Shaanxi Normal University

Beijing Zhongruthe Electrical Co., Ltd

Hao Liu

Yan Gao

Fei Gao

Chenguang Yan

Baohui Zhang

Xianwu Zhou

Shuyou Zhu

Shengzhong Liu

Baofeng Luo

Rongrong Gao

Che Xu

A transformer monitoring apparatus based on non-electricity comprehensive characteristic information includes a transient oil pressure characteristic measuring module, a transient oil flow characteristic measuring module, a transient acceleration characteristic measuring module, a signal conditioning and acquiring module, and a digital processing and analyzing module; the transient oil pressure characteristic measuring module, the transient oil flow characteristic measuring module, and the transient acceleration characteristic measuring module are each connected to the signal conditioning and acquiring module, and the signal conditioning and acquiring module is connected to the digital processing and analyzing module. A transformer monitoring method based on non-electricity comprehensive characteristic information is also provided. The apparatus and method calculate an operating oil pressure, an operating oil flow, and an operating acceleration, which characterize a running state of the transformer, by comprehensively using information of a plurality of non-electricity transient characteristics in the transformer.

Transformer monitoring apparatus and method based on non-electricity comprehensive characteristic information

Disclosed is a CuO/Se composite film, in which Se with low melting point (221&#xb0; C.) and strong photosensitivity is introduced into CuO, providing the film with fewer defects and excellent optical, electrical and photoelectric properties. In the preparation method of the invention, Se is introduced into CuO and melted by low-temperature annealing, and then the molten Se can infiltrate CuO to eliminate or reduce defects in the CuO film such as voids and dangling bonds, thereby improving optical, electrical and photoelectric properties of the film and overcoming the shortcomings that CuO has poor crystallinity, high melting point and is decomposed at a high temperature.

CuO/Se composite film

Growing community of inventors

Shaanxi, China

Hao Liu