Primary Frequency Control in an Ancillary Services Market in Real Time and its Relationship with Solar-Wind Generation

Authors

Keywords:

Ancillary Service, Primary Control Frequency, Renewable Generation, Real Time Operation

Abstract

In Chile, the operation and market of renewable solar-wind generation and conventional gas-coal-diesel-hydraulic generation is made up of two electric generation systems that are managed in a complementary manner and currently interconnected under the name of “Sistema Eléctrico Nacional”, counting on the greatest potential and solar development in South America. However, the real-time operation is carried out by the Dispatch and Control Center, which treats them as two independent electrical generation systems in terms of supervision and control. The system faces the challenge associated with the massive potential and development of solar-wind generation concentrated in the northern area of Chile. This creates difficulties in its technical operation, especially in frequency control and the complexity of modeling in real-time the changing market for complementary services. Therefore, the primary frequency control is the complementary service that acts as the first action and line of defense to allow the system to integrate large blocks of renewable energy. It is necessary to deliver a minimum of dynamic reserves in times of ten seconds and five minutes to avoid the operation of stages of load disconnection / generation due to low / over frequency in front of large power disconnections of gas-fired plants (520 MW), hydraulic of reservoir (700 MW) and coal (380 MW) or loss of demand from large mining processes (300, 500 and 600 MW) for systemic frequency variations that should not exceed ± 0.7 [Hz].

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Author Biographies

Kristian Balzer, Pontifica Universidad Católica de Chile

K. Balzer Ph.D (c) at Pontificia Universidad Católica de Chile. In addition, he obtained the academic degree of Magister and Bachelor of Engineering Sciences, mention in Electrical Engineering at the Universidad de la Frontera, Chile. He works in the National Electric Coordinator of Chile as the person in charge of the operation and real-time market of the National Electric System in the Dispatch and Control Center, preserving the safety and the most economical operation.

David Watts, Pontificia Universidad Católica de Chile

Mr. Watts is an Industrial Civil Engineer, Pontificia Universidad Católica de Chile. In addition, he obtained the academic degrees of Doctor of Philosophy and Master of Science at the University of Wisconsin, Madison, United States. He works as Associate Professor in the Department of Electrical Engineering of the Pontificia Universidad Católica de Chile specializing in research on Solar and Wind Energy, Energy Economics and Natural Resources, Operation and Planning of Energy and Power Systems, Electric Markets, Energy Planning.

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Published

2021-10-13

How to Cite

Balzer, K., & Watts, D. (2021). Primary Frequency Control in an Ancillary Services Market in Real Time and its Relationship with Solar-Wind Generation. IEEE Latin America Transactions, 100(XXX). Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/5591