As a crucial link connecting energy production and consumption, the standardized operation methods of energy storage systems directly affect equipment safety, system performance, and lifespan.Given the complexities of energy storage involving high-voltage electrical, electrochemical, and thermal management processes, operators must adhere to rigorous procedures and technical requirements to ensure stable and reliable charging, discharging, and energy dispatching under various operating conditions.
Adequate preparation and safety checks should be conducted before operation. It must be confirmed that the energy storage system is in an operational condition and has undergone maintenance, and that all protection devices, monitoring instruments, and communication systems are functioning normally. Checks include the integrity of the communication links between the Battery Management System (BMS) and each module, accurate temperature and voltage sampling, normal operation of cooling or heating equipment, and insulation and grounding tests of the high-voltage circuit to prevent leakage or short-circuit risks. The working environment should be clean, well-ventilated, and equipped with fire-fighting equipment and emergency isolation devices that are readily available and ready for immediate use.
Startup operations must be performed in the established sequence. Generally, the cooling or environmental control system should be activated first to bring the temperature inside the compartment or cabinet to a suitable operating range. Then, the battery management system and energy management system (EMS) should be started sequentially, and the system self-test information and parameter configurations should be verified. Only after confirming there are no alarms can the main circuit switch be closed to enter standby or grid-connected mode. If the system is connected to the power grid or microgrid, synchronization conditions and communication protocols must also be verified to avoid impacts caused by phase or frequency differences.
Charging and discharging processes should follow preset strategies and limits. Operators need to set upper and lower limits for state of charge (SOC), charge/discharge rates, and temperature protection thresholds according to the application scenario to prevent deep overcharging or over-discharging from accelerating cell aging or causing safety risks. The real-time monitoring interface should continuously observe the changing trends of voltage, current, temperature, and individual cell internal resistance. Abnormal fluctuations should be analyzed promptly, and measures such as power reduction, suspension, or switching to protection mode should be taken. For systems participating in frequency regulation or rapid response, short periods of high-rate operation are permissible, provided the cell health is ensured, but the cumulative frequency and duration must be strictly controlled.
Shutdown and isolation operations also require standardized procedures. First, external loads or dispatch commands must be stopped to allow the system to enter a state of gradual discharge or natural decay. Once the power reaches zero, the main circuit switch should be disconnected, followed by the sequential shutdown of the EMS and BMS, and finally, the cooling or temperature control equipment should be shut down. For systems with prolonged shutdowns, protective charging or discharging should be performed to maintain the cells within a suitable intermediate SOC range, and periodic status checks should be conducted to prevent capacity drift or consistency degradation. Environmental monitoring must be maintained during shutdowns to prevent abnormal temperature and humidity or foreign object intrusion.
Emergency response must be carried out according to the contingency plan. In case of abnormalities such as over-temperature, over-voltage, insulation failure, or smoke, the emergency shutdown procedure should be initiated immediately, the faulty unit quickly isolated, the fire extinguishing system or smoke extraction device activated, and professional personnel notified to investigate the cause. All operational steps should be recorded in detail, including time points, parameter changes, and measures taken, for subsequent analysis and traceability.
In general, the operation of energy storage systems emphasizes thorough preparation, rigorous sequence, parameter compliance, and process control. By strictly implementing standardized procedures and strengthening personnel training, operational risks can be effectively reduced, equipment lifespan can be extended, and its continued safe and efficient supporting role in the energy system can be ensured.