AUTHOR=Kuo Xin , Hongxuan Zhang , Wenzu Wu , Jingpeng Chen , Qixing Liu 

TITLE=The design of an improved index system for frequency control in China Southern Power Grid

JOURNAL=Frontiers in Energy Research

VOLUME=12

YEAR=2024

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2024.1360272

DOI=10.3389/fenrg.2024.1360272

ISSN=2296-598X

ABSTRACT=<p><bold>Introduction:</bold> In order to dispatch frequency regulation resources in regional power grids efficiently and promote the development of spot markets, China Southern Power Grid (CSG) established the unified frequency regulation control area. However, the existing regional control performance standards (CPS) for evaluating the performance of frequency control in bulk power systems is no longer suitable for the unified frequency control mode.</p><p><bold>Method:</bold> This paper proposed an innovative frequency control performance standard, named tertiary control performance standards (TCPS) and used Gaussian mixture model (GMM) and folded normal distribution (FND) to describe the distributions of frequency deviations and power deviations of tie line.</p><p><bold>Result and Discussion:</bold> Based on these probability models, the parameters of the proposed TCPS can be determined optimized. Finally, case studies were carried out with the practical data from CSG and indicated that the parameters of proposed TCPS index could be calculated and improved the control performance for the real time power balance of the regional power grid with spot markets.</p>