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Photovoltaic(PV) Product

Summary

ESS(Energy Storage System)

An energy storage system (ESS) is a storage device that stores power like a very large water tank and can be used when power is temporarily short or when needed.

ESS Configuration

System Configuration (High pressure connection)

  • PMS : Monitors the entire ESS and controls the plant
  • PCS : Transforms electrical properties (AC ↔ DC, or changes the voltage or frequency) to charge/discharge the power produced to the battery
  • Battery : Store (recharges) power received from PCS, then output (discharge) power to system at the requried time
  • BMS : Monitors and controls the battery

ESS CONTAINER Configuration

ESS with Container

  • Container : Intergral / Segment Type – Design and construction according to site conditions
  • No electrical room required
  • Enhanced system durability
PCS Capacity
  • 100kW
  • 250kW
  • 500kW
  • 1,000kW
  • 2,000kW
  • 2,500kW
PCS Type
  • Transformer
  • Transformerless
Battery (default specification)
  • 274kWh
  • 766kWh
  • 1,497Wh
  • 2,994kWh
  • 5,988kWh
  • 7,485kWh
Battery and PCS Enclosure
  • Container (Intergral / Segment Type)
Air conditioning equipment
  • System cooling/heating, automatic switching system for cooling/heating by weather, remote temperature control function, schedule management
Firefighting equipment
  • Automatically detects fires and sprays eco-friendly fire extinguishing agents
Switchboard
  • Hybrid distributed power supply, protection relay, distribution transformer, and power exchange meter included (100 kW switchboard for ESS is optional)
PMS
  • Local control and remote control
Web monitoring
  • Option
O&M
  • Separate contract
Installation environment Installation location
  • Indoors (IP20)
Ambient temperature
  • -20°C ~ 50 °C
Storage temperature
  • -20°C ~ 50 °C
Relative humidity
  • less than 95%
Altitude
  • less than 1,000m
Battery Maximum input voltage
  • 950Vdc
  • 1,100Vdc
  • 1,100Vdc
  • 1,100Vdc
  • 1,150Vdc
  • 1,150Vdc
Voltage range
  • 550 ~ 850Vdc
  • 750 ~ 1,000Vdc
  • 750 ~ 1,000Vdc
  • 750 ~ 1,000Vdc
  • 750 ~ 1,100Vdc
  • 750 ~ 1,100Vdc
Maximum input current
  • 200Adc
  • 367Adc
  • 734Adc
  • 1,470Adc
  • 2,800Adc
  • 3,500Adc
Output Relay connection method
  • 3-phase 4-wire system
  • 3-phase 3-wire system
  • 3-phase 3-wire system
  • 3-phase 3-wire system
  • 3-phase 3-wire system
  • 3-phase 3-wire system
Insulation
  • Transformer
  • Transformerless
  • Transformerless
  • Transformerless
  • Transformerless
  • Transformerless
Rated Power
  • 100kW
  • 250kW
  • 500kW
  • 1,000kW
  • 2,000kW
  • 2,500kW
Rated Voltage
  • 380V (-10%, + 10%)
  • 440V (-10%, + 10%)
  • 440V (-10%, + 10%)
  • 440V (-10%, + 10%)
  • 440V (-10%, + 10%)
  • 440V (-10%, + 10%)
Rated Output Current
  • 152A
  • 328A
  • 656A
  • 1,312A
  • 2,624A
  • 3,280A
Operating Frequency
  • 50Hz / 60Hz (-1%, +1%)
Current harmonics content
  • Total : <5% / Individual : <3%
Power factor
  • More than 0.99
Efficiency Charging efficiency
  • >96.36%
  • >98.02%
  • >98.15%
  • >97.99%
  • >98.00%
  • >98.31%
Discharging efficiency
  • >96.86%
  • >98.55%
  • >98.30%
  • >98.23%
  • >98.20%
  • >98.20%
Structure Appearance
  • 800 x 750 x1,655
  • 750 x 700 x 2,009
  • 1,300 x 790 x 2,152
  • 2,060 x 790 x 2,152
  • 3,600 x 800 x 2,050
  • 3,900 x 900 x 2,050
Weight
  • 820Kg
  • 650Kg
  • 1,000Kg
  • 2,000Kg
  • 3,280Kg
  • 3,800Kg
Cooling method
  • Forced air cooling
IP
  • 21
Noise level
  • <78dB

  • TURN-KEY system provided

    • Provide plug-in solar ESS by capacity

  • Maximize Yield

    • Achieve maximum system output efficiency through system analysis

  • Troubleshooting

    • System design and feasibility review through solar power generation data analysis
    • Standard system design by specialized capacity

  • BATTERY

    • Secured price competitiveness through long term contracts with major Korean battery manufacturers
    • Manufacturer's battery life/performance guarantee (quality guarantee issued)

  • All Products (PCS, PMS)

    • As a development/manufacturing company specializing in all PCS and PMS products, WonKwang S&T has secured superiority in solar power generation, ESS product performance and quality, and price competitiveness.

  • Maintenance

    • An A/S network has been established nationwide, and call centers are being operated. (A/S centers in Ulsan, Gwangju, Daegu, and Cheonan are in operation.)
    • Possible to respond within 24 hours nationwide after receiving a notice of failure
    • Failure prevention maintenance through ongoing inspections