Jl. Tri Dharma Pintu 4 Kampus USU Medan +6285296303816 mte@usu.ac.id

 

 

Personal Info

Name                        :  Surya Hardi, Ph.D
Permanent address     :  Jl. Suka Rindu No. 2D Kel. Suka Maju (STM) Medan Johor, Medan.
Phone Number           :  085373643767
Email Address            : This email address is being protected from spambots. You need JavaScript enabled to view it.

Academic qualification:  

B.Sc.        Electrical Engineering     1985    University of North Sumatera (USU).
Masters    Electrical Power Systems    1992    Bandung Institute of Technology (ITB)
PhD         Electrical Power Systems     2016    UniMAP

Employment history
1983 – 1985     Tutor at Department of Electrical Engineering, University  Of North Sumatra (USU), Indonesia.
1986 – Until now  Lecturer at Department of Electrical Engineering, University Of  North Sumatra (USU-Indonesian).
1987 – 1995     Technician Staff on CV. Avia Volta Padang
1987 - 2005    Lecturer at Department of Electrical Engineering University of Muhamadyah Sumatera Utara (UMSU)
1993 – 1995    Secretary of Electrical Engineering Department, University of Muhamadyah Sumatera Utara (UMSU)
1995 – 1996    Head of Electrical Engineering Department, University of Muhamadyah Sumatera Utara (UMSU)
1995 – 1997    Expert Staff on The Research Center of Study for Environmental and Resource (PusLit SDAL USU).   
2001 – 2003    Senate member of Engineering Faculty, USU
1999 – 2005    Secretary of Electrical Engineering Department, USU (Indonesia).
2005 – 2006    General secretary of the Indonesian Power Engineers Association of the North Sumatra Province Regional  
2005s    Committee of Energy Planning Composing for the North Sumatera Province Regional.  
2004 – 2006    As Assessor for The Indonesian Power Engineer in North Sumatra Province Regional.

Professonal Memberships
Name of professional body    Membership category    Date of joining
Persatuan Insinyur  Indonesia (PII),  The Indonesian Engineers Association    Member    1990
Ikatan  Ahli Ketenagalistrikan  Indonesia (IATKI), The Indonesian Power Engineers Association    Member, Secretary General     2004-2006
IET membership    Associate, 2015

Teaching Experience
a.    Undergraduate
1.    Electromagnetic Field Theory
2.    Probability and Statistics
3.    Transmission Line
4.    Distribution System
5.    Power System Protection
6.    Grounding Power System
7.    Substation Design
8.    Research Methodology
9.    High Voltage Engineering.
 
b.    Post graduate
1.    Grounding and Lightning
2.    High voltage engineering and coordination

Research interests
1.    Energy Economic/Energy (Electrical) forecasting.
2.    Protection systems  
3.    Power System Grounding
4.    Power Quality in Power Systems

