Abstract:

To solve the problems of existed load decomposition methods with the load curve features considered, a nonintrusive processing method based on hex fitting algorithm was proposed. The problems to demand high precision load collection devices and effectively to deal with the same kind of electric appliances under different working modes have been solved. Experiments show that the proposed method could determine the open time, elapsed time and operating mode of electric appliances accurately and process well with the same kind of appliances under use conditions. Meanwhile, by the use of low\|rate sampling, the required data can be obtained directly from the universal smart meters, reducing the cost of inputs, improving users enthusiasm on intelligent electricity, which will provide the construction of smart grid with the basis data.

Key words: noninvasive, appliances load decomposition; , hex fitting algorithm, low frequency sampling, smart electric consuming