APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT

DU Yansheng Shanxi Electric Power Research Institute

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APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT

Thermal Power Generation Vol. 41, Issue 8, Pages: 75-78(2012)

更新时间：2025-09-28

- APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT
- 作者机构：
  
  山西电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.6
- Published：2012
- 稿件说明：
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DU Yansheng Shanxi Electric Power Research Institute. APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT[J]. Thermal Power Generation, 2012, 41(8): 75-78.
DOI：

DU Yansheng Shanxi Electric Power Research Institute. APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT[J]. Thermal Power Generation, 2012, 41(8): 75-78. DOI：

摘要

以轩岗电厂一期超临界2×660MW机组为例

对协调控制系统中给水控制系统的给水泵出力与液力耦合器出力不匹配造成的给水流量波动进行了分析和改进

提出了基于模糊自适应PID的给水控制策略

即应用模糊推理建立PID的比例系数(Kp)、积分系数(Ki)、微分系数(Kd)与给水流量偏差e及其偏差变化率Δe之间的模糊关系

根据不同的e和Δe在线调整Kp、Ki、Kd。给水控制系统改进后

使被控对象具有良好的动、静态特性及鲁棒性

给水流量稳定

能够满足机组负荷变化的要求。

Abstract

In order to eliminate the feed-water flow fluctuation caused by mismatch of the output of feed-water pump and that of the hydraulic coupler in feed-water control of the coordinated control system

for a 2×660 MW supercritical unit of the first phase of Xuangang Power Plant

the feed-water control strategy based on fuzzy self-adaptive PID was put forward

that is

building relationships between three regulation parameters namely Kp

Ki and Kd of the PID and the flow deviation e of the feed-water and its varying rate Δe by using fuzzy reasoning

and then adjusting Kp

Ki and Kd according to different e's and Δe's.Results show that

regulation system of the improved feed-water control system has good dynamic

static characteristic and robustness

the feed-water flow is stable.Therefore

the modified system can satisfy the requirement of unit load variation.

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