The inter-regional electricity market is instrumen-tal in enhancing the economic efficiency,reliability,and integra-tion of renewable generation within interconnected power sys-tems.As the market boundary expands,the ...The inter-regional electricity market is instrumen-tal in enhancing the economic efficiency,reliability,and integra-tion of renewable generation within interconnected power sys-tems.As the market boundary expands,the complexity and so-lution difficulties of market clearing increase rapidly.The pres-ence of hybrid alternating current(AC)/direct current(DC)in-terconnector networks further compounds challenges in model-ing trading paths and transmission tariffs.To address these is-sues,this paper proposes a path-aware_market-clearing(PAMC)model tailored for the inter-regional electricity market,which accommodates the hybrid AC/DC interconnector net-work.A variable aggregation strategy is proposed to reduce the problem scale while ensuring equivalent optimality.In addition,a novel redundancy elimination method is developed to expedite the solution of the market-clearing problem.This framework utilizes envelope approximations of residual demand curves to identify bidding blocks that will not affect the marginal price.Corresponding decision variables are then constrained to their bounds to remove redundant information.Comprehensive case studies across different power system scales validate the superi-ority of the proposed PAMC model in improving social welfare,and verify the effectiveness of the proposed redundancy elimina-tion method in accelerating the solution of the market-clearing problem.展开更多
To examine the correlation between regional economic growth and inter-region transportation costs in China,this study establishes a regional economic growth model embedded with inter-region transportation costs based ...To examine the correlation between regional economic growth and inter-region transportation costs in China,this study establishes a regional economic growth model embedded with inter-region transportation costs based on the Cobb-Douglas production function.Based on a balanced growth empirical model,this study verifies the correlation by conducting a regression analysis of the panel data of 29 provinces,municipalities,and autonomous regions from 1985 to 2015.The empirical results show that:(1)The per capita GDP growth among the three regions(namely,the eastern,central,and westem regions of China)meets a conditional convergence trend,and the decreasing of the inter-region transportation costs increases the convergence speed;(2)The per capita GDP growth is in line with the club convergence trend within each of the three regions;(3)The trend of the output elasticity of the inter-region transportation costs shows that the gradual decrease of inter-region transportation costs has a positive correlation with the narrowing of economic disparity after the year 2000,accelerating“common prosperity”across different regions in China.展开更多
基金This work was supported by the State Grid Corporation of China project“Research on Optimal Modeling and Fast Solution Technology of Inter-provincial Medium and Long Term Transactions Supporting Clearing with Inter-period Coupling”(No.5100-202255381A-2-0-ZN).
文摘The inter-regional electricity market is instrumen-tal in enhancing the economic efficiency,reliability,and integra-tion of renewable generation within interconnected power sys-tems.As the market boundary expands,the complexity and so-lution difficulties of market clearing increase rapidly.The pres-ence of hybrid alternating current(AC)/direct current(DC)in-terconnector networks further compounds challenges in model-ing trading paths and transmission tariffs.To address these is-sues,this paper proposes a path-aware_market-clearing(PAMC)model tailored for the inter-regional electricity market,which accommodates the hybrid AC/DC interconnector net-work.A variable aggregation strategy is proposed to reduce the problem scale while ensuring equivalent optimality.In addition,a novel redundancy elimination method is developed to expedite the solution of the market-clearing problem.This framework utilizes envelope approximations of residual demand curves to identify bidding blocks that will not affect the marginal price.Corresponding decision variables are then constrained to their bounds to remove redundant information.Comprehensive case studies across different power system scales validate the superi-ority of the proposed PAMC model in improving social welfare,and verify the effectiveness of the proposed redundancy elimina-tion method in accelerating the solution of the market-clearing problem.
基金This work is financially supported by the fund of humanistic and social science study of the Ministry of Education(study on industry specialties and logistics system in the western region of China under the viewpoint of"Silk Road Economic Belt,"15YJC790009).
文摘To examine the correlation between regional economic growth and inter-region transportation costs in China,this study establishes a regional economic growth model embedded with inter-region transportation costs based on the Cobb-Douglas production function.Based on a balanced growth empirical model,this study verifies the correlation by conducting a regression analysis of the panel data of 29 provinces,municipalities,and autonomous regions from 1985 to 2015.The empirical results show that:(1)The per capita GDP growth among the three regions(namely,the eastern,central,and westem regions of China)meets a conditional convergence trend,and the decreasing of the inter-region transportation costs increases the convergence speed;(2)The per capita GDP growth is in line with the club convergence trend within each of the three regions;(3)The trend of the output elasticity of the inter-region transportation costs shows that the gradual decrease of inter-region transportation costs has a positive correlation with the narrowing of economic disparity after the year 2000,accelerating“common prosperity”across different regions in China.