Research Grants
1.  Electricity Demand Analysis Based Econometric for Residential Customer  (A case Study of  North Sumatra and Aceh Provinces) USU Research Grant.  Project Leader: Ir. Surya Hardi, MSc (Other researcher: Ir. T.Ahri bahriun, MSc),  September 1993 – January 1994.
2. An Econometric Model Analysis to Electricity Demand. HEDS-High Education- JICA Research Grant., Project Leader: Ir. Surya Hardi, MSc  (Other researchers: Masykur Sjani and Ir. Zulkarnaen Pane) Jan.’94 –June’94.
3.   Comparative Study of Electricity Demand Forecasting for Residential. USU Research Grant . Project   Leader: Ir. Surya Hardi, MSc (Other researcher:  DR. Ir. Usman Baafai)  August 1995 – January 1996.
4.   Short Term Forecasting of Electricity Energy Demand and Peak Load. USU Research Grant. Project Leader: Ir. Surya Hardi, MSc (Other researchers: Ir. Abd.Rachman and Drs. Hasdari Helmi, MSc). September   1996 –  January 1997.
5.   Electricity Field Measurement Under Transmission Lines in Around Medan    City. USU Research Grant.  Project Leader Ir. Syarifuddin Siregar (Other researchers Ir. Surya Hardi, MSc and Ir. Sumantri Zulkarnaen).    Sept.1997 – January 1998
6.  The Demand of Electricity Energy and Income Per Capita for Residential:  (A Case Study of North Sumatera Province)., HEDS-High Educations-JICA     Grant. Project Leader: Nazlina (Other researchers Ir. Surya Hardi, MSc  and Siswarni)., October 1997- May 1998.
7.   The Performance Study of  Polluted Insulators in Sumatera Utara ( Case      Study Medan Industrial Estate). HEDS-High Educations-JICA Grant. Project  Leader: Ir. Bongas L. Tobing. (Other researchers Ir. Surya Hardi,  MSc  and Ir.  Syachrawardi), July 1998 - January 1999.
8.  The Electricity Energy Demand Forecasting Method for Long Term (A Case Study PT.  PLN   North Sumatera Province Regional). High Education  Grant.  Project Leader: Ir. Surya Hardi, MSc (Other    researchers: Syafruddin Hasan and Nazlina). September 1999 – March 2000.  
9.  Scale Model Test of Grounding Grid On Uniform Soil., High Education Grant  Project Leader : Ir. Zulakarnaen Pane, (Other researcher: Surya Hardi, MSc. September 2000 - March 2001.
10.  Evaluation of Short Term Forecasting Based on Time Series Analysis for      Energy Demand and Peak Load. High Education Grant. Project Leader: Ir. Surya Hardi, MSc (Other researcher: Ir. Zulkarnaen Pane). September 2000 – March 2001.
11.  Calculation of Earth’s Surface Potential In Substation., USU Research Grant. Project Leader: Ir.Zulakarnaen Pane, (Other researcher:Ir. Surya Hardi, MSc  Augustus 2003 – December 2003.
12. Soil Resistivity Measurement and Characterization in Perlis. Fundamental        Research Grant Scheme(FGRS)., Project leader: Ir. Surya Hardi, MSc.  (Other researchers : P.M. Dr. Ismail Daut, Risnidar Chan, Syafruddin Hasan,  Hasnizam Hanafi) January 2007.
13.  The Effect of Harmonics to Electrical Machines Performance. Fundamental       Research Grant Scheme., Project leader: Syafruddin Hassan (Other Researchers: Prof. Dr. Ismail Daut, Asykhin, Surya Hardi). January 2007.
14.  The Effect of Harmonic to Power Quality on ElectricEquipments.Fundamental       Research Grant Scheme (FRGS 2007)Project leader: Ir. Risnidar Chan  Bahaudin. (Other researchers:  Prof. Dr. Ismail daut, Prof. Dr.Ir. Che Mat Hadzer,  Moh.Rafi Azman, Ir. Surya Hardi, , MSc,  Noor Haidar).
15.  Investigation of Harmonics and Voltage Sag in Distribution Systems. Fundamental Research Grant Scheme (FRGS 2008).  Project leader: Ir. Surya Hardi, MSc (Others researchers: Prof.Ismail Daut,  Prof. Dr.Ir. Che Mat Hadzer, Risnidar, Indra Nisja).   
16.  Impact of Capacitor Bank Switching on Harmonic Distortion in Distribution   Network.  Fundamental Research Grant Scheme (FRGS 2008). Project leader: Ir. Indra Nisja, MSc. Prof.DR.Ismail Daut, Surya Hardi, Risnidar Chan.
17.  Monitoring and control of Harmonics Effect on Power Quality Due to Unballance source. Fundamental Research Grant Scheme (FRGS 2008)., Project leader: Risnidar Chan,  (Others researchers: Prof.DR.Ismail Daut, Prof. Dr.Ir. Che Mat Hadzer, Surya  Hardi, N.Hasym., Indra Nisja. M. Rafi).
18.  Effects of  Harmonics Distortion on Transformer Differential Relay. Fundamental Research Grant Scheme (FRGS 2010).  Project leader: Indra Nisja, (Others researchers: Prof. Ismail Daut, Surya Hardi, Syafruddin, Risnidar Chan.
19.  Impact of Voltage Sags on Adjustable Speed Drive (2012).Project leader: Surya Hardi.  Others researchers: Prof.DR.Ismail Daut, Mhod. Hafizi. Pungut Ibrahim.

Collaboration Research
1.  Mapping Systems for Connected Fault Customers Service., Engineering Faculty, USU- Surabaya Technology Institute (ITS) - Company of North Sumatera Regional State Electricity., in 1995.
2.  Study of Pollution Intensity on Insulators in North Sumatra Province”. Engineering Faculty , USU – Engineering Service of State Electricity Company (Jakarta)., in 1997.
3.  Study of Electricity Customers Satisfaction in North Sumatra. Engineering Faculty, USU - Company of North Sumatra Regional State Electricity. in 2002.

