| 特高压直流输电工程换流单元在线投入控制策略的选择 |
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| 引用本文： | 穆清,王明新,曾南超,蒋卫平,王华伟.特高压直流输电工程换流单元在线投入控制策略的选择[J].电网技术,2011(4):8-13. |
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| 作者姓名： | 穆清 王明新 曾南超 蒋卫平 王华伟 |
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| 作者单位： | 中国电力科学研究院; |
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| 摘 要： | 特高压直流输电系统换流单元在线投退过程中,控制方法对特高压直流输电的暂态响应特性影响很大。为了克服传统直流控制器在换流单元在线投入过程中出现暂态特性不符合要求的现象,如超调量过大、过渡时间过长等,提出了2种不同的控制策略。首先,使用一种新的模型辨识法把换流单元转变成一个单输入单输出模型;其次,把传统整流站的控制器离散化;最后将单输入单输出模型和离散的控制器模型连接起来,得到一个整体的换流器仿真和参数优化的模型,并使用一种全新的参数优化的方法,改善了整体换流单元模型的暂态特性。通过在EMTDC环境下对参数适当调整,得到了合适的控制方案,同时也证明了整个仿真步骤的正确性。
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| 关 键 词： | 特高压直流输电 换流单元在线投入 控制策略 参数优化 |
Selection of Control Strategy for On-Line Deblocking of Converter Units Used in UHVDC Power Transmission Project |
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| MU Qing,WANG Mingxin,ZENG Nanchao,JIANG Weiping,WANG Huawei.Selection of Control Strategy for On-Line Deblocking of Converter Units Used in UHVDC Power Transmission Project[J].Power System Technology,2011(4):8-13. |
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| Authors: | MU Qing WANG Mingxin ZENG Nanchao JIANG Weiping WANG Huawei |
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| Affiliation: | MU Qing,WANG Mingxin,ZENG Nanchao,JIANG Weiping,WANG Huawei(China Electric Power Research Institute,Haidian District,Beijing 100192,China) |
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| Abstract: | During the process of on-line blocking and de-blocking of converter units used in ultra high voltage direct current(UHVDC) power transmission project,the control strategy greatly impacts on transient response characteristics of UHVDC power transmission.To remedy the phenomena that transient characteristics that does not conform to the requirement appear during the on-line de-blocking of converter units,such as to high overshoot,to long transient duration and so on,two different control strategies are propos... |
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| Keywords: | ultra high voltage direct current(UHVDC) power transmission on-line deblocking of converter units control strategy parameter optimization |
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