弱电网下改进LADRC抑制直驱风机次同步振荡研究

针对在弱电网下直驱风电机组引起的次同步振荡(subsynchronous?oscillation,SSO)现象,提出基于一阶总扰动偏差控制的微分前馈线性自抗扰控制器(linear?active?disturbance?rejection?control,LADRC),采用全改进LADRC控制策略抑制SSO现象("全"是指电压外环、电流内环以及PLL锁相环3个环节都采用相应的控制).首先,建立直驱风电机组并网数学模型;其次,结合风电机组并网系统对改进LADRC控制器进行设计并对其进行特性分析,该控制器相较于传统LADRC,不仅减小系统的跟踪误差且抗干扰性能更强;最后,通过PS...

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Published in中国电力 Vol. 56; no. 4; pp. 56 - 67
Main Authors 李博浩, 郭昆丽, 吕家君, 蔡维正, 刘璐豪, 刘凤仪, 郝翊帆
Format Magazine Article
LanguageChinese
Published 西安工程大学 电子信息学院,陕西 西安 710048%南方电网广东电网有限责任公司广州供电局,广东 广州 510620 28.04.2023
Subjects
直驱风电机组
总扰动偏差控制
弱电网
次同步振荡
LADRC
微分前馈
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Abstract 针对在弱电网下直驱风电机组引起的次同步振荡(subsynchronous?oscillation,SSO)现象,提出基于一阶总扰动偏差控制的微分前馈线性自抗扰控制器(linear?active?disturbance?rejection?control,LADRC),采用全改进LADRC控制策略抑制SSO现象("全"是指电压外环、电流内环以及PLL锁相环3个环节都采用相应的控制).首先,建立直驱风电机组并网数学模型;其次,结合风电机组并网系统对改进LADRC控制器进行设计并对其进行特性分析,该控制器相较于传统LADRC,不仅减小系统的跟踪误差且抗干扰性能更强;最后,通过PSCAD/EMTDC仿真软件将本文策略与全PI、全传统LADRC进行仿真对比.结果表明:相较于全传统LADRC,本文方法在降低1.62％超调量的同时,缩短0.129?s系统调节时间,有效抑制SSO现象并且具有较好的适应性.
AbstractList 针对在弱电网下直驱风电机组引起的次同步振荡(subsynchronous?oscillation,SSO)现象,提出基于一阶总扰动偏差控制的微分前馈线性自抗扰控制器(linear?active?disturbance?rejection?control,LADRC),采用全改进LADRC控制策略抑制SSO现象("全"是指电压外环、电流内环以及PLL锁相环3个环节都采用相应的控制).首先,建立直驱风电机组并网数学模型;其次,结合风电机组并网系统对改进LADRC控制器进行设计并对其进行特性分析,该控制器相较于传统LADRC,不仅减小系统的跟踪误差且抗干扰性能更强;最后,通过PSCAD/EMTDC仿真软件将本文策略与全PI、全传统LADRC进行仿真对比.结果表明:相较于全传统LADRC,本文方法在降低1.62％超调量的同时,缩短0.129?s系统调节时间,有效抑制SSO现象并且具有较好的适应性.
Author 刘璐豪
刘凤仪
李博浩
蔡维正
郝翊帆
郭昆丽
吕家君
AuthorAffiliation 西安工程大学 电子信息学院,陕西 西安 710048%南方电网广东电网有限责任公司广州供电局,广东 广州 510620
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LI Bohao
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GUO Kunli
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Issue 4
Keywords 直驱风电机组
总扰动偏差控制
弱电网
次同步振荡
LADRC
微分前馈
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Title 弱电网下改进LADRC抑制直驱风机次同步振荡研究
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