抽水蓄能电站节能指标体系综合评价研究

An energy-saving index system for comprehensive evaluation on pumped storage power station

本文建立了抽水蓄能电站节能指标体系,并设计了一种基于主客观综合赋权法的抽水蓄能电站节能水平动态综合评价算法,利用历史数据,实现了对抽水蓄能电站在多时段内进行节能水平综合评价。首先通过介绍抽水蓄能电站的能源流程结构和运行特点建立了节能指标体系,然后应用序关系分析法和纵向拉开档次法确定了各指标的综合权重值,提出了对指标观测值设定裕度的方法,并基于线性投影法对定量指标值进行无量纲化处理,同时采用三角模糊数法对定性指标进行量化处理,最后将各项指标值线性加权得出电站在各时刻的节能水平综合评价值。通过对某抽水蓄能电站的数据分析,验证了评价的合理性和算法性能。

This paper formulates an energy-saving index system of pumped storage power stations, and develops a dynamic algorithm of comprehensive energy level evaluation on the stations using a comprehensive method of objective and subjective weighting. Using historical data, this method can achieve a comprehensive evaluation on the energy levels over multiple operation periods. We demonstrate the energy flow structure and operation characteristics of a pumped storage station to formulate the index system, then determine synthesized weights for each index using G1 method and vertical scatter degree method. A margin method is adopted for the observed index values, and a linear projection method is used to nondimensionalize the indicators that are quantified with a triangle fuzzy matrix. Finally, we can calculate the linearly-weighted indexes of the energy level for the power station operated in each period. The performance of this model and its evaluation results are verified via an application to a pumped storage power station.