Electric power meter reading system

The wireless meter reading system is a power management automatic meter reading system based on GPRS technology developed by Shandong Lichuang Integrated Branch. It consists of an electric meter, a collector, a GPRS communication module, and an acquisition server. The collector collects the user's power consumption data in real time and collects the data to the server via GPRS. It has the characteristics of rapid and accurate data collection, rapid generation of statistical analysis of electricity usage, bill payment, etc. Compared with traditional manual meter reading and telephone line meter reading, it greatly improves efficiency. In addition to accurate and real-time meter reading, the system also provides device management functions such as alarms: open-box alarms, power-off alarms, reverse-phase alarms, over-temperature alarms, overload alarms, etc.; control: arrears for user arrears. It also provides data protection for power outages. It can still read and monitor data within 48-72 hours of a power outage. The system integrates SMS platforms. When an alarm is generated, SMS can be sent to relevant managers based on specific content. The system provides a wealth of interfaces that can be linked with the MIS system of the electrical industry system or for secondary development. The meter reading software system database is a SQL Server 2000 database and runs on an operating system such as Windows 2000/XP/2003, which is easy to use. There is no limit to the number of users that the software can manage.

n to achieve the function:

(1) Set the parameters of the meter to read various metering and management data;

(2) Metering data statistics, query, backup, report, and chart generation;

(3) Plant management;

(4) automatic meter reading, regular reporting, real-time inquiries, etc.;

(5) Power-down data preservation;

(6) Comprehensive processing of instantaneous data;

(7) System data backup, archive and external output data;

(8) historical data event recording function;

(9) Real-time alarm;

(10) Calculate the line loss based on the meter relationship on the line;

(11) Multiple analog and digital inputs can be provided to realize other functions such as open-box alarm, power-off alarm, reverse-phase alarm, over-temperature alarm, over-voltage alarm, over-current alarm, overload alarm, tilt, or movement alarm;

(12) remote control power-off function;

(13) Rich collection parameters, such as:

â—† Current, previous month, forward active, reverse active, and reactive four-quadrant total and tip, peak, flat, and valley charge rates;

â—† Time of maximum demand and maximum demand of forward, reverse, active and reactive power;

â—† Active power, reactive power, three-phase voltage, three-phase current, power factor;

â—† The cumulative number of pressure loss, the accumulated time of pressure loss, the start and end time of the power cut of the recorder, etc.;

â—† Unit time load curve, three-phase current curve, three-phase voltage curve, active power curve, reactive power curve, power factor curve.


n index indicator:

(1) System capacity: Collector capacity: Connect up to 255 power meters; System capacity: In principle, there is no limit, the number one on each watch can be determined based on the needs and the capacity of the host computer;

(2) Communication distance: collector and meter: RS-485 interface and shielded twisted pair. Master station and collector: GPRS network is used as the communication medium, and the distance is not limited;

(3) Communication success rate: Between the master station and the collector, the TCP/IP protocol based on reliable connection is adopted, the success rate of communication is 100%, and the success rate of communication is above 90% using UDP protocol.

(4) Full compliance with the IEC1107 standard and Guodian DL/T645 "multi-function energy meter communication protocol";

(5) Working power: AC 220V ± 20%, 50Hz;

(6) Communication speed: 1200bps to 33.6kbps;

(7) Collector power consumption: ≤ 1.5W

(8) Working environment conditions: temperature: -10°C to 50°C, relative humidity: ≤ 90%;

(9) compressive strength: 2KV; insulation resistance: 2M ohms;

(10) The accuracy rate of meter data, reliability, and readings reached 100%.

This entry was posted in on