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This paper summarizes the National Land Use Change Detection Program, the present situation in remote sensing techniques and applications for land management in China. Special attention is given to the recent results that have been achieved in remote sensing applications, such as land use database updating, verification of land use planning, etc. The paper also touches upon the future trends of developing...
Singular value decomposition method is effective for voltage stability analysis of the AC power system. It is applied to analyze the voltage stability of AC/DC hybrid transmission systems in this paper. The influences of DC control modes and load static characteristics on voltage stability are taken into account. The two-terminal DC system is taken as an example to deduce the computation formulas...
The global energy crisis and environmental concerns have been significantly increasing the pressure for cleaner and more efficient generation of electricity. With the social economic development, power supply and demand keeps on increasing. For sustainable developing, the power industry has actively developed the renewable energy while raising the utilization efficiency of conventional energy in China...
An adaptive fuzzy voltage dependent current order limiter (VDCOL) to enhance the performance of a multi-feed-in HVDC system is proposed in this paper. The adaptive fuzzy VDCOL exports an adaptive current order through fuzzy rules which need one point's voltage of HVDC transmission line and its derivative to time. The study of a MDDC model shows that not only the adaptive fuzzy VDCOL strategy can lead...
With the acceleration of smart grid construction, Distributed Generation (DG) integration technology needs to be developed urgently. Reactive power optimization including windfarm is studied, and the variability and intermittency of wind speed is considered in this paper. The multi-objective reactive power optimization model including network loss, average deviation of voltage and stability margin...
Smart Grid will be a new way to the development of the power network. In the development of Smart Grid, how to integrate the Renewable Energy and the Distributed generation (DG) safely and reliably is a problem urgent to be solved. Siting and sizing of DG planning in Smart Grid construction are researched in this paper. A multi-objective optimal model is established and normalized in the DG number,...
A coherent groups recognition method using fuzzy clustering method based on A-K networks is proposed. Firstly, a fuzzy similarity matrix is formed by applying maximum-minimum algorithm. Then the A-K networks are trained with each row of the fuzzy similarity matrix as inputs. The nerves of output layer which win ultimately represent different dynamic styles. Finally, it is tested on the EPRI-36 bus...
With the wide application of flexible AC transmission system (FACTS) controllers in power system, the researches have been interested in on interaction among FACTS controllers, on interaction between FACTS controller and power system. This interaction can bring negative influence on the reliability of system. With technical development, power electronics devices, such as GTO, IGCT and IGBT, have been...
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