近区短路对国华盘电主变压器的影响评估及维护建议

Influence Evaluation and Maintenance Suggestions of Short Circuit in Near Area on Main Transformer in Guohua Panshan Power

天津国华盘山发电公司位于天津市蓟州区,位置在京津唐电网负荷的中心,近年来,由于电网近区短路故障的频发,对该公司主变造成一定的冲击。本文通过调取电网典型近区短路工况后历史数据分析对该公司主变当前状态及抗短路能力做出评估。运用变压器绕组电容量法可以有效验证该公司主变压器绕组状态及可靠性,并提出了未来主变压器的维护建议。

Tianjin Guohua Panshan Power Generation Plant is located in Jizhou District of Tianjin City,in the center of Beijing-Tianjin-Tangshan power grid load. In recent years,due to the frequent short circuit faults in the near area of the power grid,the main transformer of the plant has been impacted to some extent. In this paper,the current state and anti short circuit capability of the main transformer of the plant are evaluated by selecting historical data analysis after the typical short circuit condition of the power grid.The winding state and reliability of the main transformer in the plant are verified by the effective methods,such as the capacitance method of transformer winding,and maintenance suggestions for the main transformer in the future are proposed.