Evaluation of Current Transformers and Protection Relay Circuit

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) Pub Date : 2020-06-01 DOI:10.1109/EEEIC/ICPSEUROPE49358.2020.9160699

David Lazecký, S. Rusek, R. Goňo, V. Král, Zbigniew Leonowicz

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引用次数: 1

Abstract

Current transformers (CTs) as same as protection relays are vital devices in electrical networks. Requirements and specification for CTs are described in technical standards for 60 years at least, but aging and performance after some time of on-site operation have not been described in recent works well, especially in conditions similar to network and climate situation in the Central Europe. In case of protection relays, there are not many papers describing the fault recording function, especially with real data. Therefore, this paper presents a combination of both above-described problems. Due to the intended aim of using output values for technical state estimation of network components in Reliability Centered Maintenance (RCM) strategy development, only protection cores measurement for error ratio evaluation was proposed. The results of two selected older oil-insulated current transformers from distribution network and four protection relays are presented in the paper. The highest current recordings, ratio error evaluation, and values are presented, depicted, and discussed.

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电流互感器及继电保护电路的评价

电流互感器与保护继电器一样，是电网中的重要设备。至少60年来，技术标准中对ct的要求和规格进行了描述，但在最近的工作中，特别是在类似中欧网络和气候情况的条件下，并没有很好地描述现场运行一段时间后的老化和性能。对于继电保护的故障记录功能，有实际数据描述的文献并不多。因此，本文提出了上述两个问题的结合。在以可靠性为中心的维护(RCM)策略开发中，由于期望使用输出值对网络部件的技术状态进行估计，因此仅提出了保护芯测量用于误差率评估。本文介绍了配电网中选用的2台老式油绝缘电流互感器和4台继电保护装置的试验结果。最高电流记录，比率误差评估，和值提出，描述和讨论。

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来源期刊

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)

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