PROBLEMS OCCURRED FROM ADDITIONALLY INSTALLING HIGH-VOLTAGE FREQUENCY CONVERTER ONTO CONDENSATE PUMPS AND SOLVING MEASURES THEREOF

LI Jun1; LI Jian-he1; HUANG Li-li21.Huaibei Guo'an Electric Power Co Ltd

doi:10.19666/j.rlfd.2008.12.025

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PROBLEMS OCCURRED FROM ADDITIONALLY INSTALLING HIGH-VOLTAGE FREQUENCY CONVERTER ONTO CONDENSATE PUMPS AND SOLVING MEASURES THEREOF

更新时间：2025-09-28

- PROBLEMS OCCURRED FROM ADDITIONALLY INSTALLING HIGH-VOLTAGE FREQUENCY CONVERTER ONTO CONDENSATE PUMPS AND SOLVING MEASURES THEREOF
- Thermal Power Generation Vol. 37, Issue 12, Pages: 96-98(2008)
- 作者机构：
  
  1. 淮北国安电力有限公司
  2. 淮北发电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.12.025
  CLC： TM621.7
- Published：2008
- 稿件说明：
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LI Jun1, LI Jian-he1, HUANG Li-li21.Huaibei Guo'an Electric Power Co Ltd. PROBLEMS OCCURRED FROM ADDITIONALLY INSTALLING HIGH-VOLTAGE FREQUENCY CONVERTER ONTO CONDENSATE PUMPS AND SOLVING MEASURES THEREOF[J]. Thermal power generation, 2008, 37(12): 96-98.
DOI：

LI Jun1, LI Jian-he1, HUANG Li-li21.Huaibei Guo'an Electric Power Co Ltd. PROBLEMS OCCURRED FROM ADDITIONALLY INSTALLING HIGH-VOLTAGE FREQUENCY CONVERTER ONTO CONDENSATE PUMPS AND SOLVING MEASURES THEREOF[J]. Thermal power generation, 2008, 37(12): 96-98. DOI： 10.19666/j.rlfd.2008.12.025.

摘要

高压变频器有着优良的调节性能和显著的节能效果。随着其价格的下降以及质量的提高

被越来越多的发电厂用于凝结水泵的变频改造

但是由于凝结水泵的特殊性

变频改造后出现了一拖二运行方式失电事故状态下无法起动备用泵、变频泵跳闸时除氧器水位失控、异常工况下给水泵密封水差压保护动作等新问题。为此

对改造后出现的问题进行了详细分析

提出了相应的解决方案。

Abstract

The high-voltage frequency converter has exellent regulating performance and obvious energy-saving effect.Along with decreasing its price and enhancing its quality

it has been adopted by more and more power plant to variable frequency retrofit for condensate pumps

but new problems after retrofit

such as the standby pump can't be started up under condition of losing power in operation mode of "one driving two"

and the water-level in deaerator lost control during the time of tripping the pump retrofitted to use variable frequency

and actuation of differential pressure protection for feed-water pump's sealing water under abnormal condition etc.

have occurred.For these

the problems occurred after retrofit have been analysed in detail

and corresponding solving measures being put forward.

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