The 220-kilovolt double-circuit transmission line from North China’s Inner Mongolia Autonomous Region to Mongolia had safely operated for 5,000 days as of March 19.
The power line has delivered more than 16.7 billion kilowatt-hours of electricity to Mongolia, including 492 million kWh of clean electricity.
The 178.3-kilometer power line connects four wind farms on the Urad grassland and sends their electricity to the Oyu Tolgoi copper and gold mine and its neighboring residential areas in Southern Gobi Province Mongolia via the Guohe 220-kV substation of Inner Mongolia Power Group. The power line is a crucial link in China-Mongolia energy cooperation.
The power line, as China’s first high-voltage electricity channel to another country, went into service on November 5, 2012. To ensure the safety and stability of cross-border power supply, Inner Mongolia Power Group organized a team of personnel specialized in power dispatch and transmission, transmission line operation and maintenance, and communication technology. The team has effectively dealt with emergencies along the transmission line and carried out 4,235 dispatch orders.
Inner Mongolia Power Group advances smart, digitalized operation and maintenance, such as unmanned aerial vehicles for inspection. It also conducted multiple technological exchanges with Mongolia to identify the technical nuances of matters, including protective relay, automatic communication and other areas. It cooperated with Mongolia by holding cross-border drills and establishing coordinated emergency response procedures, thereby eliminating 106 defects in the transmission lines and the devices. This ensured the long-term safe and stable operation of the line.
Inner Mongolia Power Group intends to take the advancement of the protocol on power supply to Mongolia’s central region as an opportunity and use energy advantages to explore a new China-Mongolia cross-border power supply model, thereby improving the cross-border electricity transmission system.
(Executive editor: Zuo Shihan)
