On November 28, the 2019 Guangdong-Hong Kong-Macao Greater Bay Area Academician Summit and the 5th Guangdong Academician Summit Annual Meeting were held in Dongguan. 58 academicians including Li Lixu, academician of the Chinese Academy of Engineering, and more than 40 well-known experts and scholars from Guangdong, Hong Kong and Macao participated in the event.

As the construction of “Digital China” rises to a national strategy, digitalization and informatization continue to develop, and its application space in the development of electric power is still very large, and the development of electric power informatization and intelligence needs to be broken through. Li Lixun, academician of the Chinese Academy of Engineering, said: “I put forward the development concept of ‘transparent power grid’ to further promote the upgrading and innovation of smart grids. Open and shared electricity demand for a better life.”

Relying on small and micro smart sensors to create a “transparent grid”

The key to creating a “transparent grid” is data. Li Lizhen said that the sensors currently used in the power grid have problems such as large size, inconvenient installation, difficult calibration, and high price, and it is difficult to meet the development needs of intelligent, transparent, market-oriented and IoT-enabled power grids.

“The data collection of ‘Transparent Grid’ relies on small and micro smart sensors the size of ‘matchbox’ or even ‘coin’. It is not only small in size, easy to install and maintain, but also has the function of self-organizing network, and the collected grid data is more sufficient and more accurate. Reliability is the foundation of a ‘transparent grid’,” Li Lizhen said.

It is understood that small and micro sensors realize miniaturization and miniaturization of sensors through the use of chips, micro-mechanical electronics and other technologies; smart sensors, carrying microprocessors, have both information detection, processing, memory and logical judgment functions; wireless sensor networks, It is composed of a large number of sensors in a self-organizing and multi-hop manner, which cooperatively collects, processes and transmits monitoring information of sensing objects in the network coverage area. The three constitute small and micro smart sensors.

Small and micro smart sensors are widely installed on the power grid, so that the power supply, network, energy storage and other links of the power system can be fully displayed, so as to achieve comprehensive and deep transparency of information such as power grid operation status, environmental status, and security status, forming a “transparent power grid”.

China Southern Power Grid Guarantees Power Supply Reliability Serving Greater Bay Area Smart Power Demand

Li Lizhen said that the “transparent grid” is an upgraded development of the “smart grid”, and the “transparent grid” will realize the synergy and integration of power production and consumption in the Guangdong-Hong Kong-Macao Greater Bay Area. “With the permission of the rules, everyone can obtain and use system data, and relevant departments fully coordinate to provide energy guarantee and services for various industries in the Greater Bay Area.”

With the development of the Guangdong-Hong Kong-Macao Greater Bay Area, the effect of industrial agglomeration and integration has been strengthened, and the manufacturing, financial and service industries have ushered in new opportunities, which also put forward new requirements for power security. It is understood that among the 20 smart grid planning and construction demonstration areas under construction by China Southern Power Grid, as many as 9 belong to the Guangdong-Hong Kong-Macao Greater Bay Area.

From 2018 to 2022, China Southern Power Grid will invest more than 20 billion yuan in power grid technology research and development in the Greater Bay Area, and will invest more than 170 billion yuan in power grids in the Pearl River Delta region to speed up the planning and construction of smart grids in the Guangdong-Hong Kong-Macao Greater Bay Area and continue to improve power grid defense. Disaster resilience, and basically build a safe, reliable, green and efficient smart grid by 2022.

It is understood that in 2018, the average power outage time for users in Shenzhen was 0.68 hours, which is comparable to that of Paris, London and other cities. Li Lizhen said that the construction of “transparent power grid” will provide support for “promoting the revolution of energy production and consumption and building a clean, low-carbon, safe and efficient energy system”.