计及制冷系统和过热保护的含高温超导电缆配电网可靠性评估方法  

Reliability evaluation method of distribution network with HTS cable considering cooling system and overheating protection

作　　者：吕忠麟 顾洁[1] 金之俭[1] LÜZhonglin;GU Jie;JIN Zhijian(Key Laboratory of Control of Power Transmission of Conversion,Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《电力自动化设备》2024年第1期64-72,共9页Electric Power Automation Equipment

基　　金：国家重点基础研究计划项目(2016YFB0900100);上海市科委科研计划资助项目(18DZ1100303)。

摘　　要：为适应高温超导电缆商业化运行需求,提出一种考虑不同应用模式下制冷系统和过热保护影响的含高温超导电缆的配电网可靠性评估方法。依据高温超导电缆制冷系统的工作原理、故障特性及过热保护装置的动作逻辑和自动重合规则,对高温超导电缆系统可靠性进行建模分析。考虑了低压联络和配电线路增效2种典型应用模式下高温超导电缆接入对配电网的可靠性影响,采用融入了计及高温超导电缆的新增故障模式的最小割集法求解配电网可靠性指标,实现含高温超导电缆的配电网可靠性评估。以某实际配电网为算例,通过仿真分析了制冷系统故障和过热保护对配电网不同可靠性指标的影响,并与传统的配电网改造方案进行对比,验证了所提方法的有效性。In order to meet the requirements of commercial operation of high temperature superconducting(HTS)cable,a reliability evaluation method of distribution network with HTS cable is proposed,which con⁃siders the influence of cooling system and overheating protection in different application modes.According to the working principle and fault characteristics of HTS cable cooling system,and the action logic and auto⁃matic reclosing rules of overheat protection device,the reliability of HTS cable system is modeled and ana⁃lyzed.Considering the influence of HTS cable access on the reliability of distribution network in two typical application modes of low-voltage tie-line connection and distribution efficiency improvement,the minimum cut set method integrated with the failure modes considering HTS cables is used to solve the reliability index of distribution system,then the reliability evaluation of distribution network including HTS cables is realized.Taking a practical distribution network as an example,the effects of cooling system fault and over⁃heating protection on different reliability indexes of distribution network are analyzed by simulation,and compared with conventional construction plan,the effectiveness of the proposed method is verified.

关 键 词：高温超导电缆 配电网 可靠性评估 最小割集法 制冷系统 过热保护 

分 类 号：TM732[电气工程—电力系统及自动化]