| 引用本文: | 杨文莉,马俊鹏,孙瑞婷,王顺亮,赵静波,刘天琪.基于扰动电压定向的自适应电流源侵入式序阻抗测量[J].电力自动化设备,2022,42(12): |
| YANG Wenli,MA Junpeng,SUN Ruiting,WANG Shunliang,ZHAO Jingbo,LIU Tianqi.Intrusive sequence impedance measurement of adaptive current source based on disturbance voltage orientation[J].Electric Power Automation Equipment,2022,42(12): |
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| 摘要: |
| 变流器宽频阻抗特性复杂、待测系统谐振点难以预测，增加了阻抗测量难度。为精确且稳定地实测变流器输出阻抗，提出了一种基于扰动电压定向的自适应电流源侵入式序阻抗测量方法。通过扰动电压定向控制，结合所提出的抗饱和策略，有效地实现了扰动电流自适应调整。结合阻抗测量装置的可测阻抗范围，优化设计了抗饱和策略的控制参数。仿真和实验结果表明，所提控制方法既可有效避免待测系统固有谐振点诱发的阻抗测量装置调制饱和问题，又能规避待测系统在测量过程中的潜在失稳风险。 |
| 关键词: 阻抗测量 扰动电流 自适应控制 扰动电压定向 谐振点 |
| DOI：10.16081/j.epae.202204043 |
| 分类号:TM46;TM712 |
| 基金项目:国网江苏省电力有限公司科技项目(J2021009) |
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| Intrusive sequence impedance measurement of adaptive current source based on disturbance voltage orientation |
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YANG Wenli1, MA Junpeng1, SUN Ruiting1, WANG Shunliang1, ZHAO Jingbo2, LIU Tianqi1
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1.College of Electrical Engineering, Sichuan University, Chengdu 610065, China;2.Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103, China
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| Abstract: |
| The broadband impedance characteristics of converter are complex and the resonance point of the system under test is difficult to predict, which increases the difficulty of impedance measurement. For measuring converter’s output impedance accurately and stably, intrusive sequence impedance measurement of adaptive current source based on disturbance voltage orientation is proposed. The disturbance current adaptive regulation is effectively realized by the disturbance voltage orientation control combining with the anti-saturation strategy. And the parameters of anti-saturation strategy are optimally designed combining with the range of measurable impedance of impedance measurement device. Simulative and experimental results show that the proposed control method can not only effectively avoid the modulation saturation problem of the impedance measurement device induced by the inherent resonance points of the system under test, but also avoid the potential instability risk of the system under test during the measurement process. |
| Key words: impedance measurement disturbance current adaptive control disturbance voltage orientation resonance point |
