摘要
当大幅调节LCC直流输电有功功率时,须计及各无功补偿设备在响应时间上的滞后性和时间尺度上的差异性。在各无功控制设备时间尺度分析的基础上,给出了带时间轴的直流输送有功控制域的刻画方法及域内最优调整曲线的计算方法,算例分析结果表明,只有直流有功功率调整曲线位于该域内时,才可保证稳态下可靠的无功平衡,该方法提高了无功补偿的控制自主性和安全裕度可视性。
When the active power of LCC-HVDC adjusted substantially the hysteresis of response time and the difference of time scale ofreactive power compensation equipment should be considered.This paper gave a method to characterize the active power control region ofHVDC with the time axis and to adjust the optimal curve in the region based on the time scale analysis of reactive power control equipment.The calculating-example analysis shows that only when the DC active power adjustment curve was in the region,the reliable reactive powerbalance could be ensured in steady state.This method improves the control autonomy of reactive power compensation and the visibility ofsecurity margin.
作者
陈晖
CHEN Hui(School of Electrical Engineering, Southeast University, Nanjing 210096, China)
出处
《电工电气》
2017年第10期12-16,共5页
Electrotechnics Electric
关键词
无功平衡
时间尺度
LCC直流输电
控制域
无功补偿
reactive power balance
time scale
LCC-HVDC
control region
reactive power compensation
