基于资金时间价值的配电变压器全生命周期模型

Full Life Cycle Model of Distribution Transformer Based on Time Value of Funds

摘要: 由于配电设备的全生命周期构成因素是随时间不断变化的动态过程，因此针对配电网规划或改造过程中的设备选型问题，本文以配电变压器为研究对象，建立一套全生命周期模型，为配电网设备选型提供参考依据。首先充分考虑配电变压器全寿命周期成本的主要影响因素，对变压器投资阶段、运行阶段、运行维护阶段、故障阶段以及退役阶段分别进行建模；然后利用资金时间价值方法，构建变压器全寿命周期成本的资金时间价值模型，用以计算配电网变压器整个运行年限内的全周期成本；最后以深圳龙岗局配电网规划项目作为案例推演，通过比较两款不同型号变压器的全生命周期成本来证明所建立模型的有效性和实用性，并且通过模型模拟结果直观反映配电变压器不同阶段的成本波动情况。

Abstract: Because the components of the full life cycle of distribution equipment are dynamic processes, a set of life cycle models for distribution transformers are established to provide a reference for equipment selection in the process of distribution network planning or transformation. Firstly, the main influencing factors of the full life cycle cost of the distribution transformer are fully considered, and the transformer investment phase, operation phase, operation and maintenance phase, failure phase and decommissioning phase are respectively modeled. Then, using the capital time value method, the capital time value model of the transformer life cycle cost is constructed to calculate the full cycle cost of the distribution network transformer throughout the operating period. Finally, the Shenzhen Longgang Bureau distribution network planning project is used as a case deduction. The validity and practicability of the established model are proved by comparing the full life cycle cost of two different types of transformers, and the cost fluctuations of different stages of the distribution transformer are visually reflected by the model simulation results.