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Distribution Network Planning Based on Optimization Strategy

Author: ZengLi
Tutor: JingChaoXia
School: South China University of Technology
Course: Proceedings of the
Keywords: Distribution system planning Optimization strategy Advance AHP Switching
CLC: TM715
Type: Master's thesis
Year: 2011
Downloads: 63
Quote: 0
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Abstract


With the rapid development of the national economy, the power industry is also developing rapidly. Currently, large power plant is usually far from the load centers, energy generated by the plants is generally transmitted to the load center by the high-voltage transmission network, and then distributed to users of different voltage levels by the distribution network. Distribution network planning is an important key in the reconstruction and construction of power grids, planning scenario selection is still a more in-depth research subject in distribution network planning process.Switching station is used in the power reception and distribution of 10kV feeders. Sitching station may solve the problems of the insufficient number of distribution switchgear and the restriction of electric outgoing line corridor. However switching station will increase the investment. How to obtain the balance of inputs and benefits remains a vague issue. This paper propose the Integrated Decision Model for Switching Station Construction. The model is based on the load forecasting and gives analysis on both economy and enforceability, and also think of the time value of investment.Distribution network planning is usually held each a period of 3-5 years, and is revised annually. The ultimate aim of distribution network planning is to give appropriate solutions with the status of distribution network and the development of load in the region, and then carry it out within the reconstruction year. In view of the limited reconstruction funds, distribution system planning implementation has to be prioritized. And it is a optimization strategy.In this paper, substandard indexes functions are established for 7 important indexes in medium voltage distribution feeder. Expert rating system is used to develop the index weights. And the advanced AHP is used to correct the weights. The reconstruction urgency degree calculation model is established, under certain funds condition, make the largest urgent degree change before and after reconstruction as the objective function, and take into account the related constraints, then determine the optimal set of the reconstruction programs. In the optimization process.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Power system planning
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