基于倒排索引的铁道供电集群监控H-CRQ技术  

H-CRQ Technology of Railway Power Supply Cluster Monitoring Based on Inverted Index

作　　者：屈志坚 范明明 赵亮 朱丹 孙旭兵 王子潇 QU Zhijian;FAN Mingming;ZHAO Liang;ZHU Dan;SUN Xubing;WANG Zixiao(School of Electrical & Automation Engineering, East China Jiaotong University, Nanchang 330013, China;Changzhou Rail Transit Development Co., Ltd., Changzhou 213000, China)

机构地区：[1]华东交通大学电气与自动化工程学院,江西南昌330013 [2]常州市轨道交通发展有限公司,江苏常州213000

出　　处：《铁道学报》2020年第11期75-83,共9页Journal of the China Railway Society

基　　金：国家自然科学基金(51867009);江西省重点研发计划(20192BBEL50006);江西省自然科学基金(20202BAB204023)。

摘　　要：针对铁道供电监控海量数据查询响应越来越慢,易造成调度界面卡屏的问题,结合倒排二级索引和动态缓存机制,提出一种铁道供电综合监控海量数据的H-CRQ集群监控处理方法。将铁道供电监控系统数据结构改变为倒排索引结构,使查询直接作用在特定关键词的检索上;避免逐条扫描;并将索引查询结果储存于缓存中;然后设计一种H-CRQ更新替换缓存的结构;将热点数据驻留缓存;避免高重复度数据逐条扫描和反复搜索;进一步提高查询效率。以天水-兰州铁路10 kV供电监测系统的实测数据为算例;进行查询响应测试。结果表明基于倒排索引的铁道供电集群监控H-CRQ技术可有效提高海量数据查询效率;且验证了新方法在缓存空间设置合理条件下;可解决铁道供电监控系统查询响应问题。To address the increasingly slower query response of mass data of railway power supply monitoring results in the delay of the scheduling interface screen,this paper proposed an H-CRQ cluster monitoring method of railway power supply integrated monitoring mass data by combining the inverting secondary indexes and dynamic caching mechanisms.The data structure of railway power supply monitoring system was changed into inverted index structure,to cause the query directly act on the retrieval of specific keywords,avoiding scanning one by one,with the index query results stored in the cache.A structure of H-CRQ update was designed to replace the cache structure,to host the hot data in the cache,to avoid high-repetition data scanning and repeated searching,and to further improve the query efficiency.Based on the measured data of 10 kV power supply monitoring system of Tianshui-Lanzhou railway,the query response test was carried out.The results show that the H-CRQ technology of railway power supply cluster monitoring based on inverted index can effectively improve the efficiency of massive data query.It is proved that the new method can solve the query and response problem of railway power supply monitoring system under the condition of reasonable cache space setting.

关 键 词：铁道供电 海量数据 倒排索引 热点缓存 集群监控 

分 类 号：U233[交通运输工程—道路与铁道工程] TM73[电气工程—电力系统及自动化]