Application Of Reactive Power CompensationTechnology In Mine Power Supply System

Application of reactive power compensation technology in coal mine power supply systems

  In actual production, coal mine power supply system equipment includes three-phase asynchronous motors and transformers. These equipment often generate inductive loads in the power supply, and the loads will carry out useless work in the power supply, causing impulsive reactive loads to the power supply system, thus affecting the power supply. In addition, under the influence of reactive current, problems such as leakage and short circuit may occur in the power supply lines in the mine, which may affect the normal development of mining work. In serious cases, it may also threaten the life safety of construction workers. Therefore, it is necessary to adopt reactive power compensation technology to minimize the impact of mine power supply on the power grid and ensure the smooth progress of mine production.

Application of reactive power compensation technology in functional loss

  In coal mine power supply systems, the power factor in AC lines is a measure. Reactive power not only has a significant impact on power supply companies, but also has a corresponding effect while meeting the needs of enterprises. Therefore, power supply companies will also be affected to a certain extent.

（一）During the operation of coal mine machinery and equipment, in order to ensure safe production in coal mines, the stable operation of power supply equipment must be guaranteed. Through reactive power compensation, excessive power is effectively prevented, thereby improving the power supply quality of the line and reducing power losses.

（二）During operation, some reactive power may occur and even cause other potential problems, affecting the voltage fluctuations of the coal mine power supply system and causing instability of the mine power supply system. Therefore, applying reactive power technology to coal mine power supply systems can suppress harmonics and protect equipment and lines in power supply, thereby ensuring the stability of power supply. Therefore, coal companies should strengthen the utilization of coal resources to ensure their scientificity, safety and efficiency.

（三）In the actual operation of power supply, scientifically plan the location of the substation in power supply, and at the same time use reactive power compensation technology to achieve optimal compensation for the power supply system.

Reasonably select the wiring method of filter reactors and capacitors

In the mine power supply system, when adopting air-core reactance technology, air-core reactors should be used. The advantages of air-core reactors are that the magnetic permeability of the magnetic circuit is constant, is not affected by the load current, and the inductance value is stable. Therefore, in large-scale power supply systems such as mines, it is especially suitable for cooperating with the capacitance of the system to form a series resonance device. More importantly, the equipment has a simple structure, simple process, and good heating performance, making it easy to use.