Abstract
The integrated energy system (IES) plays a key role in energy conservation and emission reduction. In order to realize the low-carbon economic dispatch of the IES, current studies usually utilize the fixed and the ladder-type pricing mechanism-based carbon emission unit cost (CEUC) in the optimal dispatch model. However, those mechanisms fail to take carbon emissions levels of the system into account, and the relevant parameters, such as the interval length, are hard to set. In order to tackle this challenge, a CEUC model with a dynamic reward and penalty pricing mechanism (DRPPM) is constructed. And then an optimal dispatch model to minimize the comprehensive operation cost, including the carbon emission cost, the energy purchasing cost, and the equipment operation cost, is proposed. At last, an actual electricity–heat–cooling–gas IES is employed to analyze the impact of parameters of the CEUC model on the dispatch.
Highlights
The increasing energy demand leads to the massive utilization of fossil fuels
We constructed a low-carbon economic dispatch model of the integrated energy system (IES) considering the carbon emission unit cost (CEUC) based on the dynamic reward and penalty pricing mechanism (DRPPM)
Relevant conclusions from this article are as follows: First, compared with the fixed CEUC and the ladder-type CEUC, the CEUC based on the DRPPM proposed in this article has great significance in limiting the carbon emissions of the IES
Summary
The increasing energy demand leads to the massive utilization of fossil fuels. The trend poses huge pressure on the environment such as global warming (Wu et al, 2021). A low-carbon economic dispatch model of the IES to minimize the comprehensive operation cost, including the carbon emission cost, the energy purchasing cost, and the equipment operation cost is constructed. This model can better coordinate all equipment in the IES participating in the energy conservation and emission reduction, improving the rationality of carbon emission cost calculation and effectively reducing the carbon emissions of the IES. (2) Based on the aforementioned mechanism, an optimal dispatch model is constructed for the IES to ensure its economics and eco-friendly performance, especially reducing the carbon emissions of the equipment. For the problems of interval length and number of ladders setting in the ladder-type CEUC model, the proposed model replaces the discontinuous ladder-type CEUC model with a continuous CEUC model based on the DRPPM
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