Study on the losses location of transmission system based on power tracing;

A new power tracing method using graph theory is introduced,which is based on the adjacency matrix and path matrix of the digraph of load flow solution.

Introduction was made to a kind of applicable simulation model of photovoltaic cells,analyzing the advantage and disadvantage of maximum power point tracking algorithm.

In this paper,based on the wind turbine characteristics,a method of maximum power point tracking is proposed.

Cost analysis of electric power purchase node based on power dependency trace;

To improve the performance of the maximum power point tracking(MPPT) control of the wind energy generation system(WEGS) with direct-driven permanent magnet synchronous generators(PMSG),the principle of MPPT control of the WEGS using optical characteristic curve was explained according to wind turbine output characteristics.

Studied the output features of photovoltaic(PV) array,set up a versatile PV array simulation model under Matlab environment,selected BOOST electric circuit,used maximum power point tracking control method and achieved maxi-mum power point tracking and output voltage stability through S-function.

The application of geometry sketchpad tracking function in a dynamic-displayed surface generating process has been discussed and the courseware making method to the dynamic-displayed revolving surface generating process has been produced.