Transformers mainly include: voltage conversion, current conversion, impedance transformation, isolation, voltage regulation and so on. The transformer industry has grown with the construction of electricity. Electricity construction is a very important infrastructure construction in China. Especially in the past few years, as the country increased investment in power construction, the transformer market was activated, and the capacity of China's transformer companies was rapidly expanded. In recent years, with the rapid development of the transformer industry, industrial drawbacks have gradually emerged.
At present, China's transformer market demand is less than 1.5 billion kVA, while the current transformer industry capacity in China has reached 3 billion kVA, and overcapacity has directly affected the company's efficiency. Due to vicious competition, quality products have entered the market. At present, most of the products on the transformer market are of low quality, and more than half of the products are unqualified. As an important equipment for protecting the power grid, the quality of the transformer directly affects the safety of the power grid in China.
According to Shangpu Consulting's electronics industry analysts, China's transformer companies have been operating in a low-efficiency environment for a long time. The burden of enterprises is heavy and there is no support from state funds. Therefore, the focus of research and development can only be on solving short-term technical problems, and the inability to engage in the long-term development of enterprises and the research and development of key technologies. For a long time, the development of most state-owned enterprises relied on the introduction of technology, and often did not pay enough attention to independent innovation. Enterprises should neither re-involve and lightly develop and innovate independently, nor should they blindly conduct research on closed doors. They should emphasize open-ended independent innovation and encourage digestion and absorption of imported technologies.
According to the 2011 China Transformer Market Analysis and Investment Value Research Report released by Shangpu Consulting, domestic transformer companies need to change the price advantage they used to rely on. In the case of the country's strong support for wind power and smart grid construction, it is necessary to strengthen R&D efforts. To produce higher quality products and better quality products. At the same time, we will implement market demand-oriented and rationally adjust the structure to avoid the impact on the enterprise due to overcapacity.
High Voltage Switchgear
The power system deals with voltage above 36KV, is referred as high voltage switchgear. As the voltage level is high the arcing produced during switching operation is also very high. So, special care is to be taken during designing of high voltage switchgear. High voltage circuit breaker, is the main component of HV Switchgear, hence high voltage circuit breaker (CB) should have special features for safe and reliable operation. Faulty tripping and switching operation of high voltage circuit are very rare. Most of the time these circuit breakers remain, at ON condition, and may be operated after a long period of time. So CBs must be reliable enough to ensure safe operation, as when required. High voltage circuit breaker technology has changed radically in the last 15 years. Minimum oil circuit breaker (MOCB), air blast circuit breaker and SF6 circuit breaker are mostly used for high voltage switchgear.
High voltage switchgears are categorized as,
1.Gas insulated indoor type (GIS),
2.Air insulated outdoor type.
Again, outdoor type air insulated circuit breakers are classified as, 1.Dead tank type circuit breaker
2.Live tank type circuit breaker
HV Switchgear
HV Switchgear,Small HV switchgear,Metal HV Switchgear
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