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Real-time assessment of a symmetrical component and microcontroller based distance relay

机译：实时评估对称组件和基于微控制器的距离继电器

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This paper presents the design, implementation and real-time assessment of a microcontroller based digital distance relay that can be used for the protection of power transmission lines. The proposed design is implemented using a general-purpose Intel 8097 microcontroller and custom-made filters, operational amplifiers, sample-and-hold amplifiers, multiplexers, and analog-to-digital converters. The relay software is based on a computationally efficient symmetrical component based fault distance estimation algorithm. Results of the performance assessment studies on this algorithm have shown promising fault distance estimates for first-zone faults on the protected transmission line. Real-time implementation of the symmetrical component based fault distance estimation algorithm is presented and discussed in this paper. Hardware and software tools were used to design and fabricate a microcontroller based distance relay using the above-mentioned algorithm. This paper describes details of the design of the distance relay. A test setup in the laboratory using a transmission line model was used to generate data to assess the real-time response of the designed relay. High-speed relay operation of the order of one cycle is demonstrated in the test results.
机译：本文介绍了一种基于微控制器的数字距离继电器的设计，实现和实时评估，该继电器可用于保护输电线路。使用通用的Intel 8097微控制器和定制的滤波器，运算放大器，采样保持放大器，多路复用器和模数转换器，可以实现建议的设计。继电器软件基于计算效率高的基于对称分量的故障距离估计算法。对这种算​​法的性能评估研究的结果表明，对受保护的输电线路的第一区域故障的故障距离估计很有希望。提出并讨论了基于对称分量的故障距离估计算法的实时实现。使用上述算法，使用硬件和软件工具来设计和制造基于微控制器的距离继电器。本文详细介绍了距离继电器的设计。在实验室中使用传输线模型进行的测试设置用于生成数据，以评估所设计继电器的实时响应。测试结果证明了一个周期量级的高速继电器操作。

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