Frequency Measurement Algorithm for Distribution Network Based on FIR-MSMA

Mingshuai ZHANG; Zhiquan GUO; Wei XIA; Bo LI; Xuming TANG; Yingkang WANG

doi:10.16513/j.2096-2185.DE.2409109

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Distributed Energy ›› 2024, Vol. 9 ›› Issue (1) : 72-79. DOI: 10.16513/j.2096-2185.DE.2409109

Application Technology

Frequency Measurement Algorithm for Distribution Network Based on FIR-MSMA

Mingshuai ZHANG ¹ ,
Zhiquan GUO ²^,³ ,
Wei XIA ¹ ,
Bo LI ²^,³ ,
Xuming TANG ¹ ,
Yingkang WANG ¹

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Abstract

Aiming at the problem of synchrophasor measurement with harmonics, out-of-band interference, and other dynamic interferences, a new frequency measurement algorithm combining a finite impulse response filter with M-class synchrophasor measurement algorithm (FIR-MSMA) is proposed for distribution networks. Firstly, the least squares method is utilized to design a FIR-1 filter for extracting the low-frequency signals, and to design a FIR-2 filter for measuring frequency. Then, the parameter setting principles for two types of filters are analyzed. Finally, simulation examples in Matlab software are performed to verify the dynamic measurement performance of the proposed algorithm. The results show that the FIR-MSMA algorithm has stronger anti-interference ability and higher measurement accuracy than the discrete Fourier transform algorithm and the sliding average filter algorithm.

Key words

distribution network / synchrophasor measurement unit / frequency measurement / finite impulse response filter / frequency error

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Mingshuai ZHANG , Zhiquan GUO , Wei XIA , et al . Frequency Measurement Algorithm for Distribution Network Based on FIR-MSMA[J]. Distributed Energy Resources. 2024, 9(1): 72-79 https://doi.org/10.16513/j.2096-2185.DE.2409109

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