Journal
ENERGIES
Volume 15, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/en15124329
Keywords
integrated energy system; multi-time period; optimal dispatch model; renewable energy generation; accommodation capability; fluctuation
Categories
Funding
- Science and Technology Project from the State Grid Zhejiang Electric Power Company Ltd. [5211JY200001]
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This paper presents an optimal operation model for an integrated energy system, including green certificate trading and carbon emission right trading to promote the accommodation of renewable energy generation (REG). To address the uncertainty in REG, a multi-time period optimal dispatching scheme is proposed. Simulation results demonstrate the effectiveness of this method in enhancing the accommodation capability for REG.
With the target of carbon peaking and carbon neutrality, renewable energy generation (REG) develops rapidly. The increasing penetration of REG brings along the problems of fluctuation in power flow and the possible abandonment of wind and photovoltaics (PV) generation. In this context, the so-called integrated energy system (IES) becomes a promising solution to the accommodation of REG thanks to energy storage systems and coupling devices inside. In this paper, the optimal operation model of an IES is first presented, with the schemes of green certificate trading and carbon emission right trading included to provide economic incentives for accommodating REG. Next, in order to address the problem of uncertainty in REG, the devices in the IES are divided into three types based on regulation flexibility, and a multi-time period optimal dispatching scheme is proposed, including day-ahead optimal scheduling, rolling optimal dispatching, and real-time control strategy. Finally, it is demonstrated by simulation results of a numerical example that the proposed method not only promotes the accommodation capability for REG but can also cope well with contingencies.
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