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【正文】 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。 1 題目:電網(wǎng)規(guī)劃設(shè)計 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 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 techniques in DA realization. The dissertation remends the resolvent of bad measurement data and structure mistake on the ground of describing state estimate way. It also advances a practical test and judging way on topology mistake in state estimate about bad data test and abnormity in state estimate as well as the problem and effect on bad data from state measure to state estimate .As for real time monitor and control problem, the dissertation introduces a new way to solve them by electricity break and exceptional analysis, and the way has been tested in Weifang DA. Fourthly, about the difficulty for building the model of load forecasting, big parameter scatter limit and something concerned, the dissertation introduces some parameters, eg. weather factor, date type and social environment effect based on analysis of routine load forecasting and means. It presents the way for electricity load forecasting founded on neural work(ANN),which has been tested it’s validity by example and made to be good practical effect. Fifthly, concerning the lack of concordant wave on preve nting concordant wave and nonpower pensation and noncontinuity on pensation, there is a topology structure of PWM main circuit and nonpower theory on active filter the waves technique and builds flat proof on the ground of Saber Designer and proves
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