Detailed Introduction of User Electricity Consumption Information Collection System

The electricity consumption information collection system realizes power consumption monitoring, implementation of ladder pricing, load management, and line loss analysis through the collection and analysis of power consumption data of distribution transformers and end users, and finally achieves automatic meter reading, off-peak power consumption, Electricity inspection (anti-electricity theft), load forecasting and saving electricity cost etc. The establishment of a comprehensive user electricity consumption information collection system requires the construction of the system master station, transmission channels, collection equipment and electronic energy meters (ie smart meters). The coverage rate of State Grid Corporation's electricity consumption information collection is 100%.

1. Development of electricity consumption information collection

According to the national grid plan, the coverage rate of the electricity consumption information collection system will reach 100% by the end of 2014, and "full coverage, full collection, and full cost control" will be realized for all users in the direct supply and direct management area. According to statistics, by the end of 2010, all provinces basically completed the 15% coverage requirement.

Compared with the State Grid, the China Southern Power Grid and the rural power grid have a short period of popularization of electricity information collection systems, low coverage, and the total capacity is about 50% of the State Grid. China Southern Power Grid is actively formulating various standards. After the rural power grid is placed under the direct control of the State Grid, it will also intensify the transformation of the power consumption side.

In November 2010, six ministries and commissions including the National Development and Reform Commission, the Electricity Regulatory Commission, and the Energy Bureau jointly issued the "Power Demand Side Management Measures". , thus opening up the market capacity space of the electricity consumption information collection system. In the next 4 to 5 years, the average annual demand for private network terminals is 225,000 units, and the average annual demand for public network terminals is 900,000 units. During the "Eleventh Five-Year Plan" period, the State Grid's investment in the electricity consumption information collection system was less than 7 billion yuan, while during the "Twelfth Five-Year Plan" period, the State Grid's investment in the electricity consumption information collection system will exceed 50 billion yuan. In the whole set of electricity information collection system, the bidding construction progress of the terminal electric meter is the fastest, and the actual completion in 2010 exceeded the plan at the beginning of the year by 30%. The substantial increase in investment in the industry and the rapid growth of the industry mean that the electricity consumption information collection system industry will enter a period of high growth.

Comprehensive construction of electricity consumption information collection system can realize full coverage of all power users and gateways, realize online monitoring of metering devices and real-time collection of important information such as user load, electricity, voltage, etc., and provide the basis for related systems in a timely, complete and accurate manner Data provides support for the analysis and decision-making of all aspects of enterprise management, and provides an information basis for the realization of intelligent two-way interactive services.

State Grid plans to invest nearly 300 billion yuan in the construction of smart grids during the "Twelfth Five-Year Plan", of which the largest proportion of investment is in electricity consumption. The total investment amount from 2011 to 2015 is about 90 billion yuan. Among them, the investment in 2011-2015 was 167.9, 204.20, 208.30, 193.30, and 12.64 billion yuan respectively.

According to the "Twelfth Five-Year Plan", the coverage rate of the electricity information collection system will reach 65% by the end of 2012, and 55 million smart energy meters will be installed; by the end of 2013, it will reach 90%, and 55 million smart energy meters will be installed; by the end of 2014, the coverage will reach 100%. 22 million smart energy meters were installed; during the "Twelfth Five-Year Plan" period, "full coverage, full collection, and full cost control" of all users in the direct supply and direct management area were realized. Through the construction of the electricity consumption information collection system, it provides a basic support platform for the realization of intelligent two-way interactive services, and effectively improves the level of marketing management.

2. Definition of electricity consumption information collection

The power consumption information collection system of power users is a system for collecting, processing and real-time monitoring of power consumption information of power users, realizing automatic collection of power consumption information, abnormal measurement monitoring, power quality monitoring, power consumption analysis and management, and related information release , distributed energy monitoring, information interaction of intelligent electrical equipment and other functions.

3. Acquisition terminal for electricity consumption information collection

The electricity consumption information collection terminal is the equipment for collecting electricity consumption information of each information collection point, referred to as the collection terminal. It is a device that can realize the collection of electric energy meter data, data management, two-way transmission of data, and forwarding or execution of control commands. Electricity consumption information collection terminals are divided into special variable collection terminals, centralized meter reading terminals (including concentrators and collectors), distributed energy monitoring terminals and other types according to the application site.

4. Dedicated collection of electricity consumption information collection

The data acquire terminal of special transformer is a device for collecting power consumption information of special transformer users, which can realize the collection of electric energy meter data, the monitoring of the working condition of electric energy metering equipment and the quality of power supply, as well as the customer's power load and Monitoring of electric energy, management and two-way transmission of collected data.

5. Centralized meter reading for electricity consumption information collection

The centralized meter reading terminal is a device for collecting electricity consumption information of low-voltage users, including concentrators and collectors. The concentrator refers to the device that collects the data of each collector or electric energy meter, processes and stores it, and can exchange data with the master station or handheld device at the same time. The collector is a device used to collect electric energy information of multiple or single electric energy meters, and exchange data with the concentrator. Collectors can be divided into basic collectors and simple collectors according to their functions. The basic collector reads and temporarily stores the data of the electric energy meter, and uploads the stored data to the concentrator according to the command of the concentrator. The simple collector directly forwards the commands and data between the concentrator and the energy meter.

6. Distributed collection of electricity consumption information

The distributed energy monitoring terminal is a device for monitoring and controlling the user-side distributed energy system connected to the public grid. The system is connected to the public grid for control.