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Multi period linearized optimal power flow model incorporating transmission losses and thyristor controlled series compensators

This paper presents multi-period linearized optimal power flow (MPLOPF) with the consideration of transmission network losses and Thyristor Controlled Series Compensators. The transmission losses are represented using piecewise linear approximation based on line flows. In addition, the nonlinearity due to the impedance variation of transmission line with TCSC is linearized deploying the big-M based complementary constraints. | ISSN 1859-1531 - THE UNIVERSITY OF DANANG, JOURNAL OF SCIENCE AND TECHNOLOGY, NO. 6(127).2018 31 MULTI-PERIOD LINEARIzED OPTIMAL POWER FLOW MODEL INCORPORATING TRANSMISSION LOSSES AND THYRISTOR CONTROLLED SERIES COMPENSATORS Pham Nang Van1, Le Thi Minh Chau1, Pham Thu Tra My2, Pham Xuan Giap2, Ha Duy Duc2, Tran Manh Tri2 1 Hanoi University of Science and Technology (HUST); van.phamnang@hust.edu.vn, chau.lethiminh@hust.edu.vn 2 Student at Department of Electric Power Systems, Hanoi University of Science and Technology (HUST) Abstract - This paper presents multi-period linearized optimal power flow (MPLOPF) with the consideration of transmission network losses and Thyristor Controlled Series Compensators (TCSC). The transmission losses are represented using piecewise linear approximation based on line flows. In addition, the nonlinearity due to the impedance variation of transmission line with TCSC is linearized deploying the big-M based complementary constraints. The proposed model in this paper is evaluated using PJM 5-bus test system. The impact of a variety of factors, for instance, the number of linear blocks, the location of TCSC and the ramp rate constraints on the power output and locational marginal price (LMP) is also analyzed using this proposed model. Key words - Multi-period linearized optimal power flow (MPLOPF); mixed-integer linear programming (MILP); transmission losses; Thyristor Controlled Series Compensators (TCSC); big-M 1. Introduction Electricity networks around the world are experiencing extensive change in both operation and infrastructure due to the electricity market liberalization and our increased focus on eco-friendly generation. Managing and operating power systems with considerable penetration of renewable energy sources (RES) is an enormous challenge and many approaches are applied to cope with RES integration, mainly the management of intermittency. In addition to increasing power reserves, energy storage systems (ESS) can be .