A new technique for islanding operation of distribution network connected with mini hydro

Abstract

An islanding operation of a distribution network is a topic of interest due to the significant penetration of distributed generation (DG) in a power system network. However, controlling the frequency of an islanded distribution system remains an unresolved issue, especially when the load exceeds the generation. This paper presents a new technique for a successful islanding operation of a distribution network connected with multiple mini hydro based DGs. The proposed technique is based on three main parts. The first part uses an islanding detection technique to detect the islanding event correctly. The second part consists of a power imbalance estimation module (PIEM), which determines the power imbalance between the generation and load demand. The third part consists of a load shedding controller, which receives the power imbalance value and performs load shedding according to load priority. The proposed technique is validated on an 11 kV existing Malaysia distribution network. The simulation results show that the proposed technique is effective in performing a successful islanding operation by shedding a significant number of loads.

Keywords

Islanding operation / Mini hydro / Distributed generation (DG) / Islanding detection / Load shedding

References

[1] Aghamohammadi, M.R., Shahmohammadi, A., 2012. Intentional islanding using a new algorithm based on ant search mechanism. Int. J. Electr. Power Energy Syst., 35(1): 138-147. [

[2] AlRashidi, M.R., AlHajri, M.F., 2011. Optimal planning of multiple distributed generation sources in distribution networks: a new approach. Energy Conv. Manag., 52(11): 3301-3308. [

[3] Anderson, P.M., Mirheydar, M., 1992. An adaptive method for setting underfrequency load shedding relays. IEEE Trans. Power Syst., 7(2): 647-655. [

[4] Basso, T.S., DeBlasio, R., 2004. IEEE 1547 series of standards: interconnection issues. IEEE Trans. Power Electron., 19(5): 1159-1162. [

[5] Biswas, S., Goswami, S.K., Chatterjee, A., 2012. Optimum distributed generation placement with voltage sag effect minimization. Energy Conv. Manag., 53(1): 163-174. [

[6] Carvajal Quintero, S.X., Marin Jimenez, J.D., Arango Aramburo, S., 2012. Feasibility of intentional islanding operation with small hydropower plants. 6th IEEE/PES Transmission and Distribution: Latin America Conf. and Exposition, p.1-6. [

[7] Chen, Y., Xu, Z., Ostergaard, J., 2008. Frequency analysis for planned islanding operation in the Danish distribution system—Bornholm. Proc. 43rd Int. Universities Power Engineering Conf., p.1-5. [

[8] Cheng, S., Chen, M.Y., Wai, R.J., , 2014. Optimal placement of distributed generation units in distribution systems via an enhanced multi-objective particle swarm optimization algorithm. J. Zhejiang Univ.-Sci. C (Comput. & Electron.), 15(4): 300-311. [

[9] Chowdhury, S.P., Chowdhury, S., Crossley, P.A., 2011. UK scenario of islanded operation of active distribution networks with renewable distributed generators. Int. J. Electr. Power Energy Syst., 33(7): 1251-1255. [

[10] Ebrahimi, R., Ehsan, M., Nouri, H., 2013. U-shaped energy loss curves utilization for distributed generation optimization in distribution networks. J. Zhejiang Univ.-Sci. C (Comput. & Electron.), 14(11): 887-898. [

[11] EIA, 2009. Total Capacity of Dispersed and Distributed Generators by Technology Type. Technical Report, U.S. Energy Information Administration. Available from http://www.eia.gov/electricity/ [Accessed on <month>Oct.</month><day>2</day>, 2013].

[12] European Union Commission, 2005. The Support of Electricity from Renewable Energy Sources. European Union Commission Report. Available from http://eur-lex.europa.eu/lexuriserv/lexuriserv.DoUri=com:2005:0627:Fin:En:Pdf [Assessed on <month>Oct.</month><day>1</day>, 2013].

