The planning environmental impact assessment (EIA) of transmission and transformation power grid at levels of 500 and 220 kV had been finished completely in the 13 municipalities of Jiangsu Province by the end of 20...The planning environmental impact assessment (EIA) of transmission and transformation power grid at levels of 500 and 220 kV had been finished completely in the 13 municipalities of Jiangsu Province by the end of 2012, which played important roles in guiding and planning the following transmission and transformation projects in environmental protection. In this paper, through the detail analysis on the objective and significance of the planning EIA of transmission and transformation power grid, legal basis and planning EIA practices, some suggestions and thinking about the planning EIA of transmission and transformation power grid were put forward.展开更多
The safety and stability study on Northeast, North, East, Northwest and Central China power grids had been carried out, which provided technical supports to planning design of regional power grids. By analyzing safety...The safety and stability study on Northeast, North, East, Northwest and Central China power grids had been carried out, which provided technical supports to planning design of regional power grids. By analyzing safety and stability under severe faults in regional power grids, revealed weaknesses on power grid configurations and measures for preventing from loss of stability were presented. In comparison of various schemes of power system safety and stability among parts of power grids, more than two recommended schemes can be chosen as reference in planning design for regional power grids. Considering the safety and stability control measures necessary for each power grids, it is believed the trunk networks of all power grids can fulfill the third criteria of Guideline for Power System Safety and Stability, while the weakness and predominated hydropower may deteriorate safety and stability of power grids. The power grid shall be regulated in line with the variation of boundary conditions.展开更多
The reasonability of the adopted capacity load ratio numerical value in urban power grid planning determines the economy of planning level yearly power grid.Too large capacity load ratio will result in the increasing ...The reasonability of the adopted capacity load ratio numerical value in urban power grid planning determines the economy of planning level yearly power grid.Too large capacity load ratio will result in the increasing investment in the early period of power grid construction, however, too small capacity load ratio will make the power grid have poor adaptability, affecting the power supply. Reasonably determining the adopted regional power grid capacity load ratio quantitative numerical value in planning has a strong guiding significance for constructing reliable and economic power grid and preventing power grid from excessive advance or lagging behind the load development. This paper, through the statistics and analysis of a certain regional power grid 2010-2012 three years' power grid daily load characteristics and the investment benefit evaluation of three years' 220KV power grid individual project, makes a preliminary analysis and puts forwards the specific advice on the reasonable values of power ~rid 35-220KV power transformation capacity load ratio.展开更多
碳捕集电厂(carbon capture power plant,CCPP)在降低碳排放的同时,增强了电力系统的灵活性,是促进可再生能源消纳和低碳化转型的关键。考虑CCPP运行的灵活性,提出一种网‒储联合规划方法。针对海量场景规划计算困难的问题,利用改进k-me...碳捕集电厂(carbon capture power plant,CCPP)在降低碳排放的同时,增强了电力系统的灵活性,是促进可再生能源消纳和低碳化转型的关键。考虑CCPP运行的灵活性,提出一种网‒储联合规划方法。针对海量场景规划计算困难的问题,利用改进k-means算法对风电出力场景进行削减,并基于Spearman系数筛选典型出力场景。分析CCPP的灵活性运行机理,构建电力系统灵活性供给模型和量化指标。建立考虑CCPP的网‒储双层优化模型,在规划层中确定输电线路和储能的配置方案,并在运行层中考虑CCPP的灵活性。以改进IEEE RTS-24节点系统为算例进行分析,结果表明:所提规划方法能够提高电力系统的灵活性裕度,降低输电线路和储能的投资成本。研究结果证明了所提规划方法的有效性。展开更多
基金Supported by the National Key Technology R&D Program(2012BAC20B1003)the Key National Social Science Fund Project(12&ZD214)the Special Fund Project for the Scientific Research of the Environmental Protection Welfare Industry(201209001)
文摘The planning environmental impact assessment (EIA) of transmission and transformation power grid at levels of 500 and 220 kV had been finished completely in the 13 municipalities of Jiangsu Province by the end of 2012, which played important roles in guiding and planning the following transmission and transformation projects in environmental protection. In this paper, through the detail analysis on the objective and significance of the planning EIA of transmission and transformation power grid, legal basis and planning EIA practices, some suggestions and thinking about the planning EIA of transmission and transformation power grid were put forward.
文摘The safety and stability study on Northeast, North, East, Northwest and Central China power grids had been carried out, which provided technical supports to planning design of regional power grids. By analyzing safety and stability under severe faults in regional power grids, revealed weaknesses on power grid configurations and measures for preventing from loss of stability were presented. In comparison of various schemes of power system safety and stability among parts of power grids, more than two recommended schemes can be chosen as reference in planning design for regional power grids. Considering the safety and stability control measures necessary for each power grids, it is believed the trunk networks of all power grids can fulfill the third criteria of Guideline for Power System Safety and Stability, while the weakness and predominated hydropower may deteriorate safety and stability of power grids. The power grid shall be regulated in line with the variation of boundary conditions.
文摘The reasonability of the adopted capacity load ratio numerical value in urban power grid planning determines the economy of planning level yearly power grid.Too large capacity load ratio will result in the increasing investment in the early period of power grid construction, however, too small capacity load ratio will make the power grid have poor adaptability, affecting the power supply. Reasonably determining the adopted regional power grid capacity load ratio quantitative numerical value in planning has a strong guiding significance for constructing reliable and economic power grid and preventing power grid from excessive advance or lagging behind the load development. This paper, through the statistics and analysis of a certain regional power grid 2010-2012 three years' power grid daily load characteristics and the investment benefit evaluation of three years' 220KV power grid individual project, makes a preliminary analysis and puts forwards the specific advice on the reasonable values of power ~rid 35-220KV power transformation capacity load ratio.
文摘碳捕集电厂(carbon capture power plant,CCPP)在降低碳排放的同时,增强了电力系统的灵活性,是促进可再生能源消纳和低碳化转型的关键。考虑CCPP运行的灵活性,提出一种网‒储联合规划方法。针对海量场景规划计算困难的问题,利用改进k-means算法对风电出力场景进行削减,并基于Spearman系数筛选典型出力场景。分析CCPP的灵活性运行机理,构建电力系统灵活性供给模型和量化指标。建立考虑CCPP的网‒储双层优化模型,在规划层中确定输电线路和储能的配置方案,并在运行层中考虑CCPP的灵活性。以改进IEEE RTS-24节点系统为算例进行分析,结果表明:所提规划方法能够提高电力系统的灵活性裕度,降低输电线路和储能的投资成本。研究结果证明了所提规划方法的有效性。