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The Research on Network Loss Analysis Based on Current Superposition Principle and Its Application

Author: XuZuoZuo
Tutor: LuZhiGang
School: Yanshan University
Course: Proceedings of the
Keywords: Net loss analysis Equivalent grid Current superposition Incremental network loss Node price
CLC: TM744
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 0
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Abstract


Electricity as a special commodity in the transport process caused the loss itself is one of the important characteristics . Reducing the net loss of the power supply system is the main content of the energy efficiency of the power sector , is an important technical and economic indicators for the measurement and assessment of the production and operation of the power supply enterprise , accurate, simple network loss calculation method is conducive to business or sector to develop appropriate indicators and planning . Therefore, network loss analysis is becoming more and more urgent . The impact from the power injection grid loss perspective , in-depth analysis on the grid loss , as follows : First, the current superposition principle to analyze the impact of the change of power injection the grid trend and loss . Any given grid structure , all generators and loads are equivalent to the form of independent current source to determine the power and load current component in the branch , and derive various power supply and the load borne branch power loss , branch loss sharing . On this basis , the establishment of of branch loss with the generator and load power function analytical relations , the slip of the generator and load loss factor , and a slight increase of rate of net loss derived , verify that the method of calculation of the net loss the slight increase of rate superior to transpose Jacobian matrix method for the calculation of net loss rate of a slight increase . Second, will be a slight increase of the net loss rate deduced based on the current superposition method applied to each node tariff calculation , to amend the the node price when considering network loss , then the proposed method and the node price transpose Jacobian matrix method comparative analysis verified a slight increase of the net loss rate calculated based on the current superposition method to more clearly describe the composition of the node price considering the loss . Finally, the given algorithm IEEE9 IEEE39 node system , for example, the analysis by Matlab simulation platform , the simulation results show that the proposed algorithms are correct and effective .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system simulation and calculation > The calculation of the power system
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