电力建设2018，Vol.39Issue(1)：68-75,8.DOI:10.3969/j.issn.1000-7229.2018.01.009
异步互联格局下川渝送端电网的频率稳定特性与控制策略
Frequency Stability Characteristics and Control Strategies for Chuanyu Transmission Network after Asynchronous Interconnection
摘要
Abstract
After Chuanyu power grid asynchronously interconnected with Sanhua and Northwest power grids,the bipole block of a large capacity ultra high voltage direct current (UHVDC) would cause a huge power surplus to Chuanyu power grid,which would cause a dramatic frequency increase in the sending endand even result in frequency instability and system splitting.It is urgent to study the influence of UHVDC block fault on the Chuanyu sending grid's frequency stability and the corresponding control strategy under asynchronous interconnection.Based on the peak load scenario of Chuanyu grid in 2020 after asynchronous interconnection is used for simulation and analysis,with considering primary frequency modulation characteristic,this paper studies the frequency stability of Chuanyu grid following a monopolar/bipole block of one of the four major large capacity UHVDC links (Xiang-Shang,Bin-Jin,Jin-Su,and Ya-Jiang).Then,the corresponding DC modulation,special protection system and coordination control strategies to maintain the frequency stability of Chuanyu power grid are proposed.Simulation results demonstrate the effectiveness of the proposed control strategies.关键词
异步联网/频率稳定/紧急功率支援/双侧频率调制/稳控切机Key words
asynchronous interconnection/frequency stability/emergency power support/bilateral frequency power modulation/special protection system分类
信息技术与安全科学引用本文复制引用
曾鉴,叶希,瞿小斌,金健可,文云峰,赵荣臻..异步互联格局下川渝送端电网的频率稳定特性与控制策略[J].电力建设,2018,39(1):68-75,8.基金项目
国家电网公司科技项目(SGSCJY00JHJS1600024) （SGSCJY00JHJS1600024）
国家自然科学基金项目(51707017) （51707017）
重庆市基础科学与前沿技术研究项目(cstc2017jcyjAX0422)Project supported by the Science and Technology Program of State Grid Corporation of China(SGSCJY00JHJS1600024) （cstc2017jcyjAX0422）
National Natural Science Foundation of China(51707017) （51707017）
Chongqing Research Program of Basic Research and Frontier Technology (cstc2017jcyjAX0422) （cstc2017jcyjAX0422）
