大容量海上风电接入海上油田群微电网暂态稳定性研究——以“海油观澜号”接入文昌油田群电网工程为例  

Transient stability of large-capacity offshore wind power connected to offshore oilfield microgrids:Taking the connection project of“CNOOC Guanlan”to the Wenchang Oilfield power grid as an example

作　　者：万光芬 魏澈 邱银锋 黄存 WAN Guangfen;WEI Che;QIU Yinfeng;HUANG Cun(CNOOC China Limited,Beijing 100010,China;CNOOC Research Institute Ltd.,Beijing 100028,China)

机构地区：[1]中海石油(中国)有限公司,北京100010 [2]中海油研究总院有限责任公司,北京100028

出　　处：《中国海上油气》2025年第1期211-220,共10页China Offshore Oil and Gas

基　　金：国家重点研发计划“海上多平台互联电力系统的可靠运行关键技术(编号:2018YFB0904800)”;中国海洋石油有限公司科技项目“海上风电场开发技术研究(编号:KJZX-2022-12-XNY-0100)”部分研究成果。

摘　　要：海上风电具有波动性和间歇性的特点,大容量接入海上油田群微电网易导致电网稳定性问题。以国内首个漂浮式风电“海油观澜号”接入文昌油田群电网工程为例,对该电力系统典型故障工况下暂态稳定性问题开展研究。采用PSCAD/EMTDC电磁暂态仿真软件搭建了“海油观澜号”接入文昌油田群电网全系统仿真模型,分析了风机切除、同步发电机组切除及海缆故障解列等3种典型故障工况下,系统暂态电压、频率、功角稳定性及系统振荡风险水平。结果表明,风机故障切除电网能够自适应稳定,可以此作为风机接入规模的工程选型依据;在同步发电机切机故障下,电网也可自适应稳定,该电网具备进一步优化减少热备用机组的潜力;海缆切除典型故障工况下,系统出现暂态频率失稳情况,可通过切负荷、加装储能等措施恢复稳定,同时加装储能措施可降低切负荷规模,利于平台平稳生产;各类故障工况下该项目无宽频振荡风险。研究成果为项目的安全稳定运行提供了支撑并为后续类似项目提供了参考。Offshore wind power is characterized by volatility and intermittency,and the large-scale integration into offshore oilfield microgrids can lead to grid stability issues.Taking the connection project of domestic first floating wind power platform“CNOOC Guanlan”to the Wenchang Oilfield microgrid as an example,this study investigated the transient stability issues under typical fault conditions of the power system.A full-system simulation model of“CNOOC Guanlan”integrated into the Wenchang Oilfield microgrid was built using the PSCAD/EMTDC electromagnetic transient simulation software.The analysis covered three typical fault scenarios:wind turbine disconnection,synchronous generator disconnection,and subsea cable fault isolation,examining system transient voltage,frequency,power angle stability,and oscillation risk levels.The results show that the grid can self-stabilize after a wind turbine failure,which can serve as a basis for engineering selection regarding the scale of wind turbine integration.Under synchronous generator disconnection faults,the grid also exhibits self-stabilization,indicating potential for further optimization to reduce thermal standby units.During subsea cable disconnection faults,the system experiences transient frequency instability,but stability can be restored through measures such as load shedding and energy storage installation.Additionally,installing energy storage can reduce the scale of load shedding,benefiting platform stable production.There is no broadband oscillation risk under various fault conditions.The research outcomes provide support for the safe and stable operation of the project and offer reference for subsequent similar projects.

关 键 词：海上风电 “海油观澜号” 海上油田微电网 暂态稳定性 风机切除 发电机组切除 海缆故障解列 系统振荡风险 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] TM743[电气工程—电力系统及自动化]