The Development And Application Of Simulation System Of Operation Ticket In Substations

Switch operation of power system, which is the main method of adjusting andchanging operation of grid, is of great importance in generation and operation of power.To ensure the correctness of switch operation, operation command tickets are neededbefore conducting any switch operation. Substation operation command tickets, aswell as power network dispatching command tickets, is an important link in themanagement system to secure safe production of power industry.To improve the technique level and comprehensive quality of operators ofsystem, power department has attached great importance to training of personnel.Taking advantage of Semi-real simulation environment of simulation substation in thetraining, professional knowledge level of operators can be improved greatly in a shorttime, meanwhile field operation experiences will be acquired. Substation operationcommand tickets simulation-system is an important branch of simulation technique ofsubstation, and the research and development of it is significant in improving theefficiency of training.The paper firstly discussed the search algorithm of inference engine and therealization of operation command ticket simulation system restrained digraph. Then,according to that, the paper elaborated software development technology, realizationof the system, and information interactive technology of the evaluation system,etc.Based on field operation of command tickets and problems of its currentsimulation system, the paper put forward an ideology of the construction andinference of expert system rule base inference and structure based on image modeling.On the foundation of operation flow digraph, the digraph expert rule base of operationcommand ticket simulation system was set up. As a rule base built on the digraph, theconception of minimum graph has enabled the minimized route search of operationcommand ticket can be realized by the concept of minimum diagram, which solved theproblem of dimension increase by exponential order with the increase of ticket typesin the inference engine,as well as the problem of portability of traditional ticket.Modularization packaging is realized with the whole ticket simulation systemachieving imaging modeling based on digraph rule base. Users only need to put rulebase block on route expand or simply get to know the location of rule in the substationprimary topological graph to expand the rule base. The whole reasoning mechanism and search mechanism are all conducted automatically based on digraph, expansionand extending of the operation command ticket simulation system is quite convenient.The ticket simulation system developed can write tickets of a wide field, and theMan-Machine interface is simple, and the operation is convenient. The system now isput into practical training and has gained good result.