水电自动化与大坝监测
水電自動化與大壩鑑測
수전자동화여대패감측
HYDROPOWER AUTOMATION AND DAM MORNITORING
2011年
5期
40-42
,共3页
水轮发电机组%调速器%主配压阀拒动%115％额定转速%过速保护
水輪髮電機組%調速器%主配壓閥拒動%115％額定轉速%過速保護
수륜발전궤조%조속기%주배압벌거동%115％액정전속%과속보호
hydraulic turbine generator%governor%rejecting the action of main control valve%115％ rated speed%over-speed protection
详细介绍了水电机组采用115%额定转速（nr）过速信号加主配压阀位置接点判断115%nr过速保护容易产生误动的原因。阐述了传统常规的主配压阀拒动的处理方式,讨论了机组115%nr过速保护控制解决方案,同时提出了一种新的115%nr过速保护逻辑控制策略：在115%nr上升沿期间加主配压阀拒动信号来启动115%nr过速保护,并指出了该方案的特点。
詳細介紹瞭水電機組採用115%額定轉速（nr）過速信號加主配壓閥位置接點判斷115%nr過速保護容易產生誤動的原因。闡述瞭傳統常規的主配壓閥拒動的處理方式,討論瞭機組115%nr過速保護控製解決方案,同時提齣瞭一種新的115%nr過速保護邏輯控製策略：在115%nr上升沿期間加主配壓閥拒動信號來啟動115%nr過速保護,併指齣瞭該方案的特點。
상세개소료수전궤조채용115%액정전속（nr）과속신호가주배압벌위치접점판단115%nr과속보호용역산생오동적원인。천술료전통상규적주배압벌거동적처리방식,토론료궤조115%nr과속보호공제해결방안,동시제출료일충신적115%nr과속보호라집공제책략：재115%nr상승연기간가주배압벌거동신호래계동115%nr과속보호,병지출료해방안적특점。
The over-speed protection misoperation under 115% rated speed in hydraulic turbine generator is introduced.The reason for the above problem is analyzed.Traditional tripping approach about the main pressure valve is described.The unit over-speed protection control solutions under 115% rated speed are discussed.Meanwhile,a new kind of over-speed protection logic control strategy is put forward： using the rising edge of 115% rated speed with valves position to judge the mis operation of speed governor＇s main control valve.At present,the method has been applied in the Shanxi Power Plant with good results.And the disoperation of the protection and optimization of the system structure has been solved.
