3300kW 950Vac AC Load Bank Product Introduction

During the commissioning and acceptance phases of energy storage systems, discharge tests are required under different power conditions.
However, in many cases, there is no real load on-site to consume the energy released by the battery.
A load bank can:
(1) simulate a real electrical load;
(2) consume the energy released by the energy storage system;
(3) verify the output capability of the PCS;
(4) test system stability;
Therefore, the load bank is an important testing device for the commissioning and performance verification of energy storage systems.

In energy storage system testing, the load bank is typically connected to the AC output side of the PCS (Power Conversion System).
The system test structure is generally:
Battery system → PCS → Load bank
In this way, the AC power output by the PCS is absorbed by the load bank, thereby completing the system power test and discharge test.

As energy storage systems expand, PCS power typically reaches 1MW, 2MW, 3MW, or even higher. If the load equipment's power is insufficient, the system cannot complete a full-power discharge test.
A 3300kW load bank can support:
(1) MW-level PCS testing;
(2) commissioning of large-scale energy storage systems;
(3) high-power continuous operation testing.

The load bank uses highly stable resistive load modules. When current passes through the resistor, electrical energy is converted into heat.
By controlling different load modules, it can simulate: full-load operation, partial load, and graded load changes, thus helping engineers simulate real grid load conditions in an experimental environment.

The load bank can help engineers verify the following key performance characteristics:
1: PCS power output capability;
2: System voltage stability;
3: Dynamic load response capability;
4: Battery discharge capability;
5: System protection functions.
These tests are crucial for the safety verification of energy storage systems before grid connection.

During high-power operation, a large amount of electrical energy is converted into heat, making the cooling system crucial.
This load bank employs an optimized forced-air cooling system, including: an industrial-grade high-power fan; optimized airflow channels; and a high-efficiency ventilation structure. This system rapidly removes heat, enabling continuous operation under high-power conditions.

Energy storage system testing requires highly stable load conditions; otherwise, test data may be inaccurate.
High-stability resistor modules possess the following characteristics: stable power output; stable temperature characteristics; and reliable long-term operation. This ensures stable power output and reliable test data during load testing.

Yes, this load bank supports: local control; remote control; and integration with automated testing systems.
Engineers can use the control system to: remotely start/stop; adjust power; and automate test programs. This is crucial for automated testing platforms for energy storage systems.

The 3300kW AC load bank is not only suitable for energy storage systems, but also for:
(1) Photovoltaic energy storage system testing;
(2) Wind power energy storage system testing;
(3) Microgrid system testing;
(4) PCS R&D testing;
(5) Battery discharge testing.

Load banks are typically used in the following stages:
(1) Factory Acceptance Testing (FAT): Verifying the performance of the PCS and energy storage equipment;
(2) Field Acceptance Testing (SAT): Verifying the system's performance in a real environment;
(3) System Maintenance Testing: Periodically testing the health status of the energy storage system.

In large-scale energy storage systems, the PCS AC output voltage is typically high. Load banks supporting the 950Vac voltage level can:
(1) Directly match the PCS output voltage;
(2) Reduce additional transformer equipment;
(3) Improve testing efficiency;
Especially suitable for large-scale energy storage power station testing environments.

Energy storage systems require long-term stable operation in actual operation; therefore, continuous operation testing is essential during the commissioning phase.
Load banks can support: long-term discharge testing; full-power operation testing; stability verification; thereby ensuring the reliability of the system under real-world operating conditions.

Using load banks for energy storage system testing offers the following advantages: provides a stable and controllable load; is independent of the actual grid load; allows testing at any time; and provides a safe and controllable testing environment; thus, it has become a commonly used testing device in the energy storage industry.