1、 The online monitoring system for power quality provides two curve analysis interfaces: real-time curve and historical trend. By calling the real-time curve interface of the relevant circuit, the current load operation status of the circuit can be analyzed. For example, by calling the real-time curve of a certain distribution circuit, the signal fluctuation caused by the electrical equipment of the circuit can be analyzed. The historical trend of the system means that the system can view the historical trend of all stored data, Convenient for engineering personnel to conduct quality analysis on the monitored distribution network

IIPower quality monitoringSeveral functions of the system

1. Display function

The device panel is equipped with a large screen LCD display, which displays real-time data of major power quality monitoring indicators in a graphical manner

2. Setting functions

The device hardware clock can be set, monitoring parameters can be set, modified, and viewed, and password protection is provided

3. Record storage function

Basic monitoring indicators and monitoring indicators can be saved in real-time, and the statistical time interval can be set. Data can be saved on the device for at least 1 year in 3 minutes

4. Statistical function

The device has online statistical function for main monitoring indicators, which can calculate the average value, 95% probability maximum, etc. of monitoring indicators within a time period

5. Communication function

The device provides multiple communication interface methods to achieve real-time transmission of monitoring data or timed extraction and storage records. It can communicate with the remote power quality management center through industrial Ethernet interface, or communicate with the remote through RS232C/RS485 interface via Modem or GPRS

6. GPS time synchronization function

The device has a GPS hard time synchronization interface and can accept IRIG-B code time synchronization or second pulse time synchronization signals, maintaining consistency with the clock of the remote management center

7. Event triggered wave recording function

Event triggering conditions can be set according to customer requirements (manual or automatic), real-time data before and after event triggering can be recorded and saved, and event logs can be saved for query