1. Qiu, W., Zheng, R., Huang, X., et al.: Analysis of an oil flow relay heavy gas malfunction accident. Sichuan Electric Power Technol. 45(4), 87–90 (2022) (in Chinese)
2. Wang, W., Wang, S., He, D.: Analysis of a transformer heavy gas protection action. J. Shandong Electric Power Coll. 25(2), 17–19 (2022) (in Chinese)
3. “Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil” DL/T722-2014 (in Chinese)
4. Liu, C., Li, H.: Fault analysis of heavy gas protection action for main transformer 3. Electromech. Technol. Hydropower Stat. 43(z1), 31–32 (2020) (in Chinese)
5. Xiaoyun, C., Weiguang, Z.: Analysis and preventive measures for heavy gas accidents in 220 kV transformers. Electr. Technol. 1, 94–96 (2018). (in Chinese)