{"title":"Control of VAr Compensator in the Quarry Electric Network","authors":"S. I. Malafeev, A. A. Malafeeva","doi":"10.3103/s1068371224700184","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In the electrical networks of mining enterprises, power supply to powerful loads, e.g., mining excavators, is carried out using cantilever lines. During operation of a cyclic, powerful, sharply variable load and energy recovery, deviations and voltage fluctuations are observed. A method to reduce voltage fluctuations in this network is considered using a static VAr compensators, the operating algorithm of which involves control over the capacitive/inductive current in the supply line in proportion to the active component of the load current. The proportionality coefficient between the reactive current of a line and the active load current is taken to be equal to the ratio of active and inductive resistance of the supply line. The complex resistance of the supply electrical network is assumed to be known or identified during operation. The equations are given to calculate currents in the power supply system for different modes. The electrical power processes during operation of a thyristor–reactor VAr compensator with a special controller have been carried simulated.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"48 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Electrical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s1068371224700184","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
In the electrical networks of mining enterprises, power supply to powerful loads, e.g., mining excavators, is carried out using cantilever lines. During operation of a cyclic, powerful, sharply variable load and energy recovery, deviations and voltage fluctuations are observed. A method to reduce voltage fluctuations in this network is considered using a static VAr compensators, the operating algorithm of which involves control over the capacitive/inductive current in the supply line in proportion to the active component of the load current. The proportionality coefficient between the reactive current of a line and the active load current is taken to be equal to the ratio of active and inductive resistance of the supply line. The complex resistance of the supply electrical network is assumed to be known or identified during operation. The equations are given to calculate currents in the power supply system for different modes. The electrical power processes during operation of a thyristor–reactor VAr compensator with a special controller have been carried simulated.
摘要 在矿业企业的电网中，使用悬臂线为矿用挖掘机等大功率负载供电。在周期性、大功率、急剧变化的负载和能量回收运行期间，会出现偏差和电压波动。考虑采用静态 VAr 补偿器来减少该网络中的电压波动，其运行算法包括控制供电线路中的电容/电感电流与负载电流的有功分量成比例。线路的无功电流与有功负载电流之间的比例系数等于供电线路的有功电阻和无功电阻之比。假定供电电网的复合电阻是已知的，或在运行过程中已确定。给出了不同模式下供电系统电流的计算公式。对带有特殊控制器的晶闸管-反应器 VAr 补偿器运行期间的电力过程进行了模拟。
期刊介绍：
Russian Electrical Engineering is a journal designed for the electrical engineering industry and publishes the latest research results on the design and utilization of new types of equipment for that industry and on the ways of improving the efficiency of existing equipment.
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