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1 題目:電網(wǎng)規(guī)劃設(shè)計(jì) 電力 091班 肖苗 20214450142 Power Supply and Distribution System ABSTRACT: The basic function of the electric power system is to transport the electric power towards customers. The l0kV electric distribution is a key point that connects the power supply with the electricity using on the industry, business and dailylife. For the electric power, allcostumers expect to pay the lowest price for the highest reliability, but don39。t consider that it39。s selfcontradictory in the coexistence of economy and improve the reliability of the power supply work, we must increase the investment cost of the work construction But, if the cost that improve the reliability of the work construction, but the investment on this kind of construction would be worthless if the reducing loss is on the poweroff is less than the increasing investment on improving the reliability .Thus we find out a balance point to make the most economic,between the investment and the loss by calculating the investment on power and the loss brought from poweroff. KEYWORDS: power supply and distribution, power distribution reliability , reactive pensation, load distribution The revolution of electric power system has brought a new big round construction,which is pushing the greater revolution of electric power technique along with the application of new technique and advanced equipment. Especially, the bination of the information technique and electric power technique, to great ex tent, has improved reliability on electric quality and electric supply. The technical development decreases the cost on electric construction and drives innovation of electric work. On the basis of national and internatio nal advanced electric knowledge, the dissertation introduces the research hotspot for present electric power sy etem as following. Firstly, This dissertation introduces the building condition of distribution automation(DA), and brings forward two typical construction modes on DA construction, integrative mode and fission mode .It emphasize the DA structure under the condition of the fission mode and presents the system configuration, the main station scheme, the feeder scheme, the optimized munication scheme etc., which is for DA research reference. Secondly, as for the (DA) trouble measurement, position, isolation and resume, This dissertation analyzes the changes of pressure and current for line problem, gets math equation by educing phase short circuit and problem position under the condition of singlephase and works out equation and several parameter s Uamp。 , s Iamp。 and e Iamp。 table on problem . It brings out 2 optimized isolation and resume plan, realizes auto isolation and work reconstruction, reduces the power off range and time and improves the reliability of electric power supply through problem self diagnoses and selfanalysis. It also introduces software flow and use for problem judgement and sets a model on work reconstruction and puter flow. Thirdly, electricity system state is estimated to be one of the key te