3月底，四川公司挖黑水电站1号机组顺利并网发电，经过72小时试运行，机组工况良好并正式归调，标志着挖黑水电站1号机组A级检修工作圆满结束。

乐山分公司高度重视此次A修工作，始终强调把安全放在首位，强化全过程管控，严把检修质量关，确保整个检修工作高质量完成。最终，通过增设机组座环导流锥、转轮偏车及配重、处理顶盖测量孔气蚀等有效技改措施，消除了机组振动、水导轴承超温限、顶盖漏水等问题，极大地提升了机组稳定性。

挖黑电站1号机组A级检修为主汛期满发防汛工作做好了充足准备，能最大限度发挥电站的经济效益和社会作用，促进企业存量资产提质增效。

At the end of March, Unit 1 of the Sichuan Company's Wuhei Hydropower Station was successfully connected to the grid for power generation, and after 72 hours of trial operation, the unit was in good working condition and officially adjusted, marking the successful completion of the A-level overhaul of Unit 1 of the Wuhei Hydropower Station.

Leshan Branch attaches great importance to the A repair work, always emphasizes putting safety in the first place, strengthens the whole process control, strictly controls the maintenance quality, and ensures that the entire maintenance work is completed with high quality. Finally, through the addition of the unit's seat ring diversion cone, runner deflection and counterweight, and the treatment of cavitation in the measuring hole of the top cover and other effective technical reform measures, the unit vibration, water guide bearing temperature limit, water leakage and other problems are eliminated, and the unit stability is greatly improved.

The A-level maintenance of Unit 1 of Wuhei Power Station is fully prepared for the flood control work during the main flood season, which can maximize the economic benefits and social role of the power station and promote the quality and efficiency of the stock assets of enterprises.