Carbon efficiency evaluation method for urban energy system with multiple energy complementary

IF 1.9 Q4 ENERGY & FUELS Global Energy Interconnection Pub Date : 2024-04-01 DOI:10.1016/j.gloei.2024.04.003
Xianan Jiao , Jiekang Wu , Yunshou Mao , Mengxuan Yan
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Abstract

Urban energy systems (UESs) play a pivotal role in the consumption of clean energy and the promotion of energy cascade utilization. In the context of the construction and operation strategy of UESs with multiple complementary energy resources, a comprehensive assessment of the energy efficiency is of paramount importance. First, a multi-dimensional evaluation system with four primary indexes of energy utilization, environmental protection, system operation, and economic efficiency and 21 secondary indexes is constructed to comprehensively portray the UES. Considering that the evaluation system may contain a large number of indexes and that there is overlapping information among them, an energy efficiency evaluation method based on data processing, dimensionality reduction, integration of combined weights, and gray correlation analysis is proposed. This method can effectively reduce the number of calculations and improve the accuracy of energy efficiency assessments. Third, a demonstration project for a UES in China is presented. The energy efficiency of each scenario is assessed using six operational scenarios. The results show that Scenario 5, in which parks operate independently and investors build shared energy-storage equipment, has the best results and is best suited for green and low-carbon development. The results of the comparative assessment methods show that the proposed method provides a good energy efficiency assessment. This study provides a reference for the optimal planning, construction, and operation of UESs with multiple energy sources.

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多能互补城市能源系统的碳效率评估方法
城市能源系统(UES)在消费清洁能源和促进能源梯级利用方面发挥着举足轻重的作用。在多能互补的城市能源系统建设和运营策略中,对能源效率进行综合评估至关重要。首先,构建了能源利用、环境保护、系统运行、经济效益四个一级指标和 21 个二级指标的多维评价体系,对 UES 进行全面刻画。考虑到评价体系可能包含大量指标,且指标间存在信息重叠,提出了一种基于数据处理、降维、组合权重整合和灰色关联分析的能效评价方法。该方法可有效减少计算量,提高能效评估的准确性。第三,介绍了一个在中国开展的 UES 示范项目。利用六种运行情景对每种情景的能效进行了评估。结果表明,方案 5(园区独立运营,投资者建设共享储能设备)效果最好,最适合绿色低碳发展。比较评估方法的结果表明,建议的方法提供了良好的能效评估。本研究为多能源UES的优化规划、建设和运营提供了参考。
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来源期刊
Global Energy Interconnection
Global Energy Interconnection Engineering-Automotive Engineering
CiteScore
5.70
自引率
0.00%
发文量
985
审稿时长
15 weeks
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