Publications
A.    Papers in refereed national & international journals
1.  Surya Hardi. “Effect of Harmonic on Electrical Distribution Apparatus”.  Majalah Ilmiah Saintek ITM., Edition March – May 1997.
2.  Zulkarnaen Pane and  Surya Hardi.” Mesh Voltage Percentage Determining of  Scale Model Testing.  Majalah Ilmiah Saintek ITM., Edition March - May 1997.
3.  Surya Hardi and Zulkarnaen Pane.”Polluted Insulator and Flashover” Majalah Ilmiah Saintek ITM., Edition, May – August 1998.       .
4. DR.Ir Usman Baafai and  Surya Hardi.”   Equation to Calculate Resistance of  Comparative Study of  Electricity Demand for Residential”.  Jurnal Komunikasi Penelitian. ISSN.0852-3908 Vol. 9 (2) 1998., March 98.
5. Zulkarnaen Pane and Surya Hardi. “Simple Person Foot in Substations”.  Buletin Ilmiah STTH ISSN:083-5175., Edition 09 April 1999.
6. Surya Hardi dan M.Irwanto.” Dynamic Stability Improvement of Electrical Power Systems with UPEC Installations Based on Return Difference Equations. ”Jurnal Sistem Teknik Industri USU, ISSN. 1411-5247 Vol. 4. N0.9 July 2003.  
7. Surya Hardi, Ukurta Tarigan, and Siswarni.”Electricity Energy Demand Analysis for Residential (A Case Study North Sumatra Province), Jurnal Sistem Teknik Industri.USU, ISSN. 1411-5247 Vol. 4. N0.9 July 2003.
8. Zulkarnaen Pane and Surya Hardi. “Scale Model Testing  of  Grounding Grid on Uniform Soil”., Jurnal Komunikasi Penelitian USU. ISSN.0852-3908 Vol. 13 (1) 2001 March.
9. Surya Hardi. “Transmission and Distribution Losses”., Jurnal Teknik Simetrika., ISSN.1412-7806 Vol. 2, N0. 2 , August 2003.
10.  Surya Hardi  dan Zulkarnaen Pane.Lightning Fault Protection on Direct connected Generator to Over Head Transmission Lines., Jurnal Teknik Simetrika., ISSN.1412-7806 Vol. 2, No. 2 , Agustus 2003.
11.  I. Daut, Surya Hardi and Risnidar Chan Bahaudin,  Mochd. Rafi Azman,  “The Safety Performance Improvement Of The Grid  Grounding Systems”,
12.  Mohd Herwan Sulaiman, Mohd Wazir Mustafa, Surya Hardi, Omar Aliman and  Mohamad Suhaizal Abu Hassan. Tracing Reactive Power Flow and Loss in Electric Power Systems. International Energy Journal 10 (2009) 45-54.
13.   Surya Hardi, I. Daut. I. Nisja, Rohana,,”  Effect of voltage sag types on AC motor drive – test result. Journal of Environmental Research and Development. (impact factor 0.607), Vol. 7 No. 4A, April-June 2013.
14.      Muhd. Hafizi, Surya Hardi, Mohd. Zamri Hasan, Teaching Distance Relay using Matlab/Simulink Graphical user Interface, Procedia Engineering Volume 53, 2013, Pages 264–270.
15.      Surya Hardi, I. Daut, I. Nisja, Musdar Dahlan” Simulation of the effects of voltage sag types on induction motor”. Journal of Engineering Research and Education (JERE), Vol. 7 (2013) 69-80.
16.  Surya Hardi, Muhd. Hafizi, Rohana Ismail,” Adjustable Speed Drives Response to Voltage Sags, Applied Mechanics and Materials Vol. 367 (2013) pp 171-180. Online available since 2013/Aug/16 at www.scientific.net © (2013) Trans Tech Publications, Switzerland  doi:10.4028/www.scientific.net/AMM.367.171.  Indexed by Scopus and Scimago Journal Ranking.
17.  Surya Hardi, Muhd. Hafizi, Muzamir Isa, Rohana Ismail,” Equipment Performance Due to Voltage Sags – Test Results for Contactor and Induction Motor”, GSTF Journal of Engineering Technology (JET) Vol. 2 N0. 3. Dec, 2013. DOI 10.7603/40707-013-0008-5. Indexed by Scopus. Ulrichsweb, EconBiz, EBSCO, CrossRef, ProQuest, Cabell's Directories, Index Copernicus, JournalSeek.
18.   Surya Hardi, I. Daut, Rohana, Muhd. Hafizi” Sensitivity of Induction Motor under Symmetrical Voltage Sags and Interruption. Advanced Materials Research Vols. 875-877 (2014) pp 1923-1928 © (2014) Trans Tech Publications, Switzerland                  doi:10.4028/www.scientific.net/AMR.875-877.1923. Indexed by Scopus and Scimago Journal Ranking.
19.  Surya Hardi, Muzamir Isa, Syafrudin Masri, Muhd. Hafizi, I. Nisja,”Testing of Adjustable Speed Induction Motor Drives under Voltage Sags and Interruption.  International Journal of Energy and Power Engineering Research (IJEPER) 2 (1) 2014, Jun,  22-28, , Universiti Malaya (UM).  2289-5620, indexed by DOAJ and Google Scholar.
20.   Nisja, I., Idris, M. H., M. Syafrudin, Surya Hardi, Isa, M.” The Effect of Harmonic Distortion on the Performance of Differential Relay for Distribution Transformer Protection”. Advanced Materials Research,  Trans Tech Publications, Switzerland Indexed by Scopus and Scimago Journal Ranking, (Accepted and published in 2015).
21.  Muhd. Hafizi, Surya Hardi, Mohd Zamri hasan, Indra Nisja ”  Modelling and Simulation of Transmission Line Auto-reclose Scheme Using Matlab/Simulink”. Journal of Electrical Engineering & Technology (JEET),  Impact factor: 0.517. (Submmited in 2015).
22.   Surya Hardi, Muhd. Hafizi, Muzamir Isa, Syafrudin Masri, Mohd Azrik bin
Ruslan, Syafruddin Hasan, I. Nisja.,” Effects of Different Voltage Sag Types on Induction Motor”., Langkawi, Malaysia. Applied Mechanics and Materials” Vol. 793 in 2015. doi:10.4028/www.scientific.net/AMM.793.262. Trans Tech Publications, Switzerland Indexed by Scopus and Scimago Journal Ranking.
23.  M.  A. Roslan, S. Hasan, Surya Hardi,  and Indra Nisja,.” Survey of Droop Control Technique for Parallel Inverter Operation” Applied Mechanics and Materials Vol. 793 (2015) pp 247-251 Submitted: 2015-02-08 © (2015) Trans Tech Publications, Switzerland Accepted: 2015-06-17 doi:10.4028/www.scientific.net/AMM.793.247.

