Measurements of Breakdown Voltage Characteristics of Medium Voltage Vacuum Circuit Breaker After Current Interruption

IF 3.8 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Delivery Pub Date : 2025-02-13 DOI:10.1109/TPWRD.2025.3541301

Szymon Stoczko;Marcin Szewczyk;Waldemar Chmielak;Radosław Szreder;Zbigniew Pochanke

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Abstract

We present a test circuit for measuring the breakdown voltage characteristics of a vacuum circuit breaker after current interruption process. The test circuit combines the high current part from the synthetic test circuit as per IEC Std. 62271-101 with the so-called Rabus high voltage part. The high current part reproduces the current phase before voltage build-up occurring after zero current crossing, then the Rabus high voltage part provides voltage breakdowns constituting breakdown voltage characteristics. The high current part can be adjusted to represent the actual current conditions which influences the physical conditions of the contact system upon which the interruption process is highly dependent. To illustrate the measuring system and the measuring procedure, the measurements of the breakdown voltages are reported for a commercial 12 kV/1250 A/31.5 kA vacuum circuit breaker. The breakdown voltages are measured primarily as a function of time and then converted via a contact travel curve into the vacuum interrupter contact gap function. This allows the results to be converted back and applied to a breaker with the same characteristics of the vacuum interrupter unit operating in similar current conditions, but with different mechanical characteristics of the breaker-specific actuator than the one used in testing.

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电流中断后中压真空断路器击穿电压特性的测量

介绍了一种测量真空断路器断流后击穿电压特性的测试电路。测试电路结合了来自IEC标准62271-101的合成测试电路的高电流部分和所谓的Rabus高压部分。高电流部分再现零电流过线后电压积累前的电流相位，然后Rabus高电压部分提供构成击穿电压特性的电压击穿。大电流部分可以调整，以表示实际的电流条件，它影响着中断过程高度依赖的触点系统的物理条件。为了说明测量系统和测量程序，报告了商用12kv / 1250a /31.5 kA真空断路器击穿电压的测量。击穿电压主要作为时间的函数来测量，然后通过触点行程曲线转换成真空灭弧触点间隙函数。这允许将结果转换回来并应用于在相似电流条件下工作的真空断路器单元具有相同特性的断路器，但与测试中使用的断路器特定执行器具有不同的机械特性。

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来源期刊

IEEE Transactions on Power Delivery 工程技术-工程：电子与电气

CiteScore

9.00

自引率

13.60%

发文量

513

审稿时长

6 months

期刊介绍： The scope of the Society embraces planning, research, development, design, application, construction, installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy. It includes the developing of engineering standards, the providing of information and instruction to the public and to legislators, as well as technical scientific, literary, educational and other activities that contribute to the electric power discipline or utilize the techniques or products within this discipline.