超导直流能源管道的基础研究
项目来源
国（略）研（略）(（略）D（略）
项目主持人
张（略）
项目受资助机构
中（略）科（略）院（略）司
立项年度
2（略）
立项时间
未（略）
项目编号
2（略） YFB0904405
项目级别
国（略）
研究期限
未（略） （略）
受资助金额
0（略）万（略）
学科
智（略）技（略）备
学科代码
未（略）
基金类别
“智（略）技（略）备”重点专项
关键词
超（略）管（略） （略）液（略）气（略）;（略）化（略）;（略）状（略） （略）全（略）;（略）率（略）;（略）p（略）o（略）c（略）g（略）e（略） （略）e（略）e（略）P（略） （略）c（略）c（略）w（略）L（略）t（略）s（略）s（略） （略）n（略）s（略） （略）o（略）;（略）l（略） （略）i（略）i（略）;（略）f（略） （略）e（略） （略）u（略）p（略）r（略）s（略）
参与者
陈（略）诸（略）丘（略）宏（略）会（略）振（略）勇（略）国（略）雨（略）
参与机构
中（略）院（略）术（略）；（略）团（略））（略）术（略）限（略）上（略）研（略）限（略）中（略）工（略）有（略）
项目标书摘要：超导（略）(LNG)冷却超导（略）的混合输送，从而提（略）建设成本。课题主要（略）系统集成、运行控制（略）导能源管道本体、终（略）和功能要求，确定了（略）空间，掌握了现场超（略）作、LNG 管路连（略）现了能源管道样机系（略）定样机在线监测特征（略）选取、汇集和数据处（略）制和故障识别方法，（略）平台。通过多物理场（略）力传输状态与LNG（略）影响，结合工程应用（略）法，开展长距离应用（略）经济性分析。根据L（略）管道过电流和过电压（略）管道样机运行各种可（略）提出试验过程中的主（略）应急处理预案。建立（略）展了超导直流能源管（略）明：超导直流能源管（略）,运行温区91.6（略）料输送流量119.（略）缆电压、电流分别为（略）18.72A和10（略）.69A,样机满负（略）小时，验证了技术的（略）
Applicati（略）: The sup（略）g energy （略）P)uses li（略）ural gas(（略） the high（略）e superco（略）ble to re（略）ybrid tra（略）f electri（略） LNG,ther（略）ing the e（略）mission d（略）reducing （略）ction cos（略）ration,op（略）trol and （略）logies la（略）ant theor（略）practical（略） for the （略） of SEP.A（略） the engi（略）ign requi（略）SEP core,（略）nd cryoge（略）ration,th（略）l distanc（略）y protect（略）re define（略）echnologi（略）te superc（略）able plac（略） processi（略）line conn（略）sealing a（略） intensiv（略） the SEP （略）s achieve（略）the onlin（略）g feature（略）he signal（略）lection,c（略）nd data p（略）re clarif（略）operation（略）d fault i（略）on method（略）sed,and t（略）ration on（略）ring plat（略）structed.（略）ti-physic（略）simulatio（略）the inter（略）een power（略）on and LN（略）ation is （略）d the ene（略）e regulat（略）trol meth（略）posed.The（略）nalysis o（略）ng-distan（略）ion is ca（略）ccording （略）tuations （略） failure,（略） and over（略）SEP,the c（略）on method（略）ting prot（略）rity are （略）to give a（略） treatmen（略）the SEP p（略）test plat（略）ll power （略）built and（略）hensive p（略）tests of （略）ried out.（略）rimental （略）w that,th（略） SEP prot（略）.2 m,oper（略）rature ra（略） to 93.2 （略）portation（略）9.9 L/min（略）ion volta（略）ent of th（略）SEP proto（略）4.84 kV a（略）A respect（略）hose of t（略） SEP prot（略）3.18 kV a（略）A.The pro（略）run conti（略）to 24 hou（略）ull load.（略）veness of（略） transmis（略）erconduct（略）city and （略）een verif（略）
项目受资助省
湖（略）
1.超导直流能源管道的基础研究最终报告(Acceptance report of Basic Research on Superconducting DC Energy Pipeline)
- 关键词：
- 超导能源管道、混合工质、固液相平衡、超导电缆、电力/LNG输送、电—热—流耦合、安全防御、满功率试验、Superconducting DC energy pipeline(SDCEP)、mixture、solid-liquid phase balance、superconducting cable、electric power/LNG transmission、electro-thermal-flow coupling、safety defense、full power test
- 丘明；邱清泉；赵延兴；朱红亮；韩云武；张宏杰；
- 《中国电力科学研究院有限公司；中国科学院电工研究所；中国科学院理化技术研究所；富通集团超导技术应用有限公司；上海电缆研究所有限公司；》
- 2021年
- 报告
