State Grid Northwest Branch plays a role in optimizing the allocation of large power grid resources and makes efforts to improve the level of lean regulation at the three ends of source, grid and load

China Energy Storage Network News: On December 7, affected by cloudy weather, the output of photovoltaic power generation in Gansu Province during the morning peak continued to be low, resulting in local power shortages. The Northwest Electric Power Dispatching and Control Center immediately carried out three inter-provincial mutual aid transactions, with a total support of 1.9 million kWh of electricity, to ensure the balance of power in the Gansu power grid. Since the beginning of winter, in the face of the combined effects of the winter peak electricity consumption period, the northern heating period, the Yellow River ice prevention period, and the winter wind period, the Northwest Branch of State Grid Corporation of China has made forward-looking plans and actively responded, giving full play to the role of optimizing the allocation of large power grid resources, and exerting efforts from the three ends of source, grid and load to continuously improve the level of lean regulation, while ensuring the power supply in the northwest region, supporting the power supply in the central and eastern regions.

Since the beginning of winter, the load of the power grid in the five northwestern provinces (autonomous regions) has reached a record high 13 times in total, including two times in Gansu, with the highest reaching 17.66 million kilowatts; seven times in Qinghai, with the highest reaching 11.23 million kilowatts; and four times in Xinjiang, with the highest reaching 37.85 million kilowatts. The maximum load of the Northwest Power Grid reached 109.34 million kilowatts, 2.02 million kilowatts higher than the maximum load during the summer this year. The Northwest region is an important energy base in my country. On the basis of ensuring the power supply of the five northwestern provinces (autonomous regions), the Northwest Branch of State Grid has explored the potential for transmission and strengthened the regulation of power resources. In November, the maximum DC transmission power was 37.62 million kilowatts.

The Northwest Branch of State Grid strengthened the management of power supply, improved power generation capacity, and urged all parties to increase the coordination of power coal. As of the end of November, the power coal inventory of power plants in the Northwest region was nearly 18 million tons, an increase of 1.35 million tons year-on-year. In addition, the branch continued to carry out special rectification of thermal power generation capacity, increased the assessment of non-stop and obstructed thermal power units during peak power consumption periods, and revised the relevant provisions of the "two detailed rules". At the same time, the branch tapped the hydropower generation capacity, lowered the water level of Liujiaxia Reservoir to 1715.83 meters on November 15, and reserved 2.1 billion cubic meters of anti-ice storage capacity; Qinghai hydropower generation space during the anti-ice period reached 3.9 billion kWh, an increase of 200 million kWh year-on-year.

State Grid Northwest Branch optimized the grid arrangement and played the role of cross-provincial mutual assistance. In November, it carried out 1,157 inter-provincial power support projects, with the maximum supported power reaching 4.28 million kilowatts and a total supported power of 2.221 billion kilowatt-hours. It strengthened the monitoring and analysis of grid operation, focusing on areas prone to ice and snow disasters such as central and eastern Gansu, and used an integrated safety and intelligent management and control platform to issue 13 low-temperature icing warnings and completed five equipment failure anti-accident plans.

In terms of load-side management, State Grid Northwest Branch urged government departments in five provinces (autonomous regions) to complete the approval of orderly electricity consumption plans and organize the formulation of emergency control plans for large industrial loads within the day. The first batch of controllable loads totaled 7.53 million kilowatts; the two-way interactive efficiency of self-owned power plants on and off the grid was explored to enhance the flexible load regulation capabilities.

The Northwest Branch of State Grid Corporation of China has carried out the negotiation and adjustment of the stock contract prices of thermal power for cross-regional and cross-provincial annual transactions from November to December 2021. The branch has implemented the market-oriented reform measures for the on-grid electricity price of coal-fired power generation to enhance the enthusiasm of thermal power companies for power generation; promoted the optimization and adjustment of the contract curves for the annual transactions related to the Northwest Power Grid to the Southwest Power Grid, improved the tight power situation during the morning and evening peak hours in the Northwest Power Grid in winter, and achieved cross-regional inter-provincial mutual assistance; combined with the peak-shifting characteristics of the power loads in Xinjiang and Shaanxi and the east and west of the Northwest Power Grid, the inter-provincial mutual assistance was carried out by staggering the peaks, alleviating the evening peak balance pressure of the Xinjiang Power Grid, and making short-term adjustments to medium- and long-term contracts in advance in combination with the power forecast of new energy.