Overview and status of the relay industry

As a Power Relay Supplier, share with you. The relay, which originated in the mid-to-late 1960s, was initiated by some scholars in Britain, Australia and the United States.

In the mid-1960s, some people proposed the idea of using small computers to realize relay protection. However, because the computer was expensive at the time, and it could not meet the technical requirements of high-speed relay protection, it did not achieve practical applications in protection, but it began. A lot of research on the theoretical calculation method and program structure of computer relay protection has laid a theoretical foundation for the subsequent development of relay protection.

Computer technology made major breakthroughs in the early and mid-1970s, and the rapid development of large-scale integrated circuit technology has brought microprocessors and microcomputers into a practical stage. The sharp drop in price and the substantial increase in reliability and computing speed have led to the emergence of garbage in the study of computer relay protection. In the late 1970s, a relatively complete prototype of microcomputer protection appeared and was put into trial operation in the power system.

19F Relay

In the 1980s, microcomputer protection became more and more mature in terms of hardware structure and software technology, and has been popularized and applied in some countries.

In the 1990s, the power system relay protection technology developed into the era of microcomputer protection, which is the fourth generation in the history of the development of relay protection technology.

From the perspective of China's relay application fields, communications and industrial control and Automotive Relay are still the largest markets for relays. According to the relay market survey report, the largest demand is for general-purpose relays, especially high-sensitivity, small, ultra-small PCB relays, and low-power relays. Judging from the market situation, the relay is a competitive industry with a large volume, wide service area, low technical content, low profit and large market potential.

Although China's relay industry has experienced decades of development, the overall level of the product is still far from the world's advanced level, mainly as follows:

1) The design level is low, the number of military products is low, the environmental adaptability is poor, and the reliability level is low, which cannot fully meet the requirements of weapons and equipment and high-tech operations. The quality of general relays is poor, the variety is updated slowly, and the market share of high-end products is low. It cannot meet the needs of domestic and international markets and cannot completely replace imports.

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2) Low independent development and innovation capacity: The research on common technology is not deep and extensive, the technical force is not fully utilized, and the weak supporting technology is the main reason affecting the speed of new product development.

3) The production process technology is backward, the level of automation is low, and the ability of process control means is worse, which seriously affects the consistency and reliability of product quality and increases service costs.