| HVDC与发电机励磁的非线性综合控制策略 |
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| 引用本文： | 鲜艳霞,李兴源.HVDC与发电机励磁的非线性综合控制策略[J].电网技术,2004,28(14):32-35. |
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| 作者姓名： | 鲜艳霞 李兴源 |
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| 作者单位： | 四川大学电气信息学院,四川省,成都市,610065 |
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| 摘 要： | 提出了一种用于改善交直流混联系统暂态稳定性的非线性控制策略,具体做法是通过建立高压直流输电(HVDC)与发电机组成的综合系统模型,应用最优变目标控制(OVAC)理论推导出了HVDC与发电机励磁的非线性综合控制策略.该控制策略首先驱动系统到达按最大稳定域选择的人工中间稳定平衡点,然后才驱动系统到达期望的稳定平衡点.仿真实验结果表明,该控制策略能够较好地提高交直流互联系统的暂态稳定性.
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| 关 键 词： | 高压直流输电 励磁控制 最优变目标控制:电力系统暂态稳定性 |
| 文章编号： | 1000-3673(2004)14-0032-04 |
| 修稿时间： | 2004年3月19日 |
A COMPREHENSIVE NONLINEAR CONTROL STRATEGY OF HVDC AND GENERATOR EXCITATION |
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| XIAN Yan-xia,LI Xing-yuan School of Electrical and Information,Sichuan University,Chengdu ,Sichuan Province,China.A COMPREHENSIVE NONLINEAR CONTROL STRATEGY OF HVDC AND GENERATOR EXCITATION[J].Power System Technology,2004,28(14):32-35. |
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| Authors: | XIAN Yan-xia LI Xing-yuan School of Electrical and Information Sichuan University Chengdu Sichuan Province China |
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| Affiliation: | XIAN Yan-xia,LI Xing-yuan School of Electrical and Information,Sichuan University,Chengdu 610065,Sichuan Province,China |
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| Abstract: | A nonlinear control strategy to improve the
transient stability of AC/DC systems is presented. On the basis
of establishing a comprehensive system model constituted by
generators and applying the theory of optimal variable aim
control (OVAC), a comprehensive nonlinear control strategy
for HVDC and generator excitation is deduced. At first, this
system is driven by this control strategy to reach the artificial
medial equilibrium point which is selected according to
maximum stability domain, then the system is driven to the
expected equilibrium point. The simulation results show that
the transient stability of AC/DC system can be effectively
improved by use of the presented control strategy. |
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| Keywords: | HVDC Excitation control OVAC Power system transient stability |
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