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| The market of permanent magnet circuit breaker is advancing by leaps and bounds! |
| Date of issue：2017-12-19 16:36:24 see： |
| China Power Grid predicts that by the end of the 12th Five Year Plan, China's electricity installed capacity and electricity consumption of the whole society will reach 1.463 billion kilowatt hours and 6.31 trillion kilowatt hours respectively. Accelerating the transformation of power development mode is the main task at present and in the future. In the meantime, the problem of power reliability can not be ignored. Industry standards improve reliability requirements At present, from the central to the local, it has become a consensus to ensure the highest degree of reliability while improving the construction speed of power supply and power grid. According to the introduction of relevant personages of China power grid, the formulation and implementation of power reliability standards has always been one of the core contents of China's power reliability management. In the future, the power reliability evaluation standard system will be continuously improved and the reliability standards to meet the development needs of the new situation will be formulated. In recent years, with the rapid development of China's electric power industry, the formulation of reliability evaluation code for hydropower equipment has been started and is planned to be completed by the end of next year. In addition, the code for reliability evaluation of wind power generation equipment is also planned to be upgraded to the power industry standard next year. The successive industry standards not only put forward higher requirements for the reliability of power equipment, but also brought great pressure to the technical innovation of power equipment enterprises in the production and research. The overall reshuffle of industrial pattern is imminent. Equipment innovation boosts power plant reliability As the source unit of power system, the reliability of power plant is very important. Whether it is the traditional hydropower plant and thermal power plant, or the emerging wind power plant, nuclear power plant, solar power plant, the impact of the accident is immeasurable. At present, the switches of 220kV and above voltage level in our country are operated by phase separation. Due to the faults of switch operating mechanism and its electrical control circuit, the grid connected switch is prone to open one phase or two phases in the operation of starting up grid connection and shutdown disconnection, resulting in the occurrence of non full phase operation accident of generator transformer unit. At the same time, the improper operation of the generator will also cause a great threat to the safety of the power system. In the production process of power plant, the quality of circuit breaker directly determines the reliability of the whole production system. As a kind of switch apparatus which can automatically protect against loss of voltage, under voltage, overload and short circuit in extremely high voltage environment, circuit breaker can be handled properly in time even if there are some serious emergencies. Therefore, many industry experts believe that the technical innovation of circuit breaker products may be used as a breakthrough point to improve the reliability of power plants. The reliability of permanent magnet circuit breaker attracts attention At present, China's high-voltage circuit breaker industry presents a trend of high barriers and high profits, and foreign brands occupy more than 70% of the market share; while the production field of medium and low-voltage circuit breakers is faced with problems such as small scale of enterprises, excessive number of enterprises, convergence of regional structure, serious duplication of construction, regional protection and vicious competition. Under this background, the permanent magnet vacuum circuit breaker (pmvcb) is emerging in a low-key way and becomes a model of leading the whole industry in technological innovation. The reporter learned that the production scale of domestic permanent magnet vacuum circuit breaker is steadily expanding, and enterprises mastering this technology are not eager to start fierce market competition, but tend to cooperate and exchange at the level of technology research and development. Jilin Yongda group, as the leader of the permanent magnet circuit breaker industry, has made the most appropriate interpretation for this point with their practical actions. The chairman of Yongda, LV Yongxiang, told reporters: "only if we make this cake bigger, can we share it. It's not wise to grab a duck that hasn't been found yet. " "Safety and reliability exchange meeting of power generation industry and new technology exchange meeting of permanent magnet circuit breaker" to be held in Beijing on June 28 is the best evidence. In the words of Lu Yongxiang, although the service life of the permanent magnet control mechanism independently developed by them has reached 120000 times, he will attend the meeting with the attitude of throwing a brick to attract jade. "Only if we learn from each other modestly and work together to make the technology world-class, can we create a national brand in this field!" |
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