| 引用本文: | 谢惠藩,张尧,邓权帅,林凌雪,钟庆.基于时间最优的快速平息区间扰动的紧急直流功率控制策略[J].控制理论与应用,2009,26(11):1267~1272.[点击复制] |
| Xie Hui-fan,ZHANG Yao,DENG Quan-shuai,LIN Ling-xue,ZHONG Qing.Emergency DC power control strategy for quickly suppressing inter-zone disturbance based on time-optimal control theory[J].Control Theory and Technology,2009,26(11):1267~1272.[点击复制] |
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| 基于时间最优的快速平息区间扰动的紧急直流功率控制策略 |
| Emergency DC power control strategy for quickly suppressing inter-zone disturbance based on time-optimal control theory |
| 摘要点击 1985 全文点击 1230 投稿时间：2008-10-05 修订日期：2008-12-30 |
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| DOI编号 10.7641/j.issn.1000-8152.2009.11.CCTA081063 |
| 2009,26(11):1267-1272 |
| 中文关键词 时间最优控制 紧急直流功率支援 2阶振荡 直流功率调制 |
| 英文关键词 time optimal control emergency DC power support second-order oscillation DC power modulation |
| 基金项目 “十一五”国家科技支撑计划资助项目(2006BAA02A17). |
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| 中文摘要 |
| 为了快速平息交直流互联电网的区间扰动振荡, 基于等值两机两区域系统推导了2阶振荡系统的时间最优紧急直流功率支援控制策略. 首先采用时间最优控制将相点快速驱动到平衡点附近, 然后采用非线性控制对相点进行平衡点镇定控制. 为消除直流功率的跃变和高频非线性“颤振”及防止“超调”现象, 对开关曲线作了改进, 并根据控制相平面推导实现最少次开关切换的直流功率控制量. 最后通过仿真验证了该策略的有效性. |
| 英文摘要 |
| Based on the equivalent-two-machine-two-area AC/DC parallel system, a time optimal control(TOC) plan for a second-order oscillation system is developed and a TOC strategy for quickly suppressing interzone disturbance is proposed. Firstly, the TOC theory is introduced to drive system states to a post-fault equilibrium point, and then, the nonlinear control theory is used to hold the states in that equilibrium point. Switching curve is also improved to avoid
DC power jump-changing and to eliminate high-frequency nonlinear chattering and overshooting, and the optimal amount of DC power controlled by a minimal number of switching is derived. The simulation results show that the proposed
TOC strategy can be combined with the practical DC Emergency Run-up and Run-back control functions to quickly and effectively suppress the interzone oscillation after a first angle swing. |