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1.国网上海市电力公司,上海市 200122
2.国网上海市电力公司检修公司,上海市 200063
周孝法(1973—),男,通信作者,博士,高级工程师,主要研究方向:高压直流输电。E-mail:jackiezhou_no.1@163.com
施红军(1976—),男,高级工程师,主要研究方向:交直流电网建设技术与管理。E-mail:13621926960@126.com
傅坚(1965—),男,硕士,高级工程师,主要研究方向:高压直流输电。E-mail:jfu_1@163.com
收稿日期:2019-10-07,
修回日期:2020-08-08,
网络出版日期:2020-10-22,
纸质出版日期:2020-12-10
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周孝法,施红军,傅坚等.直流输电换流阀晶闸管级阻尼与均压元件快速检测方法[J].电力系统自动化,2020,44(23):173-178.
ZHOU Xiaofa,SHI Hongjun,FU Jian,et al.Fast Inspection Method for Thyristor-level Damping and Voltage Balancing Components of DC Transmission Converter Valve[J].Automation of Electric Power Systems,2020,44(23):173-178.
周孝法,施红军,傅坚等.直流输电换流阀晶闸管级阻尼与均压元件快速检测方法[J].电力系统自动化,2020,44(23):173-178. DOI: 10.7500/AEPS20191007004.
ZHOU Xiaofa,SHI Hongjun,FU Jian,et al.Fast Inspection Method for Thyristor-level Damping and Voltage Balancing Components of DC Transmission Converter Valve[J].Automation of Electric Power Systems,2020,44(23):173-178. DOI: 10.7500/AEPS20191007004.
换流阀是直流输电的核心设备,需要定期对其晶闸管级阻尼与均压元件参数进行测量检测。由于换流阀的晶闸管数量众多,传统的检测方法效率低且存在一定安全隐患。文中提出了一种新的检测方法,可以在晶闸管级阻尼与均压元件不解开接线的情况下,在晶闸管级两端施加不同频率的电压信号,生成电路网络方程组,采用加权最小二乘法求解元件参数值。所提方法应用于3种技术路线换流阀的晶闸管级阻尼与均压元件参数的快速检测。仿真和现场实测结果验证了所提检测方法简单、高效且准确度高,能够满足工程应用要求。
The converter valve is the core equipment of DC transmission
and parameters of its thyristor-level damping and voltage balancing components need to be measured and tested regularly. Due to the large number of thyristors in the converter valve
traditional inspection methods are inefficient and have certain safety risks. In this paper
a new inspection method is proposed
which can apply voltage signals of different frequencies at both ends of the thyristor-level without disconnecting the wiring of the thyristor-level damping and voltage balancing components to generate a circuit network equation set
using the weighted least squares method to solve component parameters. The proposed method is applied to the rapid inspection of thyristor-level damping and voltage balancing component parameters of converter valves in three technical routes. The results of simulation and field measurement verify that the proposed inspection method is simple
efficient and highly accurate
and can meet engineering requirements.
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