Periodic testing of transformer stations and electrical equipment is a very important job in the operation process of factories, enterprises and substations. It is because that in particular, electrical equipment is required to operate continuously. Therefore, periodic testing will help detect and anticipate possible damage risks to electrical equipment, thereby planning to replace or restore equipment, ensure proper operation. reliable and safe operation of the electrical system.

Ngoi Phat hydropower project is located in the area of 2 communes Ban Xeo and Ban Vuoc in Bat Xat district, Lao Cai province with a capacity of 72MW, invested by Northern Power Development and Investment Joint Stock Company 2 NEDI2 as an investor and in charge of operations management. With the trust of the investor, A Chau Electric Energy Joint Stock Company (ACEE) participates in the implementation of periodical testing of the measurement and protection system for Ngoi Phat Hydropower Plant.

Ngoi Phat Hydropower Plant uses protective relay systems of many different manufacturers: DRS – Compact generator protection relays, P343 Agile; Distance protection relay 7SA611, REL670; Busbar differential relay 7UT61; Line differential protection relay RED670 and relay protection system for medium voltage circuit breakers REJ601…

At the end of the periodical testing of the measurement and protection system, ACEE has sent a summary report of assessment and important recommendations to Ngoi Phat Hydropower Plant to help the plant’s measurement and protection system operate safely, stably and reliably.