【正文】 2004附 錄一、英文原文：Construction and Application of Electric Energy Information Acquisition SystemZHU Enguo, LIU XuanI. INTRODUCTIONWith the rapid development of science and technology and the increment of information management level, electric power panies have built many load management systems and concentrated meter reading systems, which play an important role in electric power security production. But these acquisition systems are small, scattered, isolated and the overall collection coverage ratio is very low. They cannot e into being an integrated acquisition platform covering all the power users. They have many types of equipments and munication methods but there is no uniform system construction standard. The prehensive data utilization level of these acquisition systems is very low and cannot meet the needs of all the levels and professions. How to improve the automation acquisition level of electric energy information and the accuracy and timeliness of the line loss analysis is of great importance to establish power consumption scheme, ensure the safety and stability ofpower grid, improve service capability and meet the diverse needs of customers.Smart grid uses munication, advanced sensor and distributed puting technology to operate and control power system. It cannot only improve the energy structure and utilization efficiency but also improve the economy, security and reliability of power transmission system. Electric energy information acquisition system is the physical basis of constructing smart grid. It uses advanced sensor, munication, automatic control and other technologies to acquire and manage data, analyze power quality and line loss statistical data. It can timely acquire electric energy information, find abnormal power consumption, monitor and control electricity load. It can provide technical basis for achieving step tariff, prepaid fees and other marketing service strategies.II. THE CONSTRUCTION MODE OF ELECTRIC ENERGY INFORMATION ACQUISITION SYSTEMThe electric energy information acquisition system is posed by main station, munication channel and acquisition devices.A. Main StationMain station is posed by database server, disk array, application server, frontend server, interface server, workstation, GPS clock, firewall and other related network equipments. It is used to plete business application, data acquisition, control, frontend munication dispatch, database management and other functions.B. Communication ChannelCommunication channel includes fiber private network, GPRS/CDMA wireless public network, 230MHz wireless private network and so on. It is used to transfer data from acquisition devices to main station.C. Acquisition DevicesAcquisition devices include acquisition terminal for special transformer, concentrator, collector, smart meter and so on. They are installed to collect and provide initial power consumption information of the whole system.III. THE APPLICATION SCHEME OF ELECTRIC ENERGY INFORMATION ACQUISITION SYSTEMThe electric energy information acquisition system can acquire all the power users’ electric energy information. There are many power users in China and their electrical environments are different. So they use different types of remote munication channels and acquisition terminals. According to the different characteristics of power users, the electric energy information acquisition system uses different technology scheme to collect and monitor power consumption information of all the power users.A. The largescale private transformer userThe largescale private transformer user installs acquisition terminal with load management function, which can timely acquire the output pulse by 485 bus, obtain and store measurement data and information of smart meter. It can plete load control function by monitoring the switch of power user, transfer power consumption information to main station by remote munication channel and provide local information service for power user. The data transmission channel from acquisition terminal to main station can be selected from fiber private network, GPRS/CDMA wireless public network, 230MHz wireless private network and so on.B. The small and medium scale private transformer userThe small and medium scale user installs acquisition terminal for private transformer, which can municate with smart meter by 485 bus, obtain and store measurement data and information of smart meter. It can plete prepaid control and management by monitoring the switch of power user, transfer power consumption information to main station by remote munication channel, receive and perform the management of main station. The data transmission channel from acquisition terminal to main station can be selected from fiber private network, GPRS/CDMA wireless public network.C. The lowvoltage single or three phase industrial or mercial userThe technology scheme can plete remote meter reading, timely acquire power consumption information and analyze abnormal data. Under the supervision of main station, it can achieve prepaid management function by directly controlling smart meter.D. The residential user and public power distribution transformerThere are a huge number of urban and rural users in China and the electric energy information of a single user is little. The data acquisition network is posed by concentrator, collector, smart meter and data transmission channel. It is used to plete remote meter reading and power consumption supervision. The concentrator transmits electric energy information to main station by fiber private network or GPRS/CDMA wireless public network and plete prepaid management. Each public power distribution transformer is an acquisition unit for achieving meter reading of residential customers. The concentrator acquires all the data of smart meter by local munication channel. There are two local data acquisition methods described as fol