针对电力/LNG一体化安全、高效输送需求，提出了LNG燃料冷却、绝缘介质保护的能源管道原理结构，分析了电—热—流耦合机理，提出了稳定性判据，结合能效分析掌握了协同控制和综合调度方法；实验揭示了网侧短路和绝缘击穿故障所产生的能量传递规律及管内压力波传播过程，提出了安全防御策略，通过原理样机实验验证了结构的合理性。提出混合工质固液平衡预测新模型，预测精度比溶液模型高10%以上，揭示凝固变化规律，发展了凝固点调控新方法，将凝固点由90K降低至61K;构建了高精度低温流体物性和绝缘测量装置，获得LNG组元的固液平衡、黏度、流动传热、击穿和闪络等数据。揭示了混合工质温区超导材料性能，阐明绝缘材料低温介电参数、空间电荷输运和击穿特性的内在关联机制，提出了多特性协同响应的分子结构模型；优化了载流导体、低温绝缘和应力锥结构；掌握了载流导体绕制和绝缘绕包工艺，完成了电缆本体制造；揭示了大温度梯度下绝缘材料的失效机理，提出了终端电气绝缘、电流引线和杜瓦优化设计方法，完成了能源管道终端研制。提出能源管道集约化布置方案，掌握了现场缆芯延放、接头处理等过程工艺和质量控制技术；建立直流耐压、满功率测试平台和远程在线监控系统；研制了国内外首台套30 m/±100 kV/1 kA超导直流能源管道样机，完成满功率运行测试，验证了技术可行性。In response to the requirements of safe and efficient transmission,the principle structure of high temperature superconducting(HTS)energy pipeline is proposed.The mechanism of electro-thermal-flow coupling is analyzed,and the stability criterion is put forward.The coordinated control and dispatching methods are discussed in combination with energy efficiency analysis.The experiment reveals the energy transfer processing caused by short-circuit and insulation breakdown faults,the gasification near the freezing point and the pressure wave propagation in the pipeline.A security defense strategy is proposed.A new model for predicting the solid-liquid balance of low temperature mixture is proposed,which improves the prediction accuracy by more than 10%compared with the traditional liquid model,reveals the solidification changes,and develops a new method of freezing point control to reduce the freezing point from 90K to 61K.The high-precision cryogenic fluid and insulation property measurement device are constructed to obtain the solid-liquid balance,viscosity,flow heat transfer,breakdown and flashover data of LNG.The working performance of superconducting materials in the mixture is obtained.The internal correlation mechanisms of low-temperature dielectric,space charge transport and breakdown characteristics of HTS materials are clarified and a molecular structure model having a synergistic response is proposed.The optimized design of current conductor,low-temperature insulation and stress cone are achieved and the technologies of conductor winding and insulation wrapping are explored either.Considering the requirements of terminal insulation,heat leakage and sealing,the insulation failure mechanism is clarified.And the optimal designs of terminal electrical insulation,current lead and dewar are carried out,combined with safety protection strategies.Finally,the superconducting energy pipeline prototype including the conductors and terminals are manufactured.Moreover,this paper proposes an intensive layout of energy pipeline for the test site,gives the technologies such as on-site cable placement,joint processing and establishes the DC withstand voltage platform,full power test platform and a remote online monitoring system.The first set of 30 m/±100 kV/1 kA superconducting DC energy pipeline prototype in the world has been developed,the full power operation test has been completed which verified the technical feasibility.
