In the past few days, the Zhangbei ±500 kV multi-terminal flexible DC power grid project with the highest voltage level and the largest transmission capacity in the world is under construction. After completion, it will increase the city's 6 million kilowatts of renewable energy power transmission capacity. As the most important issue of the development of the renewable energy industry, the export and consumption of renewable energy has become a bottleneck in the domestic development of this field. The Zhangjiakou Renewable Energy Demonstration Zone has been approved for more than two years. It has continuously explored ways to generate innovative renewable energy power, and made breakthroughs in flexible DC, UHV, and smart grids, and focused on building intelligent renewable energy transmission channels.
The city is located in the throat of the country's West Power East and North Power South, is a 500 kV transmission channel. With the rapid development of the renewable energy industry, the city's wind power, photovoltaic and other renewable energy development and utilization of installed capacity has increased year by year, ranking the forefront of the national prefecture-level cities. At the same time, the capacity of Beijing-Tianjin-Tangshan grid to absorb renewable energy is gradually saturated, and the problem of power transmission has become a new bottleneck for the development of renewable energy industry. In order to open up new energy delivery channels, State Grid Zhangjiakou Power Supply Company is based on the status quo of new energy development in the region and promotes the construction of a 500 kV “three stations and four lines†project. In April 2015, seven 220 and 110 kV substation projects were completed and put into operation. For the Zhangjiakou area, 1.5 million kilowatts of wind power transmission capacity has been added, and the Zhangjiakou power grid has entered the era of “countertal power grid 220 kV dual power supplyâ€.
The city will use the intelligent transmission channel construction project as one of the “four major projects†for the construction of renewable energy demonstration zones. It plans to build a number of intelligent transmission demonstration projects, build a smart grid, and lead the development direction of renewable energy integration. In May 2016, State Grid Yubei Power Co., Ltd. released the White Paper on the Development of the Global Energy Internet Zhangjiakou Innovation Demonstration Zone in the city, and designated the city as the “Global Energy Internet Zhangjiakou Innovation Demonstration Zoneâ€, which is planned for the “13th Five-Year Planâ€. During the period, the State Grid Yubei Power invested 23 billion yuan to explore the scientific path for global energy Internet construction through the construction of the “Ten Projects†in terms of scale, technological innovation and economic application, so that the demonstration area will move from planning to reality. On December 27, 2017, the world's first new energy power station with virtual synchronous machine function was completed and put into operation in the city's national wind storage and storage demonstration power station, actively supporting the grid frequency and voltage fluctuations, and effectively ensuring the safe and stable operation of the power grid.
The footsteps of the 2022 Winter Olympics are getting closer and closer. According to the “Development Plan for Renewable Energy Demonstration Zone in Zhangjiakou City, Hebei Provinceâ€, the demonstration zone will build a low-carbon Olympic zone in Chongli District, and the main energy consumption will be realized in the zone. From renewable sources. In order to ensure the high-quality renewable energy supply requirements of the Winter Olympics, the city predicted the Chongli power supply network structure and brief load, and completed the preparation of the main network planning and distribution network planning of the Chongli Winter Olympics area. 2+4+N†Winter Olympics power supply network, forming an intelligent renewable energy power output channel.
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