基于资产全寿命成本数据模型的配变更换策略的研究

Research on distribution transformer replacement strategy based on asset life cycle cost data model

在配电变压器改造调整的研究中,绝大部分都是围绕高耗能或老旧变压器的大修以延长寿命,针对单一备选配变时直接更换低损耗变压器以降低成本,通过这两个方面的对比来确定规划方案。当存在多种备选配变时,本文提出一种基于全寿命周期成本的高耗能配电变压器更换策略。通过基于设备级的全寿命周期成本构建规划方案的比选模型,对本文所提的更换策略进行评估,以兼顾最小化经济成本、满足节能减排需要、减少故障处置成本为目标,得出最合理的改造方式和最佳的更换时机,最终采用相关算例验证该策略的可行性和有效性,验证从全寿命周期成本角度、选择低能耗变压器和运用合理的检修方式降低LCC,提升经济性,降低电网的规划投资成本。

In the research of distribution transformer modification and adjustment,most of them are centered on around the overhaul of high energy consumption or old transformer to prolong life.In the case of only one alternative distribution transformer,The original transformer is directly replaced by a lower loss transformer to reduce the cost.And through the comparison of these two aspects,the transformation plan can be determined.When there are a variety of alternative transformers,this paper proposes a replacement strategy of high energy consumption distribution transformer based on life cycle cost.Which based on the life cycle cost of equipment level,a comparison model of planning schemes is constructed,and the replacement strategy proposed in this paper is evaluated.The objective is to minimize the economic cost,meet the needs of energy saving and emission reduction,and reduce the cost of fault disposal.The most reasonable transformation mode and the best replacement opportunity are obtained,and finally the relevant strategies are adopted.Examples verify the feasibility and effectiveness of the strategy,and verify that LCC can be reduced by choosing low energy consumption transformers and using reasonable maintenance methods from the perspective of life cycle cost,which can improve the economy and reduce the planning investment cost of power grid.