隨著國際與國內經濟高速發展，帶動電力需求不斷攀升，加上電源側分散型電源的深度開發及用電側高效率可控設備的性能追求，愈來愈多單相/三相及間歇性電源/劇烈變動負載併入系統運轉，使電力品質的挑戰日益高漲。本文主要檢視用戶端因負載運轉特性而導致之電力品質問題，包括三相不平衡、諧波汙染、功率因數及電壓閃爍等，其成因、影響、相關管制標準及改善方法亦一併探討。
本論文提出以靜態虛功補償器搭配主動式濾波器之混合式濾波器架構，用於改善負載側電力品質之綜合補償策略，以維持用電設備可靠且穩定的電力系統供電品質。其中，靜態虛功補償器係以對稱分量法作為無效功率控制之基礎；主動式濾波器則應用瞬時無效功率法即時計算補償電流命令。此外，提出結合對稱分量法與瞬時無效功率法，並應用選擇性補償策略作為本文開發電力品質綜合補償系統之依據。本論文使用Matlab/Simulink 建置混合式濾波器架構及以Matlab/App Designer開發電力品質綜合補償系統，在多種不同模擬情境下驗證，結果顯示本論文所提之方法皆可達成所預期的電力品質改善目標。

With the rapid development of international and domestic economies, the electricity demand is increased dramatically. In addition to the nationwide explored intensively of the decentralized resources and the used widely of high-efficiency controllable equipment are introduced into the power system. The more and more single-phase/three-phase and intermittent power/variable loads have been integrated into the system operation. The consequence is that the power quality of the system may face serious challenge. First of all, this thesis majorly examines the power quality issues caused by load operation at the customer side, including three-phase unbalance, harmonic pollution, power factor, and voltage flicker, etc. Next, the related standards, causes/effects and response solutions are further reviewed.
In this thesis, a hybrid filter architecture is designed with a static reactive power compensator and an active filter to improve the load-side power quality. The designed hybrid filter is a comprehensive compensation strategy to maintain the power supply quality of the power system. In this hybrid filter, the static reactive power compensator is based on the component method to realize reactive power control. Moreover, the active filter uses the instantaneous reactive power method to realize the real-time calculation of the compensation current command. In addition, a combination of the symmetrical component method and the instantaneous reactive power method is proposed, and the selective compensation strategy is applied as the basis for developing a comprehensive power quality compensation system in this thesis. Finally, the designed hybrid filter architecture is built by Matlab/Simulink, and the comprehensive power quality compensation system is developed by Matlab/App Designer. A variety of simulation scenarios show that the designed hybrid filter can achieve the expected improvement of power quality.

[1] K. R. Cardoso, R. S. Lima, B. S. M. C. Borba, J. A. S. Larrea and M. Z. Fortes, "Electric Vehicles Insertion in Power Grids and Impacts on Power Quality: A Conventional and Inductive Charging Comparative Study," in Proc. 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America), Gramado, Brazil, Sept. 2019.
[2] H. P. Corrêa and F. Henrique Teles Vieira, "Evaluation of Power Quality Impacts due to Photovoltaic Penetration in Distribution Grids via Time-Domain Simulation," in Proc. 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), Santos, Brazil, Dec. 2019.
[3] J. B. Rossman, A. M. Murphy and R. P. Crittenden, "Tennessee Valley Authority (TVA) Power Quality Studies of 57 Prospective Large (200-MW Typical) Solar Generation Interconnections," in Proc. SoutheastCon 2021, Atlanta, GA, USA, March 2021.
[4] L. Hongbo et al., "Research on the Influence of Distributed Power Sources on Power Quality," in Proc. 2021 6th Asia Conference on Power and Electrical Engineering (ACPEE), Chongqing, China, April 2021.
[5] G. Singh, T. Cooke and W. Howe, "Impact of Microgrids on Power Factor measurements," in Proc. 2020 19th International Conference on Harmonics and Quality of Power (ICHQP), Dubai, United Arab Emirates, July 2020.
[6] D. Ivan, G. Lazaroiu, G. Ungureanu and O. Udrea, "Influence on the power quality of the connection of wind power into the electricity grid transmission," in Proc. 2014 16th International Conference on Harmonics and Quality of Power (ICHQP), Bucharest, Romania, May 2014.
