云架构下弱电网自动监控方法

Automatic Monitoring Method of Weak Power Grid Under Cloud Architecture

为实时监控弱电网的运行状态,保证弱电网的供电稳定性,提出云架构下弱电网自动监控方法。利用智能云架构设计了数据层、聚合层、服务层、展示层4层弱电网自动监控架构;使用数据层采集并转换弱电网监控数据;利用聚合层的聚合框架模块合并接收到的转换数据;在服务层使用开环相位检测技术的差频相位跟踪算法实时获取弱电网的同步相位,计算差频相位分量;调整差频周期量,采用开环检测的方法检测弱电网的实时频率信息;比较弱电网频率值与频率阈值,运用弱电网监控告警模块,实现弱电网自动监控及告警。实验结果表明:该方法的弱电网频率检测时间始终低于1 s,并能依据频率检测结果及时发出告警信号;不同信噪比下的弱电网自动监控时延均稳定在0.2 s附近,提高了监控的实时性。

In order to monitor the operation status of weak powergridin real time and ensure the power supply stability,an automatic monitoring method of weak power grid under cloud architecture is proposed.Using smart cloud architecture,four layers of weak power network automatic monitoring architecture are designed,including data layer,aggregation layer,service layer and display layer.The data layer collects and converts weak grid monitoring data.The aggregation framework module of the aggregation layer merges the received transformation data.At the service layer,the beat frequency phase tracking algorithm using open-loop phase detection technology is used to obtain the synchronization phase of the weak power grid in real time,and the beat frequency phase component is calculated.The open-loop detection method is used to detect the real-time frequency information of the weak power grid to adjust the difference frequency period.The weak grid frequency value is compared with the frequency threshold.The weak power grid monitoring and alarm module are used to realize automatic monitoring and alarming of weak power grids.The experimental results show that the detection time of the weak grid frequency of this method is always less than 1 s,and the alarm signal can be issued in time according to the frequency detection results.The delay of automatic monitoring of weak power grids under different signal-to-noise ratios is stable at around 0.2 s,which improves the real-time monitoring.