How many large power grids are there in China now?

Hello! China has three main power grids. Many students majoring in electrical engineering, even those who have already worked in the power grid, only know the two major domestic power grid companies: State Grid Corporation and China Southern Power Grid Corporation. State Grid Corporation covers 26 provinces (autonomous regions and municipalities directly under the Central Government) and China Southern Power Grid Corporation covers 5 southern provinces (autonomous regions).

But in fact, there is also a provincial local power company in China: Meng Xi Power Grid.

Meng Xi Power Grid is just the abbreviation of people, and its real name is Inner Mongolia Electric Power (Group) Co., Ltd. Let's take a look at the official introduction: Inner Mongolia Electric Power (Group) Co., Ltd. is a super-large state-owned power enterprise directly under the autonomous region, responsible for the construction and operation of the power grid in the central and western regions of the autonomous region, with a power supply area of 720,000 square kilometers and undertaking the industrial, agricultural and animal husbandry production in eight autonomous regions and the power supply tasks of13.88 million urban and rural residents.

Meng Xi Power Grid is the only independent provincial power grid management enterprise in China and the only state-owned super-large power grid management enterprise under the Inner Mongolia Autonomous Region government.

A simple comparison can be made here:

The operation area of the State Grid covers more than 88% of the national territory, and the population of power supply service exceeds 1, 654,380+billion.

The power supply area of China Southern Power Grid is 65.438+0 million square kilometers, with a total population of 230 million.

The power supply area of Meng Xi power grid is 720,000 square kilometers, and the power supply population reaches13.88 million.

Although Meng Xi Power Grid may be slightly inferior in population, there is not much difference between Meng Xi Power Grid and China Southern Power Grid in power supply area. Therefore, some people call Meng Xi Power Grid the third largest power grid in China.

Explain what an independent power grid is.

Internationally, independent power grid refers to all power grids with self-contained functions, which are widely used in oil drilling, ships, small self-contained power stations in enterprises, field operations and other industries.

In China, the concept of independent power grid puts more emphasis on the attribute positioning of power grid, which is a general term for all local power grids that are not affiliated to the State Grid and China Southern Power Grid. This independence includes asset independence, generation and transmission independence, scheduling independence and pricing independence. (This article was originally created by WeChat WeChat official account "Electric Youth", welcome to search for attention)

The question now is, why does Meng Xi Power Grid exist independently of the State Grid?

There are various reasons for inconvenient development, but one of them may be because the Inner Mongolia plate is long and narrow, surrounded by North China Power Grid, Northwest Power Grid and Northeast Power Grid. If it is merged into the state grid, it will be merged with these three power grids respectively, which will bring inconvenience to the unified distribution in Inner Mongolia.

Therefore, East Inner Mongolia, namely East Inner Mongolia Electric Power Co., Ltd., is a provincial electric power company under State Grid Corporation. Inner Mongolia Electric Power (Group) Co., Ltd. operates independently in the central and western regions of Inner Mongolia.

In fact, there are many local power companies in China:

1, Shanxi local electric power co., ltd

The power supply point comes from its own thermal power station. The power supply business area of Geotechnical Company includes 12 counties (districts), with a total population of about 28 10000 people and a total area of about 20000 square kilometers.

2. Sichuan Hydropower Investment Management Group Co., Ltd.

Small and medium-sized hydropower stations are the main power supply points, covering11counties in Sichuan Province.

3. North Xinjiang Power Grid (Shihezi Independent Power Grid of Corps)

Covering the sixth, seventh, eighth and ninth divisions of the Corps, the installed capacity is mainly thermal power stations and thermal power stations.

4. Shaanxi Local Electric Power (Group) Co., Ltd.

Mainly small thermal power (installed capacity is 26 1 10,000 kilowatts), covering 66 counties (districts) in 9 cities including Yulin City, accounting for 72% of the province's land area and 5 1% of the province's total population.

5. Jilin local hydropower co., ltd

It mainly uses small hydropower as the power supply point, covering Jilin, a mountainous county in the east, including Antu, Changbai, Fusong, Jingyu, Linjiang and Tonghua.

6. Guangxi Water Conservancy and Electric Power Group Co., Ltd.

Small hydropower is the main power supply, and the independent power grid covers 43 counties (cities, districts) in Guangxi.

7. Yunnan Baoshan Electric Power Company Limited by Share Ltd.

The main small hydropower stations are power sources, covering Yongchang, Tengchong, Longling, Shidian and Changning.

8. Guangxi Guidong Electric Power Co., Ltd.

Guangxi Guidong Electric Power Company (formerly Hezhou Electric Power Company), whose power supply business covers 6 counties, 3 cities and 2 mines in Guidong area, exchanges power with Yunan County, luoding city County of Guangdong Province and neighboring Jiangyong County, Jianghua County and Yongzhou City of Hunan Province, forming a relatively complete regional power grid.

9. Guangxi Baise Electric Power Co., Ltd.

Mainly small hydropower with a total installed capacity of 300,000 kilowatts, it undertakes the power supply tasks of more than 40 factories and mines in 7 counties (districts) of Tian Yang, Tiandong, Pingguo, Tianlin, Lingyun, leye county and Youjiang.

10, Hubei Danjiang Electric Power Co., Ltd.

Mainly taking small hydropower as the power supply point, it undertakes the power grid planning, construction, operation, maintenance and power supply business tasks of 2/kloc-0 towns and offices in the city.

1 1, Chongqing Three Gorges Hydropower (Group) Co., Ltd.

It is also an independent power grid with small hydropower as the main power supply point. The main power supply area is Wanzhou District, Chongqing.

12, Shenzhen Merchants Power Supply Co., Ltd.

Power supply is introduced from Hong Kong through submarine cables. The power supply areas are mainly Shekou Industrial Zone, Chiwan Port Area and Bay Logistics Park, with a population of about 65,438+10,000.