Observer-based PID Control of Superheated Steam Temperature in an Ultra-supercritical Unit Under Flexible Operation

PANG Dawei; QIN Tianmu; DU Ming; NIU Yuguang

doi:10.19805/j.cnki.jcspe.2025.240350

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Observer-based PID Control of Superheated Steam Temperature in an Ultra-supercritical Unit Under Flexible Operation

更新时间：2026-10-10

- Observer-based PID Control of Superheated Steam Temperature in an Ultra-supercritical Unit Under Flexible Operation
- Chinese Journal of Power Engineering Vol. 45, Issue 8, Pages: 1290-1298(2025)
- 作者机构：
  
  1. 华北电力大学新能源电力系统全国重点实验室,北京,102206
  2. 北京怀柔实验室,北京,101400
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240350
  CLC：
- Online First：12 August 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
庞大卫,秦天牧,杜鸣,牛玉广. 超超临界机组灵活运行下基于观测器的PID过热汽温控制动力工程学报, 2025, 45(8): 1290-1298 https://doi.

org/10.19805/j.cnki.jcspe.2025.240350
庞大卫,秦天牧,杜鸣,牛玉广. 超超临界机组灵活运行下基于观测器的PID过热汽温控制动力工程学报, 2025, 45(8): 1290-1298 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240350.

org/10.19805/j.cnki.jcspe.2025.240350 DOI：

摘要

为消纳更多可再生能源

火电机组长期处于宽负荷运行

频繁的负荷变化给过热汽温控制造成困难。以某1 000 MW超超临界机组过热汽温为对象

分析了其动态特性在不同负荷下的差异。针对宽负荷运行带来的多模型特性与非线性特性

提出了一种基于观测器的比例积分微分(observer-based proportional-integral-derivative

OB-PID)控制结构

以增强过热汽温在宽负荷运行时的稳定性。仿真结果表明

相比于常规比例积分微分(proportional-integral-derivative

PID)控制

OB-PID控制能在保持较好跟踪性能的同时

提高系统的扰动抑制性能和鲁棒性能。此外

OB-PID控制具有极简的结构

基于PID框架的改进不增加额外的信号测点

在火电机组灵活性改造中具有极大的应用潜力。

Abstract

In order to consume more renewable energy

thermal power units have been operating under wide load condition for a long time

and the frequent load changes have caused some difficulties in superheated steam temperature control. Taking the superheated steam temperature of a 1 000 MW ultra-supercritical unit as a research object

the differences of its dynamic characteristics under different loads were analyzed. Meanwhile

an observer-based proportional-integral-derivative (OB-PID) control structure was proposed to enhance the stability of superheated steam temperature of the unit in wide load operation

which was characterized by multi-model and nonlinearity. Simulation results show that

compared with the conventional PID control

OB-PID control not only can maintain better tracking performance

but also can improve the disturbance rejection performance and robustness of the system. In addition

OB-PID control has an extremely simple structure

and the improvement based on PID framework does not add additional signal measurement points

which has a great potential application in flexibility retrofit of thermal power units.

关键词

Keywords

references

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