Jiquan DC conversion power reaches 11 million kilowatts

On August 5th, Changji -Guquan ± 1100 kV high -voltage DC transmission project (hereinafter referred to as Jiquan DC) conveying power reached 11 million kilowatts for the first time, and the transportation power was close to Qinghai's provincial power load, creating a new record for the world's transmission line power transportation power transmission power transmission. Essence

Under the condition of no reference for reference, the Northwest Branch of the State Grid has organized a rolling computing analysis work that lasted for nearly three years, and the first electromagnetic simulation model of the DC power grid was established in China. Features and control schemes. On the basis of fully considering the demand and stable impact of new energy sources in all relevant regions, the Northwest Division of the State Grid divided 60 operation control gears in combination with the traffic coupling situation, and 110 An An An'an was formulated according to different methods and different failures. Control strategies, through a series of innovative methods such as optimizing the networking channel and the operation control scheme of Haixi photovoltaic operation control, implementing the security control system's lean intelligent grading strategies, support the realization of the maximum transportation power of Jiquan DC to 11 million kilowatts.

Jiquan DC high -power operation also brought a series of challenges to the power organization, fault defense, and real -time operation of the Northwest Power Grid. The Northwest Branch of the State Grid has completed 12 supporting thermal power units in advance to start the investment, refine the analysis of the balance of power and electricity, and control the control of lean scheduling. At the same time, in response to the extreme importance of the security and stability of Jiquan DC and the security and stability of the Northwest Power Grid. Before the high -power operation of Jiquan DC, the Northwest Branch of the State Grid organized a special investigation of the operation risk of the security control system and required operation and maintenance. The unit has done a good job of equipment for equipment and operation management, laying a foundation for ensuring the steady operation of Northwestern Power Grid under the conditions of DC high -power transportation.

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