This report illustrates how management accounting can be used in helping an organization reach sustainability by applying four main tools in management accounting to a dairy company.These tools are Life-Cycle Analysis...This report illustrates how management accounting can be used in helping an organization reach sustainability by applying four main tools in management accounting to a dairy company.These tools are Life-Cycle Analysis,Identification of Relevant Costs,Activity-Based Costing(ABC)System and Balancing Score Card,all of which can help qualify and consequently quantify the various costs(including environmental costs)incurred during the operation of a company.Besides that,the above tools can also be utilised in a company’s decision-making processes by the man-agement team.Thus,it is suggested that companies integrate these tools into their reporting system.This report illustrates the definition of a sustainable organization in the beginning,followed by detailed descriptions of the four management accounting tools,together with their applications to a diary company.The report ends with a summary on which type of role each tool plays in the re-porting system.展开更多
The cost of Energy Storage System(ESS)for frequency regulation is difficult to calculate due to battery’s degradation when an ESS is in grid-connected operation.To solve this problem,the influence mechanism of actual...The cost of Energy Storage System(ESS)for frequency regulation is difficult to calculate due to battery’s degradation when an ESS is in grid-connected operation.To solve this problem,the influence mechanism of actual operating conditions on the life degradation of Li-ion battery energy storage is analyzed.A control strategy of Li-ion ESS participating in grid frequency regulation is constructed and a cost accounting model for frequency regulation considering the effect of battery life degradation is established.The estimated operating life and annual average cost of the Li-ion ESS under different dead bands and SOC set-points are calculated.The case studies show that the estimated operating life of the Li-ion ESS under the actual operating condition differs significantly from the nominal life provided by the manufacturer under the standard condition and the full discharge mode.This paper provides an accurate costing method for the ESS participating in grid frequency regulation to help the promotion of the ESS to participate in the ancillary service market.展开更多
The Nash equilibrium and competition equilibrium have been widely studied in the electric power market up to now.In this paper,it is explained that the Nash equilibrium can be achieved by using marginal cost pricing a...The Nash equilibrium and competition equilibrium have been widely studied in the electric power market up to now.In this paper,it is explained that the Nash equilibrium can be achieved by using marginal cost pricing and the com-petition equilibrium can be performed by using accounting cost pricing based on the model of the power market system.The comparison between the Nash equilibrium and competition equilibrium indicates that surplus and unfair allocation of market benefits may be obtained by the Nash equilibrium,and the competition equilibrium realizes the optimization in economics with maximum market efficiency and fairness for market benefit allocations while the optimization in mathematics is achieved by the Nash equilibrium.There is sameness between the Nash equilibrium and competition equilibrium at the point when the power network characteristics are disregarded.The case study is made on a IEEE 30-bus system,and the calculation results indicate that it is the key issue to perform the competition equilibrium by using accounting cost pricing.展开更多
文摘This report illustrates how management accounting can be used in helping an organization reach sustainability by applying four main tools in management accounting to a dairy company.These tools are Life-Cycle Analysis,Identification of Relevant Costs,Activity-Based Costing(ABC)System and Balancing Score Card,all of which can help qualify and consequently quantify the various costs(including environmental costs)incurred during the operation of a company.Besides that,the above tools can also be utilised in a company’s decision-making processes by the man-agement team.Thus,it is suggested that companies integrate these tools into their reporting system.This report illustrates the definition of a sustainable organization in the beginning,followed by detailed descriptions of the four management accounting tools,together with their applications to a diary company.The report ends with a summary on which type of role each tool plays in the re-porting system.
基金This work is supported in part by Industrial Innovation of Jilin Province Development and Reform Commission(2017C017-2)Science&Technology Project of SGCC(Key technology and application of super large capac-ity battery energy storage system),and Jilin Provincial“13th Five-Year Plan”Science and Technology Project([2016]88).
文摘The cost of Energy Storage System(ESS)for frequency regulation is difficult to calculate due to battery’s degradation when an ESS is in grid-connected operation.To solve this problem,the influence mechanism of actual operating conditions on the life degradation of Li-ion battery energy storage is analyzed.A control strategy of Li-ion ESS participating in grid frequency regulation is constructed and a cost accounting model for frequency regulation considering the effect of battery life degradation is established.The estimated operating life and annual average cost of the Li-ion ESS under different dead bands and SOC set-points are calculated.The case studies show that the estimated operating life of the Li-ion ESS under the actual operating condition differs significantly from the nominal life provided by the manufacturer under the standard condition and the full discharge mode.This paper provides an accurate costing method for the ESS participating in grid frequency regulation to help the promotion of the ESS to participate in the ancillary service market.
基金This work was supported in part by the National Natural Science Foundation of China(No.71403098)and the Humanities and Social Science Foundation of the Ministry of Education(No:14YJA790007).
文摘The Nash equilibrium and competition equilibrium have been widely studied in the electric power market up to now.In this paper,it is explained that the Nash equilibrium can be achieved by using marginal cost pricing and the com-petition equilibrium can be performed by using accounting cost pricing based on the model of the power market system.The comparison between the Nash equilibrium and competition equilibrium indicates that surplus and unfair allocation of market benefits may be obtained by the Nash equilibrium,and the competition equilibrium realizes the optimization in economics with maximum market efficiency and fairness for market benefit allocations while the optimization in mathematics is achieved by the Nash equilibrium.There is sameness between the Nash equilibrium and competition equilibrium at the point when the power network characteristics are disregarded.The case study is made on a IEEE 30-bus system,and the calculation results indicate that it is the key issue to perform the competition equilibrium by using accounting cost pricing.
