CAJ | 학술논문

为了提取两类小电流接地系统K(1)(即单相接地)故障时电力参数信息,本文运用MATLAB电力专业模块库SimPowerSystems构建了具有三条线路的35 kV配电网的仿真模型,通过设置线路长度为8、12、15 km ,并选择故障时刻为0.045 s时进行实验.最终取得两类小电流接地系统分别在故障距离为线路2的3 km和6 km处的电流幅值和相位值.与以往单纯以观测故障波形为主的各种电力系统故障仿真不同,文中所提取的故障信息为电力参数的实时量化值,其所携带的故障特征可直接为这类故障的定位提供有利帮助.
위료제취량류소전류접지계통K(1)(즉단상접지)고장시전력삼수신식,본문운용MATLAB전력전업모괴고SimPowerSystems구건료구유삼조선로적35 kV배전망적방진모형,통과설치선로장도위8、12、15 km ,병선택고장시각위0.045 s시진행실험.최종취득량류소전류접지계통분별재고장거리위선로2적3 km화6 km처적전류폭치화상위치.여이왕단순이관측고장파형위주적각충전력계통고장방진불동,문중소제취적고장신식위전력삼수적실시양화치,기소휴대적고장특정가직접위저류고장적정위제공유리방조.
In order to extract the power parameters information of two types of little cur‐rent grounding system K(1) (single‐phase) fault ,a simulation model of 35 kV distribution system with three lines has been established by using MATLAB SimPowerSystems tool . By setting the line length in 8 ,12 ,15 km and selecting fault time in 0 .045 s ,the experi‐ment eventually get the current amplitude and phase values of line 2 which fault distance is 3km and 6km in two types of little current grounding system .Deferent from those power system fault simulation based on simple observation of the fault waveform ,the fault infor‐mation in this article is the real quantization values of the power parameters .The fault characteristics carried by these fault information can provide a favorable help for the loca‐tion of such fault .