As far as power supply companies are concerned, both residential and business use are equally important. Nowadays, there are very few large-scale and long-term power outages in the country. This is inseparable from the on-demand planning of the power supply company, the development of emergency power generation plans, and the construction of a strong power grid.

It is reported that in the face of large enterprises, hospitals, banks, etc., which have particularly high requirements for power supply stability, from the beginning of the power supply plan design, they will communicate with the enterprise or building construction party to understand the future power demand, including the reliability demand, so as to Provide them with different power supply schemes.

If it is the N-1 power supply mode (there are two transmission lines between the two substations, commonly known as "dual loop power supply"), then a set of intelligent distribution network system will be built. Once a failure occurs, the system can be within 300 milliseconds Switch to another system to resume normal power usage.

If there is an N-2 or N-3 power outage (two or three failures occur at the same time, so that there is no way to switch power), the power supply company will also provide some emergency power generation resource support to ensure the power consumption of key power users.

According to relevant experts from the State Grid, my country’s major cities like Beijing and Shanghai are now benchmarking the reliability of power supply with major cities such as Tokyo and Paris. The China Electricity Council also has an evaluation index for reliable electricity use in foreign cities, including rural areas. In comparison of performance indicators, our country’s electricity reliability is among the top in the world.

Article information source-cable network