1. 智能电网保护和运行控制国家重点实验室, 江苏省南京市 211106; 2. 南瑞集团有限公司(国网电力科学研究院有限公司), 江苏省南京市 211106
1. State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China; 2. NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China
On 9 August 2019, a blackout event with significant impacts occurred in the UK electric power system. According to the technical report submitted by the electricity system operator, UK, several separate and simultaneous events led to a large amount of sudden power deficiency that exceeds the requirements of the security and quality of supply standard(SQSS)in terms of the infeed loss that was required to be secured for. This caused a rapid fall in system frequency which eventually triggered the correct operation of the low frequency demand disconnection scheme, resulting in the supply disruption to a significant number of customers. This paper presents a description of the event evolution, conclusions and recommendations, based on the technical report. Several recommendations related to frequency stability control technology are then proposed, i. e. improvement of the accuracy and rapidness of load tripping as a control action, research on the control logics to block chain reactions, and enhancement of the system-level experimental verification for the dynamic behaviors of new power generation equipment.
FANG Yongjie.Reflections on Frequency Stability Control Technology Based on the Blackout Event of 9 August 2019 in UK[J].Automation of Electric Power Systems,2019,43(24):1-5. DOI:10.7500/AEPS20191011006.