How to determine whether it is suitable to install industrial and commercial energy storage
With the increasing global attention to green production, more and more companies have begun to turn their attention to the field of sustainable development. With its excellent environmental protection performance and energy-saving effect, the integrated industrial and commercial energy storage cabinet has become an important tool for enterprises to achieve green transformation; and according to the growing demand, how to judge whether the factory is suitable for installing an integrated industrial and commercial energy storage cabinet can be considered from the following aspects.
Power consumption characteristics
Electricity Consumption Characteristics
1. Analyze the Electricity Price
2. Analyze the Electricity Consumption Situation
Secondly, attention should be paid to the total electricity consumption on the electricity bill, which reflects the overall electricity demand of the factory area. If the total electricity consumption is low, the scale of energy storage construction will be limited by the electricity demand, which may mean that the investment return period of the energy storage integrated cabinet will be longer. Meanwhile, it is necessary to pay attention to the electricity consumption in different periods on the electricity bill, especially the proportion of electricity consumption during peak hours. This helps to understand the fluctuation of the electricity demand in the factory area.
If the proportion of electricity consumption during peak hours is very small, it may mean that the electricity demand of the factory area during peak hours is not high, so the role of the energy storage integrated cabinet in peak shaving and valley filling may be limited.
3. Analyze the Transformer Situation
Finally, attention should be paid to the relevant information of the transformer on the electricity bill, especially the capacity and billing method of the transformer.
3.1. Total Transformer Capacity: If the capacity of the transformer is small, it may not be able to support a larger-capacity energy storage integrated cabinet. Therefore, when selecting an energy storage integrated cabinet, the actual bearing capacity of the transformer needs to be considered.
3.2. Transformer Billing Method: If the transformer is billed according to demand, the role of the energy storage integrated cabinet in reducing electricity bills may be limited. Because billing according to demand is usually calculated based on the actual electricity used, although the energy storage integrated cabinet can adjust the electricity demand to a certain extent, it cannot completely eliminate the electricity demand
Transformer Load
1. Load Volatility Analysis
1.1. Load Fluctuation Magnitude: One of the main functions of the energy storage system is to smooth the electricity consumption curve and reduce electricity cost. Therefore, if the load curve of the factory area fluctuates greatly, that is, there are obvious electricity consumption peaks and valleys, the introduction of the energy storage integrated cabinet will help balance the electricity demand and improve the electricity utilization efficiency.
1.2. Load Peak Hours: The energy storage integrated cabinet can release electricity during load peak hours, relieve the pressure on the power grid, and reduce electricity expenses. Therefore, if the load peak hours of the factory area coincide with the peak hours of the power grid electricity price to a high degree, the economic benefits of the energy storage integrated cabinet will be more obvious.
2. Transformer Load Situation
2.1. Remaining Capacity: When generating electricity during the valley and flat periods of the electricity price, it is necessary to ensure that the transformer has sufficient remaining capacity to charge the energy storage system. If the transformer load rate is already high, and combined with the load when the energy storage system is charging, it may exceed the rated load rate limit of the transformer, thus affecting the normal operation of the energy storage system. Therefore, it is necessary to analyze the load curve data to determine whether the remaining capacity of the transformer during the valley and flat periods is sufficient to support the charging demand of the energy storage integrated cabinet.
2.2. Load Rate Change: The change in the load rate will also affect the charging and discharging strategies of the energy storage integrated cabinet. If the load rate changes greatly, a more flexible control strategy for the energy storage system needs to be designed to adapt to different electricity consumption demands.
Power System and Connection
To determine whether it is suitable to install an industrial and commercial energy storage integrated cabinet from the power system diagram of the factory area, the analysis can be carried out based on the following key steps and points:
1. Power System Structure Analysis
1.1. Observe the capacity annotation of the transformer in the power system diagram to ensure that there is sufficient remaining capacity to charge the energy storage integrated cabinet. If the transformer capacity is close to full load, it may be necessary to consider upgrading the transformer or optimizing the power system structure.
1.2. Pay attention to the number of transformers and whether they form a redundant system. A redundant system can improve the reliability of the power system, but it may also increase the complexity of the connection of the energy storage integrated cabinet.
1.3. Determine the grid connection point of the energy storage integrated cabinet, which is usually located on the low-voltage side of the power system. Check the voltage level, current capacity and phase of the connection point to ensure that they match the technical specifications of the energy storage integrated cabinet.
1.4. Consider the location and number of grid connection points and whether they support the two-way power flow (charging and discharging) of the energy storage integrated cabinet.
2. Power System Stability and Security Evaluation
2.1. According to the power system diagram and the short-circuit current protection capability of the system, evaluate the impact of the connection of the energy storage integrated cabinet on the stability of the power system. If the short-circuit current is too large, additional protection measures may be required.
2.2. Check the configuration of overload protection devices (such as circuit breakers, fuses, etc.) in the power system to ensure that they can correctly protect the energy storage integrated cabinet from the influence of fault currents.
2.3. Evaluate the coordination between the protection devices (such as overcurrent protection, overvoltage protection, etc.) 自带 by the energy storage integrated cabinet and the protection devices of the power system.
2.4. Ensure that there is a clear grounding system in the power system diagram and that the grounding requirements of the energy storage integrated cabinet are met. Evaluate the lightning activity situation in the factory area and whether the energy storage integrated cabinet needs additional lightning protection measures.
Geographical Location and Environmental Conditions
1. Installation Location
The industrial and commercial energy storage integrated cabinet should be installed in a flat, dry, waterproof and fireproof location, avoiding direct sunlight to reduce the temperature of the equipment and prevent damage.
2. Ventilation Environment
A small amount of gas will be generated when the energy storage battery is in operation, so sufficient ventilation is required for exhaust. Therefore, the energy storage cabinet should be set in a well-ventilated area.
3. Other Environmental Factors
Flammable or explosive items should not be stored near the energy storage cabinet, and it is necessary to ensure that the ventilation system remains in operation to ensure the normal operation of the energy storage cabinet.
Technical Feasibility and Economic Evaluation
Technical Feasibility Evaluation: The technical performance of the industrial and commercial energy storage integrated cabinet should be evaluated to see whether it meets the actual needs of the factory area, such as energy storage capacity, charging and discharging efficiency, safety performance, etc.
Economic Evaluation: A comprehensive analysis should be conducted on the investment cost, operation cost and expected earnings of the energy storage system to judge its economic feasibility. This includes considering the purchase cost, installation cost, maintenance cost of the energy storage system as well as the possible electricity bill savings and subsidy income.
Summary
In conclusion, to determine whether a factory area is suitable for installing an industrial and commercial energy storage integrated cabinet, multiple aspects such as electricity consumption characteristics, transformer load, power system and connection, geographical location and environmental conditions, as well as technical feasibility and economic evaluation need to be comprehensively considered. Through a comprehensive assessment of these factors, a scientific basis can be provided for enterprise decision-making.