Design And Realization Of Electric Energy Acquisition System

In this paper, design principle and method of energy collection system, and problems about them are studied, and realized by an instance. The purpose of implementing energy collectivity system is automatic and real-time gathering and counting energy data used for sale for each power plant and partial large user. Basing on them computing network loss and balancing real-time power can be done. Main works as following.I. Design principle, method and system function of electric energy collection system studyingWith the stepwise development of forming in electric industry system and police of "power plant and electric network are separated in system, sending power out to electric network based on price competition" being put in practice, the power industry monopolization system will be broken. The trade between generating and providing power will be hold according to market rules. There is special importance on the real-time quality, veracity and reliability of measuring system on pivotal point. Real-time collecting power and energy volume of each pivotal point is the technical foundation of assuring natural bargaining in market.The electric energy collecting system is a complicated system, that involves many techniques. Because of the large separating trait of field data collection, this paper adopts different technique to collect data based on the practical situation of feeding and distribution network. At the transformer substation field bus technique is adopted because each measuring point is comparatively concentrative. At meanwhile, the measuring points at distribution transformer have large separating trait, in this paper, the high capability singlechip is used to design collection equipment. In this way it assures the veracity and reliability of collecting data. About the software design the terminal has the ability on recognizing main station validity, communication function permission can be set on different port to assure security of system equipment and data.In selection of communication mode, after every communication technique trait synthetically compared in this paper, the proper mode is designed according to electric network practical situations. With the development of the fiber communication technique and its ratio of performance to price step by step increasing, the fiber is used for communicating channel at every transformer station. In recent years, services have been provided in GSM, based on plat of GSM hardware, the data transmission technique has been very mature and applied. In this paper GPRS technique is used for distribution transformer, thus it is avoided for power supply department maintaining channel, the channel has the virtue of high reliability, excellent stabilization and low cost.To assure clock accuracy of the whole system, the GPS clock source is designed in this paper and check clock automatically to ensure the same clock in the whole system, thereby, this assures that the system has a time standard and the data validity in the time.The demands of design of the main station are security assurance of data collection, dealing and database, In terms of hardware technique, two high capability computers are adopted and utilized each other shortly. In terms of software technique, it sets different passwords in network operating system, and ensures system's safety and relative independence through route and firewall. It sets different permissions and passwords in database, and ensures that invalid users can't utilize the system. In operating applying software, it is sorted four classes according to different permission setting, they are system administrator, special operator, general user and temporary user. Every user's operating scope and permission can be set solely, the system provides detail logs and operating records. Two single databases are designed in system, and all operations are on one of them to ensure data safety. The crucial original data and history data are termly backuped automatically, at the same time, the system provides manual backup function. All th...