OVERVIEW
Current power system produces electricity at power plants in batches according
to prediction of electricity demand and suppliesit directly to each consumer.
Although it is necessary to prepare reserve electricity for peak demands per hour,
there is a huge amount of power loss as there may be a difference between supply
and demand.
To solve this problem, it is helpful to store idle power at night's light load to optimize
power operation through load-leveling used for daytime peak loads.
The energy storage system can store the power produced by GRID, then supply it at
the time when power supply is most needed, thus increasing energy efficiency and
storing power in stages, from generation to transmission to consumers.
Applying these ESS technologies to power systems can reduce expensive fuel use,
mediate base loads, stabilize transmission power, and improve power quality.
▲ ESS configuration
▲ ESS concept
Main functionof ESS
• Stable power grid
• Improve power quality
• Power cost reduction
• Load leveling
• Intermittent peak shaving
• Short-duration power stabilization(Smoothing) for renewable power generation
• Energy time shift
• Frequency regulation
Special Feature of Global PCS(GP-3000)
• High efficiencyof over97% in one way and 92% in round-trip.
• IGBT PWM technology with SVM control by DSP
• Modular construction by AC switchgear + PCM + DC switchgear construction for
increasing safety and easy maintenance
• Plug-in type power-stack structure to reduce MTTR and easy maintenance
• High reliability by optimized stack cooling
• 100% front access structure suitable for container installation
• Advanced control algorithms (patent is registered)
• Optional ESS for Emergency power and Uninterruptible Power System which include
grid- disconnect switch(External static switches are not required)
• Four-leg systems to improve voltage unbalance characteristic at unbalanced load
condition (for emergency power and uninterruptible power supply)
▲ Installing case) Head Office of KDN in NAJU, PCS 250KW* with LIB 500Kwh*2sets
▲ Plug-in type power-stack
▲ 4-Leg System Configuration Diagram
