直流电阻测验实验现场数据处理和剖析

时间： 2024-01-29 来源：Delta United Instrument官网

直流电阻测验实验是变压器、电抗器等线圈类设备既简洁又重高频耐压测试仪要的一个实验项目。在直流电阻测验仪现场进行直流电阻测验时，影响测验成果的要素许多，如分接开关接触不良，测验时高频耐压测试仪的温度，充电时刻，丈量接线，感应电压，套管中引线和导电杆接触不良等，都会形成三相电流不平衡。HZ210直流电阻测验仪测验成果相关数据处理和剖析办法。

1、相间差

直流电阻线间差或相间差百分数的计算，可按下式进行：

其中△Rx为直流电阻线间差或相间差的百分数，Rmax为三线或三高频耐压测试仪相直流电阻实测值的较大值，Rmin为三线或三相直流电阻实测值的较小值，Rp为三线或三相直流电阻实测值的平均值。

2、温度影响

直流电阻与温度成正相关关系，不同油温下的直流电阻不同。为了与出厂及每次丈量的数据比较，应将不同温度下丈量的直流电阻换算到同一温度，以便比较。

3、接线方法影响

关于变压器三相绕组Y衔接无中性点引出线或变压器三相绕组?衔接，当三相线电阻不平衡值超过规范时，则需将线电阻换算成相电阻，以便找出缺陷相。

4、分接开关影响

在对有载调压变压器进行丈量时，若遇丈量成果不正确，依据1→n所有分接方位的直流电阻，找出规则，判别是否由有载开关内部的高频耐压测试仪切换开关，选择开关，极性开高频耐压测试仪关接触不良引起的，或是某一档的引线松动形成的。

5、接触不良影响

变压器套管中导电杆和内部引线如果接触不良，形成接头发热现象，能够结合红外成像来剖析其发热的部位。

6、断线影响

三角形衔接的变压器绕组，若其中一相断线，没有断线的两高频耐压测试仪相线端电阻值为正常的1.5倍，而断线相端电阻值为正常值的3倍。

7、变压器经受近区出口短路后测验成果应与历史数据进行比对

对直流电阻进行判别剖析时，有规范值的按规范值进行判别，若比较成果虽未超支，但每次丈量数值都有所增加，这种情况也须引起注意;此外高频耐压测试仪还需进行“纵横”比较，在设备未明确规定较低值的情况下，将成果与有关数据比较，包含同一设备的各相的数据，同类设备间的数据，同容量高频耐压测试仪变压器的相同丈量部位数据，出厂实验数据，经受不良工况前后，与每次同温度下的数据比较等，并结合油色谱剖析等来进行剖析比较，找出毛病原因。

