基于静止无功发生器分相控制的电压暂降治理技术  

Voltage sag control technology based on static var generator split-control

作　　者：龚博 赵建阳 刘会巧 Gong Bo;Zhao Jianyang;Liu Huiqiao(China Energy Engineering Group Tianjin Electric Power Design Institute Co.,Ltd,Tianjin 300400;Department of Automation Engineering,Zhonghuan Information College,Tianjin University of Technology,Tianjin 300380)

机构地区：[1]中国能源建设集团天津电力设计院有限公司,天津300400 [2]天津理工大学中环信息学院自动化工程系,天津300380

出　　处：《电气技术》2020年第9期33-38,44,共7页Electrical Engineering

摘　　要：电压暂降会严重影响工业安全生产,特别是导致使用大量变频器的工业生产线停止工作,针对这一问题,本文提出一种基于静止无功发生器分相控制的电压暂降补偿技术。该技术借助于静止无功发生器实时、迅速、精准且具有分相吸收或者发出无功功率的特点,在单相或者多相瞬间接地短路故障或者瞬时相间短路工况时,通过母线工况逻辑分析模块智能选择瞬时故障治理策略,保证电压敏感的电气设备始终能够正常工作,不但保证生产线连续安全运行,而且不会把电压暂降问题延伸到上级电力系统。在Matlab/Simulink环境下,对单相瞬间接地故障、相间瞬时短路两种工况进行仿真,仿真结果证明静止无功发生器可以补偿暂降的电压,并且满足同母线所有用电设备正常运行。Voltage sag will seriously affect the safety of industrial production,especially causes the industrial production line using a large number of inverters to stop working,which is solved by a voltage sag compensation technology based on SVG split phase control technology.With the help of the reactive power absorption or emission characteristics of real-time,rapid,accurate of SVG equipment,the technology can intelligently select the instantaneous fault control strategy through the bus condition logic analysis module when the single-phase or multi-phase instantaneous ground short-circuit fault or instantaneous inter phase short-circuit condition occurs,in order to ensure that the voltage sensitive electrical equipment can always work normally.It ensures the production line connection Continuous safe operation which will not extend the voltage sag problem to the superior power system.By Matlab/Simulink,the simulation of single-phase and phase to phase instantaneous short circuit is carried out.The simulation results show that SVG equipment can compensate the voltage of sag and meet the normal operation of all electrical equipment in the same bus.

关 键 词：电压暂降 静止无功发生器 分相控制 瞬时故障 

分 类 号：TM714.2[电气工程—电力系统及自动化]