改变电线杆默认接线距离和覆盖范围：

• 小型电线杆：覆盖范围 5x5 → 7x7
• 中型电线杆：接线距离 9 → 14，覆盖范围 7x7 → 14x14
• 远程输电塔：接线距离30 → 64
• 广域配电站：接线距离30 → 64，覆盖范围18 → 32

changes:

• small electric pole: supply area distance 5x5 → 7x7
• medium electric pole: maximum wire distance 9 → 14, supply area distance 7x7 → 14x14
• big electric pole: maximum wire distance 30 → 64
• substation: maximum wire distance 30 → 64, supply area distance 18 → 32