Simulation study on effect of two typical UCC systems on response performance of primary frequency regulation and AGC in a supercritical unit

JIN Guoqiang; LIU Aijun; GAO Lin

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Simulation study on effect of two typical UCC systems on response performance of primary frequency regulation and AGC in a supercritical unit

更新时间：2025-09-28

- Simulation study on effect of two typical UCC systems on response performance of primary frequency regulation and AGC in a supercritical unit
- Thermal Power Generation Vol. 42, Issue 10, Pages: 86-90(2013)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM76
- Published：2013
- 稿件说明：
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JIN Guoqiang, LIU Aijun, GAO Lin. Simulation study on effect of two typical UCC systems on response performance of primary frequency regulation and AGC in a supercritical unit[J]. Thermal power generation, 2013, 42(10): 86-90.
DOI：

JIN Guoqiang, LIU Aijun, GAO Lin. Simulation study on effect of two typical UCC systems on response performance of primary frequency regulation and AGC in a supercritical unit[J]. Thermal power generation, 2013, 42(10): 86-90. DOI：

摘要

为了适应电网负荷随时间的波动

机组协调控制系统(CCS)需不断调整机组功率

以保证电网运行的平衡和稳定。为此

以某超临界机组CCS为例

分析了其控制系统的动态特性

通过仿真试验对比了2种典型CCS策略对机组一次调频和自动发电控制(AGC)指令的响应特性。分析结果表明

2种锅炉主控和汽轮机主控的不同组合下

在调频死区和调速不等率一致的情况下

机组对一次调频和AGC指令的响应特性取决于汽轮机主控

机组主蒸汽压力连续变化量则取决于锅炉主控;在小扰动情况下可以仅考虑汽轮机主控的影响;在较大扰动情况下不同锅炉主控对应的系统参数波动量可能超过压力控制死区

引起汽轮机主控输出的变化

使系统的输出受到较大影响。

Abstract

Aiming at adapting to the load fluctuation in power grid

the unit coordinated control(UCC)system frequently regulates the power of each generation unit to ensure the equilibrium and stability of power grid.Thus

the UCC system of a supercritical unit was taken as the research object to conduct investigation on its dynamic characteristics.Through simulation experiment

the response characteristics of two typical UCC strategies to primary frequency regulation and automatic generation control(AGC)were compared.The results showed that

with two different combinations of boiler master control system and turbine master control system

when the dead band and speed drop were constant

the continuous variation of main steam pressure mainly depended on the boiler master control system;when small disturbance occurred

the main factor was the turbine master control system;while in large disturbance condition

the fluctuations of different boiler master control systems' parameters may exceeded the pressure control dead band

causing change of the turbine master control system's outputs

which will affect the system output seriously.

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Related Institution

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