侯荣利

摘 要：为提高新能源的消纳能力，火电机组检修深度调峰势在必行。现有火电机组需进行精细化调整和改造，以具备深度调峰和快速启停能力。本文对未进行改造的600MW亚临界机组进行深度调峰分析。研究发现，很多因素影响机组深度调峰的安全稳定运行，如燃煤特性、制粉系统、汽轮机末级叶片安全。机组深度调峰期间机组设备参数，大幅偏离设计值，容易引起设备异常。为避免深度调峰影响机组安全，运维人员需从锅炉、汽轮机、协调控制和环保设备等方面考虑，深入分析深度调峰期间的危险点，通过运行调整手段或设备改造解决深度调峰难题。

关键词：深度调峰;锅炉稳燃;汽轮机设备;环保设备;机组协调

中图分类号：TM621.2文献标识码：A文章编号：1003-5168（2019）29-0039-04

Study on Dangerous Points of Deep Peaking Equipment for 600MW Unit

HOU Rongli

（Shanxi Hequ Power Plant of CHN Energy Guoshen Group，Xinzhou Shanxi 036500）

Abstract： In order to improve the ability of new energy to absorb， it is imperative for the thermal power unit to overhaul the depth. The existing thermal power units need to be finely adjusted and modified to have deep peak shaving and fast start and stop capability. In this paper， deep peak shaving analysis was performed on 600MW subcritical units that had not been modified. The study found that many factors affected the safe and stable operation of the unit's deep peak shaving， such as coal-fired characteristics， milling system， and turbine blade safety. The unit equipment parameters during the deep peaking of the unit were greatly deviated from the design value， which was likely to cause equipment anomalies. In order to avoid the impact of deep peak shaving on the safety of the unit， the operation and maintenance personnel should consider the boiler， steam turbine， coordinated control and environmental protection equipment， analyze the dangerous points during the deep peaking period， and solve the problem of deep peak shaving through operation adjustment means or equipment transformation.

Keywords： depth peak shaving;stable combustion of boiler;steam turbine equipment;environmental protection equipment;unit coordinating

為解决日益严重的弃风（光、水）问题，提高新能源的消纳能力，提高火电机组的运行灵活性已是迫在眉睫的任务，国家能源局2016年年初连续召开会议并发文，对开展火电灵活性改造提出明确要求，计划“十三五”期间实施2.2亿kW燃煤机组的灵活性改造，使机组具备深度调峰能力，并进一步增加负荷响应速率，部分机组具备快速启停调峰能力。提升灵活性改造预期将使热电机组增加20%额定容量的调峰能力，纯凝机组增加15%～20%额定容量的调峰能力。通过加强国内外技术交流和合作，部分具备改造条件的电厂预期达到国际先进水平，机组不投油稳燃时纯凝工况最小出力达到25%～30%额定负荷。

国家能源局山西监管办公室下发《山西电力风火深度调峰市场操作细则》的通知，2018年1月1日起正式执行。……