毕业设计（论文） 外文文献翻译
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金陵科技学院学士学位论文 外文参考资料及译文
毕业设计（论文）外文参考
资料及译文
译文题目：
Kangle com munity Power Of Distributio n in Yandu Of yan che
ng 盐城市盐都区康乐小区配电设计
Power Of com mun ity Distributi on To Desig n
ABSTRACT: The basic fun ctio n of the electric power system is to tran sport the electric power towards customers. The IOkV electric distribution net is a key point that connects the power supply with the electricity using on the in dustry, bus in ess and daily-life. For the electric power, allcostumers expect to pay the lowest price for the highest reliability, but don't con sider that it's self-c on tradictory in the co-existe nee of economy and reliable.To improve the reliability of
the
power supply n etwork, we must in crease the in vestme nt cost of the n etwork con structi on But, if the cost that improve the reliability of the n etwork con struct ion, but the in vestme nt on this ki nd of con struct ion would be worthless if the reduci ng loss is on the power-off is less tha n the in creas ing investment on improving the reliability .Thus we find out a balance point to make the most econo mic,betwee n the in vestme nt and the loss by calculati ng the in vestme nt on power net and the loss brought from power-off.
KEYWORDS : power supply and distribution, power distribution compensation, Ioad distribution
reliability ， reactive
The revoluti on of electric power system has brought a new big round con struct ion, which is pushing the greater revolution of electric power technique along with the application of new tech nique and adva need equipme nt. Especially, the comb in atio n of the in formati on tech nique and electric power technique, to great ex- tent, has improved reliability on electric quality and electric supply. The tech ni cal developme nt decreases the cost on electric con struct ion and drives innovation of electric
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金陵科技学院学士学位论文 外文参考资料及译文
network. 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 communication 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 single-phase and works out equation and several parameter s U& , s I& and e I& table on problem . It brings out optimized isolation and resume plan, realizes auto isolation and network reconstruction, reduces the power off range and time and improves the reliability of electric power supply through problem selfdiagnoses and self-analysis. It also introduces software flow and use for problem judgement and sets a model on network reconstruction and computer flow.
Thirdly, electricity system state is estimated to be one of the key techniques in DA realization. The dissertation recommends 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 network(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 non-power compensation and non-continuity on compensation, 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 to be practical. Meanwhile, it analyzes and designs the way of non-power need of electric network tre- nds and decreasing line loss combined with DA, which have been tested its objective economic benefit throu- gh counting example.
Sixthly, not only do the dissertation design a way founded on the magrginal electric price fitted to our present national electric power market with regards to future trends of electric power market in
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