铁路牵引变电所的储能功率变换器控制研究
Research on Control of Energy Storage Power Converter in Railway Traction Substation
吴光龙1
作者信息
- 1. 中国铁路兰州局集团有限公司嘉峪关供电段,甘肃 兰州 730000
- 折叠
摘要
针对铁路牵引所供电系统非线性负载下电流质量差影响电网电压的问题,利用功率转换系统(PCS)补偿负载谐波电流.首先在静止坐标系下构建谐波电流误差,在旋转坐标系下用比例积分(PI)控制器建立各次谐波环路,其次利用电流d,q 轴分量参考信号构造实际补偿电流,建立电流控制环路d,q 轴分量之间的解耦环节,然后利用静止坐标系下单电感简化模型,分析各电流控制环路的控制器设计,最后在 30 kVA的微网供电平台上进行实验验证,结果表明所提PCS控制策略能有效补偿负载谐波电流,提升电网电流质量.
Abstract
In order to solve the problem of poor current quality affecting grid voltage under nonlinear loads in railway traction power supply systems,power conversion system(PCS)is used to compensate for load harmonic currents.First-ly,the harmonic current error is constructed in a stationary coordinate system and each harmonic loop is established using a proportional integral(PI)controller in a rotating coordinate system.Secondly,the actual compensation current is constructed using the current d,q component as a reference and a decoupling link between the d,q components of the current control loop is established.Then,a simplified model of a single inductor is used in a stationary coordinate system to analyze the controller design of each current control loop.Finally,experimental verification is conducted on a 30 kVA microgrid power supply platform and the results show that the proposed PCS control strategy can effectively compensate for the load harmonic current.And the quality of the power grid current is improved.
关键词
功率变换器/比例积分控制器/解耦Key words
power converter/proportional integral controller/decoupling引用本文复制引用
出版年
2025
NETL
NSTL
万方数据