Besides common characteristics of wind power,there are some special characteristics in China power system,including large-scale,long distance transmission and lack of flexible regulating power sources.These special ch...Besides common characteristics of wind power,there are some special characteristics in China power system,including large-scale,long distance transmission and lack of flexible regulating power sources.These special characteristics make power dispatch more challenging in China.Many studies have been carried out and some improvements are presented including wind power monitoring and control as well as evaluation of wind power integration capabilities.As a demonstration project,the technologies are integrated into the energy management system and are implemented in the Northwest China power system.They provide effective measures for wind power dispatch in the grid.展开更多
随着风电并网规模的不断增长,其出力不确定性给综合能源系统(integrated energy system,IES)的稳定经济运行带来了巨大挑战。对此,文中提出基于改进风电场景削减算法的IES低碳经济调度方法。首先,采用改进的迭代自组织数据分析算法(iter...随着风电并网规模的不断增长,其出力不确定性给综合能源系统(integrated energy system,IES)的稳定经济运行带来了巨大挑战。对此,文中提出基于改进风电场景削减算法的IES低碳经济调度方法。首先,采用改进的迭代自组织数据分析算法(iterative self-organizing data analysis technique algorithm,ISODATA)对大量历史风电场景进行聚类削减,克服传统聚类算法在聚类中心确定和数据内在特征考虑上的不足。然后,以改进阶梯碳价模型计算碳交易成本,针对含电转气-碳捕集(power to gas and carbon capture system,P2G-CCS)耦合设备的IES,建立以提升其经济性、低碳性为目标的IES优化调度模型。最后,仿真结果表明,该模型在保证系统低碳排放的同时可有效降低综合运行成本。展开更多
在风-火-核-碳捕集多源联合系统中,核电机组在参与电网调峰时存在调峰深度选择不精确的问题。此外,该多源联合系统还存在风电消纳不足的问题。为此,构建了一种计及线性化核电机组调峰深度模型的电转气(power to gas,P2G)-风-火-核-碳捕...在风-火-核-碳捕集多源联合系统中,核电机组在参与电网调峰时存在调峰深度选择不精确的问题。此外,该多源联合系统还存在风电消纳不足的问题。为此,构建了一种计及线性化核电机组调峰深度模型的电转气(power to gas,P2G)-风-火-核-碳捕集多源联合系统,并对该系统进行了日前优化调度。首先,基于核电机组负荷跟踪模式,通过引入连续变量,提高了调峰深度选择的准确性;然后,分析了碳捕集电厂-P2G联合运行模式及需求响应资源对促进风电消纳的积极作用;最后,以系统综合运行成本最低为目标函数,同时考虑碳交易机制,在Matlab平台搭建仿真模型,验证了所构建多源联合系统的有效性。结果表明,相较于核电机组采用固定调峰档位的多源联合系统,所构建的多源联合系统能够在保证核电机组安全稳定运行的同时,实现风电完全消纳,系统碳排放量与综合运行成本分别下降了13.74%与6.27%,提高了系统运行的低碳性与经济性。展开更多
基金supported by National Natural Science Foundation of China(No.51177019,61074100,60974036)Doctoral Fund of Ministry of Education of China(No.20090092110020)and the State Grid Corporation of China
文摘Besides common characteristics of wind power,there are some special characteristics in China power system,including large-scale,long distance transmission and lack of flexible regulating power sources.These special characteristics make power dispatch more challenging in China.Many studies have been carried out and some improvements are presented including wind power monitoring and control as well as evaluation of wind power integration capabilities.As a demonstration project,the technologies are integrated into the energy management system and are implemented in the Northwest China power system.They provide effective measures for wind power dispatch in the grid.
文摘随着风电并网规模的不断增长,其出力不确定性给综合能源系统(integrated energy system,IES)的稳定经济运行带来了巨大挑战。对此,文中提出基于改进风电场景削减算法的IES低碳经济调度方法。首先,采用改进的迭代自组织数据分析算法(iterative self-organizing data analysis technique algorithm,ISODATA)对大量历史风电场景进行聚类削减,克服传统聚类算法在聚类中心确定和数据内在特征考虑上的不足。然后,以改进阶梯碳价模型计算碳交易成本,针对含电转气-碳捕集(power to gas and carbon capture system,P2G-CCS)耦合设备的IES,建立以提升其经济性、低碳性为目标的IES优化调度模型。最后,仿真结果表明,该模型在保证系统低碳排放的同时可有效降低综合运行成本。
文摘在风-火-核-碳捕集多源联合系统中,核电机组在参与电网调峰时存在调峰深度选择不精确的问题。此外,该多源联合系统还存在风电消纳不足的问题。为此,构建了一种计及线性化核电机组调峰深度模型的电转气(power to gas,P2G)-风-火-核-碳捕集多源联合系统,并对该系统进行了日前优化调度。首先,基于核电机组负荷跟踪模式,通过引入连续变量,提高了调峰深度选择的准确性;然后,分析了碳捕集电厂-P2G联合运行模式及需求响应资源对促进风电消纳的积极作用;最后,以系统综合运行成本最低为目标函数,同时考虑碳交易机制,在Matlab平台搭建仿真模型,验证了所构建多源联合系统的有效性。结果表明,相较于核电机组采用固定调峰档位的多源联合系统,所构建的多源联合系统能够在保证核电机组安全稳定运行的同时,实现风电完全消纳,系统碳排放量与综合运行成本分别下降了13.74%与6.27%,提高了系统运行的低碳性与经济性。
