摘要
为增强电力电缆局部放电试验的屏蔽系数,降低局部放电的PC量,提出提高工频串联谐振装置高压侧滤波性能的控制系统,该系统可有效提高试验稳定性、去除局部放电谱图毛刺。基于时域功率理论(Fryze-BuchholzDpenbrock method,FBD)电导算法设计的高压静止无功发生装置综合并联无功补偿系统,可以增强电压、电流的跟随特性,达到良好的滤除谐波的效果;同时对整个系统的电容、电感参数进行优化设计,对三相VSC变流器容量进行有效整定,既可使控制系统的补偿性能达到最优,也可使变流器的容量整定处于最小状态。实验仿真和现场进行的电缆局部放电试验证明了整个系统显著地增强了电力电缆局部放电试验的稳定和自适应能力。
In order to enhance the shielding factor and reduce the PC volume of partial discharge（PD） in the PD test of power cable,this paper proposed the control system to improve the high voltage side filter performance of power frequency series resonance equipment,which could effectively improve the stability of the test,and remove the spectrum burr of PD.The integrated parallel reactive power compensation system,which was design by conductance algorithm based on FryzeBuchholz-Dpenbrock method（FBD）,could enhance the following features of voltage and current,and achieve a good harmonic filter effect.Meanwhile,the parameters of capacitance and inductance in whole system were optimized,and the capacity of three-phase VSC converter was effectively tuned,which could not only make the control system achieve optimal compensation performance,but also make the capacity tuning of the converter be in the minimum state.The experimental simulation and the field PD test of power cable prove that the control system can significantly enhance the stability and adaptive ability of the power cable＇s PD test.
出处
《电力建设》
2014年第5期50-55,共6页
Electric Power Construction
基金
国家自然科学基金项目(51174258)
关键词
局部放电
谐振电抗器
时域功率理论
综合并联无功补偿系统
partial discharge（PD）
resonance reactor
Fryze-Buchholz-Dpenbrock method（FBD）
integrated parallel reactive power compensation system
