CAJ | 학술논문

研究了电气化铁路对电力系统220 kV 输电线路微机保护装置选相元件的影响。根据某地区电网实际参数，在 PSCAD中分别搭建了电力机车模型，基于相电流差突变量和序分量原理的微机保护装置选相元件模型。在PSCAD仿真中，相电流差突变量选相元件在不同工况下均能正确选出故障相，序分量选相元件在电铁功率较大时不能正确选出故障相，故电气化铁路对相电流差突变量选相元件影响较小，为在电气化铁路运输任务较重地区装设选相元件提供了理论依据。
연구료전기화철로대전력계통220 kV 수전선로미궤보호장치선상원건적영향。근거모지구전망실제삼수，재 PSCAD중분별탑건료전력궤차모형，기우상전류차돌변량화서분량원리적미궤보호장치선상원건모형。재PSCAD방진중，상전류차돌변량선상원건재불동공황하균능정학선출고장상，서분량선상원건재전철공솔교대시불능정학선출고장상，고전기화철로대상전류차돌변량선상원건영향교소，위재전기화철로운수임무교중지구장설선상원건제공료이론의거。
This-paper-researches-the-influence-of-electrified-railway-on-phase-selector-of-digital-protection-device-of-220-kV-power-transmission-line-in-power-system.-According-to-the-actual-parameters-of-a-regional-power-system,-the-electric-locomotive-model,-the-phase-current-difference-superimposed-phase-selector-model-and-the-sequence-component-phase-selector-model-are-built-in-PSCAD.-In-PSCAD-simulation,-the-phase-current-difference-superimposed-phase-selector-model-can-correctly-select-the-fault-phase-in-different-conditions-and-the-sequence-component-phase-selector-model-can’t-select-the-fault-phase-when-the-electric-railway-power-is-larger,-so-this-paper-reaches-the-conclusion-that-electrified-railway-on-the-phase-current-difference-superimposed-phase-selector-has-little-effect.-It-provides-principle-for-installation-the-phase-selection-element-in-the-electric-railway-transportation-of-heavy-task-area.