China's distribution automation market has not yet formed

China's distribution automation market has not yet formed Intelligent switchgear refers to high performance, high reliability, certain self-diagnosis and automatic control performance, and network communication capabilities. In 2012, the industry achieved a total industrial output value of 204.709 billion yuan, a year-on-year increase of 15.74%.

Traditional power distribution control methods are mainly through circuit breakers, contactors, thermal relays, fuses, control relays, various main control devices, transformers, and various electrical instruments (ammeters, voltmeters, power meters, energy meters, etc.) ) Composed of switch control cabinets to achieve power distribution, control, protection, monitoring and other functions. This kind of traditional switchgear needs to be equipped with a variety of analog pointer instruments and relays; it brings great inconvenience to production, storage, and maintenance, and it mainly focuses on manual direct operation and cannot implement intelligent computer management. It is implemented for more complex control logic. It is more difficult. Intelligent switchgear refers to high performance, high reliability, certain self-diagnosis and automatic control performance, and network communication capabilities.

Intelligent switchgear can be divided into distribution type, motor control type and other control function types. The distribution type takes the intelligent circuit breaker as the core device, and the remote computer realizes the remote control, telemetry, remote signaling and remote adjustment of the distribution circuit, and the motor control type uses the inverter and the intelligent motor controller as the core device to realize the motor starting. , run, stop optimization control. Other control type intelligent switchgear is a control type switchgear with PLC (programmable controller) as the core, which completes various control functions in the production process and is also the product with the greatest potential for automatic control development in the industrial production process. The organic combination of the PLC technology and the traditional switchgear is an effective measure to realize the intelligent transformation of ordinary switchgear cabinets with less investment and quick results.

The annual growth rate of our country's switchgear is basically 7-11, which is a very large number. It has been estimated that if smart switches are used instead of traditional switches, the annual replacement rate will be 3 to 5, and the total annual demand will reach 30,000 to 50,000 units, which does not include the demand portion of the new project.

Although the actual amount of low-voltage switch is not accurate statistics, but the configuration ratio of low-voltage switch and high-voltage switch is roughly 1 to 12 to 1 to 15, in order to calculate, the annual demand for intelligent low-voltage switch should be 500,000 to 700,000 units.

In 2012, the industry realized total industrial output value of 204.709 billion yuan, an increase of 15.74% over the same period of the previous year. From 2007 to 2012, sales revenue of the high-voltage switch manufacturing industry increased year by year, of which sales revenue of 2011 was 172.009 billion yuan, an increase of 18.96%; sales revenue was realized in 2012. 2010.21 billion yuan, a year-on-year increase of 16.87%. Compared with 2011, the year-on-year growth in total industrial output value and sales revenue of the industry has declined in 2012. Between 2007 and 2012, except for 2010, other annual sales rates were less than 100%, reflecting the industry’s oversupply situation, of which 99.64% was in 2012.

In China, the power system automation is mainly concentrated in the 35KV and above systems, while the medium and low-voltage systems are not basically involved, that is, the automation of the power distribution system has not yet been fully formed. At present, China's power sector has clearly stated that the reliability index for power supply is 99.6 for the average region, and 3 hours for the average annual power outage. The average region is 99.99. The average annual power outage time is 0.6 hours.

To achieve this target, the automation of medium and low-voltage systems is indispensable, and the realization of automated intelligent power distribution systems is a foundation for it. China's mid- and low-voltage transformation has started to plan, and this market has great potential.

The rapid development of new technologies and continuous penetration in the field of high-voltage switchgear devices have resulted in the combination of strong and weak currents, and the combination of traditional technologies and high-tech, enabling the switchgear to operate intelligently based not only on the actual conditions of operation. Control, but also according to the results of online detection and fault diagnosis status overhaul.

At present, users in China have proposed the intelligentization of GIS control systems to adapt to higher voltage levels. At the same time, the nationwide network and the transformation of urban power grids, and the implementation of unattended substations, etc., will all contribute to the reliability of switchgear and artificial intelligence. Controlling put forward new requirements.

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