白锦

[摘    要]电力系统由发电、变电、输电、配电、用电等环节组成，其中变压器是一个十分重要的元件，它的安全运行对电力系统起着十分重要的作用。变压器在运行过程中，绕组中的铜耗和铁芯中的铁耗都转变为热能，使变压器各个部分的温度升高，变压器的使用寿命主要由绝缘老化程度决定，绝缘老化主要是由温度变化造成的。在大容量油浸变压器中，主要采用自然油循环风冷、强迫油循环风冷和强迫油循环水冷三种冷却方式，其中绝大部分采用自然油循环风冷和强迫油循环风冷冷却方式。变压器风冷智能控制柜就是针对着三种冷却方式而设计的智能型控制柜。

[关键词]冷却器;报警;变压器;试验;控制模式

[中图分类号]TM403.9 [文献标志码]A [文章编号]2095–6487（2021）11–00–04

Analysis of the Application and Commissioning of Intelligent Transformer Cooler

Bai Jin

[Abstract]The power system is composed of power generation， power transformation， power transmission， power distribution and power consumption， among which the transformer is a very important element， and its safe operation plays a very important role in the power system.During the operation of the transformer， the copper consumption in the winding and the iron consumption in the iron core are changed into heat energy， raising the temperature of each part of the transformer. The service life of the transformer is mainly determined by the degree of insulation aging， and the insulation aging is mainly caused by the temperature change.In the large-capacity oil immersed transformer， three main cooling methods， forced oil circulating air cooling， most of which adopt natural oil circulating air cooling and forced oil circulating air cooling methods.Transformer air cooling intelligent control cabinet is an intelligent control cabinet designed for the three cooling modes.

[Keywords]cooler; alarm; transformer; test; control mode

1 概述

豐满重建工程六台机组选用型号为SFP-240000/500的三相变压器，额定容量240 000 kVA，额定电压为（×2.5%）/15.75 kV，额定功率为50 Hz，联接组标号YNd11，短路阻抗15 %，中性点接地方式为直接接地，主变冷却器选用风冷冷却器，冷却器在机组开机同期合闸成功后自动启动，通过负荷、油温来控制备用冷却器的投入与退出。经调试发现，变压器在冬季运行时，冷却器的油流继电器因北方温度太低，造成油凝无法冲开油流继电器，在运行过程中可能会出现冷却器全停跳机的危险。因此，冬季运行需退掉油流继电器的干节点，经提议厂家设计经硬压板控制是否采集油流节点反馈，并应用于现场冷却器控制柜中。

JY-BQFK智能型变压器冷却……