International Transaction of Electrical and Computer Engineers System
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International Transaction of Electrical and Computer Engineers System. 2022, 7(1), 1-10
DOI: 10.12691/iteces-7-1-1
Open AccessArticle

Optimal Location of VSC-HVDC System in Nigerian 330kV Power Network Using a Short Circuit Voltage Violation Index and Line Loss Technique

Felix Kalunta1, and Obiageli Ngwu2

1Fabrication Technology Division, Federal Institute of Industrial Research, Lagos, Nigeria

2Department of Industrial, Manufacturing and Systems Engineering, The University of Texas at Arlington, Texas, USA

Pub. Date: November 10, 2022

Cite this paper:
Felix Kalunta and Obiageli Ngwu. Optimal Location of VSC-HVDC System in Nigerian 330kV Power Network Using a Short Circuit Voltage Violation Index and Line Loss Technique. International Transaction of Electrical and Computer Engineers System. 2022; 7(1):1-10. doi: 10.12691/iteces-7-1-1

Abstract

The capability of a power system to sustain steady and acceptable voltages at all buses after being subjected to disturbance has become a very important issue in any High Voltage Alternating Current (HVAC) transmission system, especially in developing nations like Nigeria. In weak systems, a small disturbance can cause so large deviations in the voltages that the system’s operation is jeopardized. Modern approaches favor the deployment of Voltage Source Converter High Voltage Direct Current (VSC-HVDC) systems into the weak areas of the HVAC network as suitable technologies to address this precarious situation. This paper employs a short circuit voltage violation indicator as an alternative to the Short Circuit Ratio (SCR) in locating the weak areas of the power network, with cognizance that high voltage violations occur at the weak buses. This indicator portrays the propagation of voltage dip from the fault location to the entire network by estimating the root-mean-square voltage deviations of all the buses outside the fault location. This violation index was validated by comparing its magnitude at selected locations with that of SCR. Its application on the existing 39-bus Nigerian power grid revealed that the weak areas are located in the Bauchi zone of the power grid. Every transmission line attached directly to a weak bus was subjected to power flow analysis, and considering that voltage enhancement is associated with a reduction in power loss, the line dissipating the highest loss becomes an option for the location of the HVDC system. All the HVDC options were grouped under different configurations, namely: One HVDC System, Two HVDC Systems, and Three HVDC Systems. The insertion of three HVDC systems along the Kaduna – Gombe – Jos – Makurdi transmission routes appeared as the best option since it produced the least value of voltage violation index and was consequently selected as the optimal location for the HVDC systems in the given network. The impact of the selected HVDC systems on the modified power network shows a remarkable reduction in voltage violation at the weak buses. Modifying the Nigerian electricity grid in this way will minimize voltage collapse during fault conditions, and the quality of power delivery will be significantly improved.

Keywords:
HVDC transmission voltage source converter voltage violation index voltage enhancement

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References:

[1]  Eyenubo O. J. and Oshevire P. (2017). Improvement of Power System Quality Using VSC-Based HVDC Transmission. Nigerian Journal of Technology (NIJOTECH), Vol. 36, No. 3, pp. 889-896.
 
[2]  Barnes M. and Beddard A. (2012). Voltage source converter HVDC links – The state of the art and issues going forward. Deep Wind, 19th – 20th January 2012, Trondheim, Norway. Energy Procedia, vol. 24, Issue 2012, pp. 108-122.
 
[3]  Navpreet T., Tarun M., Amit B., Kotturu J., Bhupinder S., Anant B. and Gurangel S. (2012). Voltage source converters as the building block of HVDC and FACTS technology in power transmission system: A simulation based approach. Journal of Advances in Applied Science Research, Vol. 3, Issue 5, pp. 3263-3278.
 
[4]  Guanglu W., Liang J., Zhou X., Yalou L., Egea-Alvarez A., Gen L., Hongying P. and Zhang X. (2017). Analysis and Design of Vector Control for VSC-HVDC Connected to Weak Grids. CSEE Journal of Power and Energy Systems, Vol. 3, No. 2, June 2017, pp. 115-124.
 
[5]  Kalunta F. and Ngwu O. (2021). “Enhancement of Transmission Efficiency and Voltage Profile in the Bauchi Axis of Nigerian Power Grid Using a VSC-HVDC System.” American Journal of Electrical and Electronic Engineering, Vol. 9, No. 1 (2021): 12-20.
 
