Interaction characteristics between multi‐port hybrid DC circuit breaker and MVDC distribution system under diversified working conditions. Issue 14 (24th September 2020)

• Record Type: Journal Article
• Authors: Wen, Weijie; Li, Pengyu; Cao, Hong; Liu, Haijin; Wang, Xingguo; Lv, Hui; Li, Bin; Popov, Marjan
• Is Part Of: IET renewable power generation. Volume 14:Issue 14(2020)
• Page Start: 2720
• Page End: 2726
• Publication Date: 2020-09-24
• Subjects: power distribution faults -- circuit breakers -- power electronics -- power system transients; multiport hybrid DC circuit breaker -- MVDC distribution system -- diversified working conditions -- power electronics -- medium voltage direct current distribution system -- direct current circuit breakers -- power system reliability -- multiport hybrid DCCB -- negative voltage source -- interaction characteristics -- renewable sources -- power system flexibility -- PSCAD‐EMTDC -- transient current‐voltage distribution pattern; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2019.1031
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : Due to the progressive penetration and usage of renewable sources and loads based on power electronics, medium voltage direct current (MVDC) distribution system is getting broad attention. Direct current circuit breakers (DCCBs) are of vital importance for the reliability and flexibility of power system. With features of low cost and micro‐operating losses, multi‐port hybrid DCCB with negative voltage source (NVS) has been proposed by the authors and might be a better choice. To further promote its industry application in MVDC system, interaction characteristics between DCCB and power system are investigated in this study. The structure of multi‐port hybrid DCCB is briefly introduced. Then, considering the diversified working conditions, e.g. single fault, multiple faults and switching load current with random direction, the cooperation sequence of components in multi‐port DCCB under all these working conditions is proposed, respectively. Then, based on simulation model established in PSCAD/EMTDC, transient current/voltage distribution pattern inside multi‐port DCCB and its mechanism are discussed, and simulation results have verified the superiority and effectiveness of multi‐port hybrid DCCB with NVS in MVDC system.