水力发电
水力髮電
수력발전
WATER POWER
2014年
12期
63-67
,共5页
水轮发电机组%振动%分析%建议%龚嘴水电站
水輪髮電機組%振動%分析%建議%龔嘴水電站
수륜발전궤조%진동%분석%건의%공취수전참
turbine-generator set%vibration%analysis%proposal%Gongzui Hydropower Station
针对龚嘴水电站水轮发电机组改造后出现的振动问题，通过对真机试验结果的分析，并与机组的实际运行记录进行比较，提出了调整、处理励磁轴线摆度或测量调整励磁滑环的圆度与同轴度，排查定转子空气间隙和转子绕组匝间短路以消除电磁不平衡，做调相运行工况试验进一步确认振动原因是水力不平衡还是电气不平衡，建立水轮机转轮模型仿真优化水力设计等措施，以改善水轮机稳定性和调节性。
針對龔嘴水電站水輪髮電機組改造後齣現的振動問題，通過對真機試驗結果的分析，併與機組的實際運行記錄進行比較，提齣瞭調整、處理勵磁軸線襬度或測量調整勵磁滑環的圓度與同軸度，排查定轉子空氣間隙和轉子繞組匝間短路以消除電磁不平衡，做調相運行工況試驗進一步確認振動原因是水力不平衡還是電氣不平衡，建立水輪機轉輪模型倣真優化水力設計等措施，以改善水輪機穩定性和調節性。
침대공취수전참수륜발전궤조개조후출현적진동문제，통과대진궤시험결과적분석，병여궤조적실제운행기록진행비교，제출료조정、처리려자축선파도혹측량조정려자활배적원도여동축도，배사정전자공기간극화전자요조잡간단로이소제전자불평형，주조상운행공황시험진일보학인진동원인시수력불평형환시전기불평형，건립수륜궤전륜모형방진우화수력설계등조시，이개선수륜궤은정성화조절성。
For eliminating the vibration of turbine-generator sets after transformation in Gongzui Hydropower Station, the results of prototype tests are analyzed and compared with actual operation records. Some suggestions are presented based on analysis results, including adjusting the swing of excitation axis or measuring the roundness and concentricity of excitation slide ring, checking the air gap between rotor and stator and the short circuits of rotor winding to eliminate electromagnetic imbalance, conducting phase modulation operating test to further confirm the causes of vibration being hydraulic or electrical imbalance, and establishing simulation model of runner to optimize the hydraulic design of turbine.
