New definition of electric power equipment
Wire widely used metal accessories of iron or aluminum, collectively referred to as gold. There are many kinds of gold tools with different uses, such as all kinds of wire clamps for wire installation, all kinds of hanging rings for insulator string, all kinds of pressure pipes for wire connection, repair pipes, various types of spacer rods on split wires, etc. In addition, there are all kinds of wire pulling tools for tower, and used for protecting the size of wire, which must be coordinated with each other.
Most of the equipment in operation need to withstand a large tensile force, and some also ensure good electrical contact, it is related to the safety of the wire or tower, even if a damage, may cause line failure. Therefore, the quality, proper use and installation of the hardware have a certain impact on the safe transmission of the line.
Tungsten is an irreplaceable basic material and strategic resource in our national economy and modern national defense. Tungsten carbide rotary file, with high hardness and excellent wear resistance, is used to manufacture a variety of cutting tools, tools, drilling tools and wear-resistant parts, widely used in military, aerospace, mechanical processing, metallurgy, oil drilling,
High voltage direct current (HVDC) technology, since its rise in the 1950s, has experienced more than 40 years of development, has become an increasingly mature technology. By 1995, 62 HVDC projects had been successfully put into operation in the world, and it is expected that about 20 more HVDC projects will be put into operation by 2002.
This paper introduces the development of 1 000 kV ultra high voltage transmission relay protection and monitoring technology in foreign countries, and puts forward some technical problems to be studied in this field. This paper presents a relay protection and monitoring system platform for substation based on IEC 61850 standard. This platform can adapt to the characteristics of UHV transmission and has strong real-time performance. It is an information platform that integrates relay protection, emergency control and system stability.
The tower and pole test station built by Electric Power Construction Research Institute in 2004 carried out the prototype strength test of UHV single loop 8×800 split conductor, 30 ° ~60 ° Angle tower and UHV transmission line anti-vibration design scheme.