汽轮机调速系统失控的原因分析及应对措施分析

Analysis of the Cause of Loss of Control of Steam Turbine Speed Regulating System and Countermeasures

摘要

汽轮机调速系统是火电厂汽轮发电机组的一个重要组成部分，其功能是对机组的转速进行实时调节、对蒸汽流量进行控制，确保在电网频率、负荷变动情况下机组保持稳定运行。调速系统涉及多个环节协同工作，其运行稳定度与机组安全、电网频率稳定息息相关，特别是大型火电机组在面对一些复杂的负荷工况或者是多变的扰动工况时，经常出现因调速系统故障而引发的速度摆动、振荡甚至机组保护跳闸等情况。基于此，本文以剖析调速系统失控原因为出发点，立足于中国火电厂实际运行情形，探讨更多实用有效的应对措施，以提升电厂调速系统的可靠度和抗扰动能力。

Abstract

The steam turbine speed control system is an important component of the steam turbine generator set in thermal power plants. Its function is to adjust the unit’s speed in real time and control the steam flow, ensuring stable operation of the unit under grid frequency and load variations. The speed control system involves the coordinated work of multiple links, and its operational stability is closely related to the safety of the unit and the stability of the grid frequency. Especially for large thermal power units, when facing complex load conditions or variable disturbance conditions, speed fluctuations, oscillations, or even unit protection tripping due to speed control system failures often occur. Based on this, this paper starts with analyzing the causes of speed control system loss of control, grounded in the actual operating conditions of China’s thermal power plants, and explores more practical and effective countermeasures to improve the reliability and disturbance resistance of the power plant’s speed control system.

关键词

汽轮机调速 / 失控分析 / 应对措施 / 培训与应急演练

Key words

steam turbine speed regulation / loss of control analysis / countermeasures / training and emergency drills

参考文献

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