B.    Papers in refereed national & international conferences
1.      Surya Hardi, Masykur Sj dan T. ahri Bahriun., “Electricity Energy Demand Analysis for Residential Customer Based on econometric in North Sumatra and Aceh Provinces ”, Prosiding Seminar Staff Pengajar Fak. Teknik., HEDS-Dikti-JICA., Medan, Feb.1993.
2. Surya Hardi., “An Econometric Model Analysis of Electricity Energy Demand”. Prosiding Seminar Hasil Penelitian SDPF (93/94). HEDS-DIKTI-JICA, Batam, July 1994.
3. Surya Hardi, Masykur Sj, Zulkarnanen Pane dan Sri Murni Wiratma., “Electricity energy Demand   Forecasting For Residential Using Economic approach”.,Prosiding Seminar Hasil Penelitian SDPF (94/95). HEDS-DIKTI-JICA. Medan., August 1995.
4.       Surya Hardi, Syachrawardi,  and Bonggas L. Tobing., “Study of    Pollutant  Accumulation on Insulator 20 kV in Mabar Industry Area  Medan”., Prosiding Seminar Nasional & Work Shop Teknik Tegangan tinggi II, 29-30 September 1999., Pasca Sarjana UGM, Jogyakarta.
5.       Surya Hardi dan Bonggas L. Tobing., “Influence of Mechanical Stress to Dielectric strength on Insualtion Paper”., Prosiding Seminar Nasional & Work Shop Teknik Tegangan tinggi III, 20-21 Nopember 2000. Universitas Indonesia (UI), Jakarta.
6.       M. Irwanto dan Surya Hardi., “Dynamic Stability Improvement of Electrical Power Systems with UPEC Installations Based on Fuuzy Logic On Transmission Linesi”., Proceding seminar CESI & SITIA., September. 2002, Surabaya.
7.       I. Daut, Surya Hardi and Risnidar Chan. “Influence of Soil Resistivity     On Grounding System For Substation”.,Malaysia Technical Universities Conference and Technology (MUCET 2006) 19-20 December 2006.  Batu Pahat, Johor Baru, Malaysia.
8.    I.Daut, Risnidar Chan. Surya Hardi and Noor Haidar “The Effect of harmonic in Three-Phase
   Unbalanced Load Using Load Flow Analysis.    Malaysia Technical Universities Conference
   and Technology (MUCET 2006) ) 19-20 December 2006. Batu Pahat, Johor  Baru, Malaysia.
9.    Mochd. Rafi Azman, Noor Hasnizam Hanafi, Surya Hardi and Ahmad Gafar,.” Lab  Intensive of  Substation Design”., at    AEEEAP Reg. Symp. On Eng. Education. 14 February 2007, University Malaya – K. Lumpur.
10.    I.Daut,  Risnidar Chan, Surya Hardi “Effect Harmonic akibat Beban Tak Seimbang Pada System Fasa Dengan Metoda Aliran Daya.”  Konfrensi Ilmiah Ke-2 Persatuan Pelajar Indonesian (PPI-Malaysia), 18 Februari   2007,  UKM-Bangi, Malaysia.
11.   I.Daut, Surya Hardi, Risnidar Chan, “Influence of Soil  Resistivity and  Ground Grid Area On Safety of substation. Konfrensi Ilmiah Ke-2 Persatuan Pelajar Indonesian (PPI-Malaysia), 18   Februari 2007, UKM-Bangi, Malaysia.
12.    I.Daut,C.M.Hadzer, Surya Hardi and Risnidar Chan.,”Voltage sag and  sensitive load”.   Proceeding on the 1st Engineering conference in UniMAS Serawak, 26-28 December 2007.
13.   I.Daut, Risnidar Chan, C.M.Hadzer, Surya Hardi and N.Hasym.,”Harmonics Effect on The Three Phase system due to Unbalance Harmonic Current Sources Using Load Flow Method. Proceeding on the 1st Engineering conference in UniMAS Serawak, 26-28 December 2007.
14.     I.Daut, Surya Hardi, C.M.Hadzer, R.Chan, Indra, N.,”Analysis due to Faults in Utility Distribution System. Proceeding on Scientific Conference (SC) III PPI, UKM Bangi Malaysia, 19 January 2008.
15.   N.Indra, D.Ismail, M.Syafruddin, C.Risnidar, Surya Hardi.”Modelling of Fluoerescent Lamp with electromagnetic ballast for Harmonic Prediction”. Proceeding on Scientific Conference (SC) III PPI, UKM Bangi Malaysia, 19 January 2008.
16.   I.Daut, R.Chan, Surya Hardi, C.M.Hadzer, , Indra, N.,”Harmonic Effect on The Power System   Due To Intallation of Shunt Capacitor. Proceeding on Scientific Conference (SC) III PPI, UKM Bangi Malaysia, 19 January 2008.
 17.   Surya Hardi, I.Daut, , C.M.Hadzer, R.Chan, Indra, N.,”Assessement of  Voltage Sag for  Industrial Customer”. Proceeding on Technical University confrence (MUCET 2008), Putra Plaza, Perlis, March 8-10, 2008.
18.   I.Daut,  R.Chan, Surya Hardi, , C.M.Hadzer, Indra, N.,”Harmonic Effect on The Power System Due To Installation of Capacitor and shunt filter., Proceeding on Technical University Confrence (MUCET 2008), Putra Palaza, Perlis, March 8-10, 2008.
19.   N.Indra, D.Ismail, M.Syafruddin, Surya Hardi,  R.Chan,.” Prediction of Harmonics Produced by Split Air Conditioner“. Proceeding on Technical University Confrence (MUCET 2008), Putra Plaza Perlis, March 8-10, 2008.
