Making sustainability evaluation of public–private partnership (PPP) microgrid can not only produce a great impact on distributed generation but also be related to the planning and operation of distribution network. In consideration of the identification of key influence factors (KIFs) about the sustainability of PPP microgrid, information loss, and risk attitude of decision-makers (DMs), an integrated decision framework is proposed to evaluate PPP microgrid from the perspective of sustainability. Firstly, a three-stage method based on interval valued triangular fuzzy (IVTF)-Delph is developed to identify and select KIFs, and a sustainable evaluation criteria system is established from the economic aspect, social aspect, environmental aspect, technical aspect, and managerial aspect, respectively. Secondly, DMs’ weights are determined based on the IVTF-TOPSIS method, and combined weights of criteria are determined based on IVTF-AHP and IVTF-entropy. Thirdly, an S-shaped utility function under IVTF environment is utilized to get the ranking of PPP microgrids. Moreover, a case study demonstrates that the proposed sustainability evaluation framework is very suitable for PPP microgrid. Finally, sensitivity analysis shows that the utility values are influenced by risk preference and criterion weight fluctuation.

对公私合作伙伴关系（PPP）微电网进行可持续性评估不仅会对分布式发电产生巨大影响，而且还与配电网的规划和运营有关。考虑到确定有关PPP微电网的可持续性，信息丢失和决策者（DM）的风险态度的关键影响因素（KIF），提出了一个综合决策框架，从可持续性的角度评估PPP微电网。首先，提出了一种基于区间值三角模糊（IVTF）-Delph的三阶段识别和选择KIF的方法，并从经济，社会，环境，技术和管理三个方面建立了可持续评价指标体系。方面。其次，DM的权重是根据IVTF-TOPSIS方法确定的，标准的合并权重是根据IVTF-AHP和IVTF熵确定的。第三，利用IVTF环境下的S形效用函数对PPP微电网进行排名。此外，案例研究表明，提出的可持续性评估框架非常适合PPP微电网。最后，敏感性分析表明效用值受风险偏好和标准权重波动的影响。