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首页> 外文期刊>Power Engineering Review, IEEE >Cold Start Performance of Transformers Filled with High Molecular Weight Hydrocarbon Liquid
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Cold Start Performance of Transformers Filled with High Molecular Weight Hydrocarbon Liquid

机译：充有高分子量碳氢化合物液体的变压器的冷启动性能

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Two high loss 167 kVA pole type transformers were filled with conventional mineral oil and cold start tested at -30??C under full load. The two units were subsequently drained, retrofilled with a high molecular weight hydrocarbon (HMWH) fluid, and then retested at -30??C. The units were identical, except one used corrugated fins for cooling and the other used radiator panels. Thermocouple temperature readings indicated that the units were successfully cold-started with both types of fluid. When filled with HMWH fluid, maximum winding temperatures of 58??C and 52??C were recorded for the finned and radiator transformers respectively. These winding temperatures are well below the 105??C maximum continuous rating of the insulation (65??C rise over a 40??C ambient). No thermal runaway occurred. Indeed, the results indicate that HMWH filled transformers can tolerate substantial overloads during both startup and continuous operation at low ambient temperatures.
机译：用常规矿物油填充两个高损耗167 kVA极型变压器，并在-30℃满载条件下进行冷启动测试。随后将这两个单元排干，再填充高分子量烃（HMWH）流体，然后在-30℃下重新测试。除了一个用于冷却的波纹状散热片和另一个用于散热器的散热片以外，这些单元是相同的。热电偶温度读数表明，两种类型的流体均已成功启动。当充满HMWH流体时，翅片和散热器变压器的最高绕组温度分别为58？C和52？C。这些绕组温度远低于绝缘体的最大连续额定温度105°C（在40°C的环境中上升65°C）。没有发生热失控。实际上，结果表明，在低环境温度下启动和连续运行期间，装有HMWH的变压器可以承受较大的过载。

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