20.   Mohd Herwan Sulaiman, Mohd Wazir Mustafa,   Ismail Daut, Surya Hardi, Mohamad Suhaizal Abu Hassan.” Comparison Methods for Determining Generators Shares in Loads, Line Flows and Losses for Transmission Open Access.” Proceeding on The 2nd International Power Engineering and Optimizati-tion Conference (PEOCO2008), Shah Alam, Selangor, MALAYSIA. 4-5 June 2008. IEEE Xplore
21. I.Daut, R. Chan Bahaudin C.M.Hadzer, Surya Hardi,  N.Hashim, I.Nisja.,” Investigation of The Effect of Capacitor on Harmonic in Distribution System. Proceeding on The 2ndInternational Power Engineering and Optimizati-tion Conference (PEOCO2008), Shah Alam, Selangor, MALAYSIA. 4-5 June 2008. IEEEXplore.
22. Surya Hardi, I. Daut, C. M. Hadzer, R. Chan and Indra N, Muzamir Isa.,” Power Quality Problems In The Presence of  Adjustable Speed Drives”. Proceeding on 3rd Brunei International Conference on engineering and Technology (BICET). 3rd-5rd November 2008, Rizqun International Hotel Bandar Seri Bengawan, Brunei Darussalam.
23. I.Daut, R. Chan Bahaudin C.M.Hadzer, Surya Hardi, N Hashim, I.Nisja.,” Investigation on the Effect of Computer (PC) on Harmonic in Residential Customer.,” Proceeding on 3rd Brunei International Conference on engineering and Technology (BICET). 3rd-5rd November 2008, Rizqun International Hotel Bandar Seri Bengawan, Brunei Darussalam.
24. I.Daut, R.Chan Bahaudin, C.M.Hadzer, Surya Hardi, N Hashim, I.Nisja,” Investigation on the Effect of Shunt Capacitor and Shunt Filter on Harmonic in Distribution System”. 2nd IEEE International Conference on Power and Energy (PECON 08), Johor Baharu, Malaysia.1-3 December 2008. IEEE Xplore
25. Surya Hardi, I. Daut,  M. Rafi Adzman, C.M. Hadzer, R. Chan, M.Kassim Jilani.,” Voltage Sag Analysis and Sensitivity of Consumer in Low Voltage System”. Conference on International Conference on Science & Technology: Applications in Industry & Education (2008). 12-13 December 2008. University Technology Mara (UiTM) , Pulau Pinang, Malaysia.
26. Indra N., Ismail D., Syafrudin M., Surya Hardi., Risnidar C.B.,” A Study on Power Quality and its Problems in Commercial Building”. Conference on International Conference on Science & Technology: Applications in Industry & Education (2008). 12-13 December 2008. University Technology Mara (UiTM) , Pulau Pinang, Malaysia.
  27. I.Daut, Muhammad Irwanto, Surya Hardi, Syafruddin HS, Risnidar Chan, K. Anayet.,” Optimal Gain Determination by Using Return  Difference Equation to Improve  Oscilation of Power System Dynamic”. Conference on International Conference on Science & Technology: Applications in Industry & Education (2008). 12-13 December 2008. University Technology Mara (UiTM), Pulau Pinang, Malaysia.
28. Surya Hardi, I. Daut, C.M. Hadzer, R.Chan, I. Nisja, M. Irwanto.,” Power Quality Issues in Commercial Building, an Overview”.  Conference on 2nd Engineering Conference on Sustainable Engineering. Infrastructures Development &Management. December 18 -19, 2008, Crown Riveside Plaza, Kuching, Sarawak, Malaysia.                                                          
29. I.Daut., Risnidar. Chan., Surya Hardi., N Hashim.,  I.Nisja., Syafruddin S., M.Irwanto. ”Investigation of Shunt Filter Effects on Harmonics in Distribution System”. Third IEEE   International Power Engineering and Optimization Conference (PEOCO) 2009., 3-4 June 2009, Shah Alam Malaysia. IEEE Xplore
 30. I. Daut., M. Sembiring., M. Irwanto., Surya Hardi., R. Chan., I. Nisja.     “Photovoltaic Maximum Power Improvement UsingTwo Axis Solar Tracking”.,Third IEEE International Power Engineering and Optimization Conference (PEOCO)  2009. 3-4 June 2009, Shah Alam Malaysia. IEEE Xplore
31.  Indra N., Ismail D., Syafruddin HS., Risnidar C.B., Muhammad I., Surya Hardi.” Power Quality Monitoring at UniMAP Distributed Campus: Case Study at Library Office Building”. ”.,Third IEEE International Power Engineering and Optimization Conference (PEOCO)  2009. 3-4 June 2009, Shah Alam Malaysia. IEEE Xplore
32.   Surya Hardi., I.Daut, M.Irwanto, M.H. Sulaiman R. Chan, I. Nisja. “Power Quality Impact of Adjustable Speed Drives in Industrial Distribution  System”.Malaysian Technical Universities Conferences on Engineering and Technology    (MUCEET2009)., June 20-22, 2009, Ms Garden, Kuantan, Malaysia.
33. Surya Hardi, I. Daut, C.M. Hadzer.,”Predicting Characterization of Induction Motor under  Unsymmetrical Faults Condition. Engineering Postgraduate Conference (EPC)., 25-26 July 2009.  Kangar, Perlis.                                                 
