Adjust to the balance of three-DOF air-bearing test-platform and the research of disturber torque

Xiubin, Yang; Jin, Guang

doi:10.11728/cjss2009.01.034

Cited by 3 publications

(1 citation statement)

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“…The main steam pipeline is long and the local resistance varies along the pipeline. Generally, valve flow characteristics can be divided into three categories, including critical, inertia, and linear classes [10,11] . When GV is in the linear area, its ability to adjust flow is very stronger, while it has less or even no ability to adjust flow in the inertia area.…”

Section: Flow Characteristics Of Gvmentioning

confidence: 99%

Research on Turbine Speed Control Method Based on Flow Characteristics of Governing Valve

Wang,

Ding,

Wang

et al. 2023

Preprint

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Studies show that there are inherent lower rotor time constants at high-parameter and large-capacity thermal power units, which leads to poor rotational speed stability under traditional control methods in complicated power grid structures and operating conditions. Moreover, it is prone to induce various safety accidents. Based on the current development trend of steam turbines in China, this paper analyzes the theories of rotational speed instability under special conditions as the incompatibility between the unit’s inherent characteristics and the commonly used control idea. In this regard, a series of speed control ideas are proposed based on the flow characteristic of governing valve. Through analysis and comparison of several typical operating conditions and events, theoretical modeling, practical tests, and simulation identification, the theoretical analysis was verified. Flow characteristic curves of the governing valve and optimized strategies such as targeted control strategies and optimized operating procedures were adopted, and promising results were achieved in terms of safety and economy.

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Section: Flow Characteristics Of Gvmentioning

confidence: 99%