Electricity is a special good that cannot be stored. Use and production take place at the same time. The power plant produces as much electricity as the user consumes, no more, no less. If the power plant produces more electricity than users consume, the voltage frequency will increase, causing damage to users' devices. If the power plant produces less electricity than the users consume, the voltage frequency will decrease and the users' devices will not work properly.
In order to ensure that users use qualified energy, in addition to a scientific and reasonable dispatch system, the power system should also have sufficient abundant power supply or emergency power supply if the user suddenly unloads tens of thousands. kilowatts or hundreds of thousands of kilowatts, Even if the loadis several million kilowatts, the power plant will simultaneously reduce the load by tens of thousands of kilowatts, hundreds of thousands of kilowatts or even millions of kilowatts if the user suddenly increases the load; tens of thousands of kilowatts, hundreds of thousands of kilowatts or even millions of kilowatts, the power plant will have to simultaneously increase loads of tens of thousands, hundreds of thousands or even millions of kilowatts.
Hydroelectric plants and pumped energy storage power plants are responsible for regulating peaks and troughs in power. The driving force of hydroelectric power plants is water. It is very convenient to adjust the amount of water by adjusting. the runner's angle. It can increase zero load to tens of thousands of kilowatts, hundreds of thousands of kilowatts or millions of kilowatts in seconds, and it can also rreduce the load of millions of kilowatts and hundreds of thousands of kilowatts. to zero charge in seconds.
Pumped energy storage power plants pump and store water when energy is abundant, and release water to generate electricity when energy is insufficient, exploiting thus fully water resources
Therefore. , the hydroelectric plant is responsible for peak shaving, frequency regulation and better operation.
It is. The production (generation), transmission (power supply and distribution) and consumption (energy consumption) of electricity are carried out simultaneously. This is different from food or oil, which can be stored in warehouses. Currently, there is no relatively efficient method for storing electricity on a large scale, so the operation of the electricity systemElectricity presents extremely high dynamic and real-time requirements. Production and transport links must be regulated in real time according to the evolving situation. load. This is called power distribution.
Of course, there are also methods for storing electricity. For example, pumped storage uses water pumps to pump water back to the reservoir during the idle period. When electricity generation is needed, the water from the reservoir is then released to use hydroelectricity to produce electricity. But this storage actually requires an energy conversion (electrical energy – potential energy of water – electrical energy). There is also today's flywheel energy storage technology, which uses electrical energy to spin the flywheel at high speeds. When it is necessary to generate electricity, the flywheel ist decelerated and is in the power production state. follows: electrical energy - kinetic energy of the flywheel - electrical energy.