Chenxing Wang, Xuezhong Liu, Xianrong Wang, Ning Liu, Xiuying Jiao, Y. Tan
{"title":"高压换流阀内冷却回路针式分级电极上沉积物的分布特征","authors":"Chenxing Wang, Xuezhong Liu, Xianrong Wang, Ning Liu, Xiuying Jiao, Y. Tan","doi":"10.1109/ICACACT.2014.7223592","DOIUrl":null,"url":null,"abstract":"Inorganic sediments frequently deposit on the pin-type grading electrodes installed in the inner cooling circuits for high voltage converter valves. This investigation focuses on the distributing characteristics of deposited sediments. Field data have been collected from three ±500kV converter stations. Sediment distributions corresponding to different valve tower structures are summarized. The relationships between sediment thickness and electrode locations in both horizontal and vertical components of converter valve are analyzed. The chemical compositions of field-collected sediment samples are analyzed by means of energy dispersive spectrometer (EDS). Electrical insulating properties of the samples are measured. The results indicate that the deposition degree of the sediment is mainly dominated by the electrical current through the pin-type grading electrode. The electronegative sediment particles tend to deposit on the grading electrodes with positive polarity. The deposited sediment is mainly composed of aluminum oxide compounds and may impact the uniform effect of the grading electrode.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":"{\"title\":\"The distributing characteristics of sediment deposited on pin-type grading electrodes in inner cooling circuit of HV converter valve\",\"authors\":\"Chenxing Wang, Xuezhong Liu, Xianrong Wang, Ning Liu, Xiuying Jiao, Y. Tan\",\"doi\":\"10.1109/ICACACT.2014.7223592\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Inorganic sediments frequently deposit on the pin-type grading electrodes installed in the inner cooling circuits for high voltage converter valves. This investigation focuses on the distributing characteristics of deposited sediments. Field data have been collected from three ±500kV converter stations. Sediment distributions corresponding to different valve tower structures are summarized. The relationships between sediment thickness and electrode locations in both horizontal and vertical components of converter valve are analyzed. The chemical compositions of field-collected sediment samples are analyzed by means of energy dispersive spectrometer (EDS). Electrical insulating properties of the samples are measured. The results indicate that the deposition degree of the sediment is mainly dominated by the electrical current through the pin-type grading electrode. The electronegative sediment particles tend to deposit on the grading electrodes with positive polarity. The deposited sediment is mainly composed of aluminum oxide compounds and may impact the uniform effect of the grading electrode.\",\"PeriodicalId\":101532,\"journal\":{\"name\":\"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICACACT.2014.7223592\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICACACT.2014.7223592","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The distributing characteristics of sediment deposited on pin-type grading electrodes in inner cooling circuit of HV converter valve
Inorganic sediments frequently deposit on the pin-type grading electrodes installed in the inner cooling circuits for high voltage converter valves. This investigation focuses on the distributing characteristics of deposited sediments. Field data have been collected from three ±500kV converter stations. Sediment distributions corresponding to different valve tower structures are summarized. The relationships between sediment thickness and electrode locations in both horizontal and vertical components of converter valve are analyzed. The chemical compositions of field-collected sediment samples are analyzed by means of energy dispersive spectrometer (EDS). Electrical insulating properties of the samples are measured. The results indicate that the deposition degree of the sediment is mainly dominated by the electrical current through the pin-type grading electrode. The electronegative sediment particles tend to deposit on the grading electrodes with positive polarity. The deposited sediment is mainly composed of aluminum oxide compounds and may impact the uniform effect of the grading electrode.
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