电网设备能效综合评估算法及其应用

Power Grid Equipment Energy Efficiency Synthesis Evaluation Algorithm and Its Application

为了降低电网能耗,为其设备优化升级提供指导,以电网主要设备为研究对象,建立了能效综合评估算法。首先分析电网设备能效影响因素,建立设备能效模型,从单类设备综合损耗率与单台设备损耗率严重超标台数率两个方面挖掘能效指标并给出指标计算方法。考虑到各指标对能效影响的重要程度是多方面的,建立递阶层次结构模型,采用层次分析法计算指标的权重值,同时采用模糊综合评价法计算指标的能效量化分值,以克服其模糊性。采用所建立的算法对某电网的主要设备进行能效分析评估,结果表明了该方法的实用性和有效性。

In order to reduce energy consumption of power grid and provide guidance for its equipment optimizing and upgrading, energy efficiency synthesis evaluation algorithm is established for main equipments in the power grid,. Firstly, the energy efficiency influence factors of power grid equipments is analyzed and energy efficiency model for the equipments is established. Energy efficiency indexe calculation method is proposed by analyzing energy efficiency indexes from two aspects- synthesis loss rate of single class equipment and amount rate of equipment whose loss rate exceeds standard badly. Consider- ing various influence of energy efficiency indexes to energy efficiency and their different importance, hierarchical structural model is established and analytic hierarchy process is used to calculate importance degree of indexes. Furthermore, fuzzy synthesis evaluation method is introduced to calculate energy efficiency quantitative score of indexs so as to overcome its fuzziness. Finally, the proposed algorithm is applied to energy efficiency evaluation for main equipments in a power grid. The results show the practicability and availability of the proposed method.