特高压交流试验电源特点探讨及比较

特高压输电技术的试验研究以及特高压设备的绝缘考核对交流试验电源提出了更高的要求。通过对试验变压器、串联谐振设备以及电力变压器等三种可供选择的交流试验电源各自的技术经济特点进行分析比较，指出其不同的适用范围。试验变压器适用于相对较小容量试品的短时高电压试验；串联谐振设备适用于容性试品的单相高电压试验，并能满足相对较大容量要求；电力变压器作为高电压试验设备，在结构和容量上并不经济，但作为交流试验电源，却具有较强的适应能力。因此，当试验变压器和串联谐振设备这两种常规方案不能满足特高压交流试验电源的基本要求时，应考虑电力变压器方案。

Discussion and Comparison of Characteristics of AC-testing Supply Used for UHVAC

Testing researches for UHVAC transmission technologies and dielectric assess of UHVAC equipments raise higher requests for AC-testing supplies. By means of discussing and comparing the respective technology-economical characteristics of three AC-testing supplies that can be selected, the respective applied scopes of them are indicated. Testing-transformers are applicable to short-time high voltage tests of loads, which have relative smaller capacity. Series resonance testing devices are applicable to one-phase high voltage tests of capacitance loads, and can meet relative bigger capacity. Power transformers are not economy in structure and capacity as high voltage testing devices, but they have better adaptability as AC testing supplies. So the power transformer scheme should be considered when the two routine schemes of testing-transformers and series resonance testing devices can not satisfy the basic requirements of AC-testing supplies for UHVAC application.