随着配电网中分布式光伏的渗透率不断提高,对配电网的运行和控制提出了新的要求,为确保配电网在安全阈值内稳定运作,评估配电网所能接纳的分布式光伏的最大容量至关重要。考虑到集中式计算成本高、通信要求高、可靠性差,难以适应分布式...随着配电网中分布式光伏的渗透率不断提高,对配电网的运行和控制提出了新的要求,为确保配电网在安全阈值内稳定运作,评估配电网所能接纳的分布式光伏的最大容量至关重要。考虑到集中式计算成本高、通信要求高、可靠性差,难以适应分布式光伏大规模接入的配电网实际需求,该文提出一种基于ADMM(alternating direction method of multipliers)的分布式光伏最大接入容量评估方法。以分布式光伏的接入容量和配电网线路的有功功率损耗为目标函数,考虑配电网潮流方程约束、节点电压约束、线路载流容量约束等;通过对模型进行简化,将非凸的优化问题转化为凸二次规划问题,并采用ADMM进行分布式求解,得到不同运行工况下各区域分布式光伏的接入策略;以IEEE-33系统为例进行仿真计算,实验结果验证了所提方法的正确性和有效性。展开更多
Rural development inequality is an important practical issue during the course of full establishment of a ′moderately well-off society′ in modern China,and the objective understanding and evaluation of the status an...Rural development inequality is an important practical issue during the course of full establishment of a ′moderately well-off society′ in modern China,and the objective understanding and evaluation of the status and regional inequality of rural development can provide scientific basis for ′building a new countryside′ and coordination development of rural-urban regions.Based on the county-level data of 2000,2005 and 2009,this paper examines the rural development inequality of Jilin Province in Northeast China by establishing a rural development index.The spatio-temporal dynamic patterns and domain factors are discussed by using the method of exploratory spatial data analysis and multi-regression model.The results are shown as follows.Firstly,most of the counties were in lower development level,which accounted for 58.3%,62.5% and 66.7% of the total counties in 2000,2005 and 2009,respectively.The characteristics of spatial inequality were very obvious at county level.For example,rural development level of Changchun Proper and the proper of seven prefecture-level cities were much higher than that of the surrounding regions.The counties in the eastern and northern Jilin Province were the lowest regions of rural development level,while the middle counties were the rapid growth areas in rural economy.Secondly,Moran′s I of rural development index(RDI) was 0.01,–0.16 and –0.06 in 2000,2005 and 2009,respectively,which indicated that spatial agglomeration of RDI was not obvious in Jilin Province,and took on the characteristic of random distribution.The counties of both the units and its adjacent units have higher development level(HH) were transferred from the western areas to the eastern areas,while the countries of both the units and its adjacent units have lower development level(LL) were diffused from the eastern to middle and western Jilin Province.Finally,the result of multi-regression analysis showed that the improvement of agricultural production condition,development of agricultural economics and the adjustment of industrial structure were the domain factors affecting rural development inequality of Jilin Province in the later ten years.展开更多
On the basis of competency-based comparative advantage theory and reclassification of industries,this paper has discussed whether the FGP-type industry upgrade has taken place across different regions of China and whe...On the basis of competency-based comparative advantage theory and reclassification of industries,this paper has discussed whether the FGP-type industry upgrade has taken place across different regions of China and whether China is able to transcend the middle-income trap through the FGP-type industry upgrade.This paper has discovered that no matter by traditional method of industry classification or the new method of industry classification,China has already experienced the FGP-type industry upgrade and entered into the second stage of this process.While relocating industries to central and western regions,China's eastern region does not have clear directions of industry upgrade of its own.Through analysis on the evolution of comparative advantages across regions,this paper has also discovered that in the process of the FGP industry upgrade,China is facing the risk of falling into comparative advantage trap.These factors are unfavorable to China's implementation of the FGP-type industry upgrade strategy,prevention of the comparative advantage interruptions that may confront middle-income countries and achievement of balanced regional development.展开更多
As the development of＂two-oriented society＂ in Wuhan urban agglomeration, the intercity railway will be an important way of driving the development of urbanization in Wuhan urban agglomeration. Intercity railway sho...As the development of＂two-oriented society＂ in Wuhan urban agglomeration, the intercity railway will be an important way of driving the development of urbanization in Wuhan urban agglomeration. Intercity railway shortens the time in traffic between surrounding cities of Wuhan and it brings a lot of people, materials and information. It has also brought opportunities and challenges to the areas along intercity railway. The question is how to seize the development opportunities and coordinate the contradiction between development and environmental protection, and taking a new type urbanization. The paper, studying on the areas along Wuhan to Xianning intercity railway, made a summary of the objective law of urbanization and the influence to the along areas by the intercity railway, meanwhile, had experienced from the developed areas which along the intercity railway both in China and abroad. Then the paper proposed the urbanization development strategy from the aspect of land use, industry, population and transportation on the basis of analysis to be economic base and development conditions of the areas.展开更多
