At around 8 am on September 29, the first photovoltaic unit of the 160 MW photovoltaic project, a large-scale development demonstration project for renewable energy based on diversified applications, was connected to the grid. So far, the total installed capacity of new energy in the Jibei Power Grid reached 35.765 million kilowatts, accounting for 70.1% of the unified installed capacity, and the electricity accounted for 47.7%, ranking first in the country. At the same time, this marks that new energy has gradually become the installation and power main body of the Hebei Power Grid. The core feature of the new power system of the Hebei Power Grid is becoming increasingly prominent. The new power system in the Hebei Power Grid has begun to take shape, creating favorable conditions for the in-depth construction of the new power system in the future.
Northern Hebei region has rich wind power and solar energy resources. It is a tens of millions of kilowatt wind power base in the national renewable energy development plan and one of the nine clean energy bases in the country. In recent years, State Grid Hebei Electric Power has based on its resource endowment and energy advantages, resolutely implemented the national new energy development responsibilities and missions, vigorously implemented the innovation-driven development strategy, and took multiple measures to promote new energy consumption, promote energy transformation with scientific and technological innovation and assist the "dual carbon" goal, contributing Hebei wisdom to the construction of a new power system and providing Hebei solutions.
State Grid Jibei Electric Power thoroughly implements the work arrangements of State Grid Corporation to promote new energy consumption, and in the world, it pioneered the quantitative analysis method of multi-factor full-time sequence map of new energy consumption using massive data , builds a multi-dimensional evaluation system for new energy, and refines the level of new energy consumption. In 2021, the wind power utilization hours reached 2,159 hours; the photovoltaic utilization hours reached 1,338 hours; the total guaranteed acquisition of new energy electricity was 55.218 billion kWh, an increase of 30.4% year-on-year, accounting for 43.2% of the total power generation in the network, and provided 12 billion kWh and 8 billion kWh of clean electricity to Beijing and Tianjin respectively.
Hebei Power Grid New Energy maintains a strong development momentum, and its grid-connected installed capacity has tripled from 4.27 million kilowatts at the beginning of 2012 to 35.765 million kilowatts. According to the province's "double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-double-
With the large-scale access to new energy, the functions, structure and shape of the Hebei power grid have undergone profound changes, and the "double high" characteristics are becoming increasingly obvious, which brings new challenges to ensuring the safe and stable operation of the power grid and reliable power supply. In this regard, State Grid Hebei Electric Power continues to increase its construction and investment in power grid channels, conscientiously implements the national regulations on new energy development, construction, access systems, etc., firmly grasps the grid connection services and basic management of wind farms and photovoltaic farms, actively carries out wind power transmission planning research, and explores research on new energy grid connection technology.
In order to adapt to the development needs of new energy, as of now, State Grid Hebei Electric has invested a total of 25.1 billion yuan to build and put into operation a batch of large-capacity new energy transmission channels; the 14th Five-Year Plan plans to arrange another grid investment of 13.7 billion yuan, and plan to build 2 1,000 kV ultra-high voltage and 11 500 kV projects to further improve the new energy export capacity and fully meet the new energy export needs of Zhangjiakou and Chengde . At the same time, we will accelerate the construction of the Zhangjiakou new power system demonstration zone, focusing on the "two major scenarios" of 100% new energy transmission on the dam and the high proportion of new energy in the dam, and explore the establishment of a power supply model with new energy as the main body, and help the high-quality development of new energy .
According to reports, State Grid Jibei Electric Power is the first among the provincial network companies in the country to access all stand-alone information, which can monitor the theoretical output, available output, wind and light abandonment of the entire network and each station in real time, and realize the "four-dimensional" evaluation system covering the operation of new energy in the entire network of Hebei, and refine the new energy consumption capacity. Establish a new energy effective control system, continuously optimize the joint control strategy of scenery and light, make full use of cross-sectional delivery capabilities, and improve the level of consumption. Since 2015, power forecasting assistance has been carried out for wind farms with power forecasting accuracy below 75%, and the average forecasting accuracy of the assisted wind farms has increased by more than 4%.Carry out green electricity transaction scheduling, and conduct priority scheduling of trading electricity for new energy stations participating in green electricity transactions in Zhangjiakou renewable energy demonstration zone.
State Grid Jibei Power fully uses scientific and technological innovation to improve the new energy delivery capacity and strives to escort the safety and stability of the large power grid. The company uses a full electromagnetic transient simulation platform to carry out refined modeling of wind fans and photovoltaics in wind farms, and accurately simulate and analyze to improve the stable characteristics and delivery capabilities of the new energy collection system. By accurately modeling the 57 new energy stations involved in new energy delivery channels such as Zhangbei-Xiong'an UHV AC, as well as 20 photovoltaic inverters, 52 fans and 61 SVG models, and carrying out new energy delivery capacity verification and grid operation characteristics analysis, we guide new energy equipment manufacturers to target the optimization of unit characteristics and improve the new energy delivery capacity by 45%.
While fully promoting the consumption of new energy, State Grid Jibei Electric Power is also doing its homework in serving new energy and online, striving to provide high-quality and efficient services to new energy enterprises. State Grid Jibei Electric Power released the "New Energy Grid Connection Service Manual" in the first state grid system, shortening the processing time by 27 working days. By continuously optimizing and improving the grid-connected service process, revising and publishing the "New Energy Grid-connected Service Manual" of Jibei Company, optimizing the new energy grid-connected management process based on the regulation cloud, and realizing the "one-stop" handling of grid-connected procedures.
In order to improve the active support capabilities of new energy such as wind power and photovoltaics, State Grid Jibei Electric Power organized a research team of the Academy of Electric Power Science to carry out research on topology structure and cluster operation technology of wind and light storage, breaking the traditional control mode of "passively accepting superior instructions" for power response by new energy power generation equipment, making the new energy generator set have the function of actively supporting the frequency and voltage of the power system, improving the friendliness of new energy network, and building the world's first 100-megawatt-level new energy virtual synchronous machine demonstration project, providing a "model room" for the high-quality construction of new power systems.
Under the guidance of the "dual carbon" goal, new equipment and new technologies are constantly emerging, and the development of the power grid faces many new challenges. It has put forward very realistic and urgent requirements for further strengthening scientific and technological innovation and increasing technological research. This year, State Grid Jibei Electric has formulated a new power system scientific and technological support plan and a "2599" support plan for the construction of the Zhangjiakou new power system demonstration zone, focusing on the operation control of the "double high" power system, reliable operation of the flexible DC power grid, and coordinated interaction of source, grid, load and storage, and concentrated efforts to solve the "bottleneck" technical problems. (Jin Yongao Zhao Shuwei Kou Lingyue Zhang Shuo Geng Yan)
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