Summary
The digitalization of substations has become essential to ensure efficient and reliable operation of advanced power grids. Traditionally, conventional instrument transformers have been employed for voltage and current measurement in Gas-Insulated Switchgear (GIS) for protection and measurement purposes. However, precise voltage and current measurement in digital substations require Low-Power Instrument Transformers (LPITs). Currently used LPIT designs typically install voltage and current sensors inside the GIS tank; however, the ongoing trend toward more compact GIS configurations requires smaller, easier-to-install alternatives.
Read more Read lessTo meet these requirements, a novel spacer-type LPIT design was developed.
In this study, a prototype spacer-type LPIT was developed and subjected to a comprehensive program of type and routine tests. The evaluation encompassed verification of its electrical measurement performance in accordance with IEC 61869 requirements, as well as assessment of insulation performance in compliance with IEC 62271-203. Furthermore, long-term overvoltage withstand tests were performed to validate the LPIT’s dielectric endurance and operational reliability over its expected service life.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | A3_11975_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Korea, Republic of (South Korea) |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
KIM Joong-Kyoung - HYOSUNG; LEE Jeong-Geun - HYOSUNG; KIM Jae-Hyeong - HYOSUNG; JEONG Dong-Hoon - HYOSUNG
Keywords