...2.大温度梯度下直流绝缘特性与终端技术最终报告(Dc insulation characteristics and terminal technology under high temperature gradients-Technical report)
- 关键词：
- 终端恒温器、电流引线、低温绝缘、绝缘材料、Terminal thermostat、Current lead、Cryogenic insulation、Insulation materials
- 韩云武；
- 《上海电缆研究所有限公司；》
- 2021年
- 报告
根据需求，开发一系列测试设备和研究平台，研究分析不同温度下的多种绝缘样品放电特性进行测试，得到温度对绝缘材料局部放电的影响规律，进而阐明了高电压终端绝缘材料在低温下的局部放电和绝缘击穿特性。研究分析低温及大温度梯度下绝缘机械性能、空间电荷特性和界面闪络特性等，阐明了低温及温度梯度下复合绝缘界面的空间电荷演化及绝缘影响机制，掌握了高电压电缆终端绝缘空间电荷测量方法。针对电流引线多物理场交杂运行工况，通过算法开发、联合仿真和实验验证，从制作材料，几何尺寸及形状、运行温度等多个维度，深入研究电流引线的电磁—热耦合特性，提出了一种终端电流引线最小化漏热设计方法。设计了电-LNG隔离的安全防爆终端恒温器；完成多目标参数的电流引线绝缘优化设计、终端热胀冷缩缓冲设计和能源管道终端的制造和集成；研究了终端抽空工艺和真空维护技术。掌握超导直流能源管道终端制造关键技术。开发一些列装备研究了能源管道终真空绝热性能、电流引线漏热及能耗性能、终端电气性能和机械性能评估测试技术，完成终端样机现场集成测试。全面掌握了超导直流能源管道终端的测试评估技术。通过本项目的实施，课题组掌握了超导直流能源管道终端材料性能研究、产品开发、和产品性能评估等一系列技术，填补超导输电领域部分研究空白，开发多项新设计和新技术为实现大长度能源管道应用及相关领域的技术发展奠定了研究基础。According to the project requirements,a series of test equipment and research platforms are developed to study and analyze the discharge characteristics of different insulation samples at different temperatures.We obtain the influence law of temperature on partial discharge of insulation materials,and then clarify the partial discharge and insulation breakdown characteristics of insulation materials for high voltage termination at low temperature.The mechanical properties,space charge characteristics and interface flashover characteristics of insulation under low temperature and large temperature gradient are studied and analyzed.We have developed some equipments,studied the evaluation and test technology of final vacuum insulation performance of energy pipeline,heat leakage and energy consumption performance of current lead,electrical performance and mechanical performance of termination,and completed the field integration test of termination prototype.We fully mastered the test and evaluation technology of superconducting DC energy pipeline termination.Through the implementation of this project,We has mastered a series of technologies such as material performance research,product development and product performance evaluation of superconducting DC energy pipeline termination。Some of our research filled the gaps in the field of superconducting power transmission.We have developed a number of new designs and technologies,which has laid a research foundation for the application of large-length energy pipeline and the technical development in related fields.
...3.混合工质温区超导和绝缘材料特性与本体技术最终报告(Properties and technologies of superconductors and insulating materials for cables at the temperature of mixed-refrigerator)
- 关键词：
- 超导材料、绝缘材料、本体技术、superconductors、insulating materials、cable technology
- 朱红亮；杨天慧；李忠磊；张东；皮伟；孙宇光；
- 《富通集团超导技术应用有限公司；天津大学；中国科学院电工研究所；华北电力大学；清华大学；》
- 2021年
- 报告
本课题的主要目标是完成超导电力—液化天然气(LNG)一体化输送管道中30m、1kA、100kV超导电缆本体的设计与制造。与常规电缆相比，超导电缆具有传输容量大、损耗低的性能优势。本课题研制的超导电缆本体作为能源一体化输送管道的核心部件，用于能源输送管道中电力输送。超导材料、导体结构、混合工质温区绝缘材料及电气绝缘结构是决定超导电缆本体性能的基本因素。用于能源管道的超导电缆与目前常见的超导电缆在结构上有较大差别，其绕制技术也面临新的挑战。本课题将针对电力—液化天然气一体化能源输送管道的应用要求，完成满足项目指南的所有技术要求的直流超导电缆本体样机的制造和测试。The main goal of this project is to complete the design and manufacture of 30m/1kA/100kV superconducting cable body in the integrated transmission pipeline of superconducting power liquefied natural gas(LNG).Compared with conventional cables,superconducting cables have the advantages of large transmission capacity and low loss.As the core part of the energy integrated transmission pipeline,the superconducting cable body developed in this project is used for power transmission in the energy transmission pipeline.Superconducting material,conductor structure,insulating material in temperature zone of mixed working medium and electrical insulation structure are the basic factors that determine the performance of superconducting cable.The structure of superconducting cable used in energy pipeline is quite different from that of commonsuperconducting cable,and its winding technology is also facing new challenges.According to the application requirements of the power LNG integrated energy transmission pipeline,this project will complete the manufacture and test of the DC superconducting cable prototype which meets all the technical requirements of the project guide.
