How much electricity can be generated is not up to the power station. For example, if you build a 600MW power station, if you can decide how much electricity to generate by yourself, only limited by the total load of the power grid, then it is completely equivalent to a printing machine.

In fact, it is the power grid that controls and determines the load of each power station and the number of hours on the Internet. The power grid also determines how much power generation income each power station can get. Just like you can't make a refrigerator, you have to sell it in Suning Gome. For example, if I ask you to participate in an activity, you have to participate, otherwise you are not allowed to sell it in my store.

Of course, there are many specific situations. For example, the power station provides heat at the same time, and the heating income is also part of it. Moreover, heating is subsidized by cash or online time (otherwise no one wants to heat), and it is also possible that the power load will drop, and the power station can heat more without worrying about excessive power.

What is a typical process of power change?

1. If the load distributed by the power grid increases, then in an instant, the torque of the steam turbine and generator shafting increases and the speed decreases, as if you suddenly have a heavy burden, then the pace will slow down.

Because the domestic power grid frequency is fixed at 50HZ, that is, the generator must be 3000 rpm or 1500 rpm. At this time, the speed probe detects that the speed is low, so the signal is transmitted to the control system. After calculation, the system will send a command signal to the steam turbine: Give some force! Therefore, the control valve of the steam turbine is opened up and more steam is introduced. Then increase the speed of the steam turbine to restore the speed of the shafting.

So as to achieve the effects of increasing power generation and keeping the rotating speed constant.

2. The same is true for load shedding. When the load is reduced, people will be excited and the steam turbine will turn faster. Then the speed probe tells the control system. The system sends a signal to the steam turbine: Don't take drugs, don't get excited, and slow down. When the turbine regulating valve is closed, the steam intake decreases, the turbine is calm and the speed decreases.

So as to reduce the power generation and keep the rotating speed constant.

For hydropower stations, the turbine head can also adjust the power generation.

So, on the whole, there is no such trouble as what to do if there is too much electricity.

Of course, the specific situation is very complicated, such as nuclear power, biomass energy, green energy, solar energy, wind energy, etc., which are encouraged by policies or poorly regulated, and may rarely limit their power generation, even if the demand for electricity is reduced. It's hard to say, it depends on the policy and the strategy of the power grid.

In other words, if the grid connection of solar energy and wind power is limited, if there is too much power generation, some of their loads may be directly cut off to ensure the safety of the power grid.

In addition, there are some ways to store electricity, such as pumped storage.