How Electricity Generation Matches Consumption?

Following the law of conservation of energy, when energy storage devices like batteries and pumped storage are used as electrical equipment, there are no energy storage devices in the circuit. Therefore, the amount of electricity generated at any moment is equal to the amount of electricity used plus power losses. Thus, if no electrical appliances are in use, the generator will not generate electricity, and the energy consumed is entirely used for losses. In China's power grid, the frequency of electricity generation is controlled by the rotational speed of steam turbines. Due to the large size of the grid system, fluctuations in electrical load are fed back to each power plant, which then makes precise adjustments.

To better answer everyone's questions, Dingbo Power Generator Manufacturer uses the common diesel power generation system in factories and the power grid system as examples for illustration.

Diesel Generator System

Many units and factories purchase diesel generator sets as backup power sources, which serve as power generation equipment during power outages. When a diesel engine first starts, the main switch at the load end is disconnected. It is only after the generator output voltage stabilizes for tens of seconds that the load is connected. So, where does the electricity generated by the generator go during this process? Since the circuit at the end of the generator is not closed and has no load, there is voltage at the generator output terminal but no current is generated.

Therefore, the energy consumed is mainly used in two aspects:

1.The diesel engine and generator require energy to start.

2.Both the rotation of the diesel engine and the generator involve energy losses.

This means that after the generator is running stably, if no electrical appliances are in use, the generator will not generate electricity. At this time, the control system will reduce the diesel engine throttle and operate at the minimum load, with the consumed energy being entirely used for mechanical losses.

Power Grid System

In China's power grid system, first of all, the grid system controls the power generation frequency to keep it around 50Hz. Because the grid system is relatively large, there is no situation where the total load is zero during operation. After considering power transmission losses as normal power consumption, the amount of electricity generated is always equal to the amount of electricity used. For a power system, electrical load is related to time. For example, around 7 o'clock every evening is the peak period of electricity consumption. Power dispatching will estimate the electricity demand throughout the day and then distribute the power generation amount to each power plant.

If you insist on asking: What happens if we reduce the number of electrical devices while increasing power generation?

You just need to remember that "the amount of electricity generated is always equal to the amount of electricity used". In this case, the electrical devices in use will share all the generated electricity. The result is that the grid voltage will rise, and the power consumption of individual electrical devices will increase. Beyond a certain range, if the power plant does not actively reduce the power generation, it may cause some electrical devices to be damaged.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to [email protected] we will pay highly attention on your question.