The grid connection of a large-scale wind farm could change the load flow/configuration of a power system and introduce dynamic interactions with the synchronous generators(SGs),thus affecting system small-signal angu...The grid connection of a large-scale wind farm could change the load flow/configuration of a power system and introduce dynamic interactions with the synchronous generators(SGs),thus affecting system small-signal angular stability.This paper proposes an approach for the separate examination of the impact of those affecting factors,i.e.,the change of load flow/configuration and dynamic interactions brought about by the grid connection of the wind farm,on power system smallsignal angular stability.Both cases of grid connection of the wind farm,either displacing synchronous generators or being directly added into the power system,are considered.By using the proposed approach,how much the effect of the change of load flow/configuration brought about by the wind farm can be examined,while the degree of impact of the dynamic interaction of the wind farm with the SGs can be investigated separately.Thus,a clearer picture and better understanding of the power system small-signal angular stability as affected by grid connection of the large-scale wind farm can be achieved.An example of the power system with grid connection of a wind farm is presented to demonstrate the proposed approach.展开更多
静止无功补偿装置(State Var Compensator,SVC)电压调节器的增益影响其响应速度和稳定性。在详细调研国内外输电系统SVC应用背景和技术路线基础上,重点研究了输电系统复杂变化对SVC电压调节器的影响,分析和总结了适用于输电系统SVC电压...静止无功补偿装置(State Var Compensator,SVC)电压调节器的增益影响其响应速度和稳定性。在详细调研国内外输电系统SVC应用背景和技术路线基础上,重点研究了输电系统复杂变化对SVC电压调节器的影响,分析和总结了适用于输电系统SVC电压调节器增益控制方法,提出一种基于闭环积分控制的增益自适应控制方法。增益自适应控制能够在系统运行方式变化或电压调节器输出持续振荡时对电压调节器的增益进行适当调整。通过RTDS仿真试验验证了该方法的有效性。该方法具有便于实现、快速抑制振荡、优化增益改善动态响应特性及适用范围广等优越性。展开更多
基金supported by the National Basic Research Program of China (973 Program) (2012CB215204)the key project of the SKLAEPS and the international collaborative project jointly funded by the NSFC (51311122) Chinathe EPSRC,UK.
文摘The grid connection of a large-scale wind farm could change the load flow/configuration of a power system and introduce dynamic interactions with the synchronous generators(SGs),thus affecting system small-signal angular stability.This paper proposes an approach for the separate examination of the impact of those affecting factors,i.e.,the change of load flow/configuration and dynamic interactions brought about by the grid connection of the wind farm,on power system smallsignal angular stability.Both cases of grid connection of the wind farm,either displacing synchronous generators or being directly added into the power system,are considered.By using the proposed approach,how much the effect of the change of load flow/configuration brought about by the wind farm can be examined,while the degree of impact of the dynamic interaction of the wind farm with the SGs can be investigated separately.Thus,a clearer picture and better understanding of the power system small-signal angular stability as affected by grid connection of the large-scale wind farm can be achieved.An example of the power system with grid connection of a wind farm is presented to demonstrate the proposed approach.
文摘静止无功补偿装置(State Var Compensator,SVC)电压调节器的增益影响其响应速度和稳定性。在详细调研国内外输电系统SVC应用背景和技术路线基础上,重点研究了输电系统复杂变化对SVC电压调节器的影响,分析和总结了适用于输电系统SVC电压调节器增益控制方法,提出一种基于闭环积分控制的增益自适应控制方法。增益自适应控制能够在系统运行方式变化或电压调节器输出持续振荡时对电压调节器的增益进行适当调整。通过RTDS仿真试验验证了该方法的有效性。该方法具有便于实现、快速抑制振荡、优化增益改善动态响应特性及适用范围广等优越性。
