GWPS-110V/220V-300AH AC/DC Integrated Power Supply System/panel

Cabinet Quantity and Composition

This GWPS-110V/220V-300AH high-capacity AC/DC integrated power supply adopts a split multi-cabinet combined structure. The system is electrically integrated as a complete unit while being physically divided into three standard power cabinets, with standardized layout and wiring that fully complies with international substation installation and IEC operational specifications. The detailed composition is as follows:

1.AC Incoming Cabinet (1 set):

Serves as the system’s main power input and control unit, equipped with dual-channel universal mains input supporting AC380-415V ±15% (line-to-line) / AC220-240V ±15% (line-to-neutral), with 50/60Hz auto-sensing. An ATS automatic transfer switch is configured for seamless switching between main and standby power sources. The cabinet integrates a Class I surge protective device (SPD, Imax ≥ 40 kA), incoming molded case circuit breaker, and AC voltage and current monitoring modules, providing stable and reliable AC input for the entire integrated power system.

2. DC Main Control Cabinet (1 set):

Acts as the core control unit of the entire GWPS-110V/220V-300AH system, integrating high-frequency intelligent rectifier modules, a 7-inch English-language touchscreen main monitoring unit, insulation monitoring device, battery inspection module, voltage step-down regulator (silicon diode drop module / DC-DC chopper), DC bus, and general feed-out circuits. It undertakes core functions including AC rectification and voltage stabilization, intelligent battery charge-discharge management, system data acquisition, fault alarm, and circuit protection. DC110V and DC220V output modes are factory switchable to adapt to global substation standard requirements.

3. Battery Cabinet (1 set):

A dedicated energy storage cabinet compatible with 300AH maintenance-free lead-acid batteries or lithium iron phosphate battery packs for the GWPS-110V/220V-300AH system. Corresponding charging curves and operational management parameters are pre-set before factory delivery. The cabinet is equipped with battery fixing brackets, battery fuses, temperature detection modules, and anti-theft protective structures to deliver reliable emergency energy storage backup during mains power failure.

Note: An integrated single-cabinet structure with reduced capacity is available for small-scale application scenarios, while the three-cabinet configuration is adopted for standard industrial power projects. All cabinets feature unified dimensions: 2260 mm (H) × 800 mm (W) × 600 mm (D), suitable for standard substation floor installation. The equipment achieves an IP30 ingress protection rating, with a standard RAL7035 light gray finish (customizable upon request).

Product Introduction (Core Functions + Load Capacity)

1.Core Functions

• This intelligent integrated station power system of GWPS-110V/220V-300AH integrates AC power distribution, DC regulated power supply, intelligent energy storage, fault monitoring, and remote operation and maintenance, fully covering the power supply requirements of global industrial power stations and utility substations:
• Automatic Dual Power Transfer Function: Adopts dual-channel mains input design with ATS automatic main/standby power switching, realizing millisecond-level seamless switching during mains anomalies without power interruption, ensuring continuous and stable operation of terminal equipment.
• Intelligent Charge-Discharge Management Function: Utilizes modular high-frequency switching rectification technology with automatic floating and equalizing charge switching (timed or remote-activated equalizing charge supported), matching the charging characteristics of 300AH large-capacity battery packs. Multiple protection mechanisms including overcharge, overdischarge, over-temperature, short circuit, and over-current protection are integrated to extend battery service life. The system is compatible with lead-acid and lithium iron phosphate batteries with factory-preconfigured charging curves and parameters; mixed use or on-site arbitrary switching of the two battery types is strictly prohibited.
• Full-Parameter Intelligent Monitoring Function: Equipped with an English-language touchscreen monitoring host, the system real-timely collects, displays and stores full-dimensional operational data, including AC input voltage and current, DC bus voltage and current, branch feed-out current, single-cell battery voltage, battery ambient temperature, DC bus/branch insulation status, and switch position status.
• Fault Early Warning & Alarm Function: Triggers audible and visual on-site alarms and background prompt pop-ups for abnormal conditions such as mains failure, module malfunction, battery undervoltage, insulation degradation/ground fault, circuit overload, and short circuit. It supports fault recording, historical data storage, and timestamp-based event traceability for convenient troubleshooting and maintenance.
• Insulation Monitoring & Branch Protection Function: A built-in high-precision insulation monitor accurately detects the ground insulation resistance of DC positive and negative poles and realizes precise faulty branch location. Each output circuit is equipped with an independent DC circuit breaker to implement isolated single-circuit fault protection, ensuring normal operation of the overall system and unaffected branches.
• Remote Operation & Maintenance Function: Reserved RS485 and Ethernet communication interfaces support standard Modbus and IEC 61850 international power communication protocols, enabling seamless integration with SCADA systems for remote parameter configuration, real-time data query, fault alarm push, and unattended intelligent operation.
• Uninterruptible Emergency Power Supply Function: The 300AH battery pack activates power supply within milliseconds (≤ 5 ms) once the mains power fails, providing continuous power for critical loads including DC operation/control circuits, relay protection devices, and emergency lighting. It ensures safe equipment shutdown and normal fault signal uploading to prevent accident escalation.

