Application of gray-fuzzy comprehensive evaluation method in transformer condition assessment

doi:10.3969/j.issn.1000-1565.2018.02.015

Abstract

Abstract: As the indicators of transformer condition are fuzzy and gray, we propose an assessment method comprehensively based on gray-fuzzy theory. Firstly, the transformer condition assessment indicators system is established. Then, the weight set is made up of fuzzy part and gray part. Its fuzzy part is calculated based on the fuzzy analytic hierarchy process, its gray part is calculated based on the redundancy degree of information and the experiences of experts. Finally, the subordinating degree function is used to describe the relationship between the data and different levels, the incredibility of fuzzy relation of data is described by the gray. The gray fuzzy judgement matrix is established and the transformer condition is assessed. The example shows that the method can assess the transformer condition effectively and the comparison with other evaluation methods proves that this method is more reasonable and effective.

Key words: transformer, gray-fuzzy theory, fuzzy analytic hierarchy process, condition assessment

CLC Number:

TM411+.2

LI Sen,ZHANG Shiqi,HU Shunbin. Application of gray-fuzzy comprehensive evaluation method in transformer condition assessment[J]. Journal of Hebei University (Natural Science Edition), 2018, 38(2): 217-224.

References

[1] 王福忠,王海领.基于模糊综合评判的220 kV变压器状态评估策略[J].河南理工大学学报(自然科版),2014,33(3):349-353.DOI:10.16186/j.cnki.1673-9787.2014.03.026. WANG F Z,WANG H L.220 kV transformer condition assessment strategy based on fuzzy theory[J].Journal of Henan polytechnic University(Natural science),2014,33(3):349-353.DOI:10.16186/j.cnki.1673-9787.2014.03.026.
[2] 张柯斐,郭江,肖志怀.模糊综合评价和改进证据理论相融合的变压器状态评价方法研究[J].武汉大学学报,2016,49(2):279-284.DOI:10.14188/j.1671-8844.2016-02-021. ZHANG K F,GUO J,XIAO Z H.Research on state evaluation method of transformer based on fusion of fuzzy comprehensive evaluation and Improve D-S evidence theory[J]. Engineering Journal of Wuhan University,2016,49(2):279-284.DOI:10.14188/j.1671-8844.2016-02-021.
[3] 李磊,熊小伏,沈智健.基于变权重的变压器状态模糊综合评价方法[J].高压电器,2014,50(7):100-105.DOI:10.13296/j.1001-1609.hva.2014.07.018. LI L,XIONG X F,SHEN Z J.Fuzz synthetic evaluation of transformer condition with variable weight value[J].High Voltage Apparatus,2014,50(7):100-105.DOI:10.13296/j.1001-1609.hva.2014.07.018.
[4] 李东升.基于改进模糊综合评判的变压器状态综合研究[J].中国电业,2013,(7):67-71.DOI:1002-1140(2013)07-0067-05. LI D S.Research on transformer condition evaluation based on improved fuzzy compreh-ensive evaluation[J].China Electric Power,2013,(7):67-71.DOI:1002-1140(2013)07-0067-05.
[5] 郭少飞,徐玉琴,苑立国,等.基于模糊综合评判和支持向量回归的变压器状态评估方法[J].电力科学与工程,2012,28(9):5-9. GUO S F,XU Y Q,YUAN L G,et al.Transformer condition assessment method based on fuzzy comprehensive evaluation and support vector machine Regression[J].Electric Power Science and Engineering,2012,28(9):5-9.
[6] 孙莹,于琳,李可军,等.配电变压器更换优先级模型[J].高电压技术,2017,43(7):2371-2377.DOI:10.13336/J.1003-6520.hve.201700328041. SUN Y,YU L,LI K J,et al.Replacement priority assessment model of distribution transformer[J].High Voltage Engineering,2017,43(7):2371-2377.DOI:10.13336/ J.1003-6520.hve.201700328041.
[7] DL/596—1996《电力设备预防性试验规程》[S].北京:中国电力出版社,1996. DL/596—1996 Preventive test code for electric power equipment[S].Beijing:China Electric Power Press,1996.
[8] Q/CSG 11001—2010 110 kV~500 kV 油浸式电力变压器(电抗器)状态评价导则[S].北京:中国电力出版社,2010. Q/CSG 11001—2010 110 kV~500 kV Guide for condition evaluation of oil-immersed power transformerr(reactors)[S]. Beijing:China Electric Power Press,2010.
[9] 骆思佳.电力变压器运行状态分级评估模型的研究[D].重庆:重庆大学,2008. LUO S J.Study on grading assessment model for power transformer operation condition[D].Chongqing:Chongqing University,2008.
[10] 施泉生,牛沁.基于灰色模糊综合评判的10 kV配电网安全风险评估[J].上海电力学院学报,2016,32(1)46-50.DOI:10.3969/j.issn.1006-4729.2016.01.011. SHI Q S,NIU Q.Security risk assessment for 10 kV distribution network based on gray fuzzy comprehensive fuzzy comprehensive evaluation[J].Journal of Shanghai University of Electric Power,2016,32(1):46-50.DOI:10.3969/j.issn.1006-4729.2016.01.011.
[11] 张媛,熊小伏,周家启,等.基于灰色模糊综合评判的断路器维修排序方法[J].电网技术,2008,32(8):21-24.DOI:1000-3673(2008)08-0021-04. ZHANG Y,XIONG X F,ZHOU J Q,et al.Research on sequence of maintenance of circuit breakers based on grey fuzzy comprehensive evaluation[J].Power system technology,2008,32(8):21-24.DOI:1000-3673(2008)08-0021-04.
[12] 国连玉,李可军,梁永亮,等.基于灰色模糊综合评判的高压断路器状态评估[J].电力自动化备,2014,34((11):161-167. GUO L Y,LI K J,LIANG Y L,et al.HV circuit breaker state assessment based on gray-fuzzy comprehensive evaluation[J].Electric Power Automation Equipment,2014,34(11):161-167.