CN106646283B - 一种确定导磁构件杂散损耗的方法 - Google Patents

一种确定导磁构件杂散损耗的方法 Download PDF

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CN106646283B
CN106646283B CN201710046776.0A CN201710046776A CN106646283B CN 106646283 B CN106646283 B CN 106646283B CN 201710046776 A CN201710046776 A CN 201710046776A CN 106646283 B CN106646283 B CN 106646283B
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CN106646283A (zh
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刘涛
刘兰荣
刘洋
翟志强
刘玉龙
车福来
王伟
张晓光
刘主光
朱承治
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State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Baoding Tianwei Baobian Electric Co Ltd
Wenzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Baoding Tianwei Baobian Electric Co Ltd
Wenzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Abstract

本发明涉及一种确定导磁构件杂散损耗的方法,属于电力变压器电磁测量技术领域。技术方案是:采用仿真计算手段对电磁装置的导磁构件损耗测量结果进行修正。首先采用传统的“负载‑空载”方式测量得到导磁构件损耗,再利用仿真计算手段得到励磁线圈在负载及空载两种工况条件下的损耗差,最后将损耗差计入测量得到的导磁构件损耗测量结果中,从而得到最终损耗数据。本发明的积极效果:通过仿真计算手段,可以较准确的计算得到非导磁材料铜线在两种工况条件下的损耗差,将该损耗差计入测量结果中,可以修正实验测量得到的导磁构件损耗,从而得到更准确合理的损耗数据。

Description

一种确定导磁构件杂散损耗的方法
技术领域
本发明涉及一种确定导磁构件杂散损耗的方法,属于电力变压器电磁测量技术领域。
背景技术
目前,在电磁测量技术领域,电磁装置中导磁结构件的杂散损耗测量存在技术难点,主要在于负载(含导磁结构件)及空载(不含导磁结构件)工况条件下的励磁线圈周围的漏磁场分布会有差异。漏磁场分布的差异会导致励磁线圈在同样激励电流条件下的损耗产生差异,因此,传统的“负载损耗-空载损耗”处理方法得到导磁结构件损耗会产生一定误差。
发明内容
本发明的目的是提供一种确定导磁构件杂散损耗的方法,该方法利用仿真计算手段较准确地获得负载及空载条件下的励磁线圈(不导磁材料)损耗及损耗差,并将该损耗差计入实验测量结果中,通过该方法处理得到的导磁构件杂散损耗相对传统方法提高了准确度,解决背景技术存在的上述问题。
本发明的技术方案是:
一种确定导磁构件杂散损耗的方法,采用仿真计算手段对电磁装置的导磁构件损耗测量结果进行修正:
首先采用传统的负载-空载方式测量得到导磁构件的损耗P t ,再利用仿真计算手段得到励磁线圈在负载及空载两种工况条件下的损耗差δ,最后将损耗差δ计入测量得到的导磁构件损耗测量结果P t 中,从而得到最终损耗数据P
所述采用仿真计算手段对电磁装置的导磁构件损耗测量结果进行修正的具体方法:
励磁线圈可以是一个或由多个组成,在励磁线圈上放置导磁构件;
在施加相同激励电流条件下,分别测量:负载工况条件下,含导磁构件的模型总损耗P load ;空载工况条件下,不含导磁构件的模型总损耗P noload ,两种损耗作差,初步得到结构件的杂散损耗P t ,可表示为:
(1)
所述的模型总损耗,在负载条件下的P load 包含励磁线圈损耗及导磁构件损耗,在空载条件下的P noload 仅为励磁线圈损耗;
P coil_l 为负载工况条件下励磁线圈的实际损耗,P coil_n 为空载工况条件下励磁线圈的实际损耗,即P noload δ为两种工况之间励磁线圈损耗的差值,则可用公式表示为:
(2)
利用电磁场仿真计算软件对电磁模型进行建模仿真,分别计算得到同样激励电流时负载工况条件下励磁线圈损耗P coil_l_cal 及空载工况条件下的励磁线圈损耗P coil_n_cal δ可通过下式得到:
(3)
导磁构件的实际损耗可由测量得到的负载总损耗P load 减掉负载工况下的励磁线圈实际损耗P coil_l 得到,可用公式表示为:
(4)
将(2)式代入(4)式,处理得到的导磁构件损耗P可表示如下:
(5)
P即为最终处理得到的导磁构件损耗,通过仿真计算手段,可以较准确的计算得到非导磁材料铜线在两种工况条件下的损耗差,将该损耗差计入测量结果中,修正实验测量得到的导磁构件损耗,得到更准确合理的损耗数据。
所述的导磁构件,可以是所有具有导磁性能且导电的材料。
本发明可用于任意测量导磁构件损耗的电磁装置中,可得到更准确的损耗测量结果。
本发明的积极效果:通过仿真计算手段,可以较准确的计算得到非导磁材料铜线在两种工况条件下的损耗差,将该损耗差计入测量结果中,可以修正实验测量得到的导磁构件损耗,从而得到更准确合理的损耗数据。
附图说明
图1为本发明电磁实验装置负载工况示意图;
图2 为本发明电磁实验装置空载工况示意图;
图中:导磁构件1、励磁线圈一2、励磁线圈二3。
具体实施方式
下面结合附图和实施例对本发明做进一步的说明:
本发明主要是利用仿真计算手段修正损耗实验测量结果,使测量得到的损耗数据更准确。
首先,在施加相同激励电流的条件下,分别测量负载工况(含导磁构件,如图1)及空载工况(不含导磁构件,如图2)两种工况条件下的总损耗P load P noload ,两个数值按公式(1)作差,得到导磁构件损耗P t
然后,利用仿真计算软件,计算并根据公式(3)得到励磁线圈(励磁线圈2及励磁线圈3)在负载、空载两种工况条件下的损耗差δ
最后,将该损耗差δ计入测量得到的导磁构件损耗P t ,最终得到导磁构件损耗P
所述的导磁构件,可以是所有具有导磁性能且导电的材料。

