Current-Temperature Model of ACCC Conductors Based on PSO Identification Method

doi:10.11985/2017.05.006

Abstract

Abstract:

The current-temperature model of overhead conductors has used as the theoretical foundation of various areas, such as dynamic capacity-increasing decision, safe operation monitoring and ampacity evaluation. However, ACCC conductor is different from traditional overhead conductors on material, construction and operating temperature. Consequently, the current model cannot be directly applied to ACCC conductor, which has limited the development of dynamic capacity-increasing and the promotion of transmission capacity for ACCC conductor. This paper proposed the current-temperature model for ACCC conductor considering thermal equilibrium principle and thermoelectricity analogy theory. And then PSO identification method was used to identify the model parameters. Finally, a temperature rise experiment platform for current-carrying ACCC conductor was established to measure and simulate the dynamic thermal process of ACCC conductor within natural convection condition. The result shows that the model parameters can be obtained effectively by PSO identification method, and the model is high in precision while calculating the temperature rising process for ACCC conductor.

Key words: ACCC conductors, current-temperature model, identification method

CLC Number:

TM751

Xuan Tong,Zhanfeng Ying,Xudong Zhang. Current-Temperature Model of ACCC Conductors Based on PSO Identification Method[J]. Journal of Electrical Engineering, 2017, 12(5): 35-40.

Figures/Tables 10

Fig.1

Fig.2

Fig.3

Tab.1

Tab.2

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

References 20

[1]	黄新波, 孙钦东, 张冠军, 等. 输电线路实时增容技术的理论计算与应用研究[J]. 高电压技术, 2008,34(6):1138-1144.
	Huang Xinbo, Sun Qindong, Zhang Guanjun, et al. Theoretical calculation and capacity-increase application study on real-time of transmission lines[J]. High Voltage Engineering, 2008,34(6):1138-1144.
[2]	张启东, 钱之银. 输电线路实时动态增容的可行性研究[J]. 电网技术, 2005,29(19):18-21.
	Zhang Qidong, Qian Zhiyin. Study on real-time dynamic capacity-increase of transmission line[J]. Power System Technology, 2005,29(19):18-21.
[3]	Cecchi V, Knudson M, Miu K. System impacts of temperature-dependent transmission line models[J]. IEEE Transactions on Power Delivery, 2014,30(28):2300-2308.
[4]	IEC 61597-1995, Overhead electrical conductors-calculation methods for stranded bare conductors[S]. International Electrotechnical Commission, 1995.
[5]	IEEE Std 738-2006, IEEE Standard for calculating the current-temperature of bare overhead conductors[S]. New York, Institute of Electrical and Electronics Engineers, 2006.
[6]	韩晓燕, 黄新波, 赵小惠, 等. 输电线路摩尔根载流量简化公式的初步研究[J]. 电力系统及其自动化学报, 2009,21(5):92-96.
	Han Xiaoyan, Huang Xinbo, Zhao Xiaohui, et al. Preliminary study on morgan transmission capacity simplified formula of transmission lines[J]. Proceedings of the CSU-EPSA, 2009,21(5):92-96.
[7]	Black W Z, Collins S S. Theoretical model for temperature gradients within bare overhead conductors[J]. IEEE Transactions on Power Delivery, 1988,3(2):707-715.
[8]	Morgan V T. The radial temperature distribution and effective radial thermal conductivity in bare solid and stranded conductors[J]. IEEE Transactions on Power Delivery, 1990,5(3):1443-1452.
[9]	Minambres J F, Alvarez-Isasi R, Zorrozua M A, et al. Radial temperature distribution in ACSR conductors applying finite elements[J]. IEEE Transactions on Power Delivery, 1999,14(2):472-480.
[10]	刘刚, 阮班义, 张鸣. 架空导线动态增容的热路法暂态模型[J]. 电力系统自动化, 2012,36(16):58-62,123.
	Liu Gang, Ruan Banyi, Zhang Ming. A transient model for overhead transmission line dynamic rating based on thermal circuit method[J]. Automation of Electric Power Systems, 2012,36(16):58-62, 123.
[11]	刘刚, 阮班义, 林杰, 等. 架空导线动态增容的热路法稳态模型[J]. 高电压技术, 2013,39(5):1107-1113.
	Liu Gang, Ruan Banyil, Lin Jie, et al. Steady-state model of thermal circuit method for dynamie overhead lines rating[J]. High Voltage Engineering, 2013,39(5):1107-1113.
[12]	Boguslaw Wiecek, Gilbert De Mey, Vasilis Chatziathanasiou, et al. Harmonic analysis of dynamic thermal problems in high voltage overhead transmission lines and buried cables[J]. Electrical Power and Energy Systems, 2014,58(6):199-205.
[13]	Alawar A, Bosze E J, Nutt S R. A composite core conductor for low sag at high temperatures[J]. IEEE Transactions on Power Delivery, 2005,20(3):2193-2199.
[14]	Burks B. Failure prediction analysis of an ACCC conductor subjected to thermal and mechanical stresses[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2010,17(2):588-596.
[15]	何州文, 陈新, 王秋玲, 等. 国内碳纤维复合芯导线的研究和应用综述[J]. 电力建设, 2010,31(4):90-93.
	He Zhouwen, Chen Xin, Wang Qiuling, et al. Research and application overview of ACCC conductor in china[J]. Electric Power Construction, 2010,31(4):90-93.
[16]	Zamora I, Mazón A J, Eguía P, et al. High-temperature conductors: a solution in the uprating of overhead transmission lines[M]. Power Tech, IEEE Porto, 2001(4).
[17]	张荐, 焦重庆. 空间交叉跨越导线间互电感的计算与分析[J]. 电气应用, 2016,35(14):28-33.
[18]	Deve H E, Clark R, Stovall J, et al. Field testing of ACCR conductor[J]. Electric Power Construction, 2007(4):24.
[19]	陈原, 宋福如, 周国华, 等. 碳纤维复合芯导线及应用[M]. 北京: 中国电力出版社, 2014.
[20]	应展烽, 徐捷, 张旭东, 等. 基于脉动参数热路模型的架空线路动态增容风险评估[J]. 电力系统自动化, 2015,39(23):89-94.
	Ying Zhanfeng, Xu Jie, Zhang Xudong, et al. Risk assessment of dynamic overhead lines rating based on thermal circuit model considering pulsating characteristic of parameters[J]. Automation of Electric Power System, 2015,39(23):89-94.

参数名	参数值
规格	ACCC-240/35
导线长度/m	5
层数	2
铝股数	25
芯线直径/mm	7.5
线径/mm	21.7
20℃直流电阻/(Ω·km^-1)	0.1209
允许连续使用温度/℃	160

辨识参数	辨识结果
热容C/(J·K^-1·m^-1)	4087.7
交流电阻温度系数α	0.0030
20℃时的导线交流电阻R_ref/(Ω·km^-1)	0.1559
环境热阻系数a	1.6024
环境热阻系数b	0.1782