Method and system for arranging OC bus of TSI system

By dividing the OC bus into independent channels and combining analog and digital separation design, hardware redundancy and intelligent algorithm optimization, the signal crosstalk and resource allocation problems of traditional OC buses are solved, and high reliability and high efficiency signal transmission is achieved to meet the needs of steam turbine safety monitoring.

CN120541018AActive Publication Date: 2025-08-26BEIJING HUAKE TONGAN MONITORING TECH CO LTD
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Patent Information

Application Number
CN202511028996.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-25
Publication Date
2025-08-26
Estimated Expiration
2045-07-25

AI Technical Summary

Technical Problem

The OC bus of traditional TSI systems has significant problems in signal crosstalk, bus failure and resource allocation, resulting in increased errors in vibration monitoring data and inaccurate fault diagnosis. In addition, digital bus failure is prone to cause malfunctions in the protection system, which poses safety hazards, and bus resource allocation cannot be dynamically adjusted, affecting system efficiency.

Method used

The OC bus is arranged using a three-layer progressive structure, including independent main channels of data acquisition, communication and address and working condition bus. Combined with a grounding design separated from analog ground and digital ground, a resistor buffer circuit, a double-phase hard-wired redundant channel of the hardware redundant layer and a dynamic allocation model of the intelligent algorithm layer, signal transmission and resource utilization are optimized.

Benefits of technology

It effectively suppresses signal crosstalk, reduces the error of vibration signals, improves transmission reliability and real-time performance, meets the API670 standard, reduces unplanned downtime, and improves bus resource utilization and system efficiency.

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Abstract

The invention relates to the technical field of steam turbine safety monitoring, in particular to a method and system for arranging an OC bus of a TSI system, and the method comprises the steps: dividing the OC bus into three types of independent main channels, namely a data collection bus, a communication bus and an address and working condition bus, in a physical layout layer; a grounding design of separating an analog ground from a digital ground and a resistance buffer circuit are arranged in a matched manner to form a multi-layer anti-interference system, and different buses are arranged in a layered manner; the hardware redundancy layer constructs a double-inter-phase hard wiring redundancy channel by depending on an independent channel reserved by physical layout, a fault switching mechanism is formed by combining a relay and a control node, and the redundancy channel is physically isolated from a main channel; and the intelligent algorithm layer constructs a state space according to an address bus and a power channel state in the physical layout layer, and performs iterative optimization on an algorithm decision through a dynamic allocation model in combination with a fault feedback signal of the hardware redundancy layer. According to the scheme, the OC bus is arranged by adopting a three-layer progressive structure, so that the transmission reliability is improved.
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