基于电力载波通信的直流系统蓄电池组在线监测
Power Line Communication-based Online Monitoring of DC Battery Packs
李煜 1陈柯1
作者信息
- 1. 淮沪电力公司田集电厂,安徽淮南 232000
- 折叠
摘要
由于通信传输难以适应直流系统蓄电池组状态数据自身的差异化属性,使得对其监测存在较大误差,因此提出基于电力载波通信的直流系统蓄电池组在线监测研究.分别围绕自放电率状态、放电速率状态以及放电倍率状态获取具体的直流系统蓄电池组状态数据,利用OFDM对电力载波通信的信道进行自适应处理,将原始具有频率选择性的一个电力载波通信宽带信道划分为多个平坦窄带子信道,结合直流系统蓄电池组状态监测数据的传输需求分配对应的发送功率和信息比特.在测试结果中,设计的监测方法不仅对测试蓄电池组放电率监测的相对误差较为稳定,而且具体的误差水平也相对较低,始终稳定在2.0％以内,最大值仅为1.89％,最小值也仅为1.26％.
Abstract
Because communication transmission is difficult to adapt to the differentiation of DC system battery data,there is a large error in its monitoring effect.Therefore the power line communication-based online monitoring of DC system battery packs was studied.Specific DC system battery state data were obtained by focusing on the status data of self-dis-charge rate,discharge rate,and discharge ratio.OFDM was used to carry out adaptive processing of power line communi-cation channels,and the original frequency selective broadband channel of power carrier communication was segmented in-to multiple flat narrow band channels.According to the transmission requirements of DC battery status monitoring data,the corresponding transmission power and information bits were allocated.In the test results,the proposed method not only had a relatively stable relative error of the test battery discharge rate monitoring results,but also had a relatively low error level,which maintained stable within 2.0％with a maximum of only 1.89％and a minimum of only 1.26％.
关键词
电力载波通信/直流系统/蓄电池组/在线监测/状态数据获取/OFDM/宽带信道/发送功率/信息比特Key words
power line communication/DC system/battery pack/online monitoring/status data acquisition/OFDM/broadband channel/transmission power/information bit引用本文复制引用
出版年
2024
NETL
NSTL
万方数据