Advantages and Disadvantages of Low-Voltage Dry-Type Filter Reactors

The main function of the low-voltage dry-type filter reactor is to provide reactive power through inductive elements, thereby improving the power quality of the power grid. Its working principle is based on the interaction between inductance and capacitance. When the alternating current passes through the reactor, the current in the reactor causes a phase shift, which effectively suppresses the generation of high-frequency harmonics.

The low-voltage dry-type filter reactor is a common power equipment used to filter out harmonics in the power system, especially in the distribution system. It has several notable advantages and disadvantages:

I. Advantages of Dry-Type Low-Voltage Filter Reactor:

1. Simple structure: The design of the low-voltage dry-type filter reactor is relatively simple, making it easy to install and maintain.

2. No oil pollution: Unlike oil-immersed reactors, dry-type reactors do not use oil, thus reducing the risk of leakage and offering better environmental protection.

3. Excellent heat dissipation: Due to its dry design, it has excellent heat dissipation capabilities and is less likely to experience overheating issues.

4. Low maintenance cost: Dry-type reactors do not require regular checks on the oil quality and oil level like oil-immersed reactors, resulting in less maintenance workload.

5. Strong adaptability: Suitable for humid environments, high altitudes, and situations that are prone to external environmental influences.

6. Fast response: When there is a change in dynamic load, the dry reactor responds very quickly.

II. Disadvantages of Dry-Type Low-Voltage Reactors:

1. Larger in size: Due to the internal structure of dry-type reactors, they usually have a larger volume and may require more installation space.

2. Limited operating temperature range: Although it has good heat dissipation performance, the dry-type reactor's performance may deteriorate in extremely high temperature environments. Therefore, it is not suitable for extremely hot conditions.

3. Higher cost: Compared to other types of reactors, the manufacturing cost of dry-type filter reactors is usually higher, especially for high-power reactors.

4. Higher energy loss: Although it is generally more efficient in most cases, compared to oil-immersed reactors, the energy loss of dry-type reactors is slightly higher.

5. Larger size and heavier weight: Due to the absence of oil-immersed cooling, dry-type reactors are generally heavier than oil-immersed reactors and this factor needs to be taken into account when considering transportation and installation difficulties.