A Preliminary Study on Control Indices and Emission Limits of Substation Noise Xiang Zhang, Xingwang Chen, Xiaojian Fang, Yuzhu Shi, Lingyun Lu, Yuhua Chen and Guoqing Di E3S Web Conf., 598 (2024) 02003 Published online: 27 November 2024 DOI: 10.1051/e3sconf/202459802003