Adaptive Unified Differential Evolution Algorithm for Optimal Operation of Power Systems with Static Security, Transient Stability and Statcom Device
B. Venkateswarlu1, K. Vaisakh2
1B. Venkateswarlu, Head of Electrical and Electronics Engineering, Department of Technical Education, Andhra Pradesh, Vijayawada, India.
2K. Vaisakh*, Department of Electrical Engineering, AU College of Engineering(A), Andhra University, Visakhapatnam,  A.P, India. 

Manuscript received on November 20, 2019. | Revised Manuscript received on November 26, 2019. | Manuscript published on 30 November, 2019. | PP: 3309-3324 | Volume-8 Issue-4, November 2019. | Retrieval Number: D8084118419/2019©BEIESP | DOI: 10.35940/ijrte.D8084.118419

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Abstract: The complexity of a power system operating with transient stability/security constraints increases with increased interconnection of power transmission networks. Many of the power system’s secure operations are affected with the voltage/transient instability problems. Thereby, the modern power systems have considered solving optimal power flow (OPF) problems using voltage/transient stability constraints as a tedious and challenging task. Algebraic and differential equations of the voltage/stability constraints are included in non-linear optimal power flow optimization problems. In this work, the OPF problems with voltage/stability constraints are solved using a newly developed reliable and robust technique. Moreover, the impact of a FACTS device such as STATCOM device was investigated to test its impact in the enhancement of power system performance. An adaptive unified differential evolution (AuDE) technique is proposed to search in the non-convex and nonlinear problems to obtain the global optimal solutions. Compared to other existing methods and basic DE, the proposed AuDE algorithm has achieved better results under simulation conditions. The power system’s performance is considerably enhanced with STATCOM device. Efficiency of the proposed method in solving the transient and security constrained power systems for optimal operations were demonstrated using the numerical results obtained from IEEE 39-bus, 10-generator system and IEEE 30-bus, 6-generator system. Due to page limitation only 30-bus systems results are presented.
Keywords: Adaptive Unified Differential Evolution, Power System Transient Stability, Power System Operation, Power System Security, Optimal Power Flow.
Scope of the Article: Software and System Security and Privacy.