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首页> 外文会议>IEEE Conference on Energy Internet and Energy System Integration >Method for Debugging the Polarity of the Mutual Inductor for 1,000 kV EHV Regulating and Compensating Transformer
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Method for Debugging the Polarity of the Mutual Inductor for 1,000 kV EHV Regulating and Compensating Transformer

机译：1000 kV超高压调节补偿变压器互感器极性调试方法

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摘要

For the polarity test of the CT for 1, 000kV ultra-high voltage(UHV) infrastructure projects, the polarity layout method and test program of a main transformer, etc. were discussed under 3/2 complete serial connection mode in an all-round manner. The protection of 1, 000kV bus difference, circuit breakers, lines and high resistance, the polarity of a metering device CT and the receiving method of a secondary circuit were discussed; and a reasonable point polarity method was provided before actual production. The polarity configuration of CTs at the low-voltage side of an ultra-high voltage transformer body bushing, common windings, a voltage regulation-compensation transformer, a house transformer and a main transformer, and the calculation logic of protective devices were studied. The effect of essential factors such as actual wring, equivalent impedance, etc. on polarity were analyzed, and the adverse factor of voltage regulation position was pointed out. When the polarity at the high-voltage side of the housing transformer was being studied, it is strongly interfered by electromagnetic coupling. The selection scheme of CT secondary circuit was studied according to the requirements of different ultra-high voltage protective devices, and the point polarity measures of the voltage regulation-compensation transformer were explored according to protection calculation logic. When the polarity of the main transformer and the auxiliary transformer for a compensation transformer were being tested, the cause of interference among three phases due to the Y/Δ wiring method at HV and low sides of the main transformer was mainly discussed.
机译：为了对1 000 000kV超高压基础设施项目的CT进行极性测试，在3/2完全串联模式下全面讨论了主变压器的极性布局方法和测试程序等。方式。讨论了1，000kV母线差的保护，断路器，线路和高电阻，计量装置CT的极性以及二次回路的接收方法;并在实际生产之前提供了合理的点极性方法。研究了超高压变压器主体套管低压侧CT，公共绕组，调压补偿变压器，房屋变压器和主变压器的CT极性配置，以及保护装置的计算逻辑。分析了实际接线，等效阻抗等基本因素对极性的影响，指出了调压位置的不利因素。在研究外壳变压器高压侧的极性时，会受到电磁耦合的强烈干扰。根据不同超高压保护装置的要求，研究了CT二次回路的选择方案，并根据保护计算逻辑，探讨了调压补偿变压器的点极性措施。在测试主变压​​器和补偿变压器用辅助变压器的极性时，主要讨论了由于HV和主变压器低压侧的Y /Δ接线方法而引起的三相干扰的原因。

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