[Technology] wind farm power line route selection (overhead)

As a part of wind farm design, the choice of route is crucial to the overall design of the line. Correct choice of route or not will affect whether the circuit design is safe, economical and reasonable.

The principle of path selection should follow the following points:

1, the path should be short. This is one of the determinants of line engineering economics. Short means that the path to be as straightforward as possible to avoid winding roads, short lines, the project cost is low, less construction and maintenance, power loss in the line less. Therefore, the ideal route is a straight line. However, due to the influence of the terrain and various obstacles, the path actually selected is often a polyline composed of many corner points. Therefore, the choice of route, it should be based on the principle of lines go straight, try to avoid the corner or less corner, in particular, to avoid the degree of large corners, to minimize the line. Of course, when the line encounters a special section, it should be dealt with on site. For example, changing the direction of the route to bypass this special section can not blindly pursue the short and lead to more difficulty in construction.

2, the terrain should be flat. The terrain and geological conditions that the path passes determine the foundation and structure of the tower as well as the ease of construction and maintenance. Flat terrain and high-quality geological conditions can greatly reduce the difficulty of construction, while the choice of relatively simple foundation and tower form, so the line selection when the topography is flat. However, if the route is erected on the ground, many factors will be involved, such as other obstacles such as farmland and villages. Based on the above factors, we should try our best to choose the area with the slightest slope when choosing the route.

3, to avoid cross-over

(1) Avoid cross-over with the river. Across the river and cross, the construction more difficult, at the same time, maintenance and repair time is not convenient. So try to avoid crossing the river cross-roads, especially large rivers. In case of special circumstances must be crossed, it should also choose the narrowest channel, the highest cross-strait, the best soil quality, not easy to be flooded sections of the river.

(2) to avoid cross-over with power lines and communication lines. Crossing with the power lines and communication lines, the construction more difficult, at the same time, maintenance and repair time is not convenient. Therefore, try to avoid crossing the power lines and communication lines. In case of special circumstances must be crossed, it should meet the corresponding electrical distance requirements.

4, convenient transportation. The path should be chosen near the road, convenient transportation, thereby reducing the construction difficulty. At the same time, should try to avoid or less arable land. Must be adopted, should be used without pull the cable or tower.

5, try to avoid the forests, green areas, fruit trees, parks, shelterbelts and so on.

6, try to avoid flammable and explosive places and heavily polluted areas and radio stations, airports and so on.

Of course, the route selection of wind farm routes, not empty of theory on the paper, must be combined with the actual situation on the scene. Theory combined with reality in order to choose safer, more economical and more reasonable routes.