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1.中国南方电网电力调度控制中心,广东省广州市 510663
2.中国南方电网有限责任公司超高压输电公司电力科研院,广东省广州市 510623
3.南方电网科学研究院有限责任公司,广东省广州市 510663
Received:26 June 2024,
Revised:2024-10-23,
Published Online:24 June 2025,
Published:10 August 2025
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谢惠藩,武霁阳,彭光强等.背靠背常规直流断流机理分析及优化策略[J].电力系统自动化,2025,49(15):178-186.
XIE Huifan,WU Jiyang,PENG Guangqiang,et al.Analysis and Optimization Measures of Current Breaking Mechanism for Back-to-back Conventional HVDC[J].Automation of Electric Power Systems,2025,49(15):178-186.
谢惠藩,武霁阳,彭光强等.背靠背常规直流断流机理分析及优化策略[J].电力系统自动化,2025,49(15):178-186. DOI: 10.7500/AEPS20240626007.
XIE Huifan,WU Jiyang,PENG Guangqiang,et al.Analysis and Optimization Measures of Current Breaking Mechanism for Back-to-back Conventional HVDC[J].Automation of Electric Power Systems,2025,49(15):178-186. DOI: 10.7500/AEPS20240626007.
针对2023年8月19日鲁西背靠背常规直流工程因区外交流故障引起直流电流长期断流导致双极闭锁事件,分析了背靠背常规直流工程的电流建立机理,阐述了鲁西背靠背常规直流工程直流电流建立不成功的原因,提出了低电流场景下阀控补发脉冲优化策略,实时数字仿真(RTDS)平台的仿真结果验证了其有效性,并已成功在现场实施应用。实际应用结果表明,所提优化策略有效消除了由区外交流故障引发的鲁西背靠背常规直流工程直流电流长时间断流和双极闭锁风险,显著提升了背靠背常规直流工程运行的可靠性和稳定性。
Regarding the incident on August 19th
2023
where the Luxi back-to-back conventional high voltage direct current (HVDC) project of China experienced a prolonged DC current breaking due to an external AC fault
causing a bipolar block
the current establishment mechanism of the back-to-back conventional HVDC project is analyzed. The reasons for the unsuccessful establishment of DC current in the Luxi back-to-back conventional HVDC project are identified. The valved-controlled compensated pulse optimization strategy in low DC current scenarios is proposed. The simulation results of the real-time digital simulator (RTDS) platform fully verified its effectiveness and the measures are successfully implemented on site. The practical application results show that the proposed optimization strategy effectively eliminates the prolonged DC current breaking in the Luxi back-to-back conventional HVDC project caused by the external AC fault and further prevents the bipolar block risk
significantly improving the operational reliability and stability of the back-to-back conventional HVDC project.
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