The National Stadium, known as the "Ice Sail", covers an area of 68,700 square meters and has 10,000+ spectator seats.

The Shougang Winter Olympic Training Venue is located in the Xi10 Winter Olympic Square area of the new Shougang High-end Industry Comprehensive Service Area, between Xiuchi and Qunming Lake at the foot of Shijing Mountain. The project includes four ice rinks of curling, figure skating, speed skating and ice hockey, parking lots and other supporting facilities, with a total construction area of nearly 87,000 square meters.

The harmonic control devices of the two venues adopt BW-APF active power filtering, which effectively suppress harmonic pollution in the power distribution system, improve the safety and reliability of the operation of the power distribution system, and escort the smooth holding of the Winter Olympics.

Load Analysis

• Lighting equipment: lighting equipment will produce harmonics during the adjustment process, and the "skin effect" of harmonics will increase the heat of lighting equipment and accelerate the aging and damage of equipment; The high-frequency pollution of harmonics will also affect the stability and accuracy of the dimming control equipment, and may fail in severe cases, so the need for harmonic control is generated.
• Broadcast equipment: LED screen and audio equipment, computers, etc. when holding competitions, broadcast equipment contains a large number of switching power supply and voltage regulation rectifier equipment, is a typical non-linear load, a large number of use will bring serious harmonic pollution to the power distribution system, so the need for harmonic control is generated.
• Power equipment: a large number of typical nonlinear power loads such as frequency converters and DC motors are used in the venue, and the harmonics generated flow into the power distribution system, affecting the power quality of the power distribution system, reducing the service life of the equipment, and affecting the safe operation of the power distribution system, so the need for harmonic control is generated.

Governance scheme

BW-APF active power filter device is adopted

1、Product features

• High efficiency filter compensation;
• Independent modular, multi-redundant design;
• Multi-functional free combination of working mode;
• Adopt three-level topology;
• Layered variable speed cooling system;
• Vertical wound inductor design;
• Self-developed control system;
• Perfect protection and reliable operation;

2、Product function

• Harmonic governance: different functions such as full compensation and harmonic channel setting are optional, and the passive closed-loop chain control is fully coordinated;
• Reactive power compensation: capacitive sensibility bidirectional stepless dynamic compensation reactive power;
• Unbalance compensation: detect the negative sequence component in the power grid and correct the three-phase unbalanced current to a three-phase balance current;
• User-friendly prioritization design;

Governance effect

The active power filter effectively suppresses the harmonic pollution in the power distribution system, improves the safety and reliability of the operation of the power distribution system of the Winter Olympic venues, contributes its own strength to the preparation of the ice athletes for the Winter Olympics, and escorts the smooth holding of the Winter Olympic ice hockey hall.