基于负载设备灵敏度的电压跌落补偿策略优化  

Optimal Compensation Strategy of Voltage Sag Based on the Load Device Sensitivity

作　　者：禹龙基 吕广强[1] 

机构地区：[1]南京理工大学自动化学院,南京210096

出　　处：《电力与能源》2016年第6期699-703,共5页Power & Energy

摘　　要：针对传统同相补偿策略无法应用于对相位跳变敏感的负载电压跌落补偿问题,提出了一种优化补偿策略。通过对负载数学模型进行电压跌落的耐受测试,提取出负载对电压相位跳变角的容忍度,以此作为相位修正的阈值。当补偿电压相位与系统电压相位差达到阈值时,进行补偿相位更新,从而避免了因相位角偏移过大引起的负载运行故障。通过实验验证了该策略的可行性,相比传统的同相补偿而言,提升了对敏感负载的适用范围。In view of the fact that the traditional in-phase compensation can＇t be used to protect the load which is sensitive to the phase jump when the voltage sag occurs, an optimization compensation strategy is proposed. By performing the voltage sag test with a mathematical model of the load, the tolerance of the load to the volt- age phase transition angle is extracted, which is used as the threshold of the phase correction. When the threshold difference between the compensation phase and the system voltage phase is reached, phase compen- sation will be refreshed, which is effective to avoid the load malfunction because of the phase angle skewing. The experimental results verify the feasibility of this strategy which can promote the applicable scope for the sensitive load when comoared to the traditional in-phase compensation.

关 键 词：同相补偿 负载灵敏度 相位修正 补偿策略 

分 类 号：TM761[电气工程—电力系统及自动化]