±800 kV直流高速开关(HSS)小直流电流开断特性研究OA
Study on Small Direct Current Interruption Characteristics of±800 kV High Speed Switch(HSS)
直流高速开关HSS是混合多端高压直流输电系统中第三站在线投退和故障隔离的关键设备,需要具备开断小直流电流的能力.文中基于电路方程和能量转换原理分析了HSS开断电流的工作原理,提出了一种HSS开断小电流的等效试验方法,搭建了HSS开断小电流的试验电路.针对HSS产品样机,进行了不同条件下HSS开断电流的试验,研究了开断的电流、恢复电压、灭弧室动触头的分闸速度、灭弧室的充气压力、喷口喉部直径的变化对HSS直流开断性能的影响.试验结果表明,电流幅值和分闸速度对HSS开断电流性能有明显的影响,恢复电压、灭弧室充气压力和喷口喉部直径的小幅变化对HSS开断电流的影响较小.通过建模和计算验证了试验数据的有效性.文中的研究结果为直流高速开关HSS的设计提供了依据.
High-speed DC switch(HSS)is the key equipment for the online onnection/disconnection and fault iso-lation of the third station in the hybrid multi-terminal HVDC transmission system,and needs to have the capability to interrupt small DC current.In this paper the operating principle of current interruption by the HSS is analyzed based on circuit equation and the principle of energy conversion.An equivalent test method for the HSS to interrupt small current is proposed,and a test circuit fot the HSS for small current interruption is set up.As for the HSS proto-type,the current interruption test of the HSS under different conditions is carried out,and the influence of the varia-tion of the interrupted current,recovery voltage,opening speed of the moving contact of the interupter,gas filling pressure of interrupter and the diameter of the nozzle throat on the DC interruption performance of the HSS is stud-ied.The test results show that the current amplitude and the opening speed have a significant impact on the current inerruption performance of the HSS,while the slight variation of recovery voltage,gas filling pressure of interrupter an throat diameter of nozzle have little influence on current interruption of the HSS.The effectiveness of the test da-ta is verified by modeling and calculation.The study results in this paper has provided a basis for the design of DC high-speed switch HSS.
张长虹;李一帆;房博一;黄瑜珑;许高明;高炳灿;吕金壮;陈兵;钟建英;魏建巍;黎卫国;孙英杰;杨旭;李明洋
中国南方电网有限责任公司超高压输电公司,广州 510663清华大学电机工程与应用电子技术系,北京 100084中国南方电网有限责任公司超高压输电公司,广州 510663清华大学电机工程与应用电子技术系,北京 100084中国南方电网有限责任公司超高压输电公司,广州 510663河南平高电气股份有限公司,河南 平顶山 467000中国南方电网有限责任公司超高压输电公司,广州 510663中国南方电网有限责任公司超高压输电公司,广州 510663平高集团有限公司,河南 平顶山 467000平高集团有限公司,河南 平顶山 467000中国南方电网有限责任公司超高压输电公司,广州 510663平高集团有限公司,河南 平顶山 467000中国南方电网有限责任公司超高压输电公司,广州 510663中国南方电网有限责任公司超高压输电公司,广州 510663
直流高速开关混合多端高压直流输电系统直流电流开断特性直流电弧电压样机试验
DC high speed switchhybrid multi-terminal UHVDC systemDC current interruption characteristicsDC arc voltageprototype test
《高压电器》 2026 (6)
39-49,11
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