KMbalancerPro Multi-functional Mechanical Vibration Analyzer For Weifang Wuguanzhuang Power Station To Ensure The Safety Of Power Transmission
In recent years, with the gradual acceleration of urbanization, the demand for electricity by residents and industries has grown rapidly, and more and more substation locations have penetrated into the urban center. Considering that substation is a dynamic complex system with multiple noise sources, wide distribution, multiple refraction, reflection and overlapping of noise. Controlling the noise source is the most fundamental and effective measure to reduce its comprehensive noise. It is necessary to develop and select the equipment to reduce the noise, improve the structure of mechanical equipment, improve the technological level, and reduce the noise power of the noise source. However, this puts forward higher requirements for the improvement of the production process of the equipment. GIS equipment is widely equipped in power transformation, which is an important component. The equipment occupies a small area, can be installed more quickly, and is more convenient to maintain. This component operates completely enclosed and is less affected by the external environment, so it can operate more reliably. Although this equipment has many advantages, but its internal field strength is very high, so during the manufacture of the equipment, equipment and operation, some minor hidden dangers can cause failure.
Once the GIS equipment fails, it will lead to a large area of power failure. A prolonged power outage can cause serious damage. After the GIS equipment is put into operation, because it is extremely closed, it can not intuitively judge its internal defects, so it becomes extremely difficult to detect and locate the fault, and the maintenance work is difficult to carry out smoothly. The choice of GIS equipment fault detection means and methods can play an important role in the operation of power grid.
In the Wuguanzhuang Substation in Weifang, Shandong Province, 110KV GIS abnormal sound needs to be detected, the main vibration source and its specific location need to be found, and the vibration analysis is accurate. KM vibration engineer with KMbalancerPro multi-functional mechanical vibration analyzer detects abnormal sound from the circuit breaker body and connecting sleeve. The frequency of 100Hz is mainly electromagnetic vibration caused by the frequency of the power supply, and the frequency of 10Hz and harmonics of 20Hz exist in some parts of the spectrum, indicating that the electromagnetic vibration has stimulated the resonance formed by the natural frequency of the internal device, and the equipment diagnosis conclusion and maintenance suggestions are given. KMbalancerPro is suitable for all kinds of rotating machinery vibration state monitoring and motor dynamic testing, with equipment status automatic diagnosis analysis, path data acquisition, time waveform analysis, phase analysis and many other vibration measurement analysis functions, can be used as the basis for state monitoring. The built-in bearing fault database of the KMMS mechanical condition management system can be used to accurately analyze the initial abnormal problems of bearings, and make research and judgment for bearing wear or lubrication problems in advance.
In this case, the abnormal noise of GIS equipment was checked, its causes were analyzed, and faults were investigated. Acoustic imaging, vibration measurement and other detection methods were adopted to determine that the main noise source was the resonance formed by the natural frequency of the internal device stimulated by electromagnetic vibration. The results were verified through detection, thus providing effective guidance for future maintenance. The time of maintenance inspection is greatly shortened, and the experience of live detection GIS equipment is accumulated.
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