Appointed subharmonic detection method based on cascade delay signal elimination method
A technology of delayed signal and detection method, which is applied in the field of power system and micro-grid specified sub-harmonic compensation, and can solve the problems affecting the dynamic performance of the system and increasing the amount of calculation, etc.
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[0074] In order to more effectively illustrate the correctness and applicability of the arbitrary harmonic extraction method based on the cascaded delay signal elimination method disclosed in the present invention, this embodiment builds a micro-distribution network composed of two distributed power generation units connected in parallel ,Such as figure 2 As shown, it mainly includes two parts: the main circuit and the harmonic extraction module:
[0075] The main circuit includes a small distribution network composed of two AC distributed power sources DG and loads. The parameters of the main circuit are shown in Table 1. In order to better verify the feasibility and superiority of the harmonic extraction method disclosed in the present invention, the distributed power sources DG1 and DG2 are replaced by two ideal three-phase voltage sources.
[0076] Table 1 Main circuit parameters
[0077]
[0078] A method for detecting specified sub-harmonics based on cascade delay ...
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