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Optimal utilization of frequency ancillary services in modern power systems

e-Prime - Advances in Electrical Engineering, Electronics and Energy 2024年 9卷

作者： Ullah, Kaleem Ullah, Zahid Basit, Abdul Gruosso, Giambattista US-Pakistan Center for Advanced Studies in Energy University of Engineering and Technology Peshawar Peshawar 25000 Pakistan Dipartimento di Elettronica Informazione e Bioingegneria Politecnico di Milano Piazza Leonardo Da Vinci 32 Milan 20133 Italy Manager R&D National Power Control Center National Transmission and Dispatch Company Islamabad 44000 Pakistan

The widespread global adoption of wind energy sources has established a significant presence in the existing power grid. However, the massive integration of intermittent wind energy poses forecasting errors, prompting the need for supplementary reserves from conventional energy sources with increased operational expenses and carbon emissions. Hence, to facilitate the seamless operation of large-scale wind-integrated power grids, it is imperative to harness the potential of renewable energy sources and leverage flexible loads to deliver power-balancing services. In this research, dynamic real-time power dispatch strategies have been developed for the automatic generation control (AGC) system to integrate the reserve capacities of conventional generation units and wind power plants and utilize the demand response capabilities of flexible loads for power balancing services. A comprehensive power system grid model was developed in DigSilent PowerFactory software, consisting of coal-based energy systems, wind energy systems, gas turbines, and cold storage units as flexible loads. The study is divided into different case studies to assess the impact of each scenario on system operation in mitigating the forecasting errors of wind power plants. Further, a comparative analysis was performed to illustrate the effectiveness of each case study. The analysis showed that Case Study III, where reserves are provided by coal energy systems and cold storage units, yielded the highest reduction in Positive Regulation (PR) and Negative Regulation (NR) errors, at 89.0% and 94.15%, respectively. Conversely, Case Study IV demonstrated the least reduction in errors, with 67.82% in PR and 78.41% in NR. However, it indicates that reserves can be supplied from wind energy systems and flexible loads without the support of conventional power plants. © 2024 The Author(s)

关键词： and automatic generation control Coal-based Energy Systems Frequency Regulation Power Dispatch Strategies Wind Energy Systems

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