葛群 叶通 王波 胡玉松 许立阳

摘 要：为解决目前我国海上平台电气安全管控过程中缺乏低压交流系统中早期隐患预警能力的问题，研制了海上平台低压交流系统电气安全监测预警系统。该系统采用边云协同架构，在各级配电箱设置具有中早期隐患捕捉能力的边缘计算型监测终端，并在云端部署具有时序预测算法的隐患预警平台。该系统针对复杂电磁环境、耐盐性能和可靠性进行了加强设计，以适应海上平台场景潮湿、高盐和人力资源稀缺的环境特点。经测试试点，该系统报警准确率高于99.95%，投入使用后电气安全故障溯源排查平均时间从20h下降至30min，所有试点项目渐变性因素引发的电气安全事故数为0，达到了管控电气安全中早期隐患的效果，同时提升了电气维护人员的工作效率。

关键词：PLC;高空作业车;电气控制系统;蜘蛛式

中图分类号：TP277 文献标识码：A 文章编号：1001-5922（2021）06-0094-05

Abstract：In order to solve the problem of lack of early warning ability of low-voltage AC system in the process of electrical safety control of offshore platforms in China， an electrical safety monitoring and early warning system of low-voltage AC system of offshore platforms is developed. The system adopts a side-cloud collaborative architecture， the edge computing monitoring terminal with the ability of catching the early and middle hidden dangers is set up in the distribution boxes at all levels， and the hidden danger warning platform with the time series prediction algorithm is deployed in the cloud. The system is designed for the complex electromagnetic environment， salt resistance and reliability to adapt to the environment characteristics of humid， high salt and scarce human resources in offshore platform scene. After testing， the alarm accuracy of the system is higher than 99.95%. After putting into use， the average time of electrical safety fault tracing and troubleshooting is reduced from 20 hours to 30 minutes. The number of electrical safety accidents caused by gradual factors in all pilot projects is 0， which achieves the effect of controlling early hidden dangers in electrical safety and improves the working efficiency of electrical maintenance personnel.

Key words：offshore platform; hidden danger warning; edge calculation; timing series prediction

0 引言

海上平臺相对于一般用电环境环境潮湿、多盐雾，此外风浪带来高速气流摩擦线路和设备使供电线路产生谐波[1]。另外，海上平台备件储存更换不易、巡检维修人力成本高、平均事故损失较大。近年来，一方面电气安全原因导致的变压器过热、仪表数据波动、电容器过载损害事故多发，已经日渐引起重视[2];另一方面因短路、触电等严重电气安全事故导致重大人身伤亡和损失的案例并不多[3]。所以，海上平台的电气安全治理工作总体而言，要求高于社会平均，但主要的工作目标是低压交流系统中的中小故障，因此除了加强电气设备采购、工程环节的质量管理，最重要的工作方式就是对电气安全隐患早发现、早管控、早消除。……