| With the development of the national economic and the rise of the people living level in the aspect of material and culture, the need of the electric power become more and more important as the electric power system is playing an important role in the China national economic system. It promote the electric power industry to develop rapidly, enlarge the scale and develop the automation of the electric power system. At the same time the sections depending on the electric power and electricity quality appear more and more nervous even the occurrence of the moment when breaking off of the power. The management contents of the distribution power network are very complicated with the complication of the connecting line method, the wide circuit distribution, the big variation, and so many equipments on-line. The diagnosis, separation of the faults and the comeback of the power system are the important functions in the DMS. It demands to decrease of the controlling operation time, decrease the tasks of the main station, increase the main indexes of the automation system, lessen the time and scales when power cutting and promote the economy of power supply. We design a FDISR system using application heredity arithmetic to resolve the troubles above in the distribution power network. FDISR is a most non-linearity favorable problem that has more targets, more period of time, more combination and more restriction when describing in math language. The value of it is a series of combination of the switch actions. Distribution power network FDISR system is composed of code, evaluation functions and heredity operations. Evaluation functions is the evidence of evaluation the value of the performance, the good value can inherit the choiceness performance to the next generation. From the choiceness point of view heredity arithmetic can resolve the diagnosis of the faults and output the most excellent diagnosis results in the whole part or local part even under the circumstance when duplicate faults appears. But how to construct reasonable distribution power network faults diagnosis math models is a difficult problem now in using heredity arithmetic. To confirm the most choiceness cross, variation operators and the corresponding parameters is in the next step research work. Distribution power network automation is different to supply power system that it must communicate with a large amount numbers of terminals far away and deal with lots of information. Thus it is necessary to reduce the channel numbers and distribute the capacity of high speed channels. Furthermore, there is so many inspection systems and the circumstance varies in the city zone, the distribution power network automation system function would not be accomplished wholly in main station to avoid the decrease of the burden and the working efficiency of the main station. To promote the whole system indexes of the distribution power network automation system and reduce the power cutting time of the system we carry on the tasks by step here. According to the long-term development use and the rapid demand in the automation when faults diagnosis, a distribution power automation seed station is constructed in every transformer substation.In this article the main station is the top layer to take charge of the control and the inspection of the current distribution power system. The seed stations are the important layers in the automation system, they can fulfill the faults diagnosis, separation and the comeback of the power which appointed by the main station. The main station confirm the faults and the resolve schemes, then deliver them to the seed stations and the seed stations correlative them thus they can carry on the separation schemes. Recently there is some trends to combination some kinds of arithmetic to help to overcome the shortage of single arithmetic, get a better comeback strategy and lessen the time of forming schemes. Under the circumstance of the experiences and research works inside and outside the country, we combine heredity arithmetic and faintness control to reduce the switch times and damage of the network, develop a software with SQL Server 2000 by Visual C++ and put into practice DMS use that can diagnose, separate the faults and comeback the electric power. The system apply for the 10KV distribution electric power tree shape is as follows: 1. The definition tree can show the link connection of the node, distinguish from the structural change of the network topology with depth priority arithmetic and confirm the faults zone with failure electric current search way. 2. According to the faults recovery status with power supply recovery by step, the seed stations can confirm the separation and power recovery schemes if they can not fulfill the restriction qualifications; they won't handle them if they can meet the qualifications. The main station will diagnose the problems according to the information in the whole net and confirm the resolve ways to the seed stations and the seed stationscorrelative, the seed stations will carry on the separation ways confirmed by main station next. 3.Here we use heredity arithmetic to select a most proper power recovery scheme, aim at net switch status and code with 0,1 code. At the same time by searching for the feasible value, colony scale and proving heredity operators we increase the convergence speed and avoid the juvenility convergence... |
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