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Experts noted that the next two to three years, some high voltage switching equipment market will continue to expand capacity, and has good market prospects. In recent years, China's power industry maintained a rapid growth momentum, generating an annual capacity of 8% growth. Since the 1998 launch of its urban and rural power grid reconstruction project, and the subsequent successive implementation of the western development and electricity projects, to transmission and distribution equipment industry has created a tremendous market demand, the size of the market rapidly expanded.Statistics show that China's future will be an additional capacity of 23 million kilowatts by 3000 the building of power, the increasing capacity of up to 2,500 megawatts, which can increase the capacity by 30% to 40%, and installed a new direct some switching equipment market will have greater capacity expansion, and has good good market demand. 330 ~ 550 kV voltage switch electrical demand will continue to rise. With "15" during the annual capacity than the "Ninth Five-Year" period in the Northwest Territories 330 kv voltage main power grids and further improve the frame building, 330 ~ 550 kV voltage levels required for switching equipment, "15" will be increased, is expected to "15" in the late demand for about 180 ~ 200 devices (including GIS). From a Variety of view, despite a small tank breaker, good seismic performance characteristics, but because of porcelain and a separate column SF6 circuit breaker price below the current transformer tank breaker, breaker ceramic column proportion will increase. Its share of a GIS about 35%, porcelain Column (P-GCB) accounted for 35%, Tank (T-GCB) accounted for 30%. 126 ~ 252 kV voltage circuit breaker in demand for nearly 7,500 Taiwan. The next few years, because of urban and rural power grids will continue, and City Network voltage 35 kV high-voltage grading restrictions on the use less oil and SF6 circuit breaker breaker by factors such as turnover, 126 ~ 252-kilovolt products will maintain high growth rate is expected to "15" late, 126 to 252 kilovolts off the demand of the road will reach about 6,000 to 7,500 units. From product structure, the voltage level of non-oil products will remain, but the Midwest by the economic capacity constraints, less a small amount of oil products are used. Is "15" late, 252 kv voltage SF6 production of up to 100%, with SF6 circuit breaker in the proportion of GIS products can be further increased to 30%, since the ceramic column can interrupter-products accounted for 50% of product gas pressure 20%. From the future market demand, the short-circuit current, short time-off occasions, the gas pressure of SF6 circuit breakers should be elected thermal products. GIS packages are strong, easy to install building-harsh environment, high reliability, maintenance of the advantages of small, hot and humid, high altitude, cold and harsh environmental conditions - hypertension, EHV substation, GIS equipment will be the preferred products. In recent years some Chinese factories produce 126 to 252 kV voltage level GIS substantial increase in the quality of equipment, reliability consistent with the foreign, therefore, the use of GIS equipment will increase further. "15" late, 126 ~ 252 kV voltage level, the demand for GIS equipment can be achieved between 1500 to 1600. As domestic enterprises to expand production of 550 kV voltage level, GIS equipment there is still much resistance, it is the key to further open up the market for the products is to enhance the credibility of users. Based on the circuit breaker to open or semi closed combination of increased use of electrical appliances. Currently, production at home and abroad has begun to SF6 circuit breaker - based semi-enclosed or open-outdoor combination of electrical appliances, electrical appliances such combinations bit larger than the size of GIS equipment, but smaller than the regular-open, and prices below the GIS equipment, but higher than the regular Open, which is expected to electrical combination "15" the period is expected to expand the use. The metal closed pressure switch equipment will have greater growth. 。 Pressure closed in the metal grid switching equipment is the basic equipment, and equipment is the basis of the national economy. With the accelerated development of the power industry and the rapid development of the national economy, medium voltage switchgear will have greater growth is expected "15" to reach the end of 210,000, if the load circuit breakers and switchgear cabinet, contactor counters to measure the ratio is about 2:1, the circuit breaker for the 140,000-counter negative He switches and contactors for the 70,000-counters. Pressure in the main switching devices to 25 million units. Currently many types of switch products, but the main protection and control functions combined with high voltage switchboard situation, the main component that circuit breakers, switches and load contactor. Currently abroad load switch and contactor in the use of power grids pressure was significantly higher than the number of circuit breakers, and China is the opposite. Because China policy of gradually adjusting equipment, load switch and contacts with the growing use ratio will rise 12 KV main switch components and load switching, "15" end of the market demand to 25 million units. About 167,000 of these devices Taiwan, load switch with contact with about 83,000 units. 40.5 KV main switch devices are the main circuit breaker is still dominant, the next few years, market demand remains the main circuit breaker, but will also start load switch, 40.5 kv main switch components total of about 16,500 units, of which 16,000 units breaker, the load switch 500. Prefabricated substation prospects for a wider use. Network terminal substation in the low-voltage power grid is the meeting point in recent years China has gradually introduced and developed by the metal encapsulation, in the factory pre-manufacturing and assembly debugging good substation. Prefabricated substation as a set of strong, easy to install building to reduce footprint and do not need the advantages of building the terminal substation is widely used prospects, some countries already installed substation terminal substation over 80%. According to relevant data calculations, China's current 10-kilovolt substations, distribution terminal for the construction of 80,000 to 100,000, if 60% of the future by using preinstalled substation, it takes 50,000 years to 60,000 Installed substation. Currently, the required amount has been 15,000 and is expected to "15" end of the 12-kilovolt substations installed capacity will be 25,000 to 30,000. Installed substation small, high reliability, suitable for all kinds of environment that would meet the needs of various users personalized products will be more popular. |