Power Flow Calculation in Distribution System Considering Different Load Model

Abstract:

In traditional power flow calculation used constant power load model, it was completely unreasonable to assume that all load nodes in power system can be classified as PQ nodes.In that the result of constant power load model does not accurately reflect the distribution characteristics of network power flow. To put forward power flow calculation considering load models ,such as constant power load ,constant current load and constant resistance load, derives error equations of the node power, calculates element of Jacobian matrix. So, by using MATLAB simulation software ,the program for power flow are presented, which based on the method of different load models, taking 21-node system for example and makes comparative calculations. The research shows that power flow calculation considering different load models can get more reasonable solution.

• Periodical: Advanced Materials Research (Volume 722)
• Pages: 103-106
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.722.103
• Online since: July 2013
• Authors: Tian Shu, Wang Li
• Keywords: Distribution System, Load Model, Power Flow Calculation, Power System

References

[1] WANG Chun, OUYANG Nian-hui(2009).Analysis About the Influence of Load-Voltage Static Characteristic Model to the Power Flow[J]. Journal of NanchangUniversity:Engineering&Technology,31(3):244—247.

[2] ZHU Ling-zhi,ZHOU Shuang-xi(2000).Study on power flow algorithm for voltage analysis[J]..Automation of Electric Power Systems,24(1):l-4.

[3] Hor C L, Crossley P A(2005).Extracting knowledge from substations for decisionsupport[J].IEEE Transactions on Power Delivery,20(2):595—602.

DOI: 10.1109/tpwrd.2004.838515

[4] John C, Thomas W-Optimal(2006)power flow with expected security costs[J].IEEE Transactionson Power Systems,21(2):541—547.

DOI: 10.1109/tpwrs.2006.873114

[5] Dias L G, Hawary M E(1993)OPF incorporating load models maximizing netrevenue[J].IEEE Trans on Power Systems, 8(I):53-59

DOI: 10.1109/59.221248

[6] WU Li, YAO Li-xiao, GU Ting-ting(2011).Radial distribution system voltage stability analysis by different load models based on linear load index [J].Power System Protection and Control , 39(13):8-13.

[7] ZHANG Jian(2007).Power system load model and identification[M]. China Electric Power Press, Beijing.

[8] WANG Xi-fan(2003).Modem power system analysis [M].Science Press, Beijing.