What systems are included in a Bess container?

Each BESS container is mainly comprised of batteries, battery management system (BMS), power conversion system (PCS) and power management system (PMS). Also included are auxiliary systems such as heating, ventilation and air conditioning (HVAC) system, and fire suppression system. Figure 2: Interior of the BESS container

What is Bess at HKIA?

Details of BESS at HKIA Overview of design The BESS at HKIA comprises three 40-foot BESS containers, which in total provide an additional 4 MVA emergency power capacity for at least 30 minutes. All three BESS containers are installed on trailers outside the existing generator house.

What is the largest Bess in Hong Kong?

It is the largest BESS in Hong Kong, with a maximum power output of 4 megawatts. It is the size of around three 40-foot containers, weighs 75 tonnes, and is on wheels so it can be flexibly used at different locations in the airport.

What is a Bess power amplifier?

BESS functions as a “Power Amplifier” at construction sites when it is continuously charged, converting a small portion of temporary power supply to provide high output current for equipment with high instantaneous current requirements. BESS is best suited for following equipment with intermittent loads but high current requirement s.

How many lithium batteries are stored in Bess?

Over 400 lithium batteries are stored in BESS’s three containers for a capacity, equivalent to more than 55,000 pieces of 10,000 milliamp hours (mAh) portable power banks. Each container is equipped with battery management, energy conversion, air conditioning, fire, lighting and fully automated computer control and monitoring systems.

Where should a Bess be placed?

Place the BESS as close as possible to the instantaneous load equipment (e.g. tower crane) to minimise the length of outgoing large cable to reduce cost. Rather, longer incoming cable could be acceptable because of much smaller current and lower cost, providing higher wiring flexibility.