One-key start-stop control system of single-shaft gas turbine

By using a one-button start-stop control system for a single-shaft gas turbine, the system collects and analyzes gas turbine parameters in real time, generates a set of state parameters, and dynamically plans the start-stop control sequence. This solves the problem of balancing equipment lifespan loss and operating efficiency during the start-stop process of the gas turbine, and optimizes the long-term reliability and economy of the equipment.

CN121408085APending Publication Date: 2026-01-27DATANG CHONGQING JIANGJIN GAS TURBINE POWER GENERATION CO LTD
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Patent Information

Application Number
CN202511814942.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

Existing gas turbine start-stop control systems lack real-time equipment life assessment and optimization mechanisms, resulting in significant differences in equipment life loss during start-stop processes. Furthermore, the start-stop process is disconnected from operational efficiency optimization, making it impossible to achieve a balance between life loss and operational efficiency, thus increasing power plant operating costs.

Method used

The system adopts a one-button start-stop control system for a single-shaft gas turbine. It collects gas turbine parameters in real time through a state observer, generates a state parameter set, and combines it with a life assessment and efficiency calculation model to dynamically plan the start-stop control sequence. It also utilizes a multi-loop coordinated control system and an adaptive PID controller to generate precise control commands, thereby minimizing equipment life loss and optimizing operating efficiency.

Benefits of technology

It effectively avoids excessive stress impact on hot components during start-up and shutdown, extends equipment overhaul cycle, reduces maintenance costs, improves operating efficiency, reduces fuel waste, and enhances the power plant's competitiveness in the peak-shaving ancillary services market.

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Abstract

The invention relates to the field of start-stop control, and discloses a one-key start-stop control system of a single-shaft gas turbine, which is used for solving the technical bottlenecks of the traditional control method in the aspects of state perception, service life management and the like. Comprising the steps that a gas turbine state parameter set containing rotor thermal stress, combustion chamber temperature and exhaust temperature distribution is generated; and generating a life loss evaluation result and an operation efficiency evaluation result by adopting the life evaluation model and the efficiency calculation model, and generating a start-stop control prediction sequence through a dynamic programming algorithm. The service life loss and the operation efficiency are quantitatively evaluated in real time, so that the operation cost problem that the service life and the operation efficiency of the equipment are difficult to consider in the existing start-stop technology is solved, and the full-life-cycle operation cost is remarkably reduced while the long-term reliability of the equipment is guaranteed; maintenance cost can be effectively reduced, fuel consumption is saved, and power grid response economy is improved.
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