高原及盐污等特殊环境下的电气设计研究

发布时间：2018-06-17 14:56

本文选题：高海拔 + 外绝缘　；参考：《广西大学》2014年硕士论文

【摘要】：青海盐湖集团综合利用项目二期供热中心工程,是为中国最大的钾肥生产基地供电的电厂,位于青海省格尔木市察尔汗盐湖地区,厂址海拔高、盐污重,为保证电厂能长期在这种特殊环境中安全可靠地运行,必须对设备的外绝缘水平及防腐能力提出更高的要求。电气设计目的和关键在于,对设备的外绝缘水平进行海拔修正,选择出绝缘匹配的设备,设备和材料采取适合的抗腐蚀措施等。为达到该设计目的,调查了该地区电气设备的运行情况及存在的问题,分析了多个现行规程规范的计算方法,用电气设备的耐压试验数据进行验证对比,参考成熟品牌电气设备的技术参数和选型建议,结合技术及经济因素进行计算分析和结果对比。经过验证对比,选择出合适的海拔修正系数,确认各电压等级的各类电气设备的耐受电压、电气间隙、爬电距离及安全净距等绝缘配合的参数,提出设备耐污的要求,并采用可靠的电气设备及材料的防腐保护措施,最终确认合理的电气设备型式及电气系统设计方案。该设计研究成果避免了工程运行过程中因绝缘水平不足或防腐措施不力而造成安全事故的情况,解决了因绝缘水平过高或防腐措施过度而增加投资及运行成本等问题,达到技术及经济性能的最佳结合,并通过了实际运行的检验,可为同类工程的电气设计提供参考。
[Abstract]:The second phase heating center project of Qinghai Salt Lake Group Comprehensive Utilization Project is a power plant that supplies power to China's largest potash production base. It is located in the Chaerhan Salt Lake area of Golmud City, Qinghai Province, with a high altitude and heavy salt pollution. In order to ensure that the power plant can operate safely and reliably in this special environment for a long time, higher requirements must be put forward for the external insulation level and anticorrosion ability of the equipment. The purpose and key of electrical design are to modify the level of external insulation of the equipment above sea level, to select the equipment with insulation matching, and to take appropriate anti-corrosion measures for the equipment and materials, etc. In order to achieve the purpose of the design, the operation situation and existing problems of electrical equipment in this area are investigated, and the calculation methods of several current specifications are analyzed and compared with the test data of electrical equipment withstand voltage. With reference to the technical parameters and selection suggestions of the mature brand electrical equipment, combined with the technical and economic factors, the calculation and analysis are carried out and the results are compared. After verification and comparison, the appropriate altitude correction coefficient is selected to confirm the insulation coordination parameters of all kinds of electrical equipment of each voltage grade, such as withstand voltage, electrical gap, creeping distance and safe net distance, and put forward the requirements of equipment for anti-fouling. And adopt reliable anticorrosion protection measures of electrical equipment and materials, and finally confirm the reasonable electrical equipment type and electrical system design plan. The design research results avoid the safety accidents caused by insufficient insulation level or poor anticorrosion measures in engineering operation, and solve the problems of increasing investment and operation cost due to high insulation level or excessive anticorrosion measures, etc. The best combination of technical and economic performance has been achieved, and the test of practical operation has been passed, which can provide reference for the electrical design of similar projects.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM502

【参考文献】