I. Power and Voltage Levels
1. Low-Voltage Distribution Room: This typically refers to distribution equipment with a voltage level of 1000V or below, especially 400V distribution rooms connected to station transformers with 10kV or 35kV input. Its power capacity is relatively small and primarily used for distributing power to end users, households, and direct equipment.
2. High-Voltage Distribution Room: This denotes distribution equipment with a higher voltage level, usually ranging from 6kV to 10kV. It has a higher power capacity and can manage the distribution of electrical energy over a larger area.
II. Application and Function
1. Low-Voltage Distribution Room: Widely used in industrial enterprises, public buildings, and residential areas, the primary function is to transfer electrical energy from high-voltage substations to various user devices. With its simple structure, low power, and lower current density, the system provides high supply reliability, making it a critical part of the power system.
2. High-Voltage Distribution Room: Commonly found in substations or industrial power distribution systems, its main function is to convert high-voltage power into low-voltage power for industrial or residential use. The high-voltage distribution room contains numerous devices, including transformers, switchgear, and instruments, to perform functions such as control, protection, measurement, and monitoring.
III. Equipment Characteristics and Safety
1. Low-Voltage Distribution Room: Although the voltage is relatively low, and the risk of electric shock is smaller, potential hazards remain, such as poor circuit contacts or aged equipment, which may lead to short circuits or leakage. To ensure safety, workers are still required to wear protective equipment like insulated boots.
2. High-Voltage Distribution Room: Known for its safety, reliability, environmental compatibility, and energy efficiency, it optimizes the grid structure, reduces power losses, and enhances power quality, thus achieving efficient energy use. Additionally, high-voltage distribution rooms are highly secure and can operate stably in hazardous environments, ensuring power reliability.
IV. Other Differences
1. Voltage Transformation: Low-voltage distribution rooms mainly aggregate local incoming switch cabinets for power distribution, whereas high-voltage distribution rooms involve the process of receiving high-voltage power and converting it into low-voltage power. This includes input and output bus switchgear.
2. Maintenance and Management: Both low-voltage and high-voltage distribution rooms are critical facilities for power supply. Proper maintenance and management are essential to ensure a stable power supply. Routine preventive testing and inspection are required to ensure the equipment’s normal operation and power supply stability.
In summary, low-voltage and high-voltage distribution rooms differ significantly in terms of power, voltage levels, application scenarios, function, equipment characteristics, and safety. These differences enable each to play distinct roles in the power system, jointly supporting the stability of the power supply.