The main reason why the nighttime electricity bill is only half price is that the generator of the power station cannot be turned on and off at will. This practice is also called time-of-use electricity pricing method. .
There are hundreds of tons of water and steam in the power plant's boiler, with a temperature of 300 to 600°C. The huge steam turbines are also at this temperature, and it's not easy. cool them. At the same time, the rotors of steam turbines and generators weigh tens of tons and spin at 3,000 rpm. The enormous thermal inertia and dynamic inertia of both make it difficult to shut down the generator in just a few hours. If it is stopped, it will take longer to start.
Therefore, it is not possible for a power plant to turn off the machines at night and turn them back on in the morning. Samee if you want to produce less electricity at night, you will have to pay a very high price by reducing the efficiency of electricity production. Therefore, increasing electricity consumption at night is an effective measure to save power grid energy and reduce emissions.
Detailed information:
Uncertain factors in the formulation of the time-of-use electricity price law
(1) Wind power, load characteristics of users and simulation
Wind energy Output is directly related to wind speed, wind speed over a day often has random and intermittent characteristics, but if wind speed is analyzed on a scale of longer time, such as month, season and year, it can be seen that the wind speed also shows characteristicsseasonal ics, and the average wind speed does not change during a fixed month, showing a certain periodicity.
According to the seasonal characteristics of wind speed, appropriate adjustment of the electricity tariff plan according to the time of use in different months or quarters is conducive to the consumption of 'wind power. In order to construct a wind power generation model, this paper adopts the method of first simulating the wind speed and then converting it to wind turbine output, which can be replaced by the existing historical production data in practical applications.
(2) Price elasticity coefficient of user demand
Many factors affect user load, such as electricity prices, weather conditions, national economy, production methods, etc., among which the most important factor andmore exploitable is the price of electricity. Electric power has the same common characteristics as commodities, and there is generally an inverse relationship between demand and price.
Baidu Encyclopedia - Electricity prices based on time of use