| 时变时滞电力系统鲁棒稳定性的改进型判据 |
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| 引用本文： | 孙国强,屠越,孙永辉,卫志农,徐泰山,王胜明. 时变时滞电力系统鲁棒稳定性的改进型判据[J]. 电力系统自动化, 2015, 39(3): 59-62 |
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| 作者姓名： | 孙国强 屠越 孙永辉 卫志农 徐泰山 王胜明 |
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| 作者单位： | 1. 河海大学可再生能源发电技术教育部工程研究中心,江苏省南京市,210098
2. 南瑞集团公司 国网电力科学研究院,江苏省南京市,211106 |
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| 基金项目： | 国家自然科学基金;国家电力公司科技项目 |
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| 摘 要： | 针对基于直接法分析电力系统时滞稳定结果存在保守性的问题,构造新型Lyapunov泛函,得到改进的鲁棒稳定性判据,所得结果去除了现有结果对时变时滞可微性及导数的限制,降低了结果的保守性。此外,这些由线性矩阵不等式形式给出的稳定性判据,可通过线性矩阵不等式工具箱进行求解。最后,以单机无穷大系统和WSCC 3机9节点系统为例,计算系统的时滞稳定裕度,仿真结果表明所提方法的有效性和实用性。
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| 关 键 词： | 电力系统 鲁棒稳定 时滞裕度 线性矩阵不等式 |
| 收稿时间： | 2013-12-13 |
| 修稿时间： | 2014-09-09 |
An Improved Robust Stability Criterion for Power Systems with Time-varying Delay |
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| SUN Guoqiang,TU Yue,SUN Yonghui,WEI Zhinong,XU Taishan and WANG Shengming. An Improved Robust Stability Criterion for Power Systems with Time-varying Delay[J]. Automation of Electric Power Systems, 2015, 39(3): 59-62 |
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| Authors: | SUN Guoqiang TU Yue SUN Yonghui WEI Zhinong XU Taishan WANG Shengming |
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| Affiliation: | Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing 210098, China,Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing 210098, China,Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing 210098, China,Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing 210098, China,NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China and NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China |
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| Abstract: | In view of the conservativeness of the stability analysis based on the direct method, an improved robust stability criterion is developed. A novel Lyapunov functional is constructed. With the restrictions on the differentiability and the derivative of time-varying delay removed, the conservativeness is reduced. Furthermore, the results obtained that are formulated in the form of linear matrix inequalities (LMI) can be effectively solved using the LMI toolbox. Finally, the single machine system and WSCC 3-generator-9-bus system are employed to calculate the delay margin. The effectiveness and practicality of the method proposed is verified by simulation results. |
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| Keywords: | power systems robust stability delay margin linear matrix inequality |
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