ChatDiagram
Try for free
4 templates · Single-line diagram

Battery Energy Storage System Single Line Diagrams

Battery energy storage system (BESS) single line diagrams document the complete electrical architecture of a storage installation — from the battery racks through the battery management system, bidirectional inverters, transformer, protection switchgear, and grid interconnection point.

Standard IEEE Std 315 + ANSI device numberingEngine schematex-sldExport SVG · PNG · PDF
4 templates
Single-line diagram Battery Energy Storage System
Data center 2N UPS single-line — Single Line DiagramData center 2N UPS single-line — Single Line DiagramBattery Energy Storage SystemUse template →500 kW commercial peak-shaving BESS500 kW commercial peak-shaving BESSBattery Energy Storage SystemUse template →Community microgrid with solar and storageCommunity microgrid with solar and storageBattery Energy Storage SystemUse template →20 MW utility-scale BESS substation20 MW utility-scale BESS substationBattery Energy Storage SystemUse template →

Nothing close enough? Start from a blank single‑line diagram → Describe it in one paragraph.

How to

How to use a single‑line diagram template.

  1. 01Describe the BESS size, chemistry, and grid connection

    Example: '4MWh utility-scale BESS, 2MW bidirectional PCS, 0.5MVA step-up transformer to 11kV grid connection, four battery string cabinets at 100V DC bus.' Include the DC bus voltage and AC interconnection voltage.

  2. 02AI builds the storage and conversion path

    ChatDiagram draws the battery string blocks, DC bus, bidirectional PCS/inverter symbol, AC output breaker, transformer, and grid tie point with appropriate symbols and annotations.

  3. 03Add protection and BMS connections

    Specify the BMS architecture (central or distributed) and protection requirements: DC fuses or string contactors, DC SPD, AC overcurrent protection, isolation monitoring, and fire suppression interlock. ChatDiagram adds these to the SLD.

  4. 04Include metering and communications

    Describe revenue metering, SCADA/EMS connection points, and communications protocol (Modbus, CAN, DNP3). ChatDiagram annotates the SLD with meter symbols and SCADA connection notes.

  5. 05Export for interconnection application

    Export as SVG or high-resolution PNG for inclusion in your utility interconnection application, fire marshal submission, or EPC design package.

FAQ

Questions about single‑line diagram templates

Can ChatDiagram show the BMS architecture in the BESS SLD?

Yes. Describe the BMS hierarchy (cell-level, module-level, rack-level, system-level) and ChatDiagram will add BMS communication lines and the master BMS block connected to the PCS control interface.

Does it support DC-coupled solar-plus-storage SLDs?

Yes. Describe the shared DC bus connecting the PV array combiner, battery bank, and bidirectional inverter. ChatDiagram will draw the DC-coupled architecture with the MPPT charging path and battery charge/discharge path shown.

How do I show a BESS connected to an MV grid at 33kV?

Specify the step-up transformer ratio (e.g., LV/33kV) and ChatDiagram will include the transformer, HV circuit breaker, protection relay (87T, 21, 51), and 33kV busbar connection in the SLD.

Can the SLD include fire suppression and e-stop interlocks?

Yes. Describe the fire suppression system interlock (e.g., disconnect on CO2 release) and emergency stop requirements. ChatDiagram will add interlock symbols and annotation notes to the SLD at the appropriate disconnect devices.