《发电机交流耐压试验作业指导书》由会员分享，可在线阅读，更多相关《发电机交流耐压试验作业指导书（10页珍藏版）》请在金锄头文库上搜索。
1、Rev.Date Compiled byReview ApprovalWork Instruction for Generator HV Withstand TestDocument NoKTPP-0-SEPS-COM-WI-4009PROJECT4x350 MW Kamalanga Thermal Power ProjectOWNERGMR卡玛朗加能源有限公司GMR KAMALANGA ENERGY LIMITEDOWNERs ENGINEER拉玛雅国际咨询有限公司LAHMEYER INTERNATIONAL (INDIA) PVT. LTD.CONSULTING ENGINEERS,GUR
2、GAONEPC CONTRACTOR山东电力基本建设总公司SEPCO ELECTRIC POWER CONSTRUCTION CORPORATIONSUB CONTRACTOR 1. 工程概况Brief introduction of the project卡玛朗加火力发电厂由GMR能源有限公司在现场兴建，该位置位于印度奥里萨邦德赫克纳尔区。该项目为新建工程，包括四台机组，每台机组容量为350MW。本工程采用东方电机股份有限公司生产的三相发电机，额定功率350MW，功率因数0.85，端电压20kV，频率50Hz，转速为3000rpm。汽轮发电机采用水-氢-氢冷却方式。The Kamalanga
3、 Thermal Power Station would be set up by GMR kamalanga Energy Limited at a site, which falls under the Dhenkanal district of Orissa, India. The project is a Greenfield project consisting of four units each of 350 MW. The generators proposed for the plant are of three phase, manufactured by DFEM, wi
4、th the rated power of 350MW, power factor of 0.85 lagging, terminal voltage of 20kV, frequency of 50Hz and speed of 3000rpm. The turbine generator adopts the typical water-hydrogen-hydrogen cooling system.2 编制依据References of the compilation下列文件中的条款通过本作业指导书的引用而成为本作业指导书的条款。The prescriptions in the doc
5、uments listed below are included in this work instruction by quotation.2.1）GB 50150-2006 电气设备交接试验标准；GB50150-2006 Standard for hand-over test of electric equipment ;2.2)DL5009.1-2002 电力建设安全工作规程DL5009.1-2002 Safety work regulations of electric power construction2.3）QFSN-300-2-20型汽轮发电机安装说明书 QFSN-300-2-
6、20 Turbine generator installation manual3 试验项目及程序Testing items and progress3.1）试验项目 Testing items）定子绕组的绝缘电阻、吸收比、极化指数测量。 Measurement of IR、Absorptance、Polarization index of stator winding.）定子绕组端部现包绝缘施加直流电压测量。DC HV test of generator stator winding overhang handmade insulation.）定子绕组直流耐压试验和泄漏电流测量。Stator
7、 winding DC HV test and measurement of leakage current.）定子绕组交流耐压试验。AC HV test of stator winding.3.2）试验程序 Test program）试验开始之前详细记录试品的铭牌参数，检查、了解试品的状态，并进行记录。Record the parameters on nameplate in details before test, inspect the condition of the materials being tested, and make records.）按先低压试验后高压试验、先直流后交
8、流的顺序进行试验。在绝缘电阻测量无异常后再进行耐压试验。交流耐压试验后重复测试绝缘电阻，以判断耐压试验前后试品的绝缘有无变化。The LV test shall be carried out prior to HV test, and DC test shall be carried out before AC test. The withstand voltage test shall be carried out after measuring the insulted resistance. Test the insulted resistance again after AC with
9、stand voltage test, so as to know the difference of insulated status of tested pieces before and after test.4. 施工准备Construction preparation4.1）水内冷发电机专用绝缘电阻测试仪、温度计、湿度计。 Special IR tester for water cooling generator、Thermometer、Hygrometer.4.2）直流高压发生装置。DC high voltage generator.4.3）成套工频交流耐压装置。Power fre
10、quency AC withstand voltage device.）试验变压器高压侧额定电流 In应大于试品所需电流Ix，其中Ix可按下式估算：Ix=2fCxUx2.5A（f试验电源频率50Hz，Cx被试绕组对地等效电容0.225*10-6F，Ux试验电压32800V）The rated currentIn on high-voltage side of the test transformershould be greater than current Ix required by the test product,whereIxcan be estimated as follows:I
11、x = 2fCxUx 2.5A(f-testpower supply frequency 50Hz, Cx-trialwinding on equivalent capacitance of0.225 * 10-6FUx-testvoltage32800V)）试验变压器，容量可按下式计算：S2fCxUx2 80kVA（f试验电源频率50Hz，Cx被试绕组对地等效电容0.225*10-6F，Ux试验电压32800V）Test transformer capacity can be calculated as follows:S2fCxUx280kVA(f-testpower supply fre
12、quency of50Hz, Cx-trialwinding to ground the equivalent capacitance of0.225 * 10-6F theUx-testvoltage32800V)）调压器，容量与试验变压器匹配。Regulator, capacity match with the test transformer.5施工工艺流程Construction process5.1）定子绕组的绝缘电阻、吸收比、极化指数测量。Measurement of IR、Absorptance、Polarization index of stator winding.）测量并记
13、录环境温度和湿度。Measure and record the ambient temperature and humidity.）将汇水管用导线引至试验场地，把汇水管所有引下线拧在一起，用万用表测量汇水管对地电阻，应大于30k。将汇水管引线接至专用兆欧表的屏蔽端子上。Leading the cooling water pipe by wire to the test site, all of deflectors of cooling water pipe screwed together; measure cooling water pipe resistance to ground wi
14、th the multimeter, which should be greater than30k.Leading cooling water pipe conductors to the shield terminal on dedicated megger.）分相测量，每相绕组必须头尾短接，并将非被试绕组、转子绕组接地。Take sub-phase measurements, each phase winding must be head to tail by short joint and ground the winding not to be tested and rotor wi
15、nding.）将地线端子用接地线和发电机外壳连接好，用绝缘把手将测试线接触到被测量绕组的引出端头上，开始测量，记录15s、60s、600s的绝缘电阻值。The earth terminal shall be connected with the ground line and the generator casing, use insulating handle to contact the test line to the leading end of the head of the measuring winding, start the measurement, recording15s, 60s, 600s,insulation resistance value.）各相绝缘电阻的不平衡系数2（不平衡系数=最大值/最小值）。The unbalance factor of insulation re
