteorological conditions, indicates photovoltaic enables less complete peak load regulation cross frequently due PV daily profile fitting better curve, unlike power. Finally, periods suggested models beneficial reducing impact hybrid provide station.