State Grid Henan Electric Power Research Institute

State Grid Corporation of China

Donghui Wang

Guangzhou Wang

Zhuangzhuang Zhang

Leilei Wang

Songyang Zhang

Degui Yao

Rui Li

Jiaqi Zhang

Han Xiao

Zhongbin Lv

Dong Wang

Xing Guo

Lin Lu

Yuan Li

Weipo Liu

Xu Tian

Jinfeng Geng

A contribution identification method for noise at a boundary of an urban substation in the present disclosure includes the following steps: describing site elements and surrounding environmental elements of an urban substation; measuring and recording a background noise value at each boundary of the urban substation; determining an orientation of a specific sound source of the urban substation, and setting a corresponding measurement point at each boundary of the urban substation; obtaining a spectrum of each specific sound source; analyzing a contribution of each intra-substation sound source of the urban substation to noise at the boundary of the substation; analyzing a noise level of each sound source measurement point in the urban substation; recording measured data during noise measurement, and correcting a noise measurement result; and generating a test report.

Contribution identification method for noise at boundary of urban substation

A soundproof door system includes a chute; a door body, where a bottom of the door body is inserted into the chute and able to slide along the chute; a first roller disposed on the bottom of the door body and supported on a bottom wall of the chute; a first soundproof plate provided with a first end connected to the door body and a second end abutting against an inner wall of the chute; a second soundproof plate provided with a third end connected to the door body and a fourth end abutting against the inner wall of the chute; and the first end and the third end are respectively located on two sides of the door body, and the second end and the fourth end are respectively located on both sides of the door body.

Soundproof door system

Growing community of inventors

Henan, China

Donghui Wang