百万等级核电定子模压线棒的特性研究

The Characteristic Research of Million Grade Nucleus Generator Stator Module Bar

本文介绍了1250MW、24kV等级核汽轮发电机定子模压线棒绝缘结构的优化设计,制造的定子线棒表现出优异的特性,逐级耐电压至击穿时的场强平均值达到26.5kV/mm;特别是线棒断裂应变力平均值达到2497.4μstrain;600×10-6strainP-P下弯曲107循环后无疲劳。线棒绝缘通过了严苛的机电性能考核,可满足核电机组性能可靠、质量稳定、安全运行60年的要求。核电线棒的国产化极大地降低了电机制造成本,具有重大的经济效益和社会效益。

The article introduces the optimize design insulate structure of 1250MW, 24kV grade nucleus generator stator module bar. The bars behave excellent characteristic. Breakdown strength mean value （60 second voltage endurance） is 26.5kV/mm; Strain capability at fracture is 2497.4 μ strain; There is no distinctness inflected of bending strength after 107 cycles at 600×10-6 strainP-P magnitude. The bars stringent checking test had passed. Nucleus generator can work 60 yeas at dependability, stability and security.