Single Line Diagram - 500kW / 1.04MWh BESS

SINGLE LINE DIAGRAM: 500kW / 1.04MWh STANDALONE BESS

Architecture: 4x Gotion 125kW / 261kWh C&I Units Connected to 20kV Grid
[ 20kV MEDIUM VOLTAGE GRID CONNECTION - DSO / DEDDIE ]
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MEDIUM VOLTAGE SWITCHGEAR / RMU (20kV, 50Hz, 16kA/1s, IP54 Outdoor)

LINE / DISCONNECTOR CUBICLE

  • Load Break Switch (LBS) 630A, 20kV
  • Earth Switch (ES)
  • Surge Arrester (SA) 20kV

REVENUE METERING CUBICLE

  • VT: 20kV / 100V, Cl. 0.2S
  • CT: 15-30/5A, Cl. 0.2S
  • MID Energy Meter (DSO)

TRANSFORMER CUBICLE

  • Vacuum Cir. Breaker (VCB) 630A
  • Protection Relays: ANSI 50/51, 50N/51N, 27/59, 81O/U
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MV STEP-UP TRANSFORMER
630 kVA | 20kV / 0.8kV | 50Hz | Dyn11 | Uk = 6%
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LOW VOLTAGE AC COMBINER PANEL (800V AC, 3-Phase, 3W+PE, 50Hz, Icu = 35kA)
MAIN LV CIRCUIT BREAKER: MCCB/ACB 630A, 3P, 800V AC, Motorized, Shunt Trip (ESD)
════════════ 800V AC BUSBAR ════════════
MCCB-01
160A, 3P, 800V AC
MCCB-02
160A, 3P, 800V AC
MCCB-03
160A, 3P, 800V AC
MCCB-04
160A, 3P, 800V AC
SPD Protection
Type 1+2, 800V AC
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BESS UNIT 01

Gotion C&I

• Rating: 125kW / 261kWh
• PCS: 125kW (800V AC)
• LFP Battery (1040-1518V DC)
• Integrated BMS, EMU, Liquid Cooling
BESS UNIT 02

Gotion C&I

• Rating: 125kW / 261kWh
• PCS: 125kW (800V AC)
• LFP Battery (1040-1518V DC)
• Integrated BMS, EMU, Liquid Cooling
BESS UNIT 03

Gotion C&I

• Rating: 125kW / 261kWh
• PCS: 125kW (800V AC)
• LFP Battery (1040-1518V DC)
• Integrated BMS, EMU, Liquid Cooling
BESS UNIT 04

Gotion C&I

• Rating: 125kW / 261kWh
• PCS: 125kW (800V AC)
• LFP Battery (1040-1518V DC)
• Integrated BMS, EMU, Liquid Cooling
AUXILIARY SYSTEM

Station Power

• Aux Xfrmr: 25kVA (800V/400V)
• LV Aux Panel (400V/230V AC)
• UPS 110V DC Backup
• Master EMS & SCADA Gateway
• Fire Alarm & CCTV
EQUIPMENT SCHEDULE & TECHNICAL SPECIFICATIONS
System / Equipment Sub-Component Technical Parameters & Ratings
MV Grid Connection 20kV Switchgear (RMU) 24kV class, 16kA/1s, SF6/Air insulated outdoor RMU. LBS 630A, VCB 630A, Protection Relays (ANSI 50/51, 50N/51N, 27/59, 81O/U), MID Revenue Metering (Cl. 0.2S).
Step-Up Transformer MV Transformer 630 kVA, 20kV / 0.8kV, 50Hz, Vector Group Dyn11, Uk = 6%, Outdoor Oil-immersed or Dry-type.
LV AC Switchboard 800V AC Combiner Panel 800V AC, 3-Phase, 3W+PE, 50Hz. Main MCCB/ACB 630A 3P with Shunt Trip. 4x Incomer MCCBs 160A 3P. Type 1+2 Surge Protection Device (SPD).
BESS Cabinets (x4) Gotion All-in-One C&I 4x 125kW / 261kWh (Total 500kW / 1.04MWh). LFP Chemistry, 1040V-1518V DC. Bi-directional PCS 125kW, 800V AC. Integrated Liquid Cooling, BMS, EMU & Aerosol Fire Suppression.
Auxiliaries & Control Aux Power & Control System 25kVA Aux Transformer (800V/400V-230V). LV Aux Panel for HVAC/Chillers & Lighting. 110V DC UPS Battery Backup for MV tripping coils & RTU. Master EMS & Aggregator SCADA Router.