The current rapid development of digitization, networking and informatization has brought huge market demand to China's communication relay industry. Under such circumstances, international relay manufacturers have increased their investment in China and moved the production lines of high-end communication relays to China. Faced with such a situation, China's national communication relay industry urgently needs to optimize the industrial structure, upgrade product grades, and create national brands.
In the field of relay production, communication relays, especially the third and fourth generation communication relays, are undoubtedly an important manifestation of the highest level of relay product manufacturing. At present, the rapid development of the information industry has put forward higher and higher technical requirements for communication relays. The requirements for miniaturization, low power consumption, and high reliability have become the inevitable trend of the future development of communication relays.
The "2013-2018 China Communication Relay Industry In-depth Investigation and Investment Strategy Research Report" released by Zhiyan Data Research Center consists of 11 chapters. First introduced the world's communications relay market dynamics, China's communications relay industry market operating environment, etc., then analyzed the current status of China's communications relay industry operation, and then introduced China's communications relay market supply, China's power electronic components manufacturing industry main data monitoring. Subsequently, the report made an analysis of the operating conditions of key enterprises in China's communications relay industry, and finally analyzed the development prospects and investment forecasts of China's communications relay industry.
Statistics show that my country's relay industry has huge market potential. With the gradual implementation of the ten major industry revitalization policies, experts predict that during the "Twelfth Five-Year Plan" period, the demand and application fields of relays will continue to develop and grow. Traditional electromechanical relays will grow at a rate of about 8%. The development speed will remain at about 15%, and special relays will develop rapidly at a speed of more than 20%.
According to reports, the development of power grids and the application of new power grid technologies have not only promoted the development of relay protection technology, but also increased the complexity of relay protection technology, posing greater challenges to traditional relay protection application methods and management methods. The rapid growth of short-circuit current levels requires higher rapidity in relay protection; the application of DC transmission and series compensation technology requires technological breakthroughs in relay protection; compact lines, multi-circuit lines on the same pole, and urban high-voltage short lines The emergence of a large number of relays makes the configuration, setting and coordination of relay protection more complicated. The development of power grid equipment and operation control technology, such as the research of digital substations, the application of unattended substations, the construction and operation of UHV power grids, etc., will put forward higher requirements on the performance of relay protection technology, and it is necessary to study and propose new relays Protection solutions. The actual operation of the power grid and the lessons of power grid accidents at home and abroad show that a single relay protection device or a single component failure of the device may cause a power grid accident, and it is still necessary to further improve the reliability of the relay protection equipment.
The UHV power grid has significant characteristics that are different from UHV power grids. At present, there are many technical problems in relay protection, such as the impact of UHV ultra-long line capacitive current on protection characteristics, the impact of submersible current on reclosing, UHV Electromagnetic compatibility of relay protection equipment, etc. It is understood that relevant institutions in my country have carried out a series of independent research and development work, and have achieved phased results.
