State Grid Hubei Marketing Service Center (measurement Center)

State Grid Hubei Electric Power Co., Ltd. Measurement Center

Li Ding

Jun Li

Xin Zheng

Xin Wang

Sike Wang

Xianjin Rong

Ming Lei

Bo Pang

Fan Li

He Yu

Tian Xia

Linghua Li

Wei Wei

Dengping Tang

Hong Shi

Li Liu

Li Li

Tao Peng

Lu Chen

Yi Fang

Peng Yao

Ben Ma

Lihua Yang

Yu Guo

Dongri Xie

Juan Qiu

Jinlin Su

Dongyue Ming

Qi Wang

Fuxiang Lv

Wenjing Yu

Shuibin Xia

Lieqi Yan

Yingchun Wang

Xuxiang Wang

Shangpeng Wang

Zheng Guo

Qin Guo

The present disclosure provides a direct current (DC) transformer error detection apparatus for a pulsating harmonic signal, including a DC and pulsating harmonic current output module and an external detected input module, where the DC and pulsating harmonic current output module outputs a DC and a DC superimposed pulsating harmonic current to an internal sampling circuit and a self-calibrated standard resistor array; and the internal sampling circuit converts the input DC and the input DC superimposed pulsating harmonic current into a voltage signal, and sends the voltage signal to an analog-to-digital (AD) sampling and measurement component through a front-end conditioning circuit and a detected input channel. The DC transformer error detection apparatus can complete self-calibration for measurement of the DC and the pulsating harmonic signal on a test site.

Direct current (DC) transformer error detection apparatus for pulsating harmonic signal

Disclosed are an online analysis system and method for a line loss of a transmission line. The system includes: a terminal extension and a terminal host, where time information synchronization between the terminal extension and the terminal host and between terminal extensions is performed by a clock synchronization module, and communication between the terminal extension and the terminal host and between the terminal extensions is performed by a communications module; and a line loss management platform, configured to receive measurement data of the terminal extension and the terminal host, match time information in the measurement data, and if time information in the measurement data of the terminal extension and the terminal host is matched, and time information in measurement data of the terminal extensions is matched, determine corresponding line loss information based on corresponding measurement information.

Online analysis system and method for line loss of transmission line

Disclosed are a non-to-the-home type device and method for detecting electric meter misconnection based on the PLC communication technology and using multiple frequencies. The detection device includes a master detection device and a slave detection device. The master detection device acquires address information of different electric meters at the outlet terminals of the electric meters by using RS485 communication. The modulation circuit modulates the communication address information of different electric meters into high-frequency carrier signals of different frequencies, and sends the high-frequency carrier signals to user sides by using the PLC communication technology. A line trap is provided between the modulation circuit and the electric meters. The slave detection device has a high-frequency carrier signal detection antenna. The user side detects the high-frequency carrier signal, demodulates the high-frequency carrier signal to obtain the high-frequency carrier signal frequency and the communication address information of the electric meter corresponding to user.

Device and method for detecting misconnection of electric meters

Growing community of inventors

Hubei, China

Li Ding