Determination of Withstand Capability of Power Transformers Under GIC Conditions

GIC条件下电力变压器耐受能力的测定

• 批准号: 570925-2021
• 负责人: RezaeiZare, Afshin
• 金额: $ 1.82万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721791
• 关键词: Determination; Withstand; Capability; Power; Transformers

This research program aims to analyze and determine the impacts of the Geomagnetically Induced Current (GIC) on power transformers operation and determine the transformers' withstand capabilities when subjected to saturation and overheating due to GIC. This is crucial for transformer manufacturers such as Northern Transformer Corp. (NTC) and their clients to ensure that their transformers can withstand the GIC stresses and the power system operators can successfully operate the power system and transformers during solar storms. The associated problematic situations result from the Geomagnetic Disturbance (GMD) phenomenon, also referred to as solar geomagnetic storm or simply solar storm. If the GMD occurs with high intensity, it can result in widespread impacts on power systems originating from power transformers. Canada is one of the most vulnerable areas to GMD globally, and the most significant GMD incident to power system happened in Canada. In March 1989, a mild solar storm resulted in the Hydro--Quebec power system blackout, which left nine million people without power for more than eight hours with a minimum estimated cost of $300M. Due to such detrimental effects, North American Electric Reliability Corporation (NERC) has released two important standards that require the power utilities and system operators to perform GMD impact assessments and provide evidence that their transformers and systems are not prone to failure and maloperation, during the GMD and the GIC flow in power systems. As a result and to address the raised concerns, the power utilities and operators require the transformer manufacturers to provide the withstand capability assessment of their transformers under the GIC conditions. Such assessments require i) new advanced models and ii) special test methods and setups that are not common even in the transformer manufacturers' labs. The proposed project addresses the above challenges and accurately determines the NTC's transformer withstand capabilities when subjected to GIC.

本研究计划旨在分析和确定地磁感应电流（GIC）对电力变压器运行的影响，并确定变压器承受GIC引起的饱和和过热的能力。这对于Transformer制造商（如北方Transformer Corp.（NTC））及其客户而言至关重要，以确保其变压器能够承受GIC应力，并且电力系统运营商能够在太阳风暴期间成功地操作电力系统和变压器。相关的问题情况是由地磁扰动（GMD）现象引起的，也被称为太阳地磁暴或简单的太阳风暴。如果GMD以高强度发生，则其可导致源自电力变压器的对电力系统的广泛影响。加拿大是全球最容易发生GMD的地区之一，对电力系统影响最大的GMD事件发生在加拿大。1989年3月，一场温和的太阳风暴导致了魁北克水电系统停电，造成900万人断电超过8小时，估计最低成本为3亿美元。由于这种不利影响，北美电力可靠性公司（NERC）已经发布了两个重要的标准，要求电力公司和系统运营商进行GMD影响评估，并提供证据，证明他们的变压器和系统在电力系统中的GMD和GIC流期间不容易发生故障和误操作。因此，为了解决所提出的问题，电力公司和运营商要求Transformer制造商提供其变压器在GIC条件下的耐受能力评估。这种评估需要i）新的先进模型和ii）特殊的测试方法和设置，即使在Transformer制造商的实验室中也不常见。拟议的项目解决了上述挑战，并准确地确定了NTC的Transformer承受GIC时的能力。