1000kV交流特高压线路带电作业安全防护研究

为确保1000 kV交流特高压输电线路带电作业的安全进行,进行了安全防护研究。根据1000kV交流特高压线路电压等级高、空间场强大的特点,研制了1000kV带电作业屏蔽服,并按照标准对屏蔽服的衣料和成品性能进行了测试。根据线路实际,进行了登塔过程中人体不同部位的电场强度和等电位时人体不同部位的电场强度及流经人体电流的测量,并进行了进入等电位拉弧试验和脉冲电流测量。研究结果表明,研制的屏蔽服满足带电作业安全防护要求,带电作业时作业人员应穿戴全套屏蔽服,进出等电位时应使用电位转移棒。

Research of Safety Protection for Live Working on 1000 kV Ultra High Voltage Transmission Line

To ensure the safety of live working on 1000kV transmission lines, safety protection is researched in this paper. Because of the high voltage and strong space electrical field intensity of the 1000kV Ultra High Voltage transmission lines, it is very important and necessary to do research on the safety protection for live working on 750 kV transmission lines. In this paper, according to the practical conditions of the lines, suitable full set screening clothes were developed, and then characteristics of material that the screening clothes made of and the ready-to-wear were tested following corresponding national standards of GB 6568.1-2000 and GB 6568.2-2000. In response to the line condition, measuring of electrical field intensity in and outside of screening clothes at different part of body while climbing tower and during equal-potential process, and arc test and impulse current measuring while during equal-potential process are also taken. The tests' results indicated that the screening clothes developed had good performances on electrical field screening, current splitting and voltage sharing, thus met the requirements for the safety protection of human body while live working on 750 kV transmission lines. Based on the research work, conclusions can be drawn that to ensure the safety of live working, persons doing live working should wear full set screening clothes and use potential rod during equal-potential process.