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Calculation and Analysis in Power Network Line Loss Based on Parameter Estimation

Author: ZhaoYong
Tutor: ChangXianRong
School: North China Electric Power University (Hebei)
Course: Proceedings of the
Keywords: Loss calculation
CLC: TM744
Type: Master's thesis
Year: 2009
Downloads: 76
Quote: 1
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Abstract


Combining with the actual situation a power grid, the theoretical calculation of line loss on behalf of the day. Take the load on the hour and the measured data, collecting power grid structure parameters. The first power to loss the approximate calculation method of the power grid and the preliminary theory approximation. To 35 kv voltage level main transmission using trend method, the equivalent resistance method of distribution network to approximate calculation, the initial value. To 35 kv power transmission network, the introduction of state estimation and the fast PQ decomposition state estimation algorithm based on original data processing. For distribution network, due to the lack of relative measured data is adopted in this paper, data interpolation and data least squares fitting method, the suspicious data and bad data first data interpolation analysis, if cannot reach requirements, the calculation and data again the least squares fitting. The reassessment, try to correction, and the related data identification value to substitution theoretical line loss calculation process, and combined with this topic selected practical grid do actual example validation, this method is effective. Finally gives the parameter identification based on the theory of network loss calculation program design overall thought, introduced the line loss calculation and analysis software system design method.

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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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