2. Load Capacity

Equipped with a 300AH rated capacity and dual international standard DC voltage output modes for versatile load adaptation, the GWPS-110V/220V-300AH system delivers superior power quality with rectifier voltage regulation accuracy ≤ ±0.5%, current stabilization accuracy ≤ ±1%, and ripple coefficient ≤ 0.5%. Detailed load parameters and estimated backup duration are specified below:

• DC220V Mode Load (International Mainstream Substation Control Voltage)

Typical Loads: High-voltage switch operating mechanisms, relay protection devices, automatic monitoring systems, DC emergency lighting, secondary control circuits, etc.

• DC110V Mode Load (American / Asian Standard Control Voltage)

Typical Loads: Medium/low voltage switch control circuits, auxiliary communication power supplies, instruments and meters, signal alarm devices, and other small/medium-power DC loads.

• AC Load Capacity (International 400V/230V Standard)

The AC cabinet of GWPS-110V/220V-300AH supports multi-channel output compliant with international 400V three-phase / 230V single-phase standards, with a maximum total AC feed-out capacity of 100 kVA and a recommended continuous operating load ≤ 80 kVA. It supplies power for on-site daily lighting, maintenance equipment, monitoring hosts, cooling fans, air conditioners, and other auxiliary AC loads, fully meeting global site operation and maintenance power demands.

Important Note: The above backup duration data is an estimated value based on fully charged new batteries under an ambient temperature of 20 °C to 25 °C. Actual backup time varies depending on battery aging degree, ambient temperature, discharge depth, and real-time load magnitude. Regular calibration discharge tests are recommended to verify the actual battery capacity.

3.Applicable Substation Scale and Primary Equipment Load Capacity

• Benefiting from its 300AH large-capacity energy storage, dual international standard DC voltage output, and excellent comprehensive load capacity, the GWPS-110V/220V-300AH system is highly adaptable to global mainstream medium and low-voltage substations and supporting primary power equipment, fully satisfying the power supply requirements of conventional overseas industrial and utility power stations.
• Applicable Substation Scale: The system is applicable to international standard 11 kV, 33 kV, and 132 kV substations, covering full operational, control, and emergency power demands of 132 kV terminal substations, 33 kV regional substations, and 11 kV switching stations and central distribution rooms. It is not applicable to 220 kV-class and above large hub substations that require dual-bus and dual-battery redundant configuration, perfectly matching the construction standards of overseas industrial, mining, residential park, and regional medium-sized power stations.
• Primary Equipment Adaptation: The maximum allowable number of connected circuit breakers is determined by the instantaneous overload capacity of rectifier modules and the impulse discharge performance of the battery pack. This GWPS-110V/220V-300AH system can simultaneously support the impulse load of 10 to 15 sets of 132 kV circuit breakers or 20 to 30 sets of 33 kV/11 kV circuit breakers (calculated based on a single circuit breaker operating mechanism peak power ≤ 3 kW and action duration ≤ 200 ms). The steady-state holding power of circuit breaker operating mechanisms is negligible (typically < 50 W per device) and not included in continuous load calculation. The 300AH capacity is mainly designed to guarantee long-duration emergency backup power rather than limiting the number of connectable circuit breakers.
• Secondary Equipment Adaptation: While carrying the above primary equipment operating loads, the system can fully support a complete set of substation secondary equipment, including relay protection devices, measurement and control devices, background monitoring systems, signal alarm devices, and emergency lighting, realizing integrated AC/DC power guarantee for both primary and secondary equipment.
• Load Margin Reservation: The system retains a minimum 20% load margin under conventional operating conditions, supporting subsequent minor capacity expansion and intelligent renovation of power stations.

4. Basic Configuration

This GWPS-110V/220V-300AH AC/DC integrated power supply adopts a standardized modular design with complete supporting accessories and stable operational performance. The core configuration is detailed in the table below:

5. Application Scenarios

With stable power output, reliable long-duration backup capacity, and convenient operation and maintenance, this GWPS-110V/220V-300AH high-capacity AC/DC integrated power supply is applicable to global industrial and utility power scenarios requiring high power supply reliability and continuity:

• Utility Power System Scenarios: International standard 11 kV–132 kV intelligent substations, switching stations, distribution stations, small and medium-sized hydropower and photovoltaic power plants, and industrial user distribution stations. It provides integrated AC/DC power for substation relay protection, automatic control devices, switch operating mechanisms, emergency lighting, and monitoring systems, adapting to unattended intelligent power station operation.
• Heavy Industry Scenarios: Global petrochemical, metallurgical, coal mining, large manufacturing plants, and industrial park main distribution rooms. It supplies uninterrupted power for high-voltage distribution equipment, Distributed Control Systems (DCS), precision instruments, and emergency equipment, adapting to complex electromagnetic interference and wide-temperature operating environments.
•  Rail Transit Scenarios: Metro step-down substations, electrified railway substations, and high-speed railway station distribution rooms worldwide. It provides stable power for track signal systems, power distribution protection devices, and emergency monitoring equipment, meeting international high-reliability safety power supply standards for rail transit.
• Public Building & Infrastructure Scenarios: Large commercial complexes, high-rise office buildings, Grade A hospitals, and data center supporting distribution rooms, ensuring uninterrupted power supply for fire-fighting distribution, emergency lighting, security monitoring, and UPS front-end protection equipment.
• Special Scenarios: Port shore power systems, wind/photovoltaic booster stations, communication base station supporting power rooms, and remote unattended field stations with unstable grid conditions, adapting to scenarios with frequent grid fluctuations and long-duration emergency backup