DESIGN OF CONTROL LOGIC FOR PUTTING TWO STEAM-DRIVEN FEED-WATER PUMPS OF SUPERCRITICAL 660 MW UNIT INTO PARALLEL OPERATION OR STOPPING ONE FROM SERVICE

LI Tiecang1; QIN Zhiguo2; BAI Jingping2 1.Department of Power Engineering

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DESIGN OF CONTROL LOGIC FOR PUTTING TWO STEAM-DRIVEN FEED-WATER PUMPS OF SUPERCRITICAL 660 MW UNIT INTO PARALLEL OPERATION OR STOPPING ONE FROM SERVICE

更新时间：2025-09-28

- DESIGN OF CONTROL LOGIC FOR PUTTING TWO STEAM-DRIVEN FEED-WATER PUMPS OF SUPERCRITICAL 660 MW UNIT INTO PARALLEL OPERATION OR STOPPING ONE FROM SERVICE
- Thermal Power Generation Vol. 41, Issue 1, Pages: 69-73(2012)
- 作者机构：
  
  1. 山西电力职业学院动力工程系
  2. 大同发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2012
- 稿件说明：
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LI Tiecang1, QIN Zhiguo2, BAI Jingping2 1.Department of Power Engineering. DESIGN OF CONTROL LOGIC FOR PUTTING TWO STEAM-DRIVEN FEED-WATER PUMPS OF SUPERCRITICAL 660 MW UNIT INTO PARALLEL OPERATION OR STOPPING ONE FROM SERVICE[J]. Thermal power generation, 2012, 41(1): 69-73.
DOI：

LI Tiecang1, QIN Zhiguo2, BAI Jingping2 1.Department of Power Engineering. DESIGN OF CONTROL LOGIC FOR PUTTING TWO STEAM-DRIVEN FEED-WATER PUMPS OF SUPERCRITICAL 660 MW UNIT INTO PARALLEL OPERATION OR STOPPING ONE FROM SERVICE[J]. Thermal power generation, 2012, 41(1): 69-73. DOI：

摘要

针对大同发电有限责任公司超临界660MW机组在负荷变化时给水系统2台汽动给水泵并列运行(并泵)或解列至单台运行(退泵)过程中造成给水流量大幅波动的问题

基于10号机组的特性设计了汽动给水泵自动并泵和退泵控制逻辑

并进行了并泵和退泵控制试验。按此控制逻辑

在并泵过程中

锅炉给水流量波动20t/h

退泵过程中

锅炉给水流量波动55t/h

表明汽动给水泵自动并泵和退泵控制逻辑能够满足给水系统的控制要求

保证了机组的安全、稳定运行。

Abstract

Directing against the problem concening large fluctuation of feed-water flow resulted from the process of automatically putting two steam-driven feed-water pumps into parallel operation or stopping one from service during the time of load variation for supercritical 660 MW unit in Datong Power Generation Co Ltd

a control logic for solution of said problem has been designed on the basis of characters of unit no.10

and a control test for said pump's operation being carried out.According to this control logic

the fluctuation of feed-water flow into the boiler is less than 20 t/h during the time of putting two said pumps into parallel operation

and the fluctuation of feed-water flow into the boiler is less than 55 t/h in the event of one pump being stooped.It shows that the said control logic can satisfy the control requirement of the feed-water system

ensuring safety and stability in operation of unit.

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