一种配电网投资项目的综合评价与优选排序方法
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引用本文:刘 向 实.一种配电网投资项目的综合评价与优选排序方法[J].计算技术与自动化,2021,(2):159-163
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刘 向 实 (国网河南省电力公司河南 郑州 450000) 
中文摘要:配网投资项目具有项目众多、规模相对小、项目繁杂、时间紧迫等配电网建设和运维自身的特点,在投资需求远大于投资能力的情况,基于项目综合评价实现优选排序是实现配电网精准投资的关键手段。为此,提出了一种计及指标约束同时兼顾投资效益的中压配电网项目优选方法。以配电网投资效果为指标构建评价体系,并利用建设目标对项目属性进行分类,基于灰色关联度法深入挖掘项目属性与评价指标间的关联关系,探明指标改善所对应的投资概算。为了同时兼顾规划指标与投资成效,提出了计及指标约束的配网项目两阶段优选排序法,将优选过程分为针对关键规划指标的项目优选和针对普通指标的项目优选两个阶段。通过对某地市电力公司中压配电网项目进行优选评估,验证了所提方法的有效性与合理性。
中文关键词:项目优选  指标体系  灰色关联度  投资成效
 
A Comprehensive Evaluation and Optimal Selection Method for Distribution Network Investment Projects
Abstract:The distribution network investment project has its own characteristics of distribution network construction and operation, such as numerous projects, relatively small scale, complex projects, and urgent time. In the case that the investment demand is far greater than the investment capacity, the key means to achieve accurate investment in distribution network is to achieve the optimal sequencing based on the comprehensive evaluation of the project. Therefore, a method of medium-voltage distribution network projects selection optimization considering index constraints and investment benefits is proposed. Investment benefits evaluation index systems are established, and the projects are classified into several kinds of attribute category according to the construction purpose and the relationship between project attributes and evaluation indexes is analyzed by using grey correlation method. Then, the calculation method of investment costs needed for the improvement of each index is given. Finally, the projects selection optimization method with the constraints of index is proposed. In order to enhance investment benefits as well as ensure the realization of key planning indicators, the projects selection process is divided into two steps: projects selection aiming at the key planning indicators and projects selection aiming at the common indicators. The proposed method is used to select the optimal distribution network investment projects of a local power company. The case study results demonstrated the effectiveness and the validity of the method.
keywords:projects selection optimization  indicator system  grey correlation  analysis  investment effectiveness
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