Super capacitor aided fast frequency modulation technology of coal-fired unit

WANG Wei; CHEN Gang; CHANG Dongfeng; WU Pengyue; GAO Lin; KOU Shuichao; WANG Qian

doi:10.19666/j.rlfd.202003091

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Super capacitor aided fast frequency modulation technology of coal-fired unit

Thermal Power Generation Vol. 49, Issue 8, Pages: 111-116(2020)

更新时间：2025-09-28

- Super capacitor aided fast frequency modulation technology of coal-fired unit
- 作者机构：
  
  1. 西安西热节能技术有限公司
  2. 西安热工研究院有限公司
  3. 华能(苏州工业园区)发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202003091
  CLC： TM621
- Published：2020
- 稿件说明：
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WANG Wei, CHEN Gang, CHANG Dongfeng, et al. Super capacitor aided fast frequency modulation technology of coal-fired unit[J]. Thermal Power Generation, 2020, 49(8): 111-116.
DOI：

WANG Wei, CHEN Gang, CHANG Dongfeng, et al. Super capacitor aided fast frequency modulation technology of coal-fired unit[J]. Thermal Power Generation, 2020, 49(8): 111-116. DOI： 10.19666/j.rlfd.202003091.

摘要

超级电容具有功率密度大、充放电速度快、循环寿命长等特点。为经济有效地提升深度调峰下火电机组一次调频响应能力

本文提出了一种超级电容辅助优化一次调频方案。基于目前电网调频需求以及机组调频能力

分析机组所需要的超级电容功率以及容量。结果表明:通过合理的电容选择与连接控制

可以实现主蒸汽调节阀的运行开度进一步提高

机组煤耗降低1.0 g/(kW·h)左右

节能收益显著

4.3年可收回成本。本文技术可应用于火电机组一次调频优化及提高机组灵活性等技术改造项目。

Abstract

Super capacitor is an energy storage device with high power density

fast charging and discharging speed and long cycle life. Aiming to effectively and economically improve the responsiveness of primary frequency modulation of thermal power unit under deep peaking

the scheme of primary frequency modulation technology of super capacitor assistant is proposed. Based on the current demand of power grid frequency modulation and primary frequency modulation capability of the power units

the power and capacity of super capacitor needed by unit are analyzed. The result shows that

through reasonable selection

connection and control

the operation opening of main steam regulating valve can be increased further

and the coal consumption can reduce by about 1.0 g/(kW·h). The economic benefit is considerable

and the project investment can be recovered within 4.3 years. The super capacitor aided technology in this study can be applied to the optimization of primary frequency modulation of thermal power units and the technological transformation projects of improving the flexibility of thermal power units.

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