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On Technical Requirements for Arc Suppression Reactors in the Distribution Circuit of 6—35 kV

机译：6–35 kV配电线路中消弧电抗器的技术要求

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摘要

Development of the technical requirements for arc suppression reactors (ASRs) used for the capacitive current compensation of the single-phase earth fault is a critical task. The corresponding GOST (State Standard) 19470—74 "Oil-Filled Arc Suppression Reactors. Technical Requirements" is no more valid; automatically controlled reactors (with adjustable spacing controlled by magnetic biasing) are the mainstream; and completely new reactor designs, with the capacitor adjustment in particular, have become available. The standard guide for the earth-fault current compensation [ 1 ], not taking into account new technologies, has become obsolete. This paper considers the current criteria for the ASR application in the 6- to 35-kV networks and proposes new ones. It is proposed to use the residual earth-fault current, but not the ASR detuning coefficient, as the major criterion for capacitive current compensation of the single-phase earth fau in this case, new requirements for the ASR and the network conditions characterized by active phase-to-ground and harmonics content currents are specified taking into account the electrical safety regulations. The problem of capacitance asymmetry is considered absolutely and relatively, and it is shown that the use of ASRs controlled by magnetic biasing allows omitting the network balancing and limitation of the asymmetry voltage at the level of 0.75% of the phase voltage. It is proposed to take into account these recommendations during development of an earth-fault current compensation guide and general technical requirements for ASRs and automatic tuning systems.
机译：制定用于单相接地故障的电容性电流补偿的消弧电抗器（ASR）的技术要求是一项关键任务。相应的GOST（国家标准）19470-74“充油消弧反应器。技术要求”不再有效；自动控制电抗器（通过磁偏置控制可调节间距）是主流；并且已经有了全新的电抗器设计，尤其是电容器的调整。不考虑新技术的接地故障电流补偿标准指南[1]已过时。本文考虑了6到35 kV网络中ASR应用的当前标准，并提出了新的标准。建议使用剩余的接地故障电流，而不使用ASR失谐系数，作为单相接地故障电容电流补偿的主要标准。在这种情况下，考虑到电气安全法规，对ASR和网络条件提出了新要求，这些要求以有源相接地和谐波含量电流为特征。绝对和相对地考虑了电容不对称问题，这表明使用由磁偏置控制的ASR可以忽略网络平衡和将不对称电压限制在相电压的0.75％处。建议在制定接地故障电流补偿指南以及ASR和自动调整系统的一般技术要求时考虑这些建议。

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