National Stadium(Bird's Nest)

The National Stadium (Bird's Nest) is located in the southern part of Beijing Olympic Park, and it’s the main stadium for the 2008 Beijing Olympic Games. The project covers a total area of 21 hectares and there are approximately 91,000 seats for audience. The opening and closing ceremonies of the Olympic, Paralympic Games were held here together with track and field competitions and football match finals. After the Olympics, it became a large-scale professional place for Beijing citizens to participate in sports activities and enjoy sports entertainment, and it also becomes a landmark sports building and Olympic heritage.

Specific Requirement

1) As the main venue of Beijing Olympic Games, Bird’s nest undertakes multiple Olympic Games. Inner area is so large that it needs perfect security and logistics support facilities. And the systemized modern facilities require stable and reliable power supply. The prevention and treatment of thunderstorm weather and strong current should be set up in the low-voltage distribution line.

2) There are many advanced video camera and monitoring equipments inside and outside the stadium. Some equipments are directly exposed outside the stadium. The outdoor monitoring system connects indoor monitoring room to realize real-time data transmission through signal line. The internal and external lines for data transmission should be equipped with lightning protection electromagnetic pulse measures to ensure the equipments running in the background won’t be affected by lightning electromagnetic pulse caused by external transmission lines.

3) Any errors are not allowed during the event in center control room and data rooms inside the stadium. So in thunderstorm, there should be lightning protection equipotential and grounding measures in server room, to ensure the potential difference between equipments is minimized and maintains good conductance to the huge ground network of the whole building.

Designing scheme

Implementation Effect Evaluation

During construction and maintenance of the National Stadium, the low-voltage distribution line is equipped with TOWE Brand SPD to ensure the stability of all lines. Systemized monitoring camera also carries out shielding treatment of lightning protection electromagnetic pulse. The potential difference between metal equipments running in background is minimized by equipotential connection measures, to enhance the capability of equipments to cope with strong current during the event.