{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T22:41:56Z","timestamp":1761864116868,"version":"build-2065373602"},"reference-count":57,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2020,4,24]],"date-time":"2020-04-24T00:00:00Z","timestamp":1587686400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>Surge arresters may represent an efficient choice for limiting lightning surge effects, significantly reducing the outage rate of power lines. The present work firstly presents an efficient numerical approach suitable for insulation coordination studies based on an implicit Crank\u2013Nicolson finite difference time domain method; then, the IEEE recommended surge arrester model is reviewed and implemented by means of a local implicit scheme, based on a set of non-linear equations, that are recast in a suitable form for efficient solution. The model is proven to ensure robustness and second-order accuracy. The implementation of the arrester model in the implicit Crank\u2013Nicolson scheme represents the added value brought by the present study. Indeed, its preserved stability for larger time steps allows reducing running time by more than     60 %     compared to the well-known finite difference time domain method based on the explicit leap-frog scheme. The reduced computation time allows faster repeated solutions, which need to be looked for on assessing the lightning performance (randomly changing, parameters such as peak current, rise time, tail time, location of the vertical leader channel, phase conductor voltages, footing resistance, insulator strength, etc. would need to be changed thousands of times).<\/jats:p>","DOI":"10.3390\/en13082112","type":"journal-article","created":{"date-parts":[[2020,4,24]],"date-time":"2020-04-24T11:42:14Z","timestamp":1587728534000},"page":"2112","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Analysis of Metal Oxide Varistor Arresters for Protection of Multiconductor Transmission Lines Using Unconditionally-Stable Crank\u2013Nicolson FDTD"],"prefix":"10.3390","volume":"13","author":[{"given":"Erika","family":"Stracqualursi","sequence":"first","affiliation":[{"name":"Department of Astronautical, Electrical and Energy Engineering, University of Rome \u201cLa Sapienza\u201d, via Eudossiana, 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4771-9584","authenticated-orcid":false,"given":"Rodolfo","family":"Araneo","sequence":"additional","affiliation":[{"name":"Department of Astronautical, Electrical and Energy Engineering, University of Rome \u201cLa Sapienza\u201d, via Eudossiana, 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5040-0748","authenticated-orcid":false,"given":"Giampiero","family":"Lovat","sequence":"additional","affiliation":[{"name":"Department of Astronautical, Electrical and Energy Engineering, University of Rome \u201cLa Sapienza\u201d, via Eudossiana, 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6514-6807","authenticated-orcid":false,"given":"Amedeo","family":"Andreotti","sequence":"additional","affiliation":[{"name":"Electrical Engineering Department, University Federico II of Napoli, 80125 Napoli, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5896-4732","authenticated-orcid":false,"given":"Paolo","family":"Burghignoli","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Electronics and Telecommunications, University of Rome \u201cSapienza\u201d, via Eudossiana, 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7517-728X","authenticated-orcid":false,"given":"Jose","family":"Brand\u00e3o Faria","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, Instituto Superior T\u00e9cnico\u2014Universidade de Lisboa, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5766-9157","authenticated-orcid":false,"given":"Salvatore","family":"Celozzi","sequence":"additional","affiliation":[{"name":"Department of Astronautical, Electrical and Energy Engineering, University of Rome \u201cLa Sapienza\u201d, via Eudossiana, 18, 00184 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Liu, C.H., Muna, Y., Chen, Y.T., Kuo, C.C., and Chang, H.Y. 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