Claims (1)

1.一种确定导磁构件杂散损耗的方法,其特征在于采用仿真计算手段对电磁装置的导磁构件损耗测量结果进行修正:
首先采用传统的负载-空载方式测量,得到导磁构件的损耗P t ,再利用仿真计算手段得到励磁线圈在负载及空载两种工况条件下的损耗差δ,最后将损耗差δ计入测量得到的导磁构件损耗测量结果P t 中,从而得到最终损耗数据P
采用仿真计算手段对电磁装置的导磁构件损耗测量结果进行修正的具体方法:
励磁线圈是一个或由多个组成,在励磁线圈上放置导磁构件;
在施加相同激励电流条件下,分别测量:负载工况条件下,含导磁构件的模型总损耗P load ;空载工况条件下,不含导磁构件的模型总损耗P noload ,两种损耗作差,初步得到结构件的杂散损耗P t ,可表示为:
(1)
所述的模型总损耗,在负载条件下的P load 包含励磁线圈损耗及导磁构件损耗,在空载条件下的P noload 仅为励磁线圈损耗;
P coil_l 为负载工况条件下励磁线圈的实际损耗,P coil_n 为空载工况条件下励磁线圈的实际损耗,即P noload δ为两种工况之间励磁线圈损耗的差值,则可用公式表示为:
(2)
利用电磁场仿真计算软件对电磁模型进行建模仿真,分别计算得到同样激励电流时负载工况条件下励磁线圈损耗P coil_l_cal 及空载工况条件下的励磁线圈损耗P coil_n_cal δ可通过下式得到:
(3)
导磁构件的实际损耗可由测量得到的负载总损耗P load 减掉负载工况下的励磁线圈实际损耗P coil_l 得到,可用公式表示为:
(4)
将(2)式代入(4)式,处理得到的导磁构件损耗P可表示如下:
(5)
P即为最终处理得到的导磁构件损耗,通过仿真计算手段,可以较准确的计算得到非导磁材料铜线在两种工况条件下的损耗差,将该损耗差计入测量结果中,修正实验测量得到的导磁构件损耗,得到更准确合理的损耗数据。
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