...4.超导直流能源管道原理结构和能源输送特性及安全性最终报告(Acceptance Report on the Principle Structure,Transport Characteristic and Safety of Superconducting DC Energy Pipeline)
- 关键词：
- 超导直流能源管道、原理结构、安全性、经济性、协同控制、Superconducting DC Energy Pipeline、Principle Structure、Safety、Economic、Collaborative Control
- 邱清泉；蒋晓华；谭宏博；靖立伟；陈建辉；周志浩；滕玉平；许熙；
- 《中国科学院电工研究所；清华大学；西安交通大学；》
- 2021年
- 报告
研究了能源管道的电热流耦合机制，构建了系统仿真软件平台，可以实现超导电缆和能源管道的电磁热流综合物理场仿真和系统优化，协同控制和综合调度方法的仿真，为能源管道的设计和运行控制提供依据。研究了能源管道在网侧短路、内部绝缘击穿和低温燃料及燃气泄漏情况下的故障演化机制，建立了相应的试验平台，为能源管道总体设计和工程设计提供了基础支撑。提出了适用于液化天然气温区的液氮氟碳混合液体绝缘介质和LNG燃料冷却、绝缘介质保护超导直流能源管道新型原理结构；研制出10kV原理验证样机并进行了载流、耐压和燃料输送能力测试，实现了电/LNG的一体化输送。完成了30 m、±100 kV/1 kA超导直流能源管道样机总体方案设计，提出了超导电缆本体、双通道管件、能源管道终端、制冷与循环系统和高压直流电源系统的设计准则，并完成了双通道管件和接口的制造、现场集成和测试。The mechanism concerning the coupling of electric-thermal-fluid in an energy pipeline is investigated and a simulation platform for such pipelines is then developed which possesses four main functions including the simulation of electromagnetic-thermal-fluid multi-physics and the optimization for superconducting cables and energy pipelines,as well as the cooperative control and integrated scheduling method for the pipeline system.Research findings of such a mechanism and such a simulation platform can lay the foundations for the design and operation of energy pipelines.The patterns associated with several kinds of fault evolution for energy pipelines is probed into.These types of faults contain network-side short circuit,insulation breakdown inside the pipelines and the leakage of cryogenic fuels or gases.A corresponding test platform is established,which provides essential supports for the overall design and engineering design of energy pipelines.A dielectric liquid mixture(DLM)in the liquified natural gas(LNG)temperature range is put forward for pipeline protection,which is based on nitrogen and fluorocarbon.Afterwards,an effective structure of superconducting DC energy pipeline cooled by LNG and protected by DLM is proposed and a 10 kV prototype is developed for principle-verification.Results of the current carrying,voltage withstand and fuel transportation capacity tests indicate that the integrated transportation of electricity and LNG is realized.The overall scheme design of the 30 m,± 100 kV/1 kA superconducting DC energy pipeline prototype is proposed.The design criteria of superconducting cable body,dual channel pipe fittings,energy pipeline terminal,refrigeration and circulation system and high-voltage DC power supply system are put forward.Finally,the manufacturing,integration and testing of dual channel pipe fittings and interfaces are accomplished.
