De-excitation system performance test analysing method and test analyzer thereof
A technology of test analysis and system performance, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve the problems that cannot fully and accurately reflect the performance of the demagnetization system, cannot meet the higher requirements for the safe operation of large-capacity generator sets, and achieve Guarantee the effect of safe and reliable operation
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Embodiment 1
[0050] Example 1, such as Figure 5 , the voltage V1 of the de-excitation switch in the generator de-excitation system, the voltage V2 of the generator rotor winding, the current V3 in the de-excitation resistance circuit (expressed by the voltage on the shunt), and the current V4 in the de-excitation switch circuit (expressed by the voltage on the shunt Signals such as the current V5 in the generator rotor winding circuit (represented by the voltage on the shunt) are connected to the input interface module 2 as the input signal AI, and after preprocessing such as isolation, filtering, matching, and correction, Send into signal conversion module 3 again and carry out A / D conversion and data acquisition, then send into computer mainboard 1, let the performance analysis module 7 pair acquisition by operator again by the input keyboard control computer mainboard 1 of man-machine interface processor 4 Carry out energy calculation on the voltage and current data of each loop, perfo...
Embodiment 2
[0051] Example 2, such as Figure 5 , the generator rotor winding voltage V2, the current V3 in the demagnetization resistor circuit (expressed by the voltage on the shunt), the current V4 in the demagnetization switch circuit (expressed by the voltage on the shunt), and the current in the generator rotor winding circuit Signals such as V5 (indicated by the voltage on the shunt), generator three-phase stator voltage (V6, V7, V8) are connected to the input interface module 2 as the input signal AI, and pre-processed such as isolation, filtering, matching, and correction Afterwards, send into signal conversion module 3 again and carry out A / D conversion and data collection, then send into computer main board 1, let the performance analysis module 7 be allowed performance analysis module 7 by the input keyboard of man-machine interface processor 4 by the operator again Carry out volt-ampere correlation characteristic analysis to the collected voltage and current data of each loop...
Embodiment 3
[0052] Example 3, such as Figure 5 , take the generator rotor winding voltage V2, the current V3 in the demagnetization resistance circuit (expressed by the voltage on the shunt), the current V5 in the generator rotor winding circuit (expressed by the voltage on the shunt) and other signals as the input signal AI into the input interface module 2, after preprocessing such as isolation, filtering, matching, and correction, and then sent to the signal conversion module 3 for A / D conversion and data acquisition, and then sent to the computer main board 1, and the operator passes the manual The input keyboard of the machine interface processor 4 controls the computer motherboard 1 to allow the performance analysis module 7 to perform spectrum decomposition calculation on the collected voltage and current data of each loop, and then the above-mentioned signals collected are collected on the liquid crystal display terminal of the man-machine interface processor 5 Display the amplit...
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