With the rapid development of artificial intelligence, machine vision and other information technologies in the construction of smart power plants, the requirements of power plants for the state monitoring of hydro-generator units (HGU) are becoming higher and higher. Based on this, this paper applies YOLOv5 to the state monitoring scenario of …
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Therefore, the design of the hydro-hybrid bearing-rotor coupled system is reasonable and reliable, it can meet the technical requirements. 5. Conclusion. This paper explores the rotor dynamics of the Sodium bearing-rotor coupled system in the two-circuit system. Natural frequency and vibration modes are given, vibration amplitude at the key ...
Rotor Winding Tests. Depending on when tests are performed, there are on-line and off-line tests available (Table 1) Table 1. On-line vs. Off-line Tests [1] ... For 17 years he was a rotating machine test engineer with Ontario Hydro. Since 1990, he has been with Iris Power, a manufacturer of diagnostic test equipment. ...
The measured eccentricity of the rotor of the hydro-generator unit installed with high precision is lower than 0.15 mm. The unbalanced magnetic pull and vibration caused by the rotor eccentricity are calculated to be very small and consistent with the field measurement.
The AGMS system has proven itself to be an efficient tool for monitoring structural problems related to loose rotor rim, weak rotor structure, uneven thermal …
The hydro generator rotor represents a significant engineering accomplishment when readers consider the size, speed, and mass of this device. Since …
Loose Rim on Hydro generator identified by online monitoring of Air Gap and Rotor Magnetic Flux after refurbishment work on rotor poles. Company. ... G. Allen, Y. Houle: Benefits of On-line Monitoring System in Operating and Refurbising Generators at Rapide-des-Iles-Powerplant, UPRATING AND REFURBISHING HYDRO PLANTS VI, …
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The hydro generator rotor represents a significant engineering accomplishment when readers consider the size, speed, and mass of this device. Since the majority of large vertical hydro generators have laminated rims with fabricated spiders, this chapter focuses mainly on this arrangement. A laminated rim is often shrunk to some …
1. Rotor and spiders The rotor spider, especially one of large diameter, is arguably the most critical mechanical component in the generator. It is exposed to numerous …
ABB can provide customers with three levels of Hydro Generator T&I Condition Assessment (see Table 1): • Level 1 – Rotor In / Minimum Access to Generator - Electrical tests are performed at the generator main leads and visual inspections conducted if access is available • Level 2 – Rotor In / Some Covers Removed
Rotor Hydro is the ideal hydraulics tool to clear stumps and fallen trees from forest areas and public and private and garden areas is the HRX 075. Through its broad selection of precision nozzles, the HRX …
WEBRotor spider is part of vertical hydro-generator which transfers torque and rotation from shaft to rotor rim and poles [Wiedemann et al. 1967]. Poles create rotary magnetic field …
The electrical capacity (C_{12Sigma }) between electrode system 1 and electrode system 2 will change when the grounded surface of the rotor pole 6 is moved, that is, when the gap (d) in the hydrogenerator changes (C_{12Sigma } = f(d)).The length (l_1) of electrode 1 s chosen from the condition (l_1 = l_2 + 2l_3), (l_3 ge d_0) The …
The rotor winding inter‐turn short‐circuit in hydro‐generators has been plaguing power producers in terms of production safety and economy. At present, the fault detection methods for hydro‐generator rotors are offline or complex. To solve this problem, this paper presents the no‐load curve reverse calculation method. The method only requires …
As illustrated in Fig. 1, the scale model is installed inside an enclosure to obtain a closed-loop ventilation circuit.The fluid motion in this model is driven solely by the rotation of the rotor. Indeed, the rotor spider arms act as a centrifugal pump that directs the cooling air through the rotor ventilation ducts and fan blades, then through the air-gap, …
The Hydro-Rain HRX rotor is a high-quality sprinkler head designed for efficient and uniform water distribution in large areas. With advanced features and durable …
The purpose is to provide backup protection for the generator if the primary generator protection, transformer or line relaying fails to activate in a timely manner. Two zones of protection using different time delays is recommended. Zone 1 is set to provide backup protection for internal powerhouse faults.
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say, to keep safe operation of the hydro turbine genera tor unit, the guide bearing stiffness should larger. than or equal to 2.0×107 N/mm in design. According to the above analysis, when the ...
ABSTRACT. This paper describes the application and implementation of the method of analysis of stator and rotor geometry and dynamics of hydro generator rotor based on the analysis of the measurement of air gap and air gap flux density. The operational dynamics of the generator depend on the influence of mechanical and magnetic forces and ...