Analysis of the Three Challenges Faced by Modern Power Grids

Electricity demand continues to grow rapidly

The basic national conditions of the adverse distribution of China's energy resources and productivity have determined that the basic pattern of large-scale long-distance transmission and large-scale optimal allocation of energy resources will not change in the long term. With the construction of various large-scale energy bases in the north and west, the optimization of energy allocation in the country is imperative.

In recent years, the State Grid Corporation of China has continuously increased the planning, construction, and transformation of distribution networks. The development level of the distribution network has been significantly improved. In some areas, the network structure is weak, there are many historical owals, and the condition of the neck is significantly improved.

On the other hand, at present, China's power demand and distribution network load continue to grow rapidly, especially in recent years, the frequency of severe weather such as high-temperature storms increased, the power supply and demand situation continued to be concentrated in areas with heavy loads and sustained high-temperature weather. To be tight, the requirements for security, reliability, and adaptability of distribution network power supply are getting higher and higher.

New energy and distributed power supply develop rapidly

New energy and distributed power sources are developing rapidly. Since the beginning of this year, the state has issued a series of regulations, plans and documents on renewable energy, clean development, energy conservation, emission reduction, distributed generation, and new energy vehicles. With the decentralization of the state's administrative examination and approval authority and the implementation of distributed power generation incentive policies, it is expected that next year's new energy development will show a trend of large total volume, rapid growth, and multiple points.

According to national plans, by 2020, the installed capacity of large-scale wind power and photovoltaic power plants will reach 200 million and 40 million kilowatts respectively, and distributed wind power, photovoltaic power generation, and natural gas power generation capacity will reach 20 million, 60 million and 50 million kilowatts, respectively. The continuous increase in the installed capacity of new energy has brought new challenges to the power grid.

The friendly and interactive demand for social power continues to increase

With the accelerated development of smart home appliances, intelligent transportation, and smart cities, the demand for electricity has become increasingly diverse, interactive, and intelligent. In particular, the development of electric vehicles has increasingly attracted the attention of all parties.

According to the national plan, by 2020, the number of electric vehicles will reach 5 million. These put forward higher requirements for improving the level of grid interaction.

Accelerate the construction of a strong smart grid

Meeting the challenge and meeting the needs of economic and social development lies in speeding up the construction of a strong smart grid.

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