Combustible gas monitoring method, system and equipment for gas turbine based on multi-region cascade protection and medium

The multi-zone cascade protection design for Alstom's GT13E2 gas turbine solves the problem of internal logic being unable to be viewed and modified, enables autonomous monitoring and maintenance, and improves system reliability and applicability. It is applicable to Alstom's GT13E2 gas turbine and has universality.

CN120801608APending Publication Date: 2025-10-17HUANENG SUZHOU THERMAL POWER CO LTD
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Patent Information

Application Number
CN202510672811.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-23
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

The existing Alstom GT13E2 gas turbine combustible gas monitoring system cannot view or modify its internal logic and lacks customized protection strategies for specific operating conditions. This results in high maintenance costs and high dependency, and is unable to meet the differentiated monitoring needs under different operating conditions.

Method used

By installing combustible gas detectors in the thermal module, gas module and cover exhaust section, independently designing cascade protection logic, including alarm level, PLST level and TRIP level protection, controlling the relay to execute protection actions, and transmitting the redundant signals to the gas turbine TCS control system, adding calibration cut-off function and host computer monitoring.

Benefits of technology

It achieves independent control of the combustible gas monitoring system, reduces maintenance costs, improves monitoring accuracy and system reliability, avoids false operations, and provides a friendly human-computer interaction interface. It is applicable to Alstom GT13E2 gas turbines and has universality.

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Abstract

The invention relates to the technical field of electric power safety monitoring, in particular to a gas turbine combustible gas monitoring method, system and equipment based on multi-region cascade protection and a medium. Combustible gas detectors are arranged in a heat module area, a gas module area and a housing exhaust section area of an Alston GT13E2 type gas turbine, combustible gas concentration values of all the areas are collected, cascade protection logic judgment including alarm-level protection, PLST-level protection and TRIP-level protection is executed, protection actions are executed by controlling corresponding relays, and therefore the combustible gas concentration values of all the areas are obtained. And the protection action signal is synchronously introduced into a gas turbine TCS control system in a redundancy mode. The gas turbine combustible gas leakage monitoring system further comprises a detector fault monitoring function, a calibration removal function and an upper computer real-time monitoring function, the problem that the internal logic of an existing Alstonon GT13E2 type gas turbine combustible gas monitoring system cannot be checked and modified is solved, the autonomous overhaul, maintenance and calibration capacity of the gas turbine combustible gas leakage monitoring system is improved, the availability and accuracy of the system are guaranteed, and the system reliability is improved. And reliable data interaction with a gas turbine control system is realized.
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Citation Information

Patent Citations

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