[13] Fuangfoo, P., Lee, W.J., Kuo, M.T., 2007. Impact study on intentional islanding of distributed generation connected to a radial subtransmission system in Thailand’s electric power system. IEEE Trans. Ind. Appl., 43(6): 1491-1498. [

[14] Golkar, M.A., Hajizadeh, A., 2009. Control strategy of hybrid fuel cell/battery distributed generation system for gridconnected operation. J. Zhejiang Univ.-Sci. A, 10(4): 488-496. [

[15] Gooding, P.A., Makram, E., Hadidi, R., 2014. Probability analysis of distributed generation for island scenarios utilizing Carolinas data. Electr. Power Syst. Res., 107: 125-132. [

[16] Hashim, H., Ho, W.S., 2011. Renewable energy policies and initiatives for a sustainable energy future in Malaysia. Renew. Sustain. Energy Rev., 15(9): 4780-4787. [

[17] IEEE, 2000. IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems. IEEE Std 929-2000.i.

[18] IEEE, 2001. IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book). IEEE Std 242-2001 (Revision of IEEE Std 242-1986). [

[19] IEEE, 2002. IEEE Guide for Protective Relaying of Utility-Consumer Interconnections. IEEE Std C37.95-2002 (Revision of IEEE Std C37.95-1989).0_1. [

[20] IEEE, 2003. IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems. IEEE Std 1547-2003.1-28. [

[21] Jenkins, N., Strbac, G., Ekanayake, J., 2010. Distributed Generation. Institute of Energy and Technology (IET).

[22] Joshi, K.A., Pindoriya, N.M., 2013. Risk assessment of unintentional islanding in a spot network with roof-top photovoltaic system—a case study in India. IEEE Innovative Smart Grid Technologies- Asia, p.1-6. [

[23] Laghari, J.A., Mokhlis, H., Bakar, A.H.A., , 2013a. Application of computational intelligence techniques for load shedding in power systems: a review. Energy Conv. Manag., 75: 130-140. [

[24] Laghari, J.A., Mokhlis, H., Bakar, A.H.A., , 2013b. A new islanding detection technique for multiple mini hydro based on rate of change of reactive power and load connecting strategy. Energy Conv. Manag., 76: 215-224. [

[25] Laghari, J.A., Mokhlis, H., Bakar, A.H.A., , 2014. A fuzzy based load frequency control for distribution network connected with mini hydro power plant. J. Intell. Fuzzy Syst., 26(3): 1301-1310. [

[26] Londero, R.R., Affonso, C.M., Nunes, M.V.A., , 2010. Planned islanding for Brazilian system reliability. Proc. IEEE PES Transmission and Distribution Conf. and Exposition, p.1-6. [

[27] Pahwa, S., Youssef, M., Schumm, P., , 2013. Optimal intentional islanding to enhance the robustness of power grid networks. Phys. A, 392(17): 3741-3754. [

[28] Saadat, H., 1999. Power System Analysis. McGraw-Hill, New York, USA.

[29] Silva, M., Morais, H., Vale, Z., 2012. An integrated approach for distributed energy resource short-term scheduling in smart grids considering realistic power system simulation. Energy Conv. Manag., 64: 273-288. [

[30] Terzija, V.V., 2006. Adaptive underfrequency load shedding based on the magnitude of the disturbance estimation. IEEE Trans. Power Syst., 21(3): 1260-1266. [

[31] UL, 2001. Inverters, Converters, Controllers and Interconnection System Equipment for Use with Distributed Energy Resources. UL 1741.

[32] Vasquez-Arnez, R.L., Ramos, D.S., Carpio-Huayllas, T.E.D., 2014. Microgrid dynamic response during the pre-planned and forced islanding processes involving DFIG and synchronous generators. Int. J. Electr. Power Energy Syst., 62: 175-182. [

[33] WADE (World Alliance for Decentralized Energy), 2006. World Survey of Decentralized Energy. Available from http://www.Localpower.Org/documents/report_worldsurvey06.pdf [Accessed on <month>Oct.</month><day>2</day>, 2013].

[34] Walling, R.A., Miller, N.W., 2002. Distributed generation islanding—implications on power system dynamic performance. IEEE Power Engineering Society Summer Meeting, p.92-96. [