[7] A. V. Shalukho, I. A. Lipuzhin and A. A. Voroshilov, "Power Quality in Microgrids with Distributed Generation," in Proc. 2019 International Ural Conference on Electrical Power Engineering (UralCon), Chelyabinsk, Russia, Oct. 2019.
[8] J. M. Tabora et al., "Assessing Energy Efficiency and Power Quality Impacts Due to High-Efficiency Motors Operating Under Nonideal Energy Supply," in IEEE Access, vol. 9, pp. 121871-121882, Sept. 2021.
[9] 楊耿杰，「電力系統不對稱計算」，中國電力出版社，2008。
[10] J. Nuno Fidalgo, C. Moreira and R. Cavalheiro, "Impact of Load Unbalance on Low Voltage Network Losses," in Proc. 2019 IEEE Milan PowerTech, Milan, Italy, June 2019.
[11] Y. Chen, M. Chen, Y. Liu and L. Chen, "Analysing the Voltage Unbalance Impact of Wind Farm on Traction Power Supply System," in Proc. 2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), Xi'an, China, June 2019.
[12] U. C. Chukwu, "The Impact of V2G on Power Factors," in Proc. 2020 Clemson University Power Systems Conference (PSC), Clemson, SC, USA, March 2020.
[13] B. Basta and W. G. Morsi, "Probabilistic Assessment of the Impact of Integrating Large-Scale High-Power Fast Charging Stations on the Power Quality in the Distribution Systems," in Proc. 2020 IEEE Electric Power and Energy Conference (EPEC), Edmonton, AB, Canada , Nov. 2020.
[14] Z. Ying and R. Hongtao, "Influence and Suppression of Large Capacity Impact Load on Power Quality of Power System," in Proc. 2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE), Shiga, Japan, Feb. 2021.
 
[15] A. M. Shiddiq Yunus, M. Saini and M. R. Djalal, "Impact of Connected Flicker Sources on DFIG Performance," in Proc. 2020 12th International Conference on Electrical Engineering (ICEENG), Cairo, Egypt, July 2020.
[16] C. N. M. Ho and C. -S. Lam, "Editorial for the special issue on power quality conditioning in modern power grids integrated emerging power electronic systems," in CPSS Transactions on Power Electronics and Applications, vol. 6, no. 3, pp. 191-192, Sept. 2021.
[17] E. A. Qasmi, W. Sun, J. Soomro, M. U. Tahir and F. A. Chachar, "Power Quality Analysis of Phase Controlled Bidirectional and Unidirectional AC Voltage Controllers and their impacts on input power system," in Proc. 2019 2nd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET), Sukkur, Pakistan, Jan. 2019.
[18] J. -W. Shin, J. -C. Kim, H. Lee, K. -H. Yoon, H. -S. Chai and J. -S. Kim, "Impact of SFCL According to Voltage Sags Based Reliability," in IEEE Transactions on Applied Superconductivity, vol. 31, no. 5, pp. 1-5, Aug. 2021.
[19] T. Vinnal, M. Jarkovoi and L. Kütt, "Voltage Dips and Swells in Low Voltage Networks of Estonia," in Proc. 2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), Riga, Latvia, Nov. 2018.
[20] 林海雪，「No. 1 IEC電能質量標準化的進展」，中國電力科學研究院，2015。
[21] 林海雪，「電能質量標準的新進展」，中國電力科學研究院，2009
[22] IEC technical committees and subcommittees
https://www.iec.ch/technical-committees-and-subcommittees#tclist
[23] "IEEE Recommended Practice for Monitoring Electric Power Quality," in IEEE Std 1159-2019, Aug. 2019.
[24] Roger C. Dugan, Mark F. McGranaghan, Surya Santoso and H. Wayne Beaty, "Electrical Power Systems Quality, Second Edition," The McGraw-Hill Companies, New York, 2003.
[25] 周林、張有玉、劉強、馬永強和武劍，「三相不平衡度的比較研究」，華東電力38卷2期，2010。
[26] "IEEE Guide for Self-Commutated Converters," in ANSI/IEEE Std 936-1987, 1987.
[27] M. H. Albadi, A. S. Al Hinai, A. H. Al-Badi, M. S. Al Riyami, S. M. Al Hinai and R. S. Al Abri, "Unbalance in power systems: Case study," in Proc. 2015 IEEE International Conference on Industrial Technology (ICIT), Seville, Spain, March 2015.