34. Surya Hardi, I. Daut, Risnidar Chan, M.Irwanto, Indra, N., Muzamir Isa. “Power Quality of Low Voltage Consumer Loads”. The 11th International  Conference On Quality In Research (QIR) 2009. 3rd-6rd August 2009. University of Indonesia, Depok, Indonesia.
35. Indra N., Ismail D., Syafrudin M., Surya Hardi .,Risnidar C.B “Study of Power System Harmonic Effects on Distribution Transformer.” The 11th International Conference On Quality In Research (QIR) 2009. 3rd-6rd August 2009. University of Indonesia, Depok, Indonesia.
36.  I.Daut., M. Sembiring., M.Irwanto., Surya Hardi., Syafruddin HS. I.Nisja and K. Anayet.” Single Axis Sun Tracking Using Smart Relay”. The 11th International Conference On Quality In Research (QIR) 2009. 3rd-6rd August 2009. University of Indonesia, Depok, Indonesia.
37. I.Daut, Risnidar Chan, Surya Hardi, Noorhaidar H, I. Nisja, syafruddin HS, M.Irwanto.”Investigation of Harmonics Effect in   Laboratory due to Nonlinear Loads.  The 11th International Conference On Quality In Research (QIR) 2009. 3rd-6rd August 2009. University of Indonesia (UI), Depok, Indonesia.
38. Surya Hardi, I.Daut, M.Irwanto, R.Chan, I.Nisja.,” Effect of Voltage Sag on Contactors”.  International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
39. Chairul G.Irianto, Rudy Setiabudy, Maula Sukma Wijaya, Dharmananda Lugito, Surya Hardi.,”Performance analysis of Delta-Zigzag Connection Transformer With Secondary Symmetrical Cross-winding Minimized Harmonics Based on The Power Factor Value”.   International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
40. I.Daut, Surya H, YM.Irwan, M.Ezanni, Syafruddin, K.Anayet.,”Single Phase Induction Motor Performance Using Active Filter and Power Factor Correction”., International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
41. I.Daut, R.Chan Bahaudin, Surya H, I.Nisja, Syafruddin, Irwanto” Investigation on Harmonic Effect of Voltage Source”. International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
42. I.Daut, M. Sembiring, M.Irwanto, Noorsyafawati, Surya Hardi.,”Solar Radiation Potential for Photovoltaic Power generation based on Meterolgical data in Perlis.   International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
43. M. S Laili, Z.N Zakaria, Surya Hardi. and M.F Basir M.M.Yacob.,”High Voltage Calibration Analysis in IVAT using Statistcal Technique”. International Conference: Electrical Energy and Industrial Electronic Systems EEIES2009, 7-8 December 2009, Penang, Malaysia.
44. Surya Hardi, I.Daut, M.Irwanto, R.Chan, I.Nisja.,” An Experimental of Induction Motor due to Voltage sags and Momentary  Interruption.”The 2nd International Conference on Engineering and ICT, February 2010, Melaka, Malaysia.  
45. I.Daut, R.Chan, Surya Hardi, Irwanto,” Investigation on Harmonics Effect  due to Harmonics Types of Voltage Sources. The 2nd International Conference on Engineering and ICT, February 2010, Melaka, Malaysia.
46. I.Daut, M. Sembiring, M.  Irwanto, R.Chan, Surya Hardi, “Hargreaves model for estimating potential of photovoltaic power generation in Perlis,”. The 2nd International Conference on Engineering and ICT, February 2010, Melaka, Malaysia.
47. Surya Hardi, I.Daut.’”Sensitivity of Low Voltage Consumer Equipment to  Voltage Sags,” 4th IEEE International Power engineering & Optimization Conference (PEOCO), Syah Alam, Malaysia, 23-24 June 2010. IEE Explore
48. Muhamad Irwanto, I.Daut, Surya Hardi.,”Photovoltaic Powerred Un-interruptible Power suply Using Smart Relay,”. 4th IEEE International Power engineering & Optimization Conference (PEOCO), Syah Alam, Malaysia, 23-24 June 2010. IEE Xplore
49. Surya Hardi, I.Daut, Risnidar Chan, M.Irwanto, Rosnazri Ali, Indra Nisja.,”Induction Motor Behavior Due to Unsymmetrical and Symmetrical Faults”. International Post graduate Conference on Engineering 2010 (IPCE 2010), 16-17 October, 2010 at Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia.
50.  Surya Hardi, I.Daut, C.M. Hadzer, Risnidar Chan, P.Ibrahim, M.Irwanto. ’”Response of Induction motor to Balance Voltage Sags and Momentary Interruption,”. International Post graduate Conference on Engineering 2010 (IPCE 2010). 16-17 October, 2010 at Universiti Malaysia Perlis (UniMAP), Ulu Puah, Perlis, Malaysia.
51. M. Irwanto, I. Daut, , Rosnazri Ali, , Surya Hardi, Dina Maizana ,” “Optimization of photovoltaic Module electrical characteristics using generic algorithm,”. International Post graduate Conference on Engineering 2010 (IPCE 2010). 16-17 October, 2010 at Universiti Malaysia Perlis (UniMAP), Ulu Puah, Perlis, Malaysia.
