Gas turbine load control method, device and equipment, storage medium and computer program product

By switching fixed speed and adjusting deadband parameters in the MarkVIe control system of GE's 9E gas turbine, the problem of large load fluctuations was solved and higher load stability and frequency regulation capability were achieved.

CN120650047APending Publication Date: 2025-09-16HUADIAN HUBEI POWER GENERATION CO LTD WUCHANG THERMAL POWER BRANCH
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Patent Information

Application Number
CN202510904316.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-01
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

In the MarkVIe control system of GE's 9E gas turbine, speed and load control are completed within the same module. As a result, the load stability after the unit is connected to the grid is directly affected by the speed, resulting in large load fluctuations (±3MW).

Method used

By detecting the current load and speed of the gas turbine, when the current load is greater than the preset load, the speed is switched to a preset fixed speed, and the dead zone parameters are adjusted according to the preset ratio. The adjusted dead zone parameters and fixed speed are used to control load fluctuations.

Benefits of technology

The load fluctuation range of the gas turbine is significantly reduced from ±3MW to ±0.5MW, which improves the load stability of the gas turbine and the qualified rate of primary frequency regulation, and solves the problem that the load stability is affected by the speed.

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Abstract

The invention relates to the technical field of gas turbine control, and discloses a gas turbine load control method, device and equipment, a storage medium and a computer program product. The method is applied to a MarkVIe control system and comprises the steps that the current load and the current rotating speed of a gas turbine are detected; when the current load is larger than a preset load, the current rotating speed of the gas turbine is switched into a preset fixed rotating speed; and dead zone parameters are adjusted according to a preset proportion, and load fluctuation of the gas turbine is controlled through the adjusted dead zone parameters and the fixed rotating speed. The current rotating speed is switched into the preset fixed rotating speed, so that the rotating speed and / or load control is only related to the load and is not influenced by the rotating speed any more; meanwhile, dead zone parameters are adjusted according to a preset proportion, and the load adjusting speed is increased; the technical problem that load fluctuation is large due to the fact that the load stability is directly affected by the rotating speed after grid-connected power generation of the unit is solved.
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