Construction of Intelligent Distribution Network: Function and Significance of Intelligent Distribution Network

SDG will transform the distribution network from the traditional supplier-led, one-way power supply and basically relying on manual management to user participation, two-way flow of power flow and high degree of automation. With the progress of DG construction in China, it will produce more and more obvious economic and social benefits, mainly in the following three aspects.

1) to realize the optimal operation of distribution network and achieve economic benefits. DG applies advanced monitoring technology to real-time monitor and optimize the management of operation conditions, so as to reduce the capacity-load ratio of the system, improve the system load ratio, and make full use of the system capacity, thus delaying or reducing the primary equipment investment of the power grid, resulting in remarkable economic and social benefits.

2) Provide high-quality and reliable electric energy to ensure the development of modern social economy. While ensuring the reliability of power supply, SDG can also provide users with power quality that meets their specific needs; It can not only overcome the short-term interruption of power supply caused by previous fault reclosing and closing operations, but also eliminate the influence of voltage drop, harmonics and imbalance, and provide reliable and high-quality power guarantee for the normal operation of various high-tech equipment and the development of modern society and economy.

3) Promote the new energy revolution and promote environmental protection and sustainable development. The traditional distribution network planning, design, protection, control and operation management methods basically do not consider the access of SER, and in order not to affect the normal operation of the distribution network, the existing standards or operation guidelines have made strict restrictions on the capacity of the accessed der and the selection of interconnection points, which has restricted the popularization and application of distributed generation. SDG has good adaptability, which can connect a large number of DER, reduce the cost of grid connection, greatly promote the development of renewable energy power generation, greatly reduce the use of fossil fuels and carbon emissions, and realize the transformation of power production mode and energy structure while promoting environmental protection.