摘要
变电站内蓄电池监测与核容的关键问题是对蓄电池充放电,采集电气参数来判定电池的状态。蓄电池参数的非线性、离散性和滞后性使得常规的能量管理系统无法准确快速控制核容时的充放电,特别是现有的恒压充电方式容易造成过度充电,温度骤升。通过反馈比例积分(PI)控制,采用反馈电压模式控制和分段电流模式方法将电池电压、电流和温度保持在安全范围内的同时,提升核容工作效率,保护电池健康。MATLAB/Simulink仿真显示,PI控制反馈参数可较快使蓄电池达到最佳充电状态。
The key problem of battery monitoring and capacity check in substation is to charge and discharge the battery,and collect electrical parameters to determine the state of the battery.The nonlinearity,discreteness and hysteresis of battery parameters make the conventional energy management system unable to accurately and quickly control the charging and discharging of nuclear capacity,especially the existing constant voltage charging mode is easy to cause overcharging and sudden temperature rise.Through feedback proportional integral(PI)control,feedback voltage mode control and segmented current mode method are adopted to keep the battery voltage,current and temperature within the safe range,improve the working efficiency of the capacity check and protect the battery health.MATLAB/Simulink simulation shows that PI control feedback parameters can quickly make the battery reach the optimal charging state.
作者
任瑞军
路涛涛
孙小娣
管鑫
陈亚琼
REN Ruijun;LU Taotao;SUN Xiaodi;GUAN Xin;CHEN Yaqiong(State Grid Gansu Electric Power Company Training Center,Lanzhou 730070,China)
出处
《电工技术》
2023年第4期1-3,6,共4页
Electric Engineering
关键词
蓄电池核容
分段充电
电压反馈
PI调节
battery capacity check
sectional charging
voltage feedback
PI regulation
