The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, dete...The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, determining their weight may lead to uncertainty.. Therefore, an improved AHP method had been developed. The process of the improved AHP method involved four key procedures. The weights of pollution factors were completely related to the objective monitoring data through the standardization of these procedures. The environmental comprehensive quality of water and sediment of Xuanwu Lake, Nanjing, China had been evaluated. The environmental quality comprehensive indices (EQCI) of the water in 1991-1995 and 1996-2000 were 3.32 and 1.85, respectively, indicating that the water quality improved. The EQCI of the sediment in 1995 and 2000 indicates that the sediment contamination decreased from 1995 to 2000. Such results agreed with the fact that the lake had been under comprehensive control. However, with the classical AHP method, the EQCI of the sediment in the northwestern part of the lake may have indicated that sediment contamination increased from 1995 to 2000. The discrepancy may have resulted from the judgment difference of the experts. The improved AHP method can avoid arbitrariness of subjective judgment and can reflect the real influential factors of environment pollution in different periods or regions.展开更多
储能选型是储能参与新能源一次调频规划和设计的关键内容,涉及到安全性、一次调频适应性、经济性和环保性等多方面指标,是一个复杂的多目标决策问题。提出基于层次分析法(analytic hierarchy process,AHP)和逼近理想解排序方法(techniqu...储能选型是储能参与新能源一次调频规划和设计的关键内容,涉及到安全性、一次调频适应性、经济性和环保性等多方面指标,是一个复杂的多目标决策问题。提出基于层次分析法(analytic hierarchy process,AHP)和逼近理想解排序方法(technique for order preference by similarity to an ideal solution,TOPSIS)相结合的储能参与新能源一次调频选型方案。分析各个指标特征,构建两层决策体系。根据专家打分和实际应用需求,采用AHP法得到各个决策指标的权重,进一步采用TOPSIS法根据各指标的权重和相关参数对储能进行选型。最后,选取压缩空气、飞轮储能、磷酸铁锂电池和超级电容器等12种储能类型为案例进行分析,结果表明,磷酸铁锂电池在参与新能源一次调频应用场景中占有优势。该选型方案可以为储能参与新能源一次调频规划和设计提供一定的理论支撑。展开更多
基金National Natural Science Foundation of China, No.40771186.
文摘The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, determining their weight may lead to uncertainty.. Therefore, an improved AHP method had been developed. The process of the improved AHP method involved four key procedures. The weights of pollution factors were completely related to the objective monitoring data through the standardization of these procedures. The environmental comprehensive quality of water and sediment of Xuanwu Lake, Nanjing, China had been evaluated. The environmental quality comprehensive indices (EQCI) of the water in 1991-1995 and 1996-2000 were 3.32 and 1.85, respectively, indicating that the water quality improved. The EQCI of the sediment in 1995 and 2000 indicates that the sediment contamination decreased from 1995 to 2000. Such results agreed with the fact that the lake had been under comprehensive control. However, with the classical AHP method, the EQCI of the sediment in the northwestern part of the lake may have indicated that sediment contamination increased from 1995 to 2000. The discrepancy may have resulted from the judgment difference of the experts. The improved AHP method can avoid arbitrariness of subjective judgment and can reflect the real influential factors of environment pollution in different periods or regions.
文摘储能选型是储能参与新能源一次调频规划和设计的关键内容,涉及到安全性、一次调频适应性、经济性和环保性等多方面指标,是一个复杂的多目标决策问题。提出基于层次分析法(analytic hierarchy process,AHP)和逼近理想解排序方法(technique for order preference by similarity to an ideal solution,TOPSIS)相结合的储能参与新能源一次调频选型方案。分析各个指标特征,构建两层决策体系。根据专家打分和实际应用需求,采用AHP法得到各个决策指标的权重,进一步采用TOPSIS法根据各指标的权重和相关参数对储能进行选型。最后,选取压缩空气、飞轮储能、磷酸铁锂电池和超级电容器等12种储能类型为案例进行分析,结果表明,磷酸铁锂电池在参与新能源一次调频应用场景中占有优势。该选型方案可以为储能参与新能源一次调频规划和设计提供一定的理论支撑。
