By Pavel Polityuk KYIV (Reuters) – Shelling hit a high-voltage power line on Friday at a major Ukrainian nuclear power station captured by Russia, prompting the plant’s operators to disconnect a reactor despite no radioactive leak being detected. Ukraine’s state nuclear power company Energoatom blamed Russia for the damage at the Zaporizhzhia power station, Europe’s largest. Earlier this week, the United Nations nuclear watchdog appealed for access to the plant, which Washington says Russia is using as a battlefield shield. Russia’s defence ministry accused Ukrainian forces of shelling the pla…