[28] D. Springer, E. Stolz and E. Wiedenbrug, "Experimental analysis of industry standards on derating of a three-phase induction motor due to thermal stress caused by voltage unbalance," in Proc. 2009 IEEE Energy Conversion Congress and Exposition, San Jose, CA, USA, Sept. 2009.
[29] 歐勝源(譯)，「電力電子學(Power Electronics)」，東華書局股份有限公司，2013。
[30] 胡成群，「諧波的成因、危害及抑制方法(一)」，農村電工2013年01期，2013。
[31] 胡成群，「諧波的成因、危害及抑制方法(二)」，農村電工2013年02期，2013。
[32] CIGRE JWG C4.24, "Power quality and EMC issues with future electricity networks," in CIGRE TB 719, 2018.
[33] H. Sharma, M. Rylander and D. Dorr, "Grid Impacts Due to Increased Penetration of Newer Harmonic Sources," in IEEE Transactions on Industry Applications, vol. 52, no. 1, pp. 99-104, Jan.-Feb. 2016.
[34] 「台灣電力股份有限公司電力調度要點」，2021。
[35] Lv Yanling, Yizhi Du, Qi Liu, Shiqiang Hou, and Jie Zhang, "Study and Stability Analysis of Leading Phase Operation of a Large Synchronous Generator" in Energies 2019, vol.12, no. 6, March 2019.
[36] 陳裕仁，「電壓閃爍計算及FPGA晶片設計」，博士學位論文，國立台灣科技大學電機工程系，2006。
[37] 關錦龍，「最大視在電力變動法應用於電壓閃爍之分析」，博士學位論文，國立台灣科技大學電機工程系，2003。
[38] A. Novitskiy and H. Schau, "Analysis of a Ratio between Delta V10 and Pst Flicker Criteria," in Proc. 2011 46th International Universities' Power Engineering Conference (UPEC), Soest, Germany, Sept. 2011.
[39] 雪平兼二，「電圧変動評価手法の問題点と今後の課題--ΔV10メータとIECフリッカメータの比較」，日本電力中央研究所，2000.
[40] 「台灣電力股份有限公司電壓閃爍管制要點」，2008。
[41] Zbigniew Hanzelka and Andrzej Bien, "Power Quality Application Guide. Voltage Disturbances. Flicker," Leonardo Power Quality Initiative, 2006.
[42] R. N. Beres, X. Wang, M. Liserre, F. Blaabjerg and C. L. Bak, "A Review of Passive Power Filters for Three-Phase Grid-Connected Voltage-Source Converters," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 4, no. 1, pp. 54-69, March 2016.
[43] Jinn-Chang Wu, Hurng-Liahng Jou, Kuen-Der Wu and Nan-Tsun Shen, "Hybrid switch to suppress the inrush current of AC power capacitor," in IEEE Transactions on Power Delivery, vol. 20, no. 1, pp. 506-511, Jan. 2005.
[44] Lei Wang, Man-Chung Wong and Chi-Seng Lam, "Adaptive Hybrid Active Power Filters," Springer Nature Singapore Pte Ltd, 2019.
 
[45] Y. Haroen and S. Riyadi, "Analysis of Instantaneous Representative Active Power Equality based Control Method for Three Phase Shunt Active Power Filter," in Proc. 2005 International Conference on Power Electronics and Drives Systems, Kuala Lumpur, Malaysia, Dec. 2005.
[46] 涂春鳴，「新型諧振阻抗型混合有源濾波器RITHAF研究」，博士學位論文，中南大學，2003。
[47] R. M. Mathur and R. K. Varma, "Thyristor-Based FACTS Controllers for Electrical Transmission Systems," John Wiley & Sons, Inc. 2002.
[48] CIGRE SC B4, "Flexible AC Transmission Systems, FACTS," Springer Nature Switzerland AG, 2020.
[49] H. Yang and S. Ren, "A Practical Series-Shunt Hybrid Active Power Filter Based on Fundamental Magnetic Potential Self-Balance," in IEEE Transactions on Power Delivery, vol. 23, no. 4, pp. 2089-2096, Oct. 2008.
[50] P. Salmerón and S. P. Litrán, "A Control Strategy for Hybrid Power Filter to Compensate Four-Wires Three-Phase Systems," in IEEE Transactions on Power Electronics, vol. 25, no. 7, pp. 1923-1931, July 2010.
