摘要
由于海上采油平台网络特殊供电形式和复杂拓扑结构,使得海缆故障定位成为亟须解决的关键难题。针对单极输电的海上采油平台的新模式,研究一种基于电极-海缆阻抗谱的海上采油平台海缆故障定位方法。首先,根据传输线理论构建故障电缆的频域模型,并基于电极-海水研究了电极-海缆供电参数特性与频变机理,实现电极-海缆阻抗的建模。然后,通过故障后的电极-海缆阻抗网络建模得到输入阻抗,提取与故障距离与故障阻抗相关的定位函数,实现故障定位。最后,通过仿真验证该方法的准确性和有效性,结果表明该方法创新性地考虑了电极-海水回路的阻抗模型,提高了海缆定位的精度。
Due to the unique power supply forms and complex topological structures of offshore oil drilling platforms,submarine cable fault localization has become a critical challenge that urgently needs to be addressed.Aiming at the new mode of offshore oil production platform with uni-polar transmission,a cable fault localization method for submarine cables on offshore oil drilling platforms based on electrode-submarine cable impedance spectrum is explored.Firstly,the frequency domain model of the fault cable is constructed according to the transmission line theory,and the characteristics and frequency-dependent mechanism of the electrode-submarine cable power supply parameters are studied based on the electrode-seawater,and the modeling of the electrode-submarine cable impedance is realized.Then,the input impedance is obtained by modeling the electrode-submarine cable impedance network after the fault,and the localization function related to the fault distance and fault impedance is extracted to realize the fault localization.Finally,the accuracy and effectiveness of this method are validated through simulation.The results show that this method innovatively considers the impedance model of the electrodeseawater circuit and improves the precision of submarine cable fault localization.
作者
刘俊
陈卉
张尔佳
余墨多
LIU Jun;CHEN Hui;ZHANG Erjia;YU Moduo(State Grid Electric Power Research Institute Co.,Ltd.(State Grid Nanrui Technology Co.,Ltd.),Nanjing 210000,China;Key Laboratory of Power Transmission and Power Conversion Control of Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《供用电》
北大核心
2025年第9期48-54,共7页
Distribution & Utilization
基金
国家电网有限公司科技项目“陆上电网与海上采油平台间协同运行技术研究”(5400-202113399A-0-0-00)。
关键词
电极-海缆
阻抗谱
频域
故障定位
海上采油平台
electrode-submarine cable
impedance spectrum
frequency domain
fault localization
offshore oil drilling platform
