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Global asymptotic stability of a class of nonlinear systems with parametric uncertainty

Journal of systems Engineering and Electronics 2009年第1期20卷 168-171页

作者： Cai Xiushan Lu Ganyun Zhang Changjiang He Xiuhui Coll. of Mathematics Physics and Information Engineering Zhejiang Normal Univ. Jinhua 321004 P. R. China

Stability of a class of nonlinear systems with parametric uncertainty is dealt with. This kind of systems can be viewed as feedback interconnection systems. By constructing the Lyapunov function for one of the feedback interconnection systems, the Lyapunov function for this kind of systems is obtained. Sufficient conditions of global asymptotic stability for this class of systems are deduced. The simulation shows the effectiveness of the method.

关键词： interconnection system Lyapunov functions parametric uncertainty stability.

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On units combination and commitment optimization for electric power production

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Journal of systems Engineering and Electronics 2004年第1期15卷 12-18页

作者：谭忠富何永秀 NorthChinaElectricPowerUniversity Beijing102206P.R.China

Electric power system is one of the most important and complex engineering in modern society, supplying main and general power for social production and social life. Meanwhile, since it is a productive system with both high input and output, it has an obvious economic significance to improve its operating efficiency. For an example, an unit is 10 GW scale, if its standard coal consumption can be decreased with 1 g/kW·h, it can save about 5 000 tons standard coal per year. It will be discussed mainly that how to establish optimization model and its numerical algorithm for operating management of the electric power system. The idea on establishing optimization model is how to dispatch work state of units or power plants, so that total cost of fuel consumption for generation is reduced to the minimum. Here the dispatch is to decide which unit or plant to operate, which unit or plant to stop running, how much power should be generated for those operating units or plants at each given time interval.

关键词： units combination units commitment optimization plants combination interconnection system

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