KYIV, Oct 3 (Reuters) - Russian forces launched a major drone attack overnight on 15 Ukrainian regions, causing damage to energy infrastructure and residential buildings, authorities said on Thursday.

The Ukrainian air force said it had shot down 78 out of 105 Russian drones during the assault, with 23 more likely impacted by active electronic jamming.

The drones damaged power lines and substations' equipment in the Kyiv, Odesa and Ivano-Frankivsk regions in the past 24 hours, Ukraine's energy ministry said on the Telegram messaging app.

The attacks caused temporary disruption of railway services in the southern Odesa region as well as power cuts for households, it said.

Odesa regional governor Oleh Kiper said power had been restored to more than 3,000 consumers in his region following the overnight attack, though a further 2,000 people remained without power.

Authorities said they had downed around 15 drones over Kyiv and its surroundings during an air alert that lasted over five hours. The central Ukrainian regions of Poltava, Cherkasy and Kirovohrad all reported minor damage to property.