Advanced composite dielectric materials for use in the transmision of electrical power by direct current

用于直流电传输的先进复合介电材料

• 批准号: 1695-2013
• 负责人: Cherney, Edward
• 金额: $ 1.62万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=637533
• 关键词: Advanced; composite; dielectric; materials; use

Standard industry tests coupled with in-service experience have commonly been used to develop insulator designs for high voltage alternating current (HVAC) transmission lines. For the most part, conventional ceramic insulators have been used on HVAC transmission lines for the past 100 years or so. Today, insulators that are made from polymeric materials (polymer insulators) are gradually replacing the older ceramic insulators. Polymer insulators have been developed in this way for HVAC and are currently used in limited numbers on high voltage direct current (HVDC) transmission lines. In light of increased global interest in HVDC transmission, polymer insulators for HVDC have become an unknown entity, as no standard industry tests have been developed for HVDC. In this research program, polymer insulators for HVAC are assessed for use at HVDC using the standard tests developed for HVAC, but suitably modified for HVDC, both for suitability of polymeric material and insulator design evaluation in terms of being able to withstand the environmental conditions conducive to aging of polymeric materials. The research program will initially examine the inclined plane test (IPT) that has been developed specifically for AC and suitably modifying the test for DC. This step highlights the differences in aging mechanisms of polymeric materials, between AC and DC, and validates the use of AC polymeric insulation materials at DC. The electrowetting mechanism of surfaces, which is a major factor in aging of polymeric materials, is to be investigated and compared at AC, +DC and -DC. The two common polymeric materials for HVAC insulators, silicone rubber and ethylene propylene diene monomer, will be studied with various fillers and filler levels using the IPT at DC. Insulator design, for DC will be investigated in a salt-fog environment and existing designs for AC will be examined for use at DC at similar aging conditions. Modifications to insulator profile and material for optimum performance is expected to be the outcome of the research program.

标准工业试验结合使用经验通常用于开发高压交流（HVAC）输电线路的绝缘子设计。在过去的100年左右，传统陶瓷绝缘子在大多数情况下已用于HVAC输电线路。今天，由聚合物材料制成的绝缘体（聚合物绝缘体）正在逐渐取代旧的陶瓷绝缘体。聚合物绝缘体已经以这种方式被开发用于HVAC，并且目前在高压直流（HVDC）输电线路上以有限数量使用。鉴于全球对HVDC传输的兴趣增加，用于HVDC的聚合物绝缘子已经成为未知的实体，因为没有针对HVDC开发标准的工业测试。在这项研究计划中，用于HVAC的聚合物绝缘子被评估用于HVDC，使用为HVAC开发的标准测试，但对HVDC进行适当修改，以评估聚合物材料的适用性和绝缘子设计评估，以能够承受有利于聚合物材料老化的环境条件。该研究计划将首先检查专门为AC开发的斜面测试（IPT），并适当修改DC测试。这一步骤突出了AC和DC之间聚合物材料老化机制的差异，并验证了AC聚合物绝缘材料在DC下的使用。表面的电润湿机制，这是聚合物材料老化的一个主要因素，是在AC，+DC和-DC的研究和比较。两种常见的聚合物材料的暖通空调绝缘子，硅橡胶和三元乙丙橡胶，将研究与各种填料和填料水平使用的IPT在DC。将在盐雾环境中对直流绝缘子设计进行研究，并将在类似老化条件下对直流使用的现有交流绝缘子设计进行检查。改进绝缘体外形和材料以获得最佳性能预计将是研究计划的成果。