[6]  Osman M., Segal N., Najafzadeh A. and Harris J. (2018). Short circuit modeling and system strength. North American electric reliability Corporation (NERC) white paper. February 2018.
 
[7]  Ingole D. A. and Gohokar V .N. (2013). Voltage stability improvement in multi-bus system using static synchronous series compensator. Mathematical Problems in Engineering. Vol. 2013, Article ID 235316. Hindawi Publishing Corporation.
 
[8]  Pilotto L. et. al. (2017). Transient AC voltage related phenomena for HVDC schemes connected to weak AC systems. 1st International Conference on Power Engineering, Computing and Control, PECCON-2017, VIT University, Chennai Campus. 2nd – 4th March 2017.
 
[9]  Abbas Z. and Tuaimah F., “Optimal Location of High Voltage Direct Current (HVDC) Transmission Line using Genetic Algorithm”, 2nd International Scientific Conference of Engineering Sciences (ISCES 2020), IOP Conf. Series: Materials Science and Engineering, February 2021, 1076 (2021) 012008.
 
[10]  Shiwu L., Wei Y., Xiaomeng A., Jinyu W., Qing L., Yanhong J., Zhang J. and Jingzhe T (2017). An Improved Multi-Infeed Effective Short-Circuit Ratio for AC/DC Power Systems with Massive Shunt Capacitors Installed. Energies Journal, 2017 (10): 396-412.
 
[11]  Lee, D.; Andersson, G. (2016). An Equivalent Single-Infeed Model of Multi-Infeed HVDC Systems for Voltage and Power Stability Analysis. IEEE Trans. on Power Delivery. 2016, 31, 303-312.
 
[12]  Chen, X.W.; Guan, L. “Research on limitation of the multi-infeed short circuit ratio”, In Proceedings of the 2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), Xi’an, China, 25–28 October 2016; pp. 712-715.
 
[13]  Verayiah R., Mohammed A., Shareef H. and Abidin Hj. Z., “Performance comparison of voltage stability indices for weak bus identification in power systems”, 4th International conference on Energy and Environmental Science. IOP conference series Earth and Environment 16 (2013) 012022.
 
[14]  Mushirin I. and Rahman T., “On-line voltage based on contingency ranking using fast voltage stability index”, Proceedings of IEEE/PES Transmission, Distribution and Exhibition Conference, 2002, pp. 1118-1123.
 
[15]  Perez-Londono S., Rogriguez L., Olivar G. (2014). A simplified voltage stability index. IEEE Journal on Electrical Power and Systems, 63, pp 806 – 813.
 
[16]  Julian D., Schulz R., Vu K. and Quaintance W. (2000). Quantifying a proximity to voltage collapse using the voltage instability predictor. IEEE Journal on Electrical Power and Systems, 2, 931 – 932.
 
[17]  Nascimento S. and Gouvea M. Jr., “Voltage stability enhancement in power system with automatic facts device allocation”, 3rd International Conference on Energy and Environment Research, Barcelona, Spain. 7th – 11th September 2016. Pp 60-6.
 
[18]  Danish S. Senjyu T., Sabory N. R., Narayanan K. and Mandal P. (2019). A Recap of Voltage Stability Indices in the Past Three Decades. Energies Journal, Basel, Switzerland. Vol. 12, No. 1544. .
 
[19]  Latorre H. F., Ghandhari M. and Soder L., “Control of a VSC-HVDC Operating in Parallel with AC Transmission Lines”, IEEE PES Transmission and Distribution Conference and Exposition Latin America, Venezuela, 2006, pp. 1-6.
 
[20]  Beddard A. and Barnes M. (2015). Modelling of MMC-HVDC Systems – An Overview. 12th Deep Sea Offshore Wind R & D Conference, EERA Deep Wind' 2015. Energy Procedia 80 (2015): 201-212.
 
[21]  Transmission Company of Nigeria, “Reports on transmission line database, tap ratios of regulating transformers, shunt capacitor data, transmission station load and generator data”, Power Systems Planning, Research and Development unit, Transmission Company of Nigeria (TCN), 2008 to 2010.
 
[22]  Grunwald S. and Oprea L. (2017). Final Report on Transmission Expansion plan: Development of Power System Master Plan for the Transmission Company of Nigeria. Nigerian Electricity and Gas Improvement Project by Fichtner, Stuttgart, Germany.