Abstract
Integrated energy system (IES) has advantages in improving the comprehensive utilization efficiency of energy, promoting the consumption of renewable energy and solving the problems of energy shortage and environmental pollution. An optimal planning method of IES considering photovoltaic (PV) integration is proposed in this paper. Firstly, considering PV units, the typical structure of IES containing electricity, gas, heat and cold energy is constructed, and the energy conversion and storage equipment are modeled; Then, aiming at the lowest total cost in the planning period, considering the constraints such as power balance, equipment working characteristics and upper limit of investment and construction, an optimal planning model of IES is established; Finally, an example is given to verify the effectiveness of the proposed method, and the effects of PV integration and natural gas price on the planning results are analyzed.
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