| 引用本文: | 郑重,李卫华,耿华,杨耕.火电厂辅机变频器低电压穿越技术综述[J].电力自动化设备,2016,36(12): |
| ZHENG Zhong,LI Weihua,GENG Hua,YANG Geng.Review of LVRT technology for auxiliary equipment inverter of thermal power plant[J].Electric Power Automation Equipment,2016,36(12): |
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| 摘要: |
| 随着变频技术在火电厂辅机驱动中的广泛应用，为了确保电压跌落情况下火电机组自身及电网的安全稳定运行，提高辅机变频器的低电压穿越(LVRT)能力显得尤为重要。首先，分析了电源电压跌落对火电厂辅机变频器的影响，并介绍了目前最新的火电厂辅机变频器LVRT技术规范；然后，系统性地总结和评价了国内外现有的各种LVRT技术；最后，参照风电机组LVRT技术的发展历程，对火电厂辅机变频器LVRT技术未来的发展方向进行了展望。 |
| 关键词: 火力发电 辅机变频器 电压跌落故障 低电压穿越 |
| DOI：10.16081/j.issn.1006-6047.2016.12.022 |
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| 基金项目: |
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| Review of LVRT technology for auxiliary equipment inverter of thermal power plant |
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ZHENG Zhong1, LI Weihua1, GENG Hua2, YANG Geng2
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1.North China Electric Power Research Institute Co.,Ltd.,Beijing 100045, China;2.Department of Automation, Tsinghua University, Beijing 100084, China
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| Abstract: |
| As the converter technique is widely used to the motor driving of auxiliary equipments in thermal power plants, the LVRT(Low-Voltage Ride-Through) ability of auxiliary equipment inverter should be particularly improved for the safe and stable operation of both thermal power plant and power grid during the voltage dip. The impact of generator voltage dip on the auxiliary equipment inverter of thermal power plant is analyzed and the latest technical specifications of LVRT for the auxiliary equipment inverter of thermal power plant are introduced. The existing domestic and foreign LVRT technologies are summarized and evaluated systematically. With the reference to the development of LVRT technology for wind turbine generator, the future development direction of LVRT technology for the auxiliary equipment inverter of thermal power plant is prospected. |
| Key words: thermal power generation auxiliary equipment inverter voltage dip fault low-voltage ride-through |
