摘要
基于电磁暂态仿真软件PSCAD建立了采用开环、恒压频比控制方式的变频拖动设备仿真模型,在所搭建模型的基础上研究当网侧电压、频率波动以及系统控制参数改变时变频拖动设备的负荷特性,并根据仿真结果建立其静态负荷模型。仿真结果表明变频拖动设备表现出不同于常规异步电动机的负荷特性,大量并网会对电网造成无功冲击,电网规划需针对其进行无功补偿。
Based on magnetic transient simulation software PSCAD,simulation model for variable frequency drive equipment using control modes of open loop and constant voltage frequency ratio was established.On the basis of the model,load characteristic of the variable frequency drive equipment was studied when grid side voltage,frequency vibration and control parameters of the system were changed.According to simulation results,static load model was established.Simulation results indicate that the variable frequency drive equipment acts out load characteristic different from conventional asynchronous motor and great deal of grid-connection may cause reactive power impact on the power grid,thus reactive compensation should be considered in power system planning.
出处
《广东电力》
2015年第7期68-71,77,共5页
Guangdong Electric Power
基金
国家自然科学基金资助项目(51377021)
国家科技支撑计划重大项目(2013BAA01B00)
关键词
变频拖动设备
并网
静态负荷模型
功率
无功功率
variable frequency drive equipment
grid-connection
static load model
power
reactive power
