Hydrogenerator rotor parameter monitoring system information transmission simulation test bench

Abstract

The invention discloses a simulation test bench for detecting the error rate when a hydro-generator employs a collecting ring to transmit data. The test bench comprises a frequency converter, a dragging motor, a shaft coupler, a rotating shaft, a bearing, a collecting ring support, a power supply collecting ring, a test collecting ring, a communicator, a power converter, a carbon brush support, and an upper computer. When the test bench is in operation, the frequency converter is adjusted to enable the external peripheral linear velocity of the test collecting ring to reach the external peripheral linear velocity of the collecting ring of the hydro-generator. A communication channel between the upper computer and the communicator is formed through a carbon brush and the test collecting ring. The upper computer transmits data to the carbon brush through a transmission line, and then to the test collecting ring, and finally to the communicator. The communicator verifies the data, and transmits a verification result to the upper computer. The upper computer verifies the returned data, so as to judge whether there is an abnormality or not. The test bench carries out continuous testing, counts the number of wrong communication times, and calculates the error percentage, i.e., the communication error rate, thereby judging the impact on the data communication from the material and structure of the collecting ring of the hydro-generator, and optimizing the design of the hydro-generator.

Description

technical field [0001] The invention relates to a simulation test bed for information transmission of a hydraulic generator rotor parameter monitoring system. Background technique [0002] my country has a vast territory and abundant water resources, and there are many hydropower stations distributed on various rivers. In hydroelectric generating units, the parameters on the rotor such as magnetic pole temperature, cooling air volume and other data are important data representing the operating status of the unit. These data are transmitted The upper computer can be connected with the collector ring and the carbon brush. Since these data have a great impact on the health of the unit, the reliability of these data is extremely important. At present, there is no error in this communication method at home and abroad. Code rate for specialized research work. Contents of the invention [0003] The purpose of the present invention is to disclose a simulation test bench for detecti...

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Problems solved by technology

[0002] my country has a vast territory and abundant water resources, and there are many hydropower stations distributed on various rivers. In hydroelectric generating units, the parameters on the rotor such as magnetic pole temperature, cooling air volume and other data are important data representing the operating status of the unit. These data are transmitted The upper computer can be connected with the collector ring and the carbon brush. Since these data have a great impact on the health of the unit, the reliability of these data is extremely important. At present, there is no error in this communication method at home and abroad. special research work

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