...5.超导直流能源管道的基础研究2019年度技术报告(Technical Report of2019on Basic Research of Superconducting DC Energy Pipeline)
- 关键词：
- 超导电缆、能源管道、LNG混合工质、Superconducting Cable、Energy Pipeline、LNG Mixture
- 李振明；邱清泉；赵延兴；叶新羽；韩云武；
- 《中国电力科学研究院有限公司；中国科学院电工研究所；中国科学院理化技术研究所；富通集团超导技术应用有限公司；上海电缆研究所有限公司；》
- 2019年
- 报告
围绕混合工质、电力/LNG一体化输送稳定性、故障演化三方面的科学问题及系统设计技术，以理论创新与技术突破为目标，主要开展的研究工作为：在超导直流能源管道原理结构和能源输送特性方面，完成了10kV/1kA能源管道原理验证样机研制与试验、电力/LNG一体化输送多物理场耦合仿真分析模块设计与验证、能源管道安全性评估实验平台设计、30m/±100kV/1kA能源管道样机总体方案设计；在LNG 混合工质的固液相平衡及其传热、流动和绝缘特性方面，建立了适用于甲烷体系的固液相平衡模型并预测了甲烷、乙烷、丙烷多元体系固液转变温度，研制固液平衡实验平台并准确测量了固液转变温度及热焓，建立了混合工质绝缘特性实验装置；在混合工质温区超导和绝缘材料特性与本体技术方面，揭示了混合工质温区超导材料电磁特性，阐明了低温绝缘界面空间电荷演化及绝缘影响机制，完成了100kV/1kA超导电缆本体、绝缘厚度和绕包方式的优化设计，给出了应力锥主绝缘和增绕绝缘设计参数；在大温度梯度下直流绝缘特性与终端技术方面，获得了PPLP的绝缘特性参数及环氧树脂老化特性，揭示了低温对空间电荷的抑制作用机理，分析了高压套管内液氮介质绝缘特性，完成了终端电流引线材料选型、应力锥结构设计及应力—电场仿真分析；在超导直流能源管道系统集成、运行控制与试验技术方面，完成了满功率测试电气试验平台建设方案、运行状态在线监控方案及试验场地布局方案设计。 Centered on three scientific issues about LNG mixture,dynamic stability of integrated transport and fault evolution in HTS DC energy pipeline,foucsing on theoretical innovation and technological breakthrough,the research have been done as follows.As for the principle structure,transmission characteristics and safety of superconducting DC energy pipeline,10m,10kV/1kA superconducting DC energy pipeline prototype has been fabricated and tested.The simulated model of the electric power transmission with LNG has been designed and verified.The experimental setup for evaluating the safety of superconducting DC energy pipeline has been designed.The overall design of 30m,±100kV/1kA prototype has been provided.As for the solid-liquid phase balance,heat transfer,flow,and insulation characteristics of LNG mixture,a solid-liquid phase balance model has been proposed to predict the solid-liquid conversion temperature of methane/ethane/propane.Experimental setups of solid-liquid phase balance and low-temperature insulation characteristics of LNG mixture have been established.In terms of the properties of superconductors and insulating materials for cables technologies at the temperature of LNG mixture,the electromagnetic properties of superconducting materials has been revealed.The spatial charge evolution and insulation influence mechanism of the low-temperature insulation interface has been clarified.The design of 100 kV/1 kA superconducting cable core was carried out.Meanwhile,the optimal design of the insulation thickness and wrapping method of the superconducting cable core was realized,and the design parameters of insulation parameters for the stress cone was performed.In terms of the insulation characteristics under DC and the terminal design,the insulation characteristics of PPLP is obtained.The aging characteristics of epoxy resin is acquired.The repression of space discharge under low temperature is revealed.The research of flashover characteristics under high voltage and LN2 environment of bushing and influencing factors of liquid nitrogen breakdown is carried out.The material of current leading,design of stress cone,stress-electric field simulation analysis are completed.For the systematic integration,operational control and test of superconducting DC energy pipeline,the full power testing setup,operational status online monitoring setup,and test site layout have been desgined.
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