Practices of the new power system in the UK and inspiration for the development of provincial power systems in China

doi:10.3969/j.issn.2097-0706.2022.07.003

Abstract

Abstract:

Construction of new energy-oriented power systems motivates the clean and low-carbon transformation of energy systems and the realization of the dual carbon target of China. However,the high-penetration renewable energy may bring the secure operation of power systems great challenges, including insufficient peak regulation capability,intense local congestions and the decline in power system inertia. The natural endowments and the power systems in the UK are similar to that in some typical provinces in China. The UK has been a pioneer in tackling the side effects of the high penetration of renewable energy. Therefore,the experience of the UK can provide valuable suggestions for the development of new power systems in China. Firstly, the transformation process of the power systems in the UK on both supply and demand sides and the transformation goals in terms of carbon emission,energy consumption and energy systems are introduced. The advanced practices of the UK in dealing with renewable energy penetration include the guidance of policies and laws,the construction of fundamental infrastructures,the reform of the electricity market mechanism,the digitalization of power transmission and distribution systems,the application of edging technologies and equipment and the operating adjustment for the power systems. The experience of the UK's new power system construction is summarized and divided into five aspects： developing the low-carbon resources according to local conditions, adjusting policies and regulations in line with cutting-edge technologies, making a flexible, fair, unified and open market mechanism, advancing the application of new technologies and digital transformation and facilitating system upgrades and operation adjustment. Taking the power grid of Jiangsu Province as the example,the inspiration for the development of provincial power systems in China from the UK's experience is expounded.

Key words: carbon neutrality, new power system, high-penetration renewable energy, clean and low-carbon transformation, power system of the UK, provincial power system

CLC Number:

TK01：TM73

WANG Sheng, TAN Jian, SHI Wenbo, ZOU Fenghua, CHEN Guang, WANG Linyu, HUI Hongxun, GUO Lei. Practices of the new power system in the UK and inspiration for the development of provincial power systems in China[J]. Integrated Intelligent Energy, 2022, 44(7): 19-32.

Figures/Tables 7

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技术/系统需求		惯量	短路电流	无功和电压控制	系统恢复
现有技术	同步机	能	能	能	可能
	飞轮储能	能	可能	能	不能
	静态补偿器	不能	可能	能	—
	抽水蓄能	能	能	能	能
新技术	虚拟同步机	可能	可能	可能	可能
	带储能的电力电子设备	可能	可能	可能	可能
	氢气机组	能	能	能	能
	带CCUS的生物质能	能	能	能	能
	带CCUS的燃气机组	能	能	能	能
	其他电力电子设备	不能	可能	可能	可能

频率服务	系统需求	容量要求
动态调节	在±0.5 Hz的法定限值内调节稳态频率	最高300 MW
动态控制	将标准事件下的频率控制在频率风险和控制报告(FRCR)给定的标准范围内	最高1 400 MW
快速备用	60 s内将频率恢复到法定范围（±0.5 Hz）	最高1 400 MW
慢速备用	在15 min内将频率恢复到工作范围(±0.2 Hz)	最高1 400 MW