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本文由三年不鸣转载自Delta United Instrument官网，原文标题为:[高频耐压测试仪]直流电阻测验实验现场数据处理和剖析，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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型号- HS302S24015,CMP602S30009Q1,EP20,BV3Q2S24015,EI30-12.5,PQ2625,BV351S06030,BV302D12015-006,AHI SERIES,HS302S12020,AH20056,HS302S12023,AH,HS302S12025,EP10,EP13,BV202D06003A,EP17,BV481S15100,CMP482D1502401,BV201S18003A,CMP482D1001801,BV422S18050-230,BV422S10050-230,POT1411,BV351D06030,AHR4Q309,HS302S12015,BV302D24015A,AHR30318,BV301S12023A,AHR30317,AHR30316,BV202D09005,AHR30315,BV202D09006,AHR30314,AHR30313,AHF02120,AHR30312,AHR30311,AHR30310,POT1408,CMP482S1002401,HS3Q1S18015,BV301D06028A,BV422D10050,BV382DQ9024,BV302S06015A,AHR30309,BV302S15015-006,FMW,BV202S12006,BV202S12005,BV302D15010,BV302D15012,BV302D15015,BV302D15017,XZM-PE1802,BV382S24Q40,BV482S09100,CMP382S0451801,BV202D12006,BV202D12005,BV422S09050,AHR40309,BV302D15018,BV301S24015-006,BV422S10050,AHR40312,XZM-U16100,AHR40311,BV302D15024,XZM-U16101,ACST-255-15,AHR40314,BV302D15023,XZM-U16102,AHR40313,BV301D15028A,XZM-U16103,XZM-U16104,BV302D15028,XZM-U16105,AHR40310,BV302D15027,BV422D12050,BV302D15020,BV302DQ9030,BV382D15024,BV202S10005,XZM-PE1801,CMP482S1001501,AHR40316,AHR40315,FC,AHR40318,BV202S10006,AHR40317,BV202D24006,BV301S10015-006,BV302D06015A,BV301S06028A,BV301S18030,BV301S12028A,BV301S18015-006,BV302D09015-006,BV381S0604Q,BV202D24005,CMP482D1501501,BV301S18028,POT3622,BV301S18024,BV302D15006,BV301S18027,HS302S24025,BV301S18020,HS302S24023,CMP382D0321801,BV301S18023,BV351S18030,HS302S24020,BV482S10100,ADH SERIES,BV302S12Q30,BV381S06040,BV302S24015A,BV301S18017,BV301S18018,ADH20020,BV301S18015,ADH20024,BV201S15006,BV301S18010,HS302S09020,BV201S15005,HS302S09023,BV301S18012,AHR50309,BV381S18024,HS302S09015,BV301S06030,CMP482S1501201,ADH20028,BV482D10100,BV302D15015-006,BV301S18006,BV202D24003A,XZM-E19102,AHR50317,XZM-E19100,BV381S18032,E16,XZM-E19101,E19,CMP382S0450901,AHR50318,BV301S06028,BV301D15015-006,BV301S06027,HS301S10023,HS301S10025,HS302S10015,BV301S06024,HS302S09025,BV301S06023,BV302S09015-006,AHR50312,AHR50311,XZM-ED3950,AHR50310,BV301S06020,BV421S10050,ADH20036,_BV302D18006,BV302D10028A,HS301S10020,POT1811,ETD44,E25,ETD49,BV381S18040,BV201D09003A,BV301D15023A,BV382D15040,HS301S09025,BV301S06017,BV382D15032,HS301S10015,BV301S06018,CMP382D0320901,BV301S06012,BV301S06015,BV301S15028A,ADH20048,BV301S06010,BV422D13050-230,CMPXXXXXXXXXXX,ETD34,ADH20056,ACST-257-15,HS301S09015,CMP602D3002401,BV301S06006,HS301S09023,HS301S09020,BV201D09005,BV202D15003A,BV201D09006,BV421D10050,BV422S24050,CMP412D0500601,BV302D10023A,XZM-EC2850,BV202S24005,BV202S24006,CMP602D3001501,BV201D10005,BV201D10006,ETD29,BV302S09015A,HS301S12015,BV351D24030,BV381D18040,BV301D18015A,CMP482S1501001,BV382S10Q40,BV202S12003A,BV302S15028,BV422D18050-230,BV301S06023A,CMP382S0320901,CMP602S3001001,BV381D18032,BV302S15015A,BV302S15030,CMP482D1001201,BV482S12100,BV422D09050,CMP412S0500601,BV302S15018,CMP412D0500901,BV302S15017,ZCT26150,BV202S06003A,BV381D06032,BV301D10015-006,BV351D12030,XZM-EF2051,XZM-EF2050,XZM-EF2052,BV202D10005,BV422S12050,BV202D10006,BV381D18024,EI4118,BV482D09100,HS302S10025,HS302S10023,BV302S15020,EI3023,HS302S10020,BV302D12Q15,BV302S15023,BV302S15024,BV302S15027,BV381D06024,BV421D09050,EI38-15,CMP412S0601001,BV302S15006,BV381D06040,AHF12120,BV482S24100,EI38-10,CMP412D0602401,BV301D24028A,AHR40309XXXX,BV381S09Q40,BV352S15030,BV421S12050,BV302S15010,BV302S15012,CMP382D0451001,ADH200120,PM,BV302S15015,XZM-E16101,XZM-E16102,XZM-E16100,XZM-E16105,XZM-E16106,HS302S18015,XZM-E16103,XZM-E16104,CMP602S3002401,AHF06024,HS302S06023,BV302S09023A,AHF06020,ADH40036,HS302S06025,XZM-E16109,XZM-E16107,XZM-E16108,HS302S18020,BV422D09050-230,XZM-E16112,EE20-10.5,CMP602D3000601,XZM-E16110,XZM-E16111,CMP412D05Q1001,ADH40020,BV302S09006,ADH40028,AHF06034,BV351S12030,ADH40024,AHF06030,BV202D10003A,BV301S24015A,BV421S24050,BV302D12015A,BV302D18027,CMP482S1000901,BV302D18024,BV302D18028,BV301D24023A,XZM-ED3450,CMP382S0321801,PQ4030,BV201S06003A,BV422D15050,GMP482D1500601,BV302D18023,BV302D18020,BV382D18032,BV422D12050-230,BV202S06006,BV202S06005,BV382D18024,ADH40056,AHF06040,CMP482S1501501,CMP412D0501801,ZCT26100,XZM-PE4301,ADH30016,BV382S18040,BV422D24050-230,BV302D18030,BV382D18040,HS302S06020,CMP412S0601201,HS3Q2S15015,AHF06056,HS301S12025,ZCT13050,BV302S10028A,HS302S06015,ADH40048,BV301D12015-006,HS301S12020,CMP382D0451201,ADH30012,ADH30010,HS301S12023,BV301D10028A,BV382S18032,ADH30028,BV301D10023A,EF25,CMP382S0451001,ADH30024,BV301S09015A,BV382S06040,BV302D18015A,ZCT13100-P,ADH30020,EF30,HS301S24015,EF16,BV302D09023A,ADH30036,EF19,ADH600120,BV381D15040,ACST-261-15,BV422S09050-230,BV302S10015-006,BV382S18024,EF20,ADH30048,BV202S15003A,HS301S24020,HS301S24023,BV381D15024,HS301S24025,BV382S06024,BV302D06015-006,BV381D15032,BV301S15015-006,BV201S24003A,AHF06088,CMP412S0501201,BV301D09015A,EF32,HS302S18025,CMP382D0321001,HS302S18023,ADH20010,ZCT13200-P,BV302S18015A,ADH20012,CMP602S3001501,BV382S06032,BV301S15023A,ADH30056,ADH20016,BV351S24030,BV422S15050-230,BV201D06003A,CMP482S1502401,BV301S12030,BV302S12006,AH400120,BV381S24024,CMP382S0451201,BV422D13050,EI3012.-5,BV381S120

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