电工电气
電工電氣
전공전기
ELECTROTECHNICS ELECTRIC
2011年
9期
38-40,46
,共4页
发电厂送出线%雷害故障%分析%对策
髮電廠送齣線%雷害故障%分析%對策
발전엄송출선%뇌해고장%분석%대책
power station lead-out transmission lines%lightning fault%analysis%countermeasure
对某发电厂送出线遭受雷击跳闸事故进行了分析。为了保证发电厂发变线单元接线方式接入系统的安全运行,应采取加装线路避雷器、可控放电避雷针及降低杆塔接地电阻等相应的防雷综合保护措施。运行实践表明,综合防雷效果显著,发电厂未发生雷击跳闸现象,初步实现了控制线路易击杆塔的雷害以及控制全线路雷害的防雷目标,为发电厂采用发变线单元接线方式接入系统的线路积累了运行经验,具有很好的推广应用价值。
對某髮電廠送齣線遭受雷擊跳閘事故進行瞭分析。為瞭保證髮電廠髮變線單元接線方式接入繫統的安全運行,應採取加裝線路避雷器、可控放電避雷針及降低桿塔接地電阻等相應的防雷綜閤保護措施。運行實踐錶明,綜閤防雷效果顯著,髮電廠未髮生雷擊跳閘現象,初步實現瞭控製線路易擊桿塔的雷害以及控製全線路雷害的防雷目標,為髮電廠採用髮變線單元接線方式接入繫統的線路積纍瞭運行經驗,具有很好的推廣應用價值。
대모발전엄송출선조수뢰격도갑사고진행료분석。위료보증발전엄발변선단원접선방식접입계통적안전운행,응채취가장선로피뢰기、가공방전피뢰침급강저간탑접지전조등상응적방뢰종합보호조시。운행실천표명,종합방뢰효과현저,발전엄미발생뢰격도갑현상,초보실현료공제선로역격간탑적뇌해이급공제전선로뇌해적방뢰목표,위발전엄채용발변선단원접선방식접입계통적선로적루료운행경험,구유흔호적추엄응용개치。
Analysis was made to lightning stroke tripping accident of certain power station lead-out transmission lines.To ensure the safety operation of power station generation transformer line unit wiring method connected in system,comprehensive anti-lightning protection measures,such as installing line arresters,installing controllable lightning rods,reducing tower grounding resistance,should be adopted.The comprehensive protection measures were effect and there was no phenomenon of lightning stroke occurred.The performance of preventing lightning stroke of line towers easy to be stroke was improved,as well as that of the lightning protection goal of transmission lines.The power station accumulated operation experience to adopt generation transformer line unit wiring method connected in system＇s lines.This comprehensive protection has a good promotional value.
