Current sensor for measuring inhomogeneity of potential distribution of arrester

US8405949B2 · kind B2 · utility

Assignee

• CHINA ELECTRIC POWER RESEARCH INSTITUTE · CN

Inventors

• Baoshan Wang · 红钢城街道, CN
• Xi Zhang · Shandong, CN
• Lin Tang · Sichuan, CN
• Yi Xiong · Houston, US
• Zhongqiu Zuo · 红钢城街道, CN
• Jinchao Jia · 红钢城街道, CN
• Li-Che Chen · Chunri, TW

Key dates

• Filing date: Sep 23, 2009
• Grant date: Mar 26, 2013
• Expiry date: Jan 12, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R19/0092
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A current sensor for measuring the inhomogeneity of potential distribution of an arrester having a metal casing, a protection circuit of sampling resistor, a signal conditioning circuit, a signal acquisition circuit, an electro-optical conversion circuit, and a battery module. The signal acquisition circuit includes MSP430F149 micro controller unit having an A/D converter and a serial port. The current sensor is an active sensor, works in a high floating potential, and has a good real time response, high accuracy, low power consumption, good electromagnetic compatibility, and strong anti-interference capability even under harsh electromagnetic conditions.