文摘随着配电网中分布式光伏的渗透率不断提高,对配电网的运行和控制提出了新的要求,为确保配电网在安全阈值内稳定运作,评估配电网所能接纳的分布式光伏的最大容量至关重要。考虑到集中式计算成本高、通信要求高、可靠性差,难以适应分布式光伏大规模接入的配电网实际需求,该文提出一种基于ADMM(alternating direction method of multipliers)的分布式光伏最大接入容量评估方法。以分布式光伏的接入容量和配电网线路的有功功率损耗为目标函数,考虑配电网潮流方程约束、节点电压约束、线路载流容量约束等;通过对模型进行简化,将非凸的优化问题转化为凸二次规划问题,并采用ADMM进行分布式求解,得到不同运行工况下各区域分布式光伏的接入策略;以IEEE-33系统为例进行仿真计算,实验结果验证了所提方法的正确性和有效性。
基金Under the auspices of Key Research Program of Chinese Academy of Sciences(No.KZZD-EW-06-03KSZD-EW-Z-021-03)National Key Science and Technology Support Program of China(No.2008BAH31B06)
文摘Rural development inequality is an important practical issue during the course of full establishment of a ′moderately well-off society′ in modern China,and the objective understanding and evaluation of the status and regional inequality of rural development can provide scientific basis for ′building a new countryside′ and coordination development of rural-urban regions.Based on the county-level data of 2000,2005 and 2009,this paper examines the rural development inequality of Jilin Province in Northeast China by establishing a rural development index.The spatio-temporal dynamic patterns and domain factors are discussed by using the method of exploratory spatial data analysis and multi-regression model.The results are shown as follows.Firstly,most of the counties were in lower development level,which accounted for 58.3%,62.5% and 66.7% of the total counties in 2000,2005 and 2009,respectively.The characteristics of spatial inequality were very obvious at county level.For example,rural development level of Changchun Proper and the proper of seven prefecture-level cities were much higher than that of the surrounding regions.The counties in the eastern and northern Jilin Province were the lowest regions of rural development level,while the middle counties were the rapid growth areas in rural economy.Secondly,Moran′s I of rural development index(RDI) was 0.01,–0.16 and –0.06 in 2000,2005 and 2009,respectively,which indicated that spatial agglomeration of RDI was not obvious in Jilin Province,and took on the characteristic of random distribution.The counties of both the units and its adjacent units have higher development level(HH) were transferred from the western areas to the eastern areas,while the countries of both the units and its adjacent units have lower development level(LL) were diffused from the eastern to middle and western Jilin Province.Finally,the result of multi-regression analysis showed that the improvement of agricultural production condition,development of agricultural economics and the adjustment of industrial structure were the domain factors affecting rural development inequality of Jilin Province in the later ten years.
基金Outcome of the CASS Innovation Program Research and Monitoring And Risk Evaluation of Industrial Economy
文摘On the basis of competency-based comparative advantage theory and reclassification of industries,this paper has discussed whether the FGP-type industry upgrade has taken place across different regions of China and whether China is able to transcend the middle-income trap through the FGP-type industry upgrade.This paper has discovered that no matter by traditional method of industry classification or the new method of industry classification,China has already experienced the FGP-type industry upgrade and entered into the second stage of this process.While relocating industries to central and western regions,China's eastern region does not have clear directions of industry upgrade of its own.Through analysis on the evolution of comparative advantages across regions,this paper has also discovered that in the process of the FGP industry upgrade,China is facing the risk of falling into comparative advantage trap.These factors are unfavorable to China's implementation of the FGP-type industry upgrade strategy,prevention of the comparative advantage interruptions that may confront middle-income countries and achievement of balanced regional development.
文摘As the development of＂two-oriented society＂ in Wuhan urban agglomeration, the intercity railway will be an important way of driving the development of urbanization in Wuhan urban agglomeration. Intercity railway shortens the time in traffic between surrounding cities of Wuhan and it brings a lot of people, materials and information. It has also brought opportunities and challenges to the areas along intercity railway. The question is how to seize the development opportunities and coordinate the contradiction between development and environmental protection, and taking a new type urbanization. The paper, studying on the areas along Wuhan to Xianning intercity railway, made a summary of the objective law of urbanization and the influence to the along areas by the intercity railway, meanwhile, had experienced from the developed areas which along the intercity railway both in China and abroad. Then the paper proposed the urbanization development strategy from the aspect of land use, industry, population and transportation on the basis of analysis to be economic base and development conditions of the areas.