52. Risnidar C, I. Daut, Surya Hardi, M.I. Yusoff, Rosnazri Ali ,”Investigation of relationship of ASD and type of voltage source on harmonic characteristic. International Post graduate Conference on Engineering 2010 (IPCE 2010). 16-17 October, 2010 at Universiti Malaysia Perlis (UniMAP), Ulu Puah, Perlis, Malaysia.
53. Rosnazri Ali,   I. Daut, Soib taib, M. Irwanto, Surya Hardi ,”An alternative approach to solar and grid connected hybrid electricity for homes and building in Malaysia”. International Post graduate Conference on Engineering 2010 (IPCE 2010). 16-17 October, 2010 at Universiti Malaysia Perlis (UniMAP), Ulu Puah, Perlis, Malaysia.
54. Surya Hardi, I.Daut.,“Testing of Induction  Motor Behavior under Symmetrical Voltage Sags and Interruption”. 9th International Power & Eenergy Conference (IPEC), Oct 26, 2010 –Oct 29, 2010 Singapore.
55. Surya Hardi, I.Daut., Testing of Contactors  under Voltage Sags and Non-sinussoidal Voltage Conditions’”. 2nd IEEE International Conference on Power and Energy (PECon 2010)., Nov. 29, 2010 – Dec. 1, 2010, Sunway Resort Hotel, Kulala Lumpur, Malaysia. IEEE Xplore.
56. Surya Hardi, Indra.Nisja, I.Daut, , Risnidar Chan,”Harmonic monitoring at  UniMAP Distributted Campus,” 5th IEEE International Power engineering & Optimization Conference (PEOCO), Syah Alam, Malaysia, 6-7 June 2011. IEEE Xplore.
57. Surya Hardi , I. Daut,  Risnidar Chan, Syafruddin Hs, I. Nisja, Surya T. Kasim,”Sensitivity of AC Contactor During Voltage Sags with Point on Wave and Nonsinusoidal Voltage Conditions,” International Science and Technology Exhibition  & Seminar“. USU, 12-13th July 2011, Tiara Convention Center Medan-Indonesia.
58. Syarifuddin Hasan, I. Daut, Surya Hardi, Risnidar Chan, Riswan D, Satria G. “No load Current, Harmonics Content and Power Factor as The Indicator of Transformer Core Saturation,” International Science and Technology Exhibition  & Seminar“. USU, 12-13th July 2011, Tiara Convention Center Hotel, Medan-Indonesia.
59. Risnidar Chan, I. Daut, Surya Hardi, Syafruddin Hs, I. Nisja and Yusniarti,” Investigation of Harmonics Characteristics in Printer Due to Different Types of Voltage Sags” International Science and Technology Exhibition  & Seminar“. USU, 12-13th July 2011, Tiara Convention Center Medan-Indonesia.
60. I.Daut.and Surya Hardi.,”Effect of Voltage Sags and Interruption on Induction  Motor Behavior,”. 2nd International Conference on Modelling and Simulation (ICOMOS 2011-VF, 21th–25th July 2011, by sponsored by Praise Worthy Prize S.r.l., Napoli, Italy. IEEE Xplore.
61. Surya Hardi , I. Daut.” Simulation of the Effects of Balance and Unbalance Voltage Sags on Induction Motor Behavior.,” International Post graduate Conference on Engineering 2011 (IPCE 2011). October, 2011 at Universiti Malaysia Perlis (UniMAP), Ulu Puah, Perlis, Malaysia.
62. Surya Hardi , I. Daut,” Sensitivity of AC Adjustable Speed Drives Under Voltage Sags” International Post graduate  Conference on Engineering 2011 (IPCE 2011). October, 2011 at  Universiti Malaysia Perlis (UniMAP), Ulu Pauh, Perlis, Malaysia.
63. Surya hardi, I. Daut, I. Nisja , R. Chan, Musdar Bin Dahlan “Simulation of the effects of voltage sag types on induction motor”. International conference Regional Economic Development Through Science Technology and Art (REDSTAR), 23 June2012, Medan Indonesia.
64. Surya Hardi, I. Daut, I. Nisja” Effect of voltage sag types on AC motor drive-Test results. ICER-12 5th International Congress of Environmental Research, 22-24 November, 2012, Kuala Terengganu, Malaysia.
65. Nisja.I, M. Syafrudin, M. Ismail I,Surya Hardi ,R. Chan.”Effects of harmonics distortion on the current transformer used for differential”.ICER-12 5th International Congress of Environmental Research, 22-24 November, 2012.  
66. Muhd Hafizi Idris,  Surya Hardi, Mohd Zamri Hasan.”  Teaching Distance Relay Using Matlab/Simulink Graphical User Interface. MUCET 2012 Conference: 20-21 November 2012 at Hotel Seri Malaysia, Kangar Perlis.
67. Surya Hardi , I. Daut , Rohana and Muhd Hafizi, “Sensitivity of Induction Motor under Symmetrical Voltage Sags and   Interruption”. International Conference on Frontiers of Mechanical Engineering, Materials and Energy (ICFMEME 2012) December 20-21, 2012. Beijing, China.  
68. Surya Hardi , I. Daut , Syafruddin and Muhd Hafizi” Induction  Motors Performance under Symmetrical Voltage Sag and Interruptions-Test result”. 2013 IEEE 7th international conference (PEOCO 2013). 3-4 June 2013, Langkawi, Malaysia. IEEE Xplore
