含分布式供能设备的综合能源系统规划评价

Evaluation of integrated energy system planning with distributed energy devices

综合能源系统作为能源领域发展趋势,对其进行综合评估,在规划阶段进行方案优选,保证最大化能源利用效率以及供能系统安全稳定运行,具有至关重要的意义。文章从可靠性、经济性、环保性角度出发,以热电联供系统为例,综合考虑电网、热网特性建立了综合能源系统评价体系。鉴于评价指标量纲不同以及指标优劣的模糊性,采用模糊综合评价法对指标进行模糊变换,通过反熵权法确定权重,针对不同的用户供能设备配置方案,将评价矩阵转换为综合评分。通过算例验证了所提评价体系的可行性和有效性,并给出了不同设备的配置建议。结果表明,小型燃气锅炉不宜在热电联供系统中进行配置,分布式光伏和电热水锅炉可显著提升系统性能,并且提升的幅度存在边际效应。

Integrated energy system becomes future trend of energy field.It is vital to optimize the scheme in the planning stage to ensure the maximal energy efficiency and the safe and stable operation of energy supply system.Evaluation system of integrated energy system is established from the aspects of reliability,economic and environmental capabilities,combining properties of distribution network and heating network.Due to the dimension and illegibility of indices,the fuzzy comprehensive evaluation is applied to conduct index fuzzy transform.The weight is determined by anti-entropy weight method,which converts appraisal matrix into comprehensive score,the feasibility and validity of evaluation system is proved through case study and device configuration is proposed.Result indicates that mini gas boilers don’t suit CHP system when distributed PVs and electric boilers suit it well.