| 一种利用VSC-HVDC提高发电机阻尼的新控制策略 |
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| 引用本文： | 陈蔓,陆继明,毛承雄,胡兆庆.一种利用VSC-HVDC提高发电机阻尼的新控制策略[J].电网技术,2006,30(9):62-67. |
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| 作者姓名： | 陈蔓 陆继明 毛承雄 胡兆庆 |
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| 作者单位： | 华中科技大学,电气与电子工程学院,湖北省,武汉市,430074 |
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| 基金项目： | 教育部优秀青年教师资助计划 |
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| 摘 要： | 在交直流混合输电系统中,可以利用直流系统的功率调制来提高交流系统的运行稳定性。文章在建立含有VSC-HVDC的交直流混合输电系统模型的基础上,提出了一种新的VSC-HVDC混合功率调制方法来提高发电机阻尼,该方法利用Bang-bang控制原理设计混合调制信号,并将其加入到常规的PI调节器中。仿真结果表明,加入混合调制信号可以增强系统的阻尼并有效地抑制振荡,能够改善系统在各种扰动下的动态性能。
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| 关 键 词： | NULL |
| 文章编号： | 1000-3673(2006)09-0062-06 |
| 收稿时间： | 2006-01-16 |
| 修稿时间： | 2006年1月16日 |
A New Control Strategy Using VSC-HVDC to Improve Generator Damping |
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| CHEN Man,LU Ji-ming,MAO Cheng-xiong,HU Zhao-qing.A New Control Strategy Using VSC-HVDC to Improve Generator Damping[J].Power System Technology,2006,30(9):62-67. |
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| Authors: | CHEN Man LU Ji-ming MAO Cheng-xiong HU Zhao-qing |
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| Affiliation: | College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan430074, HubeiProvince, China |
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| Abstract: | In AC/DC hybrid power system, DC power modulation is often used to improve the stability of AC power system. Here, a model of AC/DC hybrid power system including VSC-HVDC system is established; on this basis a new method of hybrid power modulation for VSC-HVDC system is proposed to enhance generator damping. In the proposed method the hybrid modulation signals are designed by using Bang-bang control theory and are added to conventional PI regulator. The simulation results show that, with the hybrid modulation signals, the system damping can be strengthened and oscillation can be restrained effectively, so the dynamic performance of AC/DC hybrid power system under different disturbances can be improved. |
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| Keywords: | power system AC/DC hybrid power system VSC-HVDC generator damping Bang-bang control hybrid modulation PI regulator |
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