Test of a 2 MVA medium voltage HTS fault current limiter module made of YBCO coated conductors
Test of a 2 MVA medium voltage HTS fault current limiter module made of YBCO coated conductors
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对由 YBCO 涂层导体制成的 2 MVA 中压 HTS 故障限流器模块进行测试
DOI：
10.1088/1742-6596/97/1/012091
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
A. Malozemoff
中科院分区：
文献类型：
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作者：
H. Kraemer;W. Schmidt;M. Wohlfart;Heinz;A. Otto;D. Verebelyi;U. Schoop;A. Malozemoff
建立了一种适用于中压应用的故障限流器模块，并成功地进行了测试。该模块对应于13 kv级配电电压等级的三相限幅器的一个相位。电阻式限制器由15个双线线圈组成，这些线圈由AMSC的344S超导体缠绕而成，这是一种商用的第二代YBCO带，由不锈钢层压板稳定。该模块的额定电流为300 Arms，额定电压为7.5 kV，对应的标称视在功率为2.25 MVA。低温恒温器配备了商业电流反馈，该模块在大气压下的液氮中运行。为了作为封闭系统长期运行，需要安装一个商用低温冷冻机冷头。该模块的功率测试和介电测试已在IPH Berlin （Institut "Pruffeld fur elektrische Hochleistungstechnik"）进行，预期电流为28 kA。在电压高达7.8 kV、故障保持时间约为50 ms的标准功率测试中，在不同的预期故障电流和不同的故障起始相角下，都观察到出色的限制性能。在第二个实验系列中，将一个适当的并联电抗器并联到限制器上。这种方法的好处是，限制电流可以调整到客户的需要，所需的高温超导电线的数量也可以明显减少。最后给出了该模块的设计和测试结果。
A fault current limiter module for medium voltage applications has been built and tested successfully. The module corresponds to one phase of a 3-phase limiter for the 13 kV-class distribution voltage level. The resistive type limiter consists of 15 bifilar coils wound from a total of 15 × 50 m of AMSC's 344S superconductors, a commercially available second generation YBCO tape stabilized by stainless steel laminates. The module has a rated current of 300 Arms and a rated voltage of 7.5 kV corresponding to a nominal apparent power of 2.25 MVA. The cryostat is equipped with commercial current feed-throughs and the module is operated in liquid nitrogen at atmospheric pressure. For long term operation as a closed system a commercial cryogenic refrigerator coldhead is installed. Power tests and dielectric tests of the module have been performed at the IPH Berlin (Institut "Pruffeld fur elektrische Hochleistungstechnik") up to prospective currents of 28 kA. In standard power tests at voltages up to 7.8 kV and fault hold times of about 50 ms an excellent limiting performance was observed both at various prospective fault currents and at different fault starting phase angles. Within a second experimental series, an appropriate shunt reactor was connected in parallel to the limiter. The benefit of this method is that the limited current can be adjusted to the customers needs and the required amount of HTS-wire can be also appreciably reduced. The setup of the module and the test results are reported.