Evaluation of Capacitive Current Compensation Strategies to Current Differential Protection for Long Distance Transmission Lines

In UHV and EHV, distributive capacitive current to current differential protection has serious problem. Nowadays, to deal with the problem of distributed capacitive current a stimulating modern technology is being used in current differential protection with high operating threshold. Many schemes have been used into current differential protection for capacitive current compensation, which was based on shunt reactor, phasor compensation algorithm, Bergeron method. Those techniques were also reducing operating speed and sensitivity of current differential protection. To solve the problem of distributed capacitive current of the line, novel principle of current differential protection is described in this article. Current calculated from set point to both the ends give rise to a differential criterion. Differential protection is launched under the phenomenon of low sampling frequency to improve the expediency of the criterion. The calculation of set point distributed current is achieved at low sampling frequency by adding an interpolation point at each sampling interval. The point is set in the middle of the line and the calculation for magnitude of the current is done with half data window absolute value integrals, for improved the operating speed of the current differential protection.    

    M. Arshad Shehzad Hassan, Xi’an Jiaotong University, Xi’an, China, Email: arxhad@yahoo.com

   Guobing Song, Xi’an Jiaotong University, Xi’an, China, Email: song.gb@mail.xjtu.edu.cn

   Chenqing Wang, Xi’an Jiaotong University, Xi’an, China, Email: wcqmorning@gmail.com

   Xingfu Jin, Xi’an Jiaotong University, Xi’an, China, Email: xingfujin@stu.xjtu.edu.cn

   Chengcheng Yang, Xi’an Jiaotong University, Xi’an, China, Email: chengchengyang10@126.com

   Sohaib Tahir, Xi’an Jiaotong University, Xi’an, China, Email: sohaibchauhdary@gmail.com

M. Arshad Shehzad Hassan, Guobing Song, Chenqing Wang, Xingfu Jin, Chengcheng Yang, Sohaib Tahir,"Evaluation of Capacitive Current Compensation Strategies to Current Differential Protection for Long Distance Transmission Lines" International Journal of Engineering Works, Vol. 2, Issue 5, PP. 66-68, May 2015. 

[1]     McMurdo J N, Weller G C. Applications of digital differential protection[C]//Developments in Power System Protection, 1993., Fifth International Conference on. IET, 1993: 115-118.

[2]     Ito H, Shuto I, Ayakawa H, et al. Development of an improved multifunction high speed operating current differential relay for transmission line protection[C]//Developments in Power System Protection, 2001, Seventh International Conference on (IEE). IET, 2001: 511-514.  

[3]     Bi T S, Yu Y L, Huang S F, et al. An accurate compensation method of distributed capacitance current in differential protection of UHV transmission line[C]//Power Engineering Society General Meeting, 2005. IEEE. IEEE, 2005: 770-774.

[4]     Yan L I, De_shu C, Zhang Z, et al. The emulation analysis for the influence of capacitance current of UHV transmission line on differential current protection and compensating countermeasure [J]. Relay, 2001, 29(6): 6-9.

[5]     Miao S, Liu P, Lin X. An adaptive operating characteristic to improve the operation stability of percentage differential protection[J]. Power Delivery, IEEE Transactions on, 2010, 25(3): 1410-1417.  

[6]     Xinzhou D, Bin S, Zhiqian B, et al. Study of special problems on protective relaying of UHV transmission line[J]. Automation of Electric Power Systems, 2004, 28(22): 19-22.

[7]     Yekai W, Dongxia Z. The Influence of Capacitance Current to differential Protection and Its Compensation Scheme [J]. Relay, 1997, 25(4): 4-8.  

[8]     Wen M H, Chen D S, Yin X G. Study of current phasor differential protection for long UHV transmission line[J]. Automation of Electric Power Systems, 2000, 24(20): 37-40.

[9]     Jiale, Suonan, Zhang Yining, Qi Jun, and Jiao Zaibin. "Current Differential Protection Based on Time-Domain Algorithm of Capacitive Current Compensating." JOURNAL-XIAN JIAOTONG UNIVERSITY 39, no. 12 (2005): 1370.

[10]  Jiali H, Zheng G. Novel principle of pilot differential relay protection of transmission lines[C]//The 4th International Conference on Power Transmission & Distribution Technology. 2003: 576-581.

[11]  Song G, Suonan J, Xu Q, et al. Parallel transmission lines fault location algorithm based on differential component net[J]. Power Delivery, IEEE Transactions on, 2005, 20(4): 2396-2406.  

[12]  Jiale S, Yining Z, Jun Q, et al. Study of current differential protection using time-domain capacitive current compensating algorithm on-model[J]. Proc. CSEE, 2006, 26(5): 12-18.

[13]  Suonan J, Deng X, Liu K. Transmission line pilot protection principle based on integrated impedance [J]. Generation, Transmission & Distribution, IET, 2011, 5(10): 1003-1010.

[14]  Yang J C, Yin X G, Chen D S, et al. The study of sampled value differential protection[C]//Transmission and Distribution Conference and Exposition, 2003 IEEE PES. IEEE, 2003, 1: 256-261.

[15]  YANG, J. C., YIN, X. G., CHEN, D. S., ZHANG, Z., & HU, Y. F. (2003). Study on the Operating Characteristic of Sampled Value Differential Protection [J]. Proceedings of the Csee, 9, 014.

[16]  Dommel, H. W., and J. M. Michels. "High-speed relaying using traveling wave transient analysis." In IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, vol. 97, no. 4, pp. 1011-1011. 345 E 47TH ST, NEW YORK, NY 10017-2394: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1978.

[17]   M. Arshad Shehzad Hassan, Guobing Song, Xiaoning Kang, Zaibin Jiao, Chenqing Wang, Sohaib Tahir, "Current Differential Protection for Distributed Transmission Lines using Low Sampling Frequency" International Journal of Engineering Works, Vol. 2, Issue 3, PP. 42-47, March, 2015.

[18]  M. Arshad Shehzad Hassan, Guobing Song, Xiaoning Kang, Zaibin Jiao, Sohaib Tahir, Nouman Faiz, "A Novel Principle of Current Differential Protection for UHV and EHV Transmission Lines Based on Distributed Parameters Line Model"International Journal of Engineering Works, Vol. 2, Issue 4, PP. 48-53, April, 2015.