電力系統運轉之目標在於維持供電的穩定，隨著未來台灣電業法的更新，台灣電力公司面臨電業自由化及電力市場開放等議題。如何維持可靠的電源供給及系統的安全操作下引進市場機制，是未來主要研究的課題。因此，將規劃的機組發電排程結合電網安全性分析，在預設的電網事故下藉由排程的修正讓電網依然能保持安全狀態，使得電網能抵禦可預期事故的衝擊，以此來提高系統供電的可靠度。
本論文利用Python語言配合PSS/E內部應用指令建構出靈敏度分析流程，利用微調機組的發電量去計算指定線路功率的變化量，藉此分析出機組對應於指定線路的靈敏度，當偶發事故使線路過載時，用來做機組發電排程上的修正。在修正計算上利用Python語言撰寫粒子群演算法，在挑選出可解決的案例進行修正量的最佳化運算。

Providing stable power is the goal of the power system operation. With the new revision of Taiwan’s electricity act, Taiwan Power Company (TPC) is now facing power industry deregulation. Under open access of the power market environment, maintaining reliability and security of grid operation are the primary concerns. Security-constrained correction of unit scheduling is the reliability issue for grid to maintain at secure state after the contingency.
This thesis presents a method by coping Python code with PSS/E software to develop the sensitivity analysis between units and transmission lines. Sensitivity of specific power line to some specific unit can be calculated by the power flow deviation of line with respect to the power output deviation of the specific unit. The line sensitivity can be used in the correction process of unit dispatch scheduling when the line is overloading. Particle swarm optimization (PSO) is implemented by Python code to perform optimal unit dispatch corrections in some selected contingency scenarios.

[1] S.-J. CHEN, “Bid-Based Power Dispatch and GenCo’s Bidding Strategy in a Deregulated Environment”, National Sun Yat-sen University Master Thesis, 2001
[2] 台灣電力公司, “試行日前市場機制「火力機組競價估算輔助服務成本」執行報告”, 2014年11月
[3] R. Moreno, D. Pudjianto, and G. Strbac, “Transmission Network Investment With Probabilistic Security and Corrective Control,” IEEE Transactions on Power Systems, VOL. 28, NO. 4, November 2013.
[4] A. P. Meliopoulos and A. G. Bakirtzis, “Corrective control computations for large power systems,” IEEE Trans. Power Apparat. Syst., vol. PAS- 102, no. 11, pp. 3598–3604, Nov. 1983.
[5] 吳元康, “電力市場設計成功與否的關鍵因素分析”, 台電工程月刊, 第796期, 2014
[6] A. Grey, and A. Sekar, “Unified solution of security-constrained unit commitment problem using a linear programming methodology”, IEEE Trans. Generation, Transmission & Distribution, IET, Vol.3, pp. 856-867 November 2008
[7] J. Yu and J. Mickey, "Market Solution in ERCOT Balancing Energy Market," Power Engineering Sociery Summer Meering, 2002 IEEE , Vol. 3,Zl-25, pp. 1348 -1353, July 2002.
[8] ERCOT,” Day-Ahead Operations”
[9] H. Hui, C.-N. Yu and S. Moorty, “Reliability Unit Commitment in the New ERCOT Nodal Electricity Market,” Proceedings of IEEE PES General Meeting, Calgary, Canada, July 2009.
[10] L. Yonggang, J. Jiang, “Experience with Operating the AncillaryService Markets in ERCOT”, IEEE Power Engineering Society General Meeting, 2007, pp. 1-6, 24-28 June 2007
[11] S. P. Karthikeyan, I. J. Raglend, D.P. Kothari, “A review on market power in deregulated electricity market”, Int J Electr Power Energy Syst, , pp. 139–147, 48 (June) (2013).
[12] A. J. Wood and B. F. Wollenberg, “Power Generation, Operation, and Control”, Wiley Interscience, second edition, 1996.
[13] Javier Antonio Lopez Posadas, “Dynamic Security Analysis and Controls Based on System Real-Time Model”, National Sun Yat-sen University Master Thesis, 2014
[14] Y. Xu, Z.-Y. Dong, Z. Xu, R.Zhang and K.-Wong, “Power System Transient Stability-Constrained Optimal Power Flow: A Comprehensive Review” , IEEE Power and Energy Society General Meeting, San Diego, 2012
[15] C. Liu, K. Sun, Z. H. Rather, Z. Chen, C. L. Bak, P. Thøgersen, and P. Lund, “A Systematic Approach for Dynamic Security Assessment and the Corresponding Preventive Control Scheme Based on Decision Trees”, IEEE Transactions Power Systems, vol.20, no.4, pp.2381-2388, 2005.
[16] Y. Kun, C. Xingying, C. Yijia, “Dynamic security analysis of the urban power grid in islanding”, International conference on advanced power system automation and protection (APAP), Beijing, 2011.
[17] P. Kundur, J. Paserba, V. Ajjarapu, G. Andersson, A. Bose, C. Canizares, N. Hatziargyriou, D. Hill, A. Stankovic, C. Taylor, T. V. Cutsem, and V. Vittal, “Definition and Classification of Power System Stability”, IEEE Transactions on Power Systems, VOL. 19, NO. 2, MAY 2004.
[18] North American Electric Reliability Council, “Special Protection System (SPS) and Remedial Action Schemes (RAS): Assessment of Definition, Regional Practices and Application of Related Standards”, 2013.
[19] U. Kerin, G. Bizjak, E. Lerch, O. Ruhle and R. Krebs, “Dynamic Security Assessment using Time-Domain Simulator”, IEEE/PES Power System Conference and Exposition, Seattle, 2009.
[20] Siemens Industry, Inc., “PSS®E 33.5 Program Operation Manual”, October 2013
[21] Y. Valle, G. K. Venayagamoorthy, S. Mohagheghi, J-C Hernandez, and R. G. Harley,” Particle Swarm Optimization: Basic Concepts, Variants and Applications in Power Systems”, IEEE Transactions on Evolutionary Computation, VOL. 12, NO. 2, APRIL 2008
[22] C. Li, S. Yang, and T. T. Nguyen, "A self-learning particle swarm optimizer for global optimization problems", IEEE. T. Syst. Man. Cy. B, vol. 42, pp. 627-646, 2012.
[23] T. Niknam and F. Golestaneh, “Enhanced Adaptive Particle Swarm Optimization Approach for Dynamic Economic Dispatch of Units Considering Valve-Point Effects and Ramp Rates”, IET Generation, Transmission and Distribution, vol. 6, iss. 5, pp. 424 – 435, 2002.
[24] 台灣電力公司,“台灣電力股份有限公司輸電系統規劃準則”
[25] J. M. Wojciechowski, “A general approach to sensitivity analysis in power systems”, IEEE International Symposium on Circuits and Systems, vo1.1, pp. 417-420, 1988.
[26] M. J. Laufenberg and M. A. Pai, “Sensitivity theory in power systems: Application in dynamic security analysis,” in Proc. IEEE Int. Conf. Control Applications, Dearborn, MI, Sep. 15–18, pp. 738–743, 1996.
[27] M. Parvania, M. Fotuhi-Firuzabad, and M. Shahidehpour, “ISO’s Optimal Strategies for Scheduling the Hourly Demand Response in Day-Ahead Markets,” IEEE Transactions On Power Systems, VOL. 29, NO. 6, NOVEMBER 2014.
[28] C. Liu, M. Shahidehpour, Z. Li, and M. Fotuhi-Firuzabad, “Component & mode models for short-term scheduling of combined-cycle units,” IEEE Trans. Power Syst., vol. 24, pp. 976–990, May 2009.