Based On-line Near Real-time Decision-making To Regional Stability Control System For The Development Of The Neutron Station Device Module

The ability of power network maintaining its power supply reliability and quality is restricted by power network structure, line and load characteristics, generator drive device characteristics and relay protection mechanism. The research of power system control policy and theory in different state is always cared by researchers and developers.With the development of power system to large capability, super-high voltage, long distance and networking between areas, the problem of the stability of power system becomes more and more complex. So serial variational measures on power system security and stability control are needed in theory and practice. On-line pre-realtime decision-making is greatly potential to resolve power networks stability control and has been a key problem tackled by national and international researchers and developers.The following works have been done about power system stability control in this thesis:1) In theory, this thesis first introduces the running condition and the actuality of stability control of power system in China. After a careful discussion of several typical equipments and decision-making, the paper analyses a design of regional stability control system based on-line pre-realtime decision-making, and tests its reliability and accuracy. The feasibility and superiority of this project is proved. It also analyses the potential problems in the future project and gives the countermeasures.2) The realization of power system security and stability control is mainly developing new-style stability control equipment. The design of sub-control-station is modularization. The M16C microprocessor is the processor. The sub-control-station contains modules of communication, generator, line, switch signal input, switch signal output, master and decision, etc. The modules communicate via double CAN. The author takes charge of R&D of generator and communication modules.3) The content of generator module design includes the design factor, design outline, software design and experimentation. The generator module must complete the analog signals calculating, and make an order for shutting off connected generators in the condition of generators settings, concatenated logics and switch signal input, then communicate with the decision module.4) The function of the communication module transmits and transforms signals between the different substations or plants, and keeps Signals' channel unblocked. In this module, communication between stations or plants is achieved byprotecting the fiber channel synchronously and transforming signals between on the fiber and on can bus, based on M16C microcomputer.In a word, this thesis not only expounds the whole structure of stability control of power system based on the theory of control decisions, but also designs software and hardware of sub-control-station, which are different from others. There are several advantages as listed below:1) Distributed hardware architecture Function modularization Realization of communication between modules by high-speed network communication technology (CAN) (interconnecting 256 modules or mainframes) Flexible, convenient, reliable expansibility of hardware and decreasing system risk. Any broken cell only affects local cell.2)Separated realtime information network(control networks) and management networks(supervise networks)...