摘要
提出一种可用于直流电容取能式串联电能质量调节器(series power quality regulator,SPQR)的阶段式补偿控制策略。该补偿策略分为稳定运行、超限运行及恢复运行3个阶段,提出针对各阶段分别采用完全补偿、最小能量补偿及最大能量补偿策略。采用负荷电压及滤波电容电流双闭环控制策略对各阶段进行控制,并对稳定运行阶段增加了直流电容电压调整控制。为保证各阶段切换时的稳定,提出综合利用直流电容电压及系统电压幅值作为判据的切换控制策略。利用EMTDC/PSCAD对所提出的补偿控制策略进行仿真验证,仿真结果表明5:阶段式补偿控制策略能够补偿系统的稳态及暂态电压扰动,并能够保证装置的持续在线运行。
A new stages compensation and control strategy suitable for series power quality regulator （SPQR） supplied by DC-capacitor was proposed. Three compensation stages which were stable operation stage, overrun operation stage and recovery operation stage were included in the strategy. The pre-sag voltage compensation strategy, minimum energy compensation strategy and maximum energy compensation strategy were presented to the three stages separately. The double closed-loop control strategy with load voltage and filter capacitor current was used in each stage. Besides, the DC-capacitor voltage regulation control was used in the stable stage. To keep stability of the switching period, a criterion based on both of the DC-capacitor voltage magnitude and source-side voltage magnitude was proposed. The simulation results of EMTDC/PSCAD show that the both of the steady-state and transient-state voltage disturbances could be compensated and the equipment＇s on-line operation could be realized by the proposed strategy.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第28期100-106,共7页
Proceedings of the CSEE
基金
"十一五"国家科技支撑计划重大项目(2007BAA12B03)~~
关键词
串联型电能质量调节器
补偿策略
最大能量补偿
直流电容电压控制
阶段式控制
series power quality regulator （SPQR）
compensation strategy
maximum energy compensation
DC-capacitor voltage control
stages control
