Study on the Assessment of Line Loss Levels Based on Power Grid Characteristic Differences

doi:10.11930/j.issn.1004-9649.2015.12.103.6

Abstract

Abstract: Because the active power loss level is closely related to the grid type, it is unreasonable to take the actual power loss rate as the criteria to evaluate the level of power loss of different power grids. In order to establish a scientific and rational power loss level evaluation methods, the corresponding index system is constructed by considering the factors of grid structure, parameters of device, grid operation and the structure of power consumption, et al. Mathematical models for all indices are also proposed. Based on the value of each lower level index using AHP analysis, the comprehensive evaluation value of power loss is then obtained. The obtained evaluation values and the actual line loss rates are sorted to objectively assess the regional power grid power loss levels by analyzing the sorting results. Using IEEE-14 test system as an example, the impact of the typical indices on power loss rate are analyzed. Jiangsu power grid is also tested to verify the scientificity and effectiveness of the method. The results show that the proposed typical indices can reflect the effects on regional power loss of different grid characteristics. The evaluation method proposed in this paper provides a quantitative basis to assess the level of power loss, and it can be widely used to assess the status of active power losses for provincial, municipal or prefectural power grids, which will solve the problem of loss reduction space assessment.

Key words: grid characteristic difference, line loss, index system, assessment method

CLC Number:

TM744⁺.1

ZHOU Qian, SUN Zhiming, WEI Peng, AN Haiyun. Study on the Assessment of Line Loss Levels Based on Power Grid Characteristic Differences[J]. Electric Power, 2015, 48(12): 103-109.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2015.12.103.6

https://www.electricpower.com.cn/EN/Y2015/V48/I12/103

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