69. Muhd Hafizi Idris, Mohd Saufi Abdullah, Surya Hardi, Ahmad Zaidi Abdullah, ,”Adaptive mho type distance relaying scheme with fault resistance compensation”,  2013 IEEE 7th international conference (PEOCO 2013). 3-4 June 2013, Langkawi, Malaysia. IEEE Xplore
70. Syafruddin Hasan, soib Taib, Surya Hardi, A.Rahim A.R., Ahmad Sukri,”Core loss characteristics analysis of power transformer under different frequencies excitation”, 2013 IEEE 7th international conference (PEOCO 2013). 3-4 June 2013, Langkawi, Malaysia. IEEE Xplore
71. Surya Hardi, Rohana and Muhd Hafizi ,”Adjustable Speed Drive Response to Voltage”.2013 International Conference on Machanics, Simulation and Control (ICMSC_2013), 22-23 June 2013, Kanyakumari, India.
72. Surya Hardi, Muzamir Isa, Muhd. Hafizi, I. Nisja, Syafrudin  Masri” Testing of Adjustable Speed Drives under Voltage Sags and Interruption”. The 2nd Power and Energy Conversion Symposium (PEC) 12th May 2014, Universiti Teknikal Malaysia Melaka (UTEM).
73. Syafruddin Hs, Surya Hardi, M. Isa, M.A. Ruslan, Hafizi, M, M. Fitra” Voltage current waveforms appearance of single phase power transformer due to dc bias”. The 2nd Power and Energy Conversion Symposium (PEC) 12th May 2014, Universiti Teknikal Malaysia Melaka (UTEM).
74. Nisja, I., Isa, , M. H., , Surya Hardi, M Idris M. Syafrudin.” The Effect of Harmonic Distortion on the Performance of Differential Relay for Distribution Transformer Protection”. The 2nd Power and Energy Conversion Symposium (PEC) 12th May 2014, Universiti Teknikal Malaysia Melaka (UTEM).
75. D. Musdar, Nisja , I., Surya Hardi.”Word Recognition Using Adaptive Neuro Fuzzy Inference System”, The 2nd Power and Energy Conversion Symposium (PEC) 12th May 2014, Universiti Teknikal Malaysia Melaka (UTEM).
76. Surya Hardi, Muhd. Hafizi, Muzamir Isa, Syafrudin Masri, Mohd Azrik bin Ruslan, Syafruddin Hasan, I. Nisja.,” Effects of Different Voltage Sag Types on Induction Motor”., International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.   
77. Nisja, I., Idris, M. H., M. Syafrudin, Surya Hardi, Isa, M.” The Effect of Harmonic Distortion on the Performance of Differential Relay for Distribution Transformer Protection”. International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.
78. M. A. Roslan, S. Hasan, Surya Hardi, and Indra Nisja,.” Survey of Droop Control Technique for Parallel Inverter Operation”. International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia. International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.  
79. Nisja, I., Abdullah, A. Z, Masri, S., Surya Hardi,”Laboratory Test of Current Transformer Operates Under Harmonic Conditions”. International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.  
80. Syafruddin Hasan, Muzammir Isa, M.A.Roslan, Hafizi M., Musdar D.,Surya Hardi, Fitra M. “Harmonics Performances of Single Phase Transformer due to DC Bias”. International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.   
81.  Muhd Hafizi Bin Idris, Surya Hardi, Mohd Zamri Hasan, Yazhar Yatim & Syafruddin Hasan.” Accurate Phase to Phase Fault Resistance Calculation
       Using Two Terminal Data”. Pullman Hotel, Kuching Sarawak, Malaysia from 1 to 3 December, PeCon2014. IEEE Xplore.
82. Surya Hardi, Muhd. Hafizi, Muzamir Isa, Syafrudin Masri, Mohd Azrik bin Ruslan, Syafruddin Hasan, I. Nisja.,” Effects of Different Voltage Sag Types on Induction Motor”., International Conference on Electrical Power Engineering and Application. (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.
83. Surya Hardi” Performance of induction motor drive system under voltage and  Interruptions”. (Disertasi), University Malaysia Perlis, 2015.  

C. National & international conferences attended in the past 5 years
In year 2012.
1.     International conference Regional Economic Development Trough Science Technology and Art   (REDSTAR), 23 June2012, Medan Indonesia.
2.     5th International Congress of Environmental Research (ICER_2012), 22-24 November, 2012, Kuala Terengganu, Malaysia.

In  year 2013.  
1.    2013 IEEE 7th International Power Engineering and Optimization Conference (PEOCO 2013), 3- 4 June 2013, Bay View Hotel, Langkawi Malaysia.

In year 2014
1.    The 2nd Power and Energy Conversion Symposium (PEC) 12th May 2014, Universiti Teknikal Malaysia Melaka (UTEM), Malaysia.
2.    International Conference on Electrical Power Engineering and Application (ICEPEA 2014), 15-16 November 2014, Langkawi, Malaysia.   
      
In year 2015
1.    International Conference on Power, Energy & Communication Systems (IPECS 2015)" 24-25 Aug.2015, UniMAP, Perlis, Malaysia.