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Superimposed Energy-based Fault Detection and Classification Scheme for Series-compensated Line

机译：串联补偿线路基于能量的叠加故障检测与分类方案

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摘要

This article presents a fault detection and classification scheme for a series-compensated transmission line that is based on post-fault superimposed energy. The derivations of the scheme presented in this article are obtained with consideration of both the real and reactive components of the power system. However, the criterion depends only on the real components of the power system. For a forward fault, superimposed energy is negative, whereas it is positive for a reverse fault. If the relays of both ends detect forward fault, it is an internal fau else, it is an external fault. The magnitude of superimposed energy depends on the fault type, location, and resistance, which makes it difficult to classify the type of fault as a fixed threshold cannot be set. Therefore, to classify the type of fault, energy coefficients have been introduced that depend on the superimposed energy measured at the relay. To test the capability of the superimposed energy based scheme, the test system has been simulated in PSCAD/EMTDC (Manitoba HVDC Research Centre) and an algorithm has been implemented in MATLAB (The MathWorks, Natick, Massachusetts, USA). Results proved that the scheme is accurate and robust against different system conditions and uncertainties.
机译：本文提出了一种基于故障后叠加能量的串联补偿传输线的故障检测和分类方案。本文提出的方案的推导是在考虑电力系统的有功和无功组件的情况下获得的。但是，该标准仅取决于电力系统的实际组件。对于正向故障，叠加能量为负，而对于反向故障，叠加能量为正。如果两端的继电器都检测到正向故障，则是内部故障。否则，这是外部故障。叠加能量的大小取决于故障类型，位置和电阻，这使得难以对故障类型进行分类，因为无法设置固定的阈值。因此，为了对故障类型进行分类，引入了能量系数，该能量系数取决于在继电器上测得的叠加能量。为了测试基于能量的叠加方案的功能，测试系统已在PSCAD / EMTDC（曼尼托巴HVDC研究中心）中进行了仿真，并且算法已在MATLAB（美国马萨诸塞州纳蒂克的MathWorks）中实现。结果证明，该方案在不同的系统条件和不确定性条件下都是准确，鲁棒的。

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