2024年4月7日发(作者：)

Power Of community Distribution To Design

ABSTRACT: The basic function of the electric power system is to transport the

electric power towards customers. The l0kV electric distribution net is a key point

that connects the power supply with the electricity using on the industry, business

and daily-life. For the electric power, allcostumers expect to pay the lowest price

for the highest reliability, but don't consider that it's self-contradictory in the

co-existence of economy and improve the reliability of the power

supply network, we must increase the investment cost of the network construction

But, if the cost that improve the reliability of the network construction, but the

investment on this kind of construction would be worthless if the reducing loss is

on the power-off 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 net and the

loss brought from power-off.

KEYWORDS: power supply and distribution, power distribution reliability，

reactive compensation, 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 combination 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

金陵科技学院学士学位论文 外文参考资料及译文

innovation of electric 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

self- diagnoses 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

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