1. Smart power distribution is a new stage in the development of Internet technology and Internet of Things technology
With the development of energy Internet of things, the management requirements of distribution system are higher and higher. Based on the new generation of information and communication technology such as "cloud, big, matter, move, intelligence" and so on, the power distribution Internet of Things came into being. "Internet + power monitoring" is a form of power network born from the deep integration of traditional industrial technology and Internet of Things technology. It has become a new model and new direction for the development of energy transition.
"Internet + power monitoring" is aimed at traditional power distribution systems. On the basis of improving safety and reliability and providing intelligent and efficient monitoring, it builds an advanced management mode of "unattended" power distribution system for users, relying on the application of modern technology to make the operation monitoring and management of the power distribution system is more "intelligent".
2. Intelligent demand for power distribution system
Pain points of traditional power distribution system:
1) Incomplete data, difficult to monitor
Building power distribution systems and industrial enterprise power distribution systems generally have various problems such as inadequate basic monitoring equipment, wide distribution of sites, and difficulty in wiring and communication, which result in unable to obtain power data in time and achieve comprehensive real-time monitoring of power operating parameters.
2) Inspection without supervision, maintenance cost is high
Routine inspection relies on manpower, lacks effective supervision means, and invests a lot of manpower and material resources, so the operation and maintenance cost is difficult to control.
3) There is no early warning of the incident, and the repair loss is large
The operation status of distribution system can not be accurately obtained, early warnings and alarms can not be provided before the event occurs, and the efficiency of finding and handling problems after emergency repair is low, and the economic loss is difficult to predict.
Demand for power monitoring system
1) Real-time monitoring, real-time acquisition of power data
7 * 24h real-time comprehensive detection, grasp the operation status of power distribution system at any time, and realize all-round online and offline supervision.
2) Early warning of events, timely notification and advance disposal
When the system finds the hidden danger of the event, it will give an active alarm, and timely notify the operation and maintenance personnel, and handle it in advance to prevent the occurrence of accidents.
3) Data analysis to grasp the trend of operation changes
Monitor the user's site, loop and equipment in an all-round and all time period, real-time record the parameters and state changes, and visually present the trend of parameter changes.
4) Environmental monitoring to master the distribution environment at any time
Real time acquisition of power distribution environment data can help to master the environmental status at any time and realize unattended operation.
3. Power monitoring solution
Based on IoT sensing, mobile internet, cloud computing technology, big data and other modern information technologies, the power monitoring system (PMS) integrates various terminal hardware such as smart meters, comprehensive protection devices, smart circuit breakers, and temperature control instruments, etc., through network communication equipment, to realize data collection, remote control, event alarms, data analysis and other business functions, so as to improve the comprehensive management level of user power distribution.
The system monitors the user’s site, loop, and equipment in an all-round and all-time period, records all parameters and status changes in real time, notifies the event in time, and plays the core role of power monitoring management to help users fully obtain data, real-time control status, reduce operation and maintenance costs, improve work efficiency and accelerate the response speed of electrical abnormalities, which greatly improve the reliability, safety and intelligence of the power distribution system.
System architecture diagram
1) Intelligent access of terminal equipment
Realize the access to the terminal equipment of the power distribution system (smart meters, comprehensive protection devices, smart circuit breakers, temperature control instruments, etc.), and conduct comprehensive measurement and monitoring of various electrical parameters such as voltage, current, and power of the distribution line.
2) Diversified communication modes
The configuration of communication system is flexible, and the integration is convenient and reliable. According to the user's requirements, it provides a variety of data transmission modes such as Ethernet / GPRS / 4G / Nb IOT.
3) APP mobile terminal
The system has WEB terminal and APP mobile terminal, giving full play to mobile portability, opening up the online and offline service system, realizing data query, event real-time reminder, event processing registration and other functions.
4) Business functions can be expanded
The system reserves diversified interfaces to create conditions for users' customized functions and expand system functions according to actual business scenarios.
4. Embodiment of system value
1) Data visualization display
The system displays data in a graphical way to help users more efficiently obtain power parameters, event information, data trends and other key operation index data of the distribution system.
2) Data intelligent analysis
The intelligent data analysis system provides intelligent data analysis function, automatically summarizes and compares the operation data and energy consumption data, showing the trend of data change.
3) All day unattended
7*24h platform monitoring, event information, status information is timely and actively pushed, precise positioning, troubleshooting, event processing, remote meter reading and automatic recording of operating data, comprehensive use of video monitoring and environmental monitoring technologies to realize site intelligence and unattended.
4) Data reliability assurance
The system software adopts a redundant design, which will not cause data loss and system paralysis when a single module/component fails or even a partial cross failure; the data disaster recovery design scheme is adopted to automatically back up system data to prevent data loss.
5) Database optimization design
The system adopts Timescale DB time series database, which supports various data types, and ensures efficient database access and high-speed data statistics functions.
6) Precise management of authority
Through the dual configuration of user roles and data authority, the range of user system authority is accurately configured to achieve precise management of system authority and improve system data security.
Through the application of "Internet + power monitoring" in the intelligent power distribution room, it plays an important role in operation optimization, early warning and prevention, energy management, auxiliary decision-making, and power consumption protection, so as to improve the breadth and depth of power distribution information perception and promote the intelligent operation of distribution system.
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