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Analysis on the Development Prospect of China 's Relay Industry in 2014

2014-05-27 00:00

In recent years, China's power grid has been rapid development, application of new technologies for power grid to promote the development of relay protection technology in our country, but also makes the relay protection technology complexity increase, to challenge the traditional relay protection application mode, management mode.

The relay is widely used. In the power system, when the fault occurs in power system itself, endanger the safe operation of the power system, relay protection device can timely send warning signals, or directly controlled by the circuit breaker to issue a trip command to terminate the development of fault, minimizing damage to the power system component itself, can also meet a certain the requirement of electric power system. Therefore, the relay protection is called the first line of defense for the safe operation of the power grid.

However, it is difficult to balance the security and rapidity of power protection, which is a worldwide problem. In the United States, the two large area blackouts were triggered by the relay. In our country, more than half of the power outages were caused by the defects of relay protection in 90s.

The development of relay protection technology is closely related to the development of electronic, information and communication technology,with the gradual application of electronic CT (current transformer) and PT (voltage transformer), the further improvement of the IEC61850 standard protocol, it can be predicted that digital technology will be more widely used.There are 110 thousand volts and 220 thousand volts voltage level of electronic CT, electronic PT put into trial operation, relay protection equipment research and development for electronic CT and PT, will promote the development of the technology of relay protection, relay protection to new principle, new technology and new application of change, become the new task for the relay protection scientific research personnel.

According to the( 2014-2018 China relay industry production and demand and investment forecast analysis report) forward-looking data show: China's relay industry has a huge market. potential.

In 2008 the national industrial relay market capacity is about 10.9 billion yuan, in 2009 the industrial relay market capacity reached 11.6 billion yuan, the relay exports amounted to $about 38000000, in 2010, China's Relay Sales of approximately $1 billion 600 million. With the gradual implementation of the policy, the revitalization of the ten big industry experts predict that the "12th Five-Year" period, requirement and application fields of the relay will continue to grow, the traditional electromechanical relays will increase at a rate of about 8%, the pace of development of the solid state relay will remain at around 15%, the special relay will be at the speed of more than 20% rapid development .