输电线路关键线夹运行状态智能预警系统
受自然和人为因素影响,部分输电线路关键线夹(耐张线夹、导线接续管等)接触电阻过大,在遇到大负荷时存在过热风险,其温度可能超过安全限值,此时线夹不仅存在烧损风险,同时其机械强度也会下降,严重影响线路运行安全。
输电线路
耐张线夹
导线接续管
安全运行
测温传感器
集中器
受自然和人为因素影响,部分输电线路关键线夹(耐张线夹、导线接续管等)接触电阻过大,在遇到大负荷时存在过热风险,其温度可能超过安全限值,此时线夹不仅存在烧损风险,同时其机械强度也会下降,严重影响线路运行安全。
输电线路关键线夹运行状态智能预警系统由测温传感器、集中器、软件后台组成。通过在各关键线夹处装设测温传感器,并就近安装集中器,通过APN专网将数据传输至软件后台,可实现各输电线路线夹等关键点处的温度监测、温升警示、缺陷定位。
通过对输电线路线夹隐患进行早期预警和故障趋势预测,即可有针对性地在事故发展初期采取措施、及时维修,防止事故扩大,对电网的安全运行具有重要意义。
■ 主要功能
•状态监测
实时获取各关键线夹的温度,绘制历史温度曲线与温升预测曲线。
•缺陷预警
基于大数据分析算法,实现易发生热故障点的智能识别和故障分级预警。
•故障趋势预测
对严重热故障缺陷点绘制温升预测曲线,评估安全运行时间。
•负荷监视(选配)
线路运行电流实时监测。
软件后台
■ 主要技术指标
1)适用于110kV~500kV电压等级输电线路(杆塔);
2)测温传感器通信稳定性高,易安装,免维护,使用寿命≥5年;
3)单台集中器最大支持24个测点;
4)宽工作温度范围(-40℃~120℃),高防护等级,能适应户外恶劣气候条件;
5)测温范围及精度:-50℃~150℃,±2℃。
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