电热能源系统模型维度高将会导致求解难度较大。为此,提出一种兼具求解速度与隐私性的复杂供热管网等值简化模型。首先,基于热网拓扑结构特点,提出可对供热管网进行灵活化简的供热管网拓扑简化方法,并根据简化后的管道结构和参数建立复...电热能源系统模型维度高将会导致求解难度较大。为此,提出一种兼具求解速度与隐私性的复杂供热管网等值简化模型。首先,基于热网拓扑结构特点,提出可对供热管网进行灵活化简的供热管网拓扑简化方法,并根据简化后的管道结构和参数建立复杂供热管网等值简化模型。其次,充分考虑热电联产(combined heat and power,CHP)机组以热定电模式和热网热惯性对旋转备用容量的影响,建立了系统旋转备用模型。基于此,建立了考虑旋转备用约束的电热能源系统调度模型。最后,采用信息间隙决策理论(information gap decision theory, IGDT)处理系统成本与风电不确定度之间的关系。算例结果分析了供热管网拓扑简化方法在不同简化程度下的简化效果,验证了所提模型适用于电热能源系统优化调度,有效地减少优化模型的求解时间。展开更多
Although some indica rice varieties have already been transformed by Agrobacterium,there is still great demand of developing transformation system for economically important indica varieties.Here,a fast and efficient ...Although some indica rice varieties have already been transformed by Agrobacterium,there is still great demand of developing transformation system for economically important indica varieties.Here,a fast and efficient method of Agrobacterium-mediated transformation for indica rice was developed,and an NcGDH transgenic genic male-sterile(GMS)indica rice 628S was generated using this method.The regenerated transgenic plantlets can be obtained within three months,and the transformation efficiency achieved about 17%.NcGDH transgenic 628S exhibited an enhanced capacity of ammonium assimilation and more effective panicles under low nitrogen conditions.Moreover the hybrid rice lines generated by NcGDH transgenic 628S showed 8%-27%yield advantage than those by the non-transgenic 628S.Taken together,these results provide an efficient transfbnnation method for indica rice and an opportunity to improve nitrogen use efficiency(NUE)and the heterosis of hybrid rice.展开更多
文摘电热能源系统模型维度高将会导致求解难度较大。为此,提出一种兼具求解速度与隐私性的复杂供热管网等值简化模型。首先,基于热网拓扑结构特点,提出可对供热管网进行灵活化简的供热管网拓扑简化方法,并根据简化后的管道结构和参数建立复杂供热管网等值简化模型。其次,充分考虑热电联产(combined heat and power,CHP)机组以热定电模式和热网热惯性对旋转备用容量的影响,建立了系统旋转备用模型。基于此,建立了考虑旋转备用约束的电热能源系统调度模型。最后,采用信息间隙决策理论(information gap decision theory, IGDT)处理系统成本与风电不确定度之间的关系。算例结果分析了供热管网拓扑简化方法在不同简化程度下的简化效果,验证了所提模型适用于电热能源系统优化调度,有效地减少优化模型的求解时间。
基金supported by the National Science Foundation of China(Grant Nos.31571635 and 31871595)Hunan Provincial Important Science and Technology Specific Projects(Grant No.2018NK1010)+2 种基金Natural Science Foundation of Hunan Province,China(Grant No.2020JJ4004)Public Subject of State Key Laboratory of Hybrid Rice(Hunan Hybrid Rice Research Center)(Grant No.2019KF02)China Postdoctoral Science Foundation(Grant No.2020M682561).
文摘Although some indica rice varieties have already been transformed by Agrobacterium,there is still great demand of developing transformation system for economically important indica varieties.Here,a fast and efficient method of Agrobacterium-mediated transformation for indica rice was developed,and an NcGDH transgenic genic male-sterile(GMS)indica rice 628S was generated using this method.The regenerated transgenic plantlets can be obtained within three months,and the transformation efficiency achieved about 17%.NcGDH transgenic 628S exhibited an enhanced capacity of ammonium assimilation and more effective panicles under low nitrogen conditions.Moreover the hybrid rice lines generated by NcGDH transgenic 628S showed 8%-27%yield advantage than those by the non-transgenic 628S.Taken together,these results provide an efficient transfbnnation method for indica rice and an opportunity to improve nitrogen use efficiency(NUE)and the heterosis of hybrid rice.