[51] L. Wang, C. Lam and M. Wong, "Hybrid Structure of Static Var Compensator and Hybrid Active Power Filter (SVC//HAPF) for Medium-Voltage Heavy Loads Compensation," in IEEE Transactions on Industrial Electronics, vol. 65, no. 6, pp. 4432-4442, June 2018.
[52] L. Wang, C. Lam and M. Wong, "Multifunctional Hybrid Structure of SVC and Capacitive Grid-Connected Inverter (SVC//CGCI) for Active Power Injection and Nonactive Power Compensation," in IEEE Transactions on Industrial Electronics, vol. 66, no. 3, pp. 1660-1670, March 2019.
 
[53] D. Daftary and M. T. Shah, "Design and Analysis of Hybrid Active Power Filter for Current Harmonics Mitigation," in Proc. 2019 IEEE 16th India Council International Conference (INDICON), Rajkot, India, Dec. 2019.
[54] C. Lam, W. Choi, M. Wong and Y. Han, "Adaptive DC-Link Voltage-Controlled Hybrid Active Power Filters for Reactive Power Compensation," in IEEE Transactions on Power Electronics, vol. 27, no. 4, pp. 1758-1772, April 2012.
[55] S. Rahmani, A. Hamadi, K. Al-Haddad and L. A. Dessaint, "A Combination of Shunt Hybrid Power Filter and Thyristor-Controlled Reactor for Power Quality," in IEEE Transactions on Industrial Electronics, vol. 61, no. 5, pp. 2152-2164, May 2014.
[56] L. Wang, C. Lam and M. Wong, "Unbalanced Control Strategy for A Thyristor-Controlled LC-Coupling Hybrid Active Power Filter in Three-Phase Three-Wire Systems," in IEEE Transactions on Power Electronics, vol. 32, no. 2, pp. 1056-1069, Feb. 2017.
[57] H. M. A. Antunes, I. A. Pires and S. M. Silva, "Evaluation of Series and Parallel Hybrid Filters Applied to Hot Strip Mills With Cycloconverters," in IEEE Transactions on Industry Applications, vol. 55, no. 6, pp. 6643-6651, Nov.-Dec. 2019.
[58] Y. Terriche et al., "A Hybrid Compensator Configuration for VAR Control and Harmonic Suppression in All-Electric Shipboard Power Systems," in IEEE Transactions on Power Delivery, vol. 35, no. 3, pp. 1379-1389, June 2020.
[59] S. Das, D. Chatterjee and S. K. Goswami, "A GSA-Based Modified SVC Switching Scheme for Load Balancing and Source Power Factor Improvement," in IEEE Transactions on Power Delivery, vol. 31, no. 5, pp. 2072-2082, Oct. 2016.
[60] 安世超，「鋼鐵企業用靜止無功補償器(SVC)的結構設計與參數研究」，碩士學位論文，同濟大學電信學院，2009。
[61] H. Akagi, Y. Kanazawa and A. Nabae, “Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components,” in IEEE Transactions on Industry Applications, Vol. 20, No. 3, pp. 625-630, May 1984.
[62] T. Furuhashi, S. Okuma and Y. Uchikawa, “A study on the Theory of Instantaneous Reactive Power,” in IEEE Transactions on Industrial Electronics, Vol. 37, No. 1, pp. 86-90, 1990.
[63] H. Akagi, A. Nabae and S. Atoh, “Control Strategy of Active Power Filters Using Multiple Voltage-Source PWM Converters,” in IEEE Transactions on Industry Applications, Vol. 22, No. 3, pp. 460-465, 1986.
[64] P. C. Krause, “The Method of Symmetrical Components Derived by Reference Frame Theory” in IEEE Transactions on Power Apparatus and Systems, Vol. PAS-104, No. 6, 1985.
[65] 江彥勳，「應用主動式濾波器於穩態電力品質之綜合補償」，碩士學位論文，國立台灣科技大學電機工程系，2019。
[66] 陳瀚戎，「應用複合瞬時無效功率法於電力品質綜合補償之研究」，碩士學位論文，國立台灣科技大學電機工程系，2021。
[67] 柯唯翔，「諧波濾波器對電壓源型變流器諧波電流影響之研究」，博士學位論文，國立台灣科技大學電機工程系，2018。
[68] 江榮城，「電力品質(第二版)」，全華圖書股份有限公司，2011。
[69] 李家鴻，「混合式電力濾波器之新型電路架構」，碩士學位論文，國立高雄應用科技大學電機工程系碩士班，2006。