Test system and method for performance of electronic current transformer
A technology of current transformer and test system, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., can solve the problems of increasing workload, achieve the effects of reducing repeated wiring, improving test efficiency, and facilitating on-site management
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Embodiment 1
[0049] Such as Figure 4 As shown, an electronic current transformer performance test system includes a standard current transformer connected in series on the primary side, a test electronic current transformer, and a sampling rate adaptive module and a merging unit module;
[0050] Both the standard current transformer and the test electronic current transformer are provided with a synchronous signal inlet for accessing the synchronous signal;
[0051]The input end of the sampling rate adaptive module is connected to the output end of the test electronic current transformer, and the input end of the merging unit module is connected to the output end of the standard current transformer and the sampling rate adaptive module respectively;
[0052] The sampling rate adaptive module receives the sampling value message output by the testing electronic current transformer, and judges the sampling rate of the testing electronic current transformer; then transmits the sampling rate a...
Embodiment 2
[0065] The difference between this embodiment and Embodiment 1 is:
[0066] Such as Figure 4 As shown, the described electronic current transformer performance test system also includes an electromagnetic current transformer and a delay compensation module;
[0067] The primary side of the electromagnetic current transformer is connected in series with the primary side of the testing electronic current transformer; the output terminals of the electromagnetic current transformer and the testing electronic current transformer are respectively connected to the input terminals of the delay compensation module;
[0068] The electromagnetic current transformer is provided with a synchronous signal inlet for accessing the synchronous signal;
[0069] The delay compensation module compares the time of the received sampled value message output by the test electronic current transformer with the time of the real-time analog output of the electromagnetic current transformer, and the te...
Embodiment 3
[0075] An electronic current transformer performance test method, comprising the following steps:
[0076] (1) Input synchronous signals to standard current transformers and test electronic current transformers;
[0077] (2) Test the electronic current transformer output sampling value message to the sampling rate adaptive module, after the sampling rate adaptive module judges the sampling rate, send the sampling rate and the received sampling value message to the merging unit module; The standard current transformer outputs the sampled value message to the merging unit module;
[0078] (3) The merging unit module compares the sampled value message output by the test electronic current transformer with the sampled value message output by the standard current transformer according to the received sampling rate, and uses the measured value of the standard current transformer as the standard value, to verify the accuracy of the test electronic current transformer.
[0079] Pref...
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