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Optimal Initialization and Starting Approach of Synchronous Condenser Integrated Power Grid

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Synchronous condensers(SCs)are generally used at the receiving-end stations of ultra-high-voltage direct current(UHVDC)transmission systems due to their strong reactive power support and flexible regulation of reactive power according to the interconnected grids operating conditions.In this paper,different starting control schemes of a SC integrated power grid are investigated providing four main contributions:1)The prin-ciple of reactive power support of the SC on the interconnected power grid is analytically studied,providing the establishment of mathematical models.2)Four different starting control schemes are developed for the initialization and SC integration,i.e.in Scheme 1,a preset initial falling speed is directly utilized without initialization;in Scheme 2,a black start sequential control approach with a static frequency converter(SFC)is proposed;in Scheme 3,PI/PD/PID controllers are respectively applied for the excitation device at the speed-falling stage;in Scheme 4,a pre-insertion approach of an energy absorption component with R/L/RL is utilized to suppress the surges at the SC integration instant.3)The dynamic behaviors of four different starting schemes at specific operating stages are evaluated.4)The success rate of SC integration is analyzed to evaluate starting control performance.Performance of the SC interconnected system with four different starting control schemes is evaluated in the time-domain simulation environment PSCAD/EMTDCTM.The results prove the superiority of the proposed starting control approach in Scheme 4.

Black startdynamic behaviorsexcitation sys-tempre-insertion of energy absorption componentsstarting control schemesstatic frequency converter(SFC)success rate of integrationsynchronous condenser(SC)

Puyu Wang、Xing Liu、Qingwen Mou、Tao Yuan、Tianming Gu、Hemin Yang、Xiao-Ping Zhang、Zhengrong Xiang、Chunyi Guo

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School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China

NARI Group Corporation/State Grid EPRI

NARI Technology Co.Ltd.,Nanjing 211106,China

School of Engineering,University of Birmingham Birmingham,B15 2TT,United Kingdom

State Key Laboratory of Alternate Electrics Power System with Renewable Energy Sources,North China Electric Powe University,Beijing 102206,China

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National Natural Science Foundation of ChinaNatura Science Foundation of Jiangsu Province BK20180478China Postdoctora Science FoundationState Key Laboratory o Alternate Electrical Power System with Renewable Energy SourcesEngineering and Physical Sciences Research Counci

518070912019M661846LAPS20016EP/N032888/1

2024

10.17775/CSEEJPES.2020.02570

中国电机工程学会电力与能源系统学报(英文版)
中国电机工程学会

中国电机工程学会电力与能源系统学报(英文版)

CSTPCDEI
ISSN：2096-0042
年,卷(期)：2024.10(1)
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