燃煤发电厂深度调峰灵活性改造安全风险分析和控制措施研究

Study on Safety Risk Analysis and Control Measures for Deep Peak Regulation and Flexibility Retrofit of Coal-Fired Power Plants

摘要: 在“双碳”目标引领下，我国能源结构加速转型，新能源装机规模持续扩大，火电机组逐步从主体性电源转变为提供灵活性调节能力的基础性电源，深度调峰灵活性改造成为必然趋势。然而，现役部分燃煤发电机组在深度调峰灵活性改造过程中安全风险突出，严重制约改造工作的顺利推进。本文以上海地区某燃煤发电厂亚临界630 MW机组为研究对象，依托企业现有安全管理信息平台，围绕深度调峰灵活性改造过程中的安全风险进行分析，辨识出危险源，针对锅炉炉膛检修、脱硝催化剂更换等重点高风险作业，运用作业危害分析法细化作业步骤风险，调整LEC法取值标准，识别出较大以上安全风险，建立分级管控机制，形成全流程安全风险控制体系。

Abstract: Driven by the “Dual Carbon” goals, China’s energy structure is undergoing an accelerated transformation with the continuous expansion of installed new energy capacity. Thermal power units have gradually evolved from the main power source to a fundamental power source providing flexible regulation capacity, making the flexibility retrofit for deep peak regulation an inevitable trend. However, prominent safety risks exist during the deep peak regulation flexibility retrofit of some in-service coal-fired power units, which severely hinder the smooth progress of the retrofit work. Taking a subcritical 630 MW unit of a coal-fired power plant in Shanghai as the research object and relying on the enterprise’s existing safety management information platform, this paper conducts an analysis of the safety risks throughout the deep peak regulation flexibility retrofit process and identifies hazard sources. For key high-risk operations such as boiler furnace maintenance and denitrification catalyst replacement, refine the risks of operation steps by applying Job Hazard Analysis (JHA), adjust the value criteria of the LEC method, identify safety risks of relatively high level and above, establish a hierarchical control mechanism, and form a whole-process safety risk control system.