China's smart grid accelerates the development of intelligent residential power consumption

"Smart grid" is a hot topic at present. This year's government work report pointed out that it is necessary to strengthen power consumption management and develop smart grid and distributed energy. According to the 12th Five Year Plan for the development of the Internet of things, during the 12th Five Year Plan period, the Internet of things focused on nine fields, such as smart grid, intelligent transportation and intelligent logistics. Among them, the total investment of smart grid is expected to exceed 2 trillion yuan, ranking first in the top ten fields. It is expected that the industrial scale of core technology will reach 200 billion yuan by 2015. The next 10 years will be a golden decade for the construction and development of smart grid.

Smart grid is actually a larger concept than modern power system. It includes renewable energy power generation, large capacity and long-distance intelligent transmission network, as well as intelligent distribution and intelligent power consumption. At present, China has the world's largest energy network and remote measurement and control terminal. Moreover, urbanization and industrialization will still be in a period of rapid development in the next 20 years. It is a rare historical opportunity to occupy the commanding height of the industry to promote the great leap forward intellectualization of China's energy system and drive the international transformation of intelligent network. In order to truly realize the practical functions of remote home, power payment and community value-added services, and truly realize the intelligent power consumption with easy function, users want to use and scale promotion value, all provinces and cities in China have carried out the construction of smart grid one after another.

Hubei: speed up the construction of smart grid and improve the ability of "borrowing electricity"

The construction of smart grid in Hubei Province is speeding up. In order to make it more convenient for residents to use electricity, the power supply department will erect charging columns in some residential areas for the main charging of electric vehicles, so as to avoid the embarrassment of "carrying cars upstairs" or "discharging downstairs". At present, Hubei power grid forms inter provincial transmission links with Henan, Hunan, Jiangxi, Sichuan and Chongqing provinces (cities) through 14 500 kV high-voltage AC lines, so as to improve the "borrowing" capacity of Hubei Province to other provinces.

Ningbo: the power consumption of residents can be accurate to every day

The Yinzhou Rural Power Grid intelligent comprehensive pilot project in Ningbo, Zhejiang Province has passed the acceptance of the State Grid Corporation of China, which is the first smart grid pilot project in East China. Yinzhou District and Haishu District are the pilot units of Ningbo smart grid construction. After the smart grid is completed, the power consumption of residents can be accurate to every day, and residents can print the daily power consumption in the power business hall. Smart grid also has the ability of "self-healing", which can automatically isolate the fault point and restore the power supply of other users within a few seconds, so as to reduce the power outage time and the number of power outage users.

Chengdu: smart grid built to solve the problem of difficult payment for residents

Since 2010, Sichuan electric power company has increased investment in power grid construction, and has invested 16.6 billion yuan to implement the "strong smart grid project" in Chengdu. Through the construction of the "strong smart grid project", it has piloted the construction of digital substation, intelligent distribution network with self-healing and compatible characteristics, vigorously promoted smart meters, and continued to transform power grid equipment, Provide strong power guarantee for Chengdu's economic development. After the construction of smart grid, Chengdu will vigorously promote the transformation of "one household, one meter" and the installation of smart meters, and 1 million households will install smart meters. The level of residents' intelligent power consumption will be greatly improved, and the problem of residents' power payment will also be solved.

Jiangsu: smart meters promote the application of residential electricity to achieve intelligent interaction

This year, Dongtai City, Jiangsu Province plans to complete the promotion and application of 148500 smart meters to realize the intelligent interaction of residents' electricity consumption. The promotion and application of smart meters is an important part of the high-quality service of "family power, happy people's livelihood" carried out by the municipal power supply company this year. Intelligent electric energy meter is a new type of all electronic electric energy meter. Compared with ordinary electric energy meters, intelligent electric energy meters focus on expanding the functions of information storage and processing, real-time monitoring, automatic control and information interaction on the basis of basic metering functions, and support the actual needs of two-way metering, step price, time-of-use price and peak valley price. It is also the realization of distributed power metering Two way interactive service, smart home and smart community. The popularization and application of smart meters is of great significance to promote the construction of smart grid.

Shaanxi: smart grid serves the public and realizes remote meter reading without leaving home

Since this year, Shaanxi Changzhi has carried out the replacement of smart meters in an all-round way. By the end of this year, 278000 smart meters will be installed in place, realizing the replacement of smart meters for residents in the city within five years, and fully realizing the collection of meter information. Sitting in front of the computer and clicking the system interface with the mouse, you can collect the power consumption information data of tens of thousands of terminals. It takes only a few minutes to analyze the collected power consumption data, and all the results can be displayed. Smart grid not only brings convenience to users' life, but also reduces the burden of power workers.

Harbin: "hand in hand" ring network power supply to reduce power outages in the whole city

At present, once some low and medium-sized power lines in Harbin, Heilongjiang Province are attacked by natural weather such as wind, snow, freezing and cold wave, the resistance ability is not strong, and the lines are often damaged and residents have power cuts. In the next five years, Harbin will transform the power grid of 10kV and below, initially build an intelligent distribution network with self-healing and compatible characteristics, and complete 31 distribution automation "ring network" projects, that is, build a 20kV integrated distribution automation ring network in Qunli new area, in Daoli central street 30 different types of distribution automation networks have been built in central areas such as Nangang Museum.

After the completion of these distribution automation ring network projects, due to their "intelligent" functions such as automatic selection and removal of fault lines, the "hand-in-hand" ring network power supply between each line can effectively reduce the scope of power outage in the whole city, shorten the residents' power outage time and fault handling time, and the number of major power outages and power outages in the whole city in the past will be greatly reduced.

As an important platform from the Internet to the Internet of things, the successful construction of smart grid is bringing huge economic effects to mankind, greatly improving resource utilization efficiency and productivity, and improving the relationship between man and nature. It can make comprehensive use of various intelligent devices to obtain the needs of the power grid and users, intelligently control the storage and use of energy, realize the energy transmission between the power grid and users, and between users and users, optimize the operation and management of the power grid, and help users formulate power utilization plans and improve energy utilization efficiency through the intelligent feedback of user terminal equipment, Reduce electricity charges, so that people can manage the operation of power system more finely and dynamically.