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适用于稳控装置的逆变站送出交流线路故障跳闸判据
作者:
作者单位:

1.华北电力大学电气与电子工程学院,北京市102206;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

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基金项目:

国家电网公司科技项目(系统保护控制系统级实验验证基础能力建设相关技术研究,SGSDDK00KJJS1700315)。


Fault-induced Tripping Criteria of Outgoing AC Transmission Lines in Inverter Station Applied by Stability Control Device
Author:
Affiliation:

1.School of Electrical and Electronic Engineering, North China Electric Power University,Beijing102206,China;2.NARI Group Corporation (State Grid Electric Power Research Institute),Nanjing211106,China

Fund Project:

This work is supported by State Grid Corporation of China (Research on Related Technologies of System Protection and System Level Experimental Verification, No. SGSDDK00KJJS1700315).

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    摘要:

    直流换相失败给逆变站近区交流电网的故障特征带来了显著变化。理论分析了直流换相失败对逆变站送出交流故障线路的电流有效值的影响规律,指出了稳控装置所用的传统故障跳闸判据存在不适应场景的原因;进一步基于实时数字仿真平台(RTDS),验证了理论分析所述的不适应场景;通过分析直流系统短路后的交流等值网络,结合故障时电流序分量和相间余弦电压等电气量特征,提出了适应逆变站送出交流线路的故障跳闸新判据;最后,RTDS仿真结果验证了新判据的有效性和可靠性。

    Abstract:

    DC commutation failure brings significant changes to the fault characteristics of the AC grid near the inverter station. The influence of DC commutation failure on the root mean square (RMS) current of the AC fault line in the inverter station is analyzed theoretically. The deficiency of traditional criteria applied by stability control devices is pointed out. Based on the real-time digital simulation platform (RTDS), the inadaptable scenarios described in the theoretical analysis are verified. By analyzing the AC equivalent network after the short circuit of DC system, new criteria for identifying fault-induced tripping based on current sequence component and interphase cosine voltage are proposed. RTDS simulation results show the validity and reliability of the new criteria.

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引用本文

徐海波,方勇杰,崔晓丹.适用于稳控装置的逆变站送出交流线路故障跳闸判据[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190920006.
XU Haibo,FANG Yongjie,CUI Xiaodan.Fault-induced Tripping Criteria of Outgoing AC Transmission Lines in Inverter Station Applied by Stability Control Device[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190920006.

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历史
  • 收稿日期:2019-09-20
  • 最后修改日期:2020-03-18
  • 录用日期:2020-01-06
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