Since the beginning of summer, the East China region has been affected by continuous high temperatures, resulting in a significant increase in electricity consumption. During the critical period, State Grid Corporation of China adhered to the national "one game" strategy and played a role in resource allocation of the large power grid. It has twice increased the load of Jiquan DC transmission, bundled Xinjiang's abundant coal power and clean energy such as wind power, photovoltaics, and solar energy, effectively alleviating the tense situation of power supply in East China to the greatest extent possible, fully demonstrating the responsibility and responsibility of being a "major power tool" and a central enterprise "capable of withstanding".
In order to ensure reliable power supply in East China, State Grid Xinjiang Electric Power has formulated a special guarantee work plan, established a station and emergency linkage mechanism for leaders and experts at all levels, and selected more than 20 professional backbone personnel in maintenance and testing to strengthen on-site supply guarantee forces. Since August, the operation and inspection personnel of State Grid Xinjiang Electric Power Organization have fully utilized online monitoring, live detection, and intelligent inspection platforms to carry out joint special inspections and maintenance of supporting transmission and transformation equipment. The focus has been on precise temperature measurement, ultraviolet detection, data analysis, etc. for the converter valve, converter, DC field equipment, and transmission lines in Changji converter station. The stationed fire brigade has been organized to conduct practical emergency drills, fully ensuring the safe and stable operation of equipment. Under the condition of no reference for reference, the Northwest Branch of State Grid organized and carried out rolling calculation and analysis work for nearly three years, and took the lead in building a full electromagnetic simulation model for the AC/DC power grid in China. Using the full electromagnetic transient simulation tool, stability characteristics and control scheme verification were carried out, and the stability characteristics of the Northwest power grid after the high-power operation of Jiquan DC were analyzed in detail. Hami Wind Power was evaluated The impact of spatiotemporal distribution changes of different new energy sources such as Hexi wind power and Haixi photovoltaic on the impact of Jiquan DC fault.
In order to ensure the operation and maintenance of equipment at a power of 11 million kilowatts, State Grid Power has increased investment in personnel, technology, and equipment. As a deep partner of State Grid Corporation of China, Ambes has assisted more than ten substations multiple times, using high-precision design operation consoles and high torque multi degree of freedom operation consoles, combined with innovative modular design, to provide new products that are in line with the current trend, high standard customization, and provide control centers with solutions that are in line with the current situation. Assist all station personnel in overcoming the impact of high temperatures and epidemics, carefully monitor, inspect, and maintain, fully ensuring the safe and stable operation of the Xinjiang Electric Power DC artery, and contributing Xinjiang's strength to the national power supply guarantee. The transmission power of Changji Guquan ± 1100 kV ultra-high voltage direct current transmission project has been increased to 11 million kilowatts for operation, with a daily transmission capacity of 241.9 million kilowatt hours, setting a record for the world's highest transmission power of direct current transmission projects.
