基于DNN的IM-DWT三区距离继电器功率摆动闭锁方案

IF 2.4 Q2 MULTIDISCIPLINARY SCIENCES Smart Science Pub Date : 2022-01-07 DOI:10.1080/23080477.2021.2023790
Cholleti Sriram, J. Somlal
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引用次数: 3

摘要

3区距离继电器连接在系统中,用于保护传输线,当主继电器因故障或其他问题失效时,充当备用继电器;它可以作为二级继电器来清除问题。在功率摆幅条件下,电流和电压的大小完全在继电器中引起误动作。在故障状态下,继电器不能正常工作,导致传输线跳闸。采用适当的功率摆挡方案可以有效地缓解上述问题。在该方法中,引入了基于监督的阻塞方案,避免了3区距离继电器在功率摆动情况下的误动作。提出了基于有功功率和源负载电压偏差的阻塞方案。采用改进的离散小波变换(IM-DWT)检测电压和电流信号。它可以感知功率,生成用于分析系统条件的系数,无论系统是否受到压力。本文利用深度神经网络(deep neural network, DNN)最具优势的算法来分析IM-DWT系数,以选择距离继电器的工作函数。DNN基于系数值运行两种模式,即RDL-1(状态评估)和RDL-2(功率摇摆识别)。基于阈值的阻断方法选择DNN的最优函数。整个系统在西方系统协调委员会(WSCC) IEEE 9总线系统中实现,并在MATLAB/Simulink软件中对设计和性能进行了验证。与现有的支持向量机、人工神经网络、k近邻等方法相比,该方法具有更大的优势,可以快速避免3区距离继电器的误操作。图形抽象
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IM-DWT with DNN Based Blocking Scheme of Third Zone Distance Relay in Power Swing Condition
ABSTRACT Zone 3 distance relay is linked in the system for protecting the transmission line that acts as a backup relay while the primary relay is in failure due to fault or any other issues; it can act as a secondary relay to clear the problems. Under power swing conditions, the magnitude of current and voltage is entirely in the relay to cause maloperation. In the mal-operative conditions, the relay was not working correctly as well to trip the transmission line. The above problem is mitigated by using the proper method of power swing blocking scheme. In the proposed approach, the supervision-based blocking scheme is introduced to avoid the maloperation of zone 3 distance relay under power swing conditions. The proposed blocking scheme is based on active power and the deviation of source and load voltage. The voltage and current signals are sensed by improved discrete wavelet transform (IM-DWT). It senses the power to generate the coefficients for analysis of the system conditions, whether the system is stressed or not. Here, the most advantageous algorithm of deep neural network (DNN) is utilized to analyze the IM-DWT coefficient for selecting the working function of distance relay. DNN operates two modes based on the coefficient values, namely RDL-1 (state assessment) and RDL-2 (power swing identification). The threshold-based blocking approach chooses the optimal function of DNN. The overall proposed system is implemented in the Western System Coordinating Council (WSCC) IEEE 9 bus system, and the design and performance are verified in MATLAB/Simulink software. The proposed approach is more advantageous and offers a rapid operation to avoid the maloperation of the zone 3 distance relay as compared to the existing methods like support vector machine, artificial neural network, and k-nearest neighbour. GRAPHICAL ABSTRACT
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来源期刊
Smart Science
Smart Science Engineering-Engineering (all)
CiteScore
4.70
自引率
4.30%
发文量
21
期刊介绍: Smart Science (ISSN 2308-0477) is an international, peer-reviewed journal that publishes significant original scientific researches, and reviews and analyses of current research and science policy. We welcome submissions of high quality papers from all fields of science and from any source. Articles of an interdisciplinary nature are particularly welcomed. Smart Science aims to be among the top multidisciplinary journals covering a broad spectrum of smart topics in the fields of materials science, chemistry, physics, engineering, medicine, and biology. Smart Science is currently focusing on the topics of Smart Manufacturing (CPS, IoT and AI) for Industry 4.0, Smart Energy and Smart Chemistry and Materials. Other specific research areas covered by the journal include, but are not limited to: 1. Smart Science in the Future 2. Smart Manufacturing: -Cyber-Physical System (CPS) -Internet of Things (IoT) and Internet of Brain (IoB) -Artificial Intelligence -Smart Computing -Smart Design/Machine -Smart Sensing -Smart Information and Networks 3. Smart Energy and Thermal/Fluidic Science 4. Smart Chemistry and Materials
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