Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit

XUE Zhaonan; YANG Rongzu; WANG Ting; GU Weiwei; GAO Qing; ZHANG Yonghai

doi:10.19666/j.rlfd.201801029

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Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit

更新时间：2025-09-28

- Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit
- Thermal Power Generation Vol. 47, Issue 5, Pages: 101-105(2018)
- 作者机构：
  
  西安西热节能技术有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201801029
  CLC： TK262
- Published Online：03 May 2018，
  
  Published：2018
- 稿件说明：
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XUE Zhaonan, YANG Rongzu, WANG Ting, et al. Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit[J]. Thermal power generation, 2018, 47(5): 101-105.
DOI：

XUE Zhaonan, YANG Rongzu, WANG Ting, et al. Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit[J]. Thermal power generation, 2018, 47(5): 101-105. DOI： 10.19666/j.rlfd.201801029.

摘要

针对供热机组热电耦合、对电网深度调峰适应性差的问题

在对比分析典型汽轮机旁路供热改造方案技术特点的基础上

以东北地区某超临界350 MW供热机组为研究对象

分析了汽轮机高低旁路联合供热方案对机组供热能力和电调峰能力的影响。结果表明:20%THA工况下

采用原高低旁路联合供热方案时汽轮机最大供热负荷为154.96 MW

扩容后汽轮机最大供热负荷为336.53 MW

较扩容前提升了117.2%

大幅提高机组的低负荷供热能力

满足机组深度调峰的改造要求;额定工况下

采用原高低旁路联合供热方案时汽轮机最大供热负荷为485.08 MW

扩容后汽轮机最大供热负荷为492.17 MW

说明高低旁路扩容对机组额定工况抽汽供热能力影响有限。

Abstract

Aiming at the poor adaptability of thermoelectric coupling of heating units to the depth peak regulation of power grid

taking a supercritical 350 MW heating unit in the northeast area as the research object

the effects of the scheme of HP-LP bypass system combining with heating on the heating capacity and the peak regulation capacity of the unit are analyzed based on a comparative analysis of the technical characteristics of the typical turbine bypass heating reconstruction scheme in this study. The results indicate that

for the original HP-LP bypass system combing with heating

the maximum heating load of turbine is 154.96 MW under 20%THA condition. After the expansion of turbine

the maximum heating load raises to 336.53 MW

which is 117.2% higher than that before expansion. It greatly improves the heating capacity of units under low load and meets the requirements for the unit's deep peak regulation. Under rated conditions

the maximum heating load of the turbine is 485.08 MW when using the original HP-LP bypass system combining with heating and 492.17 MW after the expansion. This indicated that the expansion of HP-LP bypass system combining with heating has limited influence on the extraction heating capacity of the unit under rated conditions.

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