INFLUENCE OF USING OVER SPEED PROTECTION CONTROL OF STEAM TURBINE UPON THE FREQUENCY IN POWER GRID AND COUNTERMEASURES THEREOF

MA Chengxia1; WANG Hongwei1; QIN Rui1; GUO Yufeng3; XIA Yan2; GE Zhiping1; CHEN Lin1 1.Gansu Electric Power Science Research Institute

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INFLUENCE OF USING OVER SPEED PROTECTION CONTROL OF STEAM TURBINE UPON THE FREQUENCY IN POWER GRID AND COUNTERMEASURES THEREOF

更新时间：2025-09-28

- INFLUENCE OF USING OVER SPEED PROTECTION CONTROL OF STEAM TURBINE UPON THE FREQUENCY IN POWER GRID AND COUNTERMEASURES THEREOF
- Thermal Power Generation Vol. 40, Issue 12, Pages: 70-72(2011)
- 作者机构：
  
  1. 甘肃电力科学研究院
  2. 哈尔滨工业大学电气工程及自动化学院
  3. 兰州理工大学电气工程与信息工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM311;TM711
- Published：2011
- 稿件说明：
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MA Chengxia1, WANG Hongwei1, QIN Rui1, et al. INFLUENCE OF USING OVER SPEED PROTECTION CONTROL OF STEAM TURBINE UPON THE FREQUENCY IN POWER GRID AND COUNTERMEASURES THEREOF[J]. Thermal power generation, 2011, 40(12): 70-72.
DOI：

MA Chengxia1, WANG Hongwei1, QIN Rui1, et al. INFLUENCE OF USING OVER SPEED PROTECTION CONTROL OF STEAM TURBINE UPON THE FREQUENCY IN POWER GRID AND COUNTERMEASURES THEREOF[J]. Thermal power generation, 2011, 40(12): 70-72. DOI：

摘要

在孤网运行状态下传统超速保护控制(OPC)由于汽轮机转速的较大波动会使汽轮机调节阀频繁动作

影响电网频率的稳定性。为此

以中间再热式汽轮机为例

建立了多区域单机无穷大系统仿真数学模型。通过对孤网运行状态下不同OPC保护定值对电网频率稳定性影响的仿真

提出了孤网运行状态下发电机组解列时适当提高OPC保护定值的措施

以及在OPC控制逻辑中增加并网、解列、孤网运行3种控制方式的方案。

Abstract

The traditional overspeed protection control(OPC) uner operation state of isolated power grid may make the govener valve of steam turbine to be frequently actuated due to large fluctuation in rotation speed of the steam turbine

affecting the stability of frequency in power grid.For this

taking the reheated steam turbine as example

a mathematical model for emulating the multiregional single machine infinite system has been established

the influence of different set values of OPC upon the stability of frequency in power grid under operation state of isolated power grid has been emulated

the measures of suitably enhancing the set value of OPC during the time of decoupling the units being put forward

and adding three control modes

i.e.synchronizing

decoupling

and isolated grid operation

into the control logic of OPC.

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