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中文摘要：
为了分析，在 WAMS (宽区域测量系统) 的环境驱动系统稳定性，有变化时间的延期的一个新稳定的州的稳定性模型为力量被建议系统。有延期的 exciter 和力量系统 stabilizer 的因素被介绍进分析模型。到稳定性分析的减少稳当，改进 Lyapunov-Krasovskii 功能被构造，然后一个新延期依赖者为力量系统的稳定的州的稳定性标准，克服特征值计算方法的劣势，被导出。建议模型和标准在 synchronousmachine 上被测试无限公共汽车的力量系统。测试结果表明功能的基于的力量系统稳定性分析方法是的那 Lyapunov-Krasovskii 在时间延期力量的分析适用、有效系统稳定性。
英文摘要：
In order to analyze power system stability in environment of WAMS （wide area measurement system）, a new steady state stability model with time-varying delay was proposed for power system. The factors of exciter and power system stabilizer with delay were introduced into analytical model. To decrease conservativeness of stability analysis, an improved Lyapunov-Krasovskii functional was constructed, and then a new delay-dependent steady state stability criterion for power system, which overcomes the disadvantages of eigenvalue computation method, was derived. The proposed model and criterion were tested on synchronousmachine infinite-bus power system. The test results demonstrate that Lyapunov-Krasovskii functional based power system stability analysis method is applicable and effective in the analysis of time delay power system stability.
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