The role of reactive power compensation - Solutions - Huaqiang Electronic Network

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As a very critical part of the current grid operation, reactive power compensation plays an irreplaceable role for the stable operation of the grid in the current period. It is the abbreviation of reactive power compensation, which is a kind of reactive power generated in grid operation. Specific power compensation, through the use of reasonable compensation devices to compensate for this reactive power factor, can effectively improve and optimize the distribution network's own operating environment, and the various losses in its operation can also be effectively controlled. The following is a theoretical discussion of this reactive power compensation:

First, analyze the reactive power in reactive power compensation. In the specific operation of the power grid, two kinds of powers, active power and reactive power, must be generated, and the active power can convert the electrical energy into other various forms such as thermal energy, light energy, mechanical energy, etc., thereby maintaining the power. The electrical equipment performs normal operation; the reactive power does not need to consume electrical energy, but uses the magnetic field and the electric field existing inside the circuit to work, providing the required electric power for the normal operation of the electrical equipment, and the electric power is maintenance. The main support of the magnetic field. Reactive power is an inevitable product in the operation of the power grid, and it is also the basic guarantee for the operation of most electrical appliances (such as transformers, motors, transmission lines, fluorescent lamps, reactors, etc.), it is not useless, but it is very important. There is value. However, the existence of such power does have some adverse effects, and reactive compensation must be performed.

Secondly, as far as the adverse effects of reactive power are concerned, on the one hand, in the process of satisfying the requirements of the electrical equipment for the magnetic field, the reactive power will continuously transmit the reactive power, which will lead to these transformers, motors, etc. The continuous loss of electrical energy, resulting in the system can not get the economic benefits. Moreover, the existence of reactive power must occupy the position of active power, so that the active power output of the electrical appliance is reduced, and the electrical energy conversion capability is reduced. At the same time, the reactive power will increase the voltage drop of the transformer and related lines, so that the voltage in the power grid is in an unstable state. On the other hand, reactive power and active power together constitute apparent power. This apparent power is proportional to the current. When reactive power is increased while the active power remains unchanged, the apparent power is increased. Large, which led to an increase in current, eventually caused transformers, generators, wires and other equipment to increase capacity.

Third, as far as compensation for reactive power is concerned, it is mainly a compensation measure taken to avoid the reactive power affecting the normal operation of the power grid. On the one hand, by increasing the load power factor of the system and reducing the load and capacity of the power equipment and lines, the staff can make various equipments improve their working efficiency on the basis of reducing the power consumption. On the other hand, reducing reactive power can stabilize the voltage value of the power grid, reduce power loss, and improve power quality. Eventually, the entire power system can effectively resist various interference operation factors and improve system operation. Stability performance.