基于信息熵和模糊分析法的配电网投资效益评估及决策

随着电网建设规模增大,完善配电网建设改造方案,做好配电网投资,对保证优质的电力供应和地区经济社会发展具有重要的意义。针对大量可选改造措施,提出一种适用于配电网经济改造的投资效益评估和决策模型。首先,考虑分布式清洁能源、配电自动化等主动元素,从技术性能和经济效益两方面出发,建立了配电网技术经济评估指标体系。根据配电网改造项目的投资效益单体评估结果,结合信息熵和模糊分析法建立了改进的配电网投资效益综合评估方法和评估模型。在量化打分和综合排序基础上,以资金约束和性能约束为条件,建立了针对项目组合优选的配电网投资决策模型。通过算例验证了所提模型的有效性。研究结果对于指导未来配电网投资效益评估与投资决策发展有重要意义。

Investment benefits evaluation and decision for distribution network based on information entropy and fuzzy analysis method

It is of great significance to ensure high quality power supply and regional economic and social development by the means of improving distribution network reconstruction schemes and doing well invest in distribution network with the development of power grid. In order to deal with large amount of candidate measures, an investment benefits evaluation and decision model used for distribution network reconstruction is established in this paper. In the view of technical performance and economic benefit, a tech-economic evaluation index system of distribution network considering more reconstructed schemes such as distributed generation and distribution automation is established. Based on the evaluation result of the investment benefit of the distribution network reconstruction project, the investment benefit evaluation method and model are analyzed by combining the information entropy and the fuzzy analytic process. In addition, on the basis of quantitative scoring and comprehensive sorting, the investment decision model of distribution network constrained by funds and performance is established. Finally, the effectiveness of the model is verified. It is important to the investment evaluation and decision for future distribution network. This work is supported by Science and Technology Project of State Grid Corporation of China (No. SGSCJY00GHJS1800020).