The harm of excessive reactive power compensation of generator

Generator reactive power compensation is an important part of the power system. It plays a role in optimizing the power factor of the power system and improving the quality of power. However, if the reactive power compensation of the generator is too high, it will bring a series of hazards and problems. There are many hazards of excessive reactive power compensation of the generator, such as the following points.

The harm of excessive reactive power compensation of generator

1. Reduced grid capacity

When the reactive power compensation of the generator is too high, the total reactive power of the power grid will increase, but the active power will not increase accordingly. This will reduce the effective power supply capacity of the power grid, making the power grid prone to voltage or frequency fluctuations when facing heavy loads, and even cause power equipment failure.

1. Reduced system energy efficiency

During the operation of the generator, excessive reactive power compensation will cause the active power in the system to decrease, which will affect the power generation capacity of the generator set and reduce the energy efficiency of the entire power system. This will lead to energy waste and increased electricity bills.

1. Power system stability declines

Excessive reactive power compensation of generators will have an adverse effect on the stability of the power system. Due to excessive reactive power compensation, problems such as voltage instability and current fluctuations may occur in the power grid, leading to failure of power equipment. This will not only cause a waste of electric energy, but also may bring safety hazards to users.

1. Grid voltage imbalance

When the reactive power compensation of the generator is too high, it may cause voltage imbalance in the power grid. This is because the reactive power caused by the excessive reactive power compensation of the generator cannot be balanced in the power grid, resulting in voltage instability, bringing unstable voltage fluctuations to electrical equipment, thus affecting normal power consumption.

1. Increased power transmission losses

Excessive reactive power compensation of the generator will lead to increased transmission losses in the system. The increase in reactive power will lead to a decrease in voltage in the power grid, and the decrease in voltage will lead to an increase in current, thereby increasing line losses in power transmission and reducing the transmission efficiency of electric energy.

Excessive reactive power compensation of generators may bring a series of hazards. We should reasonably optimize the settings of reactive power compensation devices to better optimize the power system, improve the quality of power, and ensure the safe operation of the power system.