基于LCC的电力变压器检修策略研究

Research on maintenance strategy of power transformer based on LCC

电力变压器是电网系统中的重要设备,其工作过程的经济性和可靠性直接影响电网运行成本。为提高变压器的经济性和可靠性,寻找最优检修策略,基于全寿命周期成本提出了一种检修方法。论述了全寿命周期成本理论,确定了以成本最小为目标的电力变压器检修模型。分析了影响变压器检修策略的众多因素,采用灰色关联法对主要影响因素进行综合分析,选择出最优投资方案。以某配电网络为例,基于所述方法对变压器检修成本进行了分析。结果表明:基于全寿命周期的检修策略能够大幅度降低检修成本。

Power transformer is an important equipment in power grid system,and the economy and reliability of its working process directly affect the running cost of power network.In order to improve the economy and reliability of transformer,the optimal maintenance strategy is found,and a maintenance method based on the whole life cycle cost is proposed.The whole life cycle cost theory is discussed,and the maintenance model of power transformer aiming at the minimum cost is determined.This paper analyzes many factors that affect the transformer maintenance strategy,uses the grey correlation method to carry on the comprehensive analysis to the main influencing factors,selects the optimal investment scheme.Taking a distribution network as an example,the maintenance cost of transformer is analyzed based on the method.The results show that the maintenance strategy based on full life cycle can greatly reduce the maintenance cost.