A multi-objective optimal scheduling model for wind-power and photovoltaic integrated power systems considering demand response is set up.Such two kinds of demand response projects as real-time price and interruptible load are integrated into this model.The reserve capacity cost coefficient and the carbon emission price are introduced.The financial penalties are imposed for wind power curtailment in accordance with the real price.The objective function with the sum of economic and environmental costs as minimum is set up.The purchasing policies of renewable energy

supply scheme of reserve capacity and the effects of two kinds of demand response projects are compared and the sensitivity of model parameters is analyzed.The calculation analysis results show that the scheme of full purchase of photovoltaic and allowing appropriate wind power curtailment makes the dispatch more flexible

and the demand response reduces the influence of wind power fluctuations on the system

optimizes the unit commitment and improves the economic and environmental benefits of the system.