Wang Jingang, Ou Chaolong, Chen Fusheng, Wan Quan
HIMALAYAL - SHANGHAI - CHINA
Abstract: This article introduces the technical characteristics of three typical field installed voltage transformers, and analyzes the work theory and operation skill. The field calibrating method for voltage transformer in different circumstance is put forward by theoretic analysis and field test, and it provides a useful reference for technicians of TV calibrating.
Key words: adjustable reactor, series resonance, voltage transformer, field calibration
The voltage transformer in the electric power system is primarily used for measurement, protective relay, automatic control, carrier communication and electric energy metering etc. Only voltage transformer used for electric energy metering (or measure winding) is generally regarded as error calibrating object. Voltage transformers in power plant and substation belong to the installation equipment and are mostly connected to high-voltage lines. It is not easy to assemble and brought back to the lab so that calibration is conducted on site.
HIMALAYAL provides innovative products that comprise high voltage test equipment, full-set high voltage test instruments, on-site test systems and on-line monitoring systems, and services regarding tests, diagnostics and asset monitoring for clients in power industry. We help to ensure safety and reliability in the power generation, transmission and distribution.