项目来源

国家重点研发计划(NKRD)

项目主持人

张国民

项目受资助机构

中国电力科学研究院有限公司

项目编号

2018YFB0904400

立项年度

2018

立项时间

未公开

项目级别

国家级

研究期限

未知 / 未知

受资助金额

1907.00万元

学科

智能电网技术与装备

学科代码

未公开

基金类别

“智能电网技术与装备”重点专项

关键词

超导能源管道 ; 电力/液化天然气输送 ; 集约化布局 ; 在线状态监控 ; 安全防护 ; 满功率试验 ; Superconducting energy pipeline(SEP) ; electric power/LNG transmission ; intensive layout ; online monitoring ; safety defense ; full power test

参与者

陈盼盼；诸嘉慧；丘明；张宏杰；张会明；李振明；赵勇青；于国鹏；曹雨军

参与机构

中国科学院理化技术研究所；富通集团（天津）超导技术应用有限公司；上海电缆研究所有限公司；中国石化工程建设有限公司

项目标书摘要：超导能源管道利用液化天然气(LNG)冷却超导电缆，实现电力和LNG的混合输送，从而提高了能源输送密度和降低建设成本。课题主要开展了超导直流能源管道系统集成、运行控制与试验技术研究。依据超导能源管道本体、终端和低温制冷等工程设计和功能要求，确定了组件电气距离和安全防护空间，掌握了现场超导缆芯延放，终端接头制作、LNG 管路连接与密封等工艺技术，实现了能源管道样机系统集成和集约化布置。确定样机在线监测特征状态参量，明确信号特征选取、汇集和数据处理方式，提出系统运行控制和故障识别方法，构建了试验运行在线监控平台。通过多物理场耦合仿真分析，揭示出电力传输状态与LNG燃料输送状态变化的相互影响，结合工程应用提出能源管道调节控制方法，开展长距离应用场景下超导直流能源管道经济性分析。根据LNG混合工质故障、能源管道过电流和过电压情况，定义超导直流能源管道样机运行各种可能工况下的保护优先级，提出试验过程中的主动/被动安全防护措施和应急处理预案。建立满功率试验测试平台，开展了超导直流能源管道综合性能测试，结果表明：超导直流能源管道样机长度31.2 m,运行温区91.6-93.2K,LNG燃料输送流量119.9L/min,正负极电缆电压、电流分别为104.84kV/1018.72A和103.18kV/1007.69A,样机满负荷持续稳定运行达到24小时，验证了技术的有效性。

Application Abstract: The superconducting energy pipeline(SEP)uses liquefied natural gas(LNG)to cool the high temperature superconducting cable to realize the hybrid transmission of electric power and LNG,thereby increasing the energy transmission density and reducing the construction cost.The integration,operation control and test technologies lay an important theoretical and practical foundation for the application of SEP.According to the engineering design requirements of SEP core,terminals and cryogenic refrigeration,the electrical distance and safety protection space are defined,and the technologies of on-site superconducting cable placement,joint processing,LNG pipeline connection and sealing are given.An intensive layout of the SEP prototype is achieved.Based on the online monitoring feature quantity,the signal feature selection,collection and data processing are clarified,system operation control and fault identification methods are proposed,and the test operation online monitoring platform is constructed.Through multi-physics coupling simulation analysis,the interaction between power transmission and LNG transportation is revealed and the energy pipeline regulation and control methods are proposed.The economic analysis of SEP in long-distance application is carried out.According to fault situations such as LNG failure,overcurrent and overvoltage of SEP,the classification methods and operating protection priority are identified to give an emergency treatment plan for the SEP prototype.A test platform for full power testing is built and the comprehensive performance tests of SEP are carried out.Onsite experimental results show that,the length of SEP prototype is 31.2 m,operating temperature range is 91.6 to 93.2 K,LNG transportation flow is 119.9 L/min,the operation voltage and current of the positive SEP prototype are 104.84 kV and 1018.72 A respectively,and those of the negative SEP prototype is 103.18 kV and 1007.69 A.The prototype has run continuously up to 24 hours at the full load.The effectiveness of the hybrid transmission of superconducting electricity and fuels has been verified.

项目受资助省

湖北省