电力系统及其自动化学报2018，Vol.30Issue(5)：21-27,7.DOI:10.3969/j.issn.1003-8930.2018.05.004
基于CAN总线的煤矿企业电网接地故障选线系统设计
Design of Grounding Fault Line Selection System for the Power Grid in Coal Mining Industry Based on CAN Bus
摘要
Abstract
In general,the power grid in coal mining industry is a small current grounding system,which has a long line distance and a large number of branches.Therefore,the fault line selection device based on single chip or digital signal processing(DSP)has some limitations therein.In this paper,we designed a fault line selection system for a small cur?rent grounding system by separating the data collection module from the data processing module in the original line se?lection device and using a high-precision zero-sequence inductor with self-calibration function.In this way,the accura?cy of data collection was improved.The core of this system was the fault line selection platform,which was based on multiple communication ports and the integration of a variety of algorithms;it was also interconnected with local intelli?gent zero-sequence inductor,integrated system and remote terminal through the communication network,achieving functions such as fault line selection,fault recording and remote monitoring. Considering that the power grid in coal mine industry has a large number of outlets and a large volume of data transmission,we chose a controller area network (CAN)bus communication mode between the fault line selection platform and the local intelligent zero-sequence induc?tors.Moreover,we solved the data synchronization problem between local intelligent zero-sequence inductors in differ?ent places.Experiment results show that the data obtained using this synchronization method can meet the requirement for phase accuracy from the fault line selection algorithm,and this system can be applied to the small current grounding system in coal mining industry.关键词
小电流接地系统/煤矿企业/故障选线系统/故障定位/时间同步Key words
small current grounding system/coal mining industry/fault line selection system/fault location/time syn⁃chronization分类
信息技术与安全科学引用本文复制引用
石峥,李永丽,宋金钊,刘勇,姜国琴,李圣君..基于CAN总线的煤矿企业电网接地故障选线系统设计[J].电力系统及其自动化学报,2018,30(5):21-27,7.基金项目
国家自然科学基金资助项目(51177108,51577128) （51177108,51577128）
