大规模弱抗扰新能源孤网接入柔性直流输电系统(Voltage Source Converter Based High Voltage Direct Current,VSC-HVDC)时,换流站稳态运行范围需考虑新能源集群安全运行的要求。基于新能源集群与送端换流站等值系统,研究了考虑新能源...大规模弱抗扰新能源孤网接入柔性直流输电系统(Voltage Source Converter Based High Voltage Direct Current,VSC-HVDC)时,换流站稳态运行范围需考虑新能源集群安全运行的要求。基于新能源集群与送端换流站等值系统,研究了考虑新能源集群孤网接入的柔直电网换流站稳态运行区间约束条件,分析了联结变压器分接头位置、柔直交流电压设定值、新能源集群与柔直送端换流站等效距离的阻抗特性对稳态运行区间的影响,为新能源-柔直孤网系统的换流站稳定运行范围确定提供了可行方法。计算结果表明,当调节联结变压器分接头时,换流站稳态运行区间随分接头上移而向下移动;当改变柔直交流电压参考值时,稳态运行范围随着参考电压升高而向下移动;当改变等效线路阻抗特性,电气距离增加运行范围缩小,阻抗比减小,输送大功率时运行范围变大。展开更多
The Charter bodies established under the United Nations Charter and the treaty bodies established on the basis of international human rights treaties constitute the two major means of supervising the implementation of...The Charter bodies established under the United Nations Charter and the treaty bodies established on the basis of international human rights treaties constitute the two major means of supervising the implementation of international human rights treaties.The treaty bodies responsible for monitoring the implementation of international human right treaties have gradually formed a four-fold supervision system consisting of state reporting,inter-state complaints,individual complaints and inquiry procedures.These quasi-judicial procedures are responsible for overseeing the implementation of international human right treaties.The practice of treaty body procedures has profoundly affected the development of modern international human rights law and is promoting the improvement of international human right treaty monitoring mechanisms.But due to the constraints of international politics,economic structure and related historical conditions,treaty bodies still face severe challenges.The improvement of the four major procedures will promote the development of the international human rights cause.展开更多
文摘大规模弱抗扰新能源孤网接入柔性直流输电系统(Voltage Source Converter Based High Voltage Direct Current,VSC-HVDC)时,换流站稳态运行范围需考虑新能源集群安全运行的要求。基于新能源集群与送端换流站等值系统,研究了考虑新能源集群孤网接入的柔直电网换流站稳态运行区间约束条件,分析了联结变压器分接头位置、柔直交流电压设定值、新能源集群与柔直送端换流站等效距离的阻抗特性对稳态运行区间的影响,为新能源-柔直孤网系统的换流站稳定运行范围确定提供了可行方法。计算结果表明,当调节联结变压器分接头时,换流站稳态运行区间随分接头上移而向下移动;当改变柔直交流电压参考值时,稳态运行范围随着参考电压升高而向下移动;当改变等效线路阻抗特性,电气距离增加运行范围缩小,阻抗比减小,输送大功率时运行范围变大。
基金funded by the 2016 Shanghai Philosophy and Social Science Program(No:2016WJW005).
文摘The Charter bodies established under the United Nations Charter and the treaty bodies established on the basis of international human rights treaties constitute the two major means of supervising the implementation of international human rights treaties.The treaty bodies responsible for monitoring the implementation of international human right treaties have gradually formed a four-fold supervision system consisting of state reporting,inter-state complaints,individual complaints and inquiry procedures.These quasi-judicial procedures are responsible for overseeing the implementation of international human right treaties.The practice of treaty body procedures has profoundly affected the development of modern international human rights law and is promoting the improvement of international human right treaty monitoring mechanisms.But due to the constraints of international politics,economic structure and related historical conditions,treaty bodies still face severe challenges.The improvement of the four major procedures will promote the development of the international human rights cause.
