发电厂送出线雷击跳闸原因分析及对策

摘要

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。%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.