Research and application of BEST small steam turbine with small generator operation control strategy

WU Qingyun; GAO Yufeng; HE Yang; WANG Haitao; TAN Xiangshuai; GAO Kui; HE Sheng; GAO Jinghui; MENG Yingqi; YANG Bo; NIU Litao; CHEN Zhigang; LI Hua

doi:10.19666/j.rlfd.202308120

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Research and application of BEST small steam turbine with small generator operation control strategy

更新时间：2025-09-28

- Research and application of BEST small steam turbine with small generator operation control strategy
- Thermal Power Generation Vol. 53, Issue 3, Pages: 126-136(2024)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能秦煤瑞金发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202308120
  CLC： TM621;TP273
- Published：2024
- 稿件说明：
移动端阅览
WU Qingyun, GAO Yufeng, HE Yang, et al. Research and application of BEST small steam turbine with small generator operation control strategy[J]. Thermal power generation, 2024, 53(3): 126-136.
DOI：

WU Qingyun, GAO Yufeng, HE Yang, et al. Research and application of BEST small steam turbine with small generator operation control strategy[J]. Thermal power generation, 2024, 53(3): 126-136. DOI： 10.19666/j.rlfd.202308120.

摘要

为了满足火电机组启动运行的灵活性、高效性及经济性，将抽汽背压式汽轮机（BEST）小汽轮机带小发电机系统（简称BEST系统）应用于双机回热系统机组，根据BEST系统及机组启动方式，结合调试调整试验的启动运行历史过程及数据，进行BEST系统在多方式启动及运行的特性分析试验，优化现有控制逻辑，提出BEST小汽轮机带小发电机运行控制策略。避免了在BEST系统启动顺控、变流器启停顺控、BEST小汽轮机与变流器的无扰切换、燃煤机组辅机故障减负荷（RB）及甩负荷工况中BEST系统缺乏相应控制策略的问题，实现了BEST系统全过程无断点的运行控制。优化后BEST系统运行过程中重要参数保持安全稳定，该控制方法对具备BEST系统的同类型机组具有重要参考意义。

Abstract

In order to achieve the desired flexibility

high efficiency

and cost-effectiveness in the startup and operation of thermal power units

the utilization of the BEST small steam turbine with a small generator for the implementation of a double-turbine reheat system unit is crucial for enhancing the operational economy of the unit. According to the starting mode of the BEST system and unit

combined with the historical process and data of the starting and operation of the debugging and adjustment test

a characteristic analysis test of the BEST system in multi-mode startup and operation was conducted. The existing control logic was optimized

and an operation control strategy for the BEST small steam turbine with a small generator was proposed. The system addresses the issue of lacking control strategies in various aspects

such as the starting and control of the BEST system

converter start-stop control

BEST small steam turbine and converter non-disturbance switching

run back

load dumping conditions

and ensures uninterrupted operation control of the entire process of the BEST system.After optimization

the crucial parameters of the BEST system remain secure and stable during operation. The control method holds significant reference value for similar units equipped with the BEST system.

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