Siemens AG and its highvoltage switchgear equipment and technology

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1、 Siemens AG and its high-voltage switchgear equipment and technologyAbstract: Siemens is the worlds production of high-voltage switchgear, one of the leading companies, with more than 30 years producing high-voltage circuit breakers and SF6 enclosed switchgear (GIS) in history, has scored brilliant

2、achievements, marketing products around the world, the product 80 % export. Keywords: Siemens high voltage switchgear 1. Brilliant performance Siemens is the worlds production of high-voltage switchgear, one of the leading companies, with more than 30 years producing high-voltage circuit breakers an

3、d SF6 enclosed switchgear (GIS) in history, has scored brilliant achievements, marketing products around the world, 80% of products exported . In 1960 the company began to make SF6 technology, basic research work, in 1964 provide the first batch of 245KV SF6 circuit breakers; 1968 provide the first

4、set of six intervals 145kVGIS, 1974 year provided the first interval of 245VGIS, 1978 year provided the first interval of 420 / 550kV GIS, 1984 year provided 550kVGIS, for the harsh network conditions: rated current 8000A, rated short-circuit breaking current of 100KA, total 17 units circuit breaker

5、, from 1987 to 1991 to develop 7.2.5 550kV second generation of GIS, 1997, developed out of intelligent GIS, interval of integrated control, monitoring and diagnostics. Siemens AG, the worlds 750 provides more than 7,000 substations interval GIS. Dividing by product type, Siemens offers 8DN8 type 14

6、5kVGIS 4700 interval, 8DN9 type 245kVGIS 1800 interval, 8DQ1 type 550kV GIS 550 intervals, a total of more than 7,000 intervals. 8DN8 products which run the 64,000-year intervals, 8DN9 products run the 14,000-year intervals, 8DQ1 products run the 5800 interval, the interval of years, a total of 8400

7、0. In the high-voltage circuit breaker in the past 30 years, Siemens outdoor SF6 circuit breaker produced 20,000 units, 6,000 units of production GIS with circuit breaker, for a total of 26,000 units of production high voltage SF6 circuit breaker. The company produces 100 thousand dollars SF6 interr

8、upter, actuator 52000 Taiwan. In the GIS, 8DN8 a total of cylinder-type structure for the three-phase, 8DN9 type and 8DQ1 type of phase separation structure. 8DN8 type of the original do 145kV pole is done 245kV level. Siemens high-voltage switchgear belonging to Siemens Power Transmission and Distr

9、ibution Group (Power Transmission and Distribution, referred to as PTD). In the group, the production of GIS and the pipeline companies inflated the Berlin High Voltage Switchgear Factory (hereinafter referred to SWH), the production of high-voltage SF6 circuit breaker enterprises 5; Berlin High Vol

10、tage Switchgear Factory (SWH), the United States, fackson company, Brazils Sao Paulo Corporation, Chinas Hangzhou high-voltage switch companies and companies in India Aurangabad. High voltage switch factory in Berlin which is the largest production base. High Voltage Switch Factory in Berlin (Berlin

11、 Schaltwerk Hochspannung-SWH) belongs to the Ministry of Siemens AG, High Voltage Power Transmission and Distribution Group (PTD). Products include high-voltage circuit breakers and GIS (72.5kV 800kV, short-circuit breaking current of 100KA), high-voltage isolating switch, lightning arrester and so

12、on. Product performance to achieve high reliability, minimal maintenance (maintenance interval of 20 years). 80% of products exported, the delivery time of 4 to 9 months, depending on type of product may be, with annual sales of 400 million DM (German marks, 1DM about 5 yuan). 1,000 employees, inclu

13、ding 260 known scientists, engineers and technicians, 570 workers, 70% were technicians. Has a fixed capital 250 million DM, of which 140 million DM for the test equipment. Berlin High Voltage Switch Factory has the worlds largest privately held high-voltage test equipment. The amount of investment,

14、 the annual sales of 4% for new programs to replace equipment, with annual sales of 8% for research and development. Factory covers an area of 8,000 square meters. 2. High-voltage circuit breaker Siemens high-voltage SF6 circuit breaker has experienced double-pressure type - single-pressure type - t

15、ype of thermal expansion.Dual-pressure type has already eliminated. Single-pressure type SF6 circuit breaker to do 550kV100KA and 800kV63KA level. The single-voltage circuit breaker has three features: 1. Interrupter to open the way using fixed-distance. Will open with a breaking away from the curre

16、nt big advantage; 2. Nozzle and arcing graphite ring. Graphite nozzle even if the short-circuit breaking current of 20 times, its surface has not scared, because the graphite sublimation directly from the solid-state gasification; 3. Kai-off two-way movement, breaking a short time, can be achieved w

17、hen the two 60Hz cycle. As the development of SF6 circuit breaker, Siemens has developed a thermal expansion-type SF6 circuit breaker. 1996 was first exhibited at the Hannover Fair thermal expansion-type circuit products. Then optimization of the thermal expansion of interrupter to develop a second

18、generation is known as the new dynamic self-compression interrupter, so interrupter to develop a second generation of thermal expansion-type SF6 circuit breaker. In 2000, CIGRE, the Siemens company B-106 Report, describes the development of the companys second-generation smart interrupter. The secon

19、d-generation interrupter with the development of new 245kV/50KASF6 circuit breaker, each operating power only 0.7KWS. The company has also developed a two-way movement contact system so that every operation of power circuit breaker 170/40KASF6 just 250S. Siemens is also using a new dynamic self-deve

20、loped compression interrupter circuit breaker 300kV and 420kVSF6. From the pressure to the thermal expansion of gas-type, high-voltage circuit breaker Siemens set to open a distance from the variable open distance, from the hydraulic actuator into a spring actuator. And the thermal-expansion circuit

21、 breaker has developed a second generation product. Siemens will be the second-generation interrupter for the strut and the tank circuit breakers, GIS and HIS compact switchgear. Siemens AG, strut-type circuit breaker for the 3AP1 U.S. Jacksans tank-type circuit breaker for the SPS2 is now using the

22、 second generation of interrupter has developed 3AP1 DT-type 72.5 245kV circuit breaker tank. In which short-circuit breaking current up to 245kV-1.63KA. Reposted elsewhere in the paper for free download 3.GIS and compact high-voltage switchgear Siemens GIS do 550kV level (8DQ1) type. Development of

23、 GIS is mainly manifested in 145kVGIS, 80 the early developed a 145kV three-phase total of drum GIS, called 8DN81 type, the late 90s to further reduce the size and area to develop 8DN8-2-based GIS, to the 90s at the end, we developed a 8DN8-3-based GIS, known as a highly integrated high-voltage swit

24、chgear. One 8DN8-2-GIS vertical installation of the circuit breaker, while the 8DN8-3-GIS as the level of the circuit breaker to install. 8DN8-GIS interval width of only 0.8m, a significant savings in space requirements, using thermal-expansion circuit breaker equipped with spring actuator. 8DQ1 typ

25、e of 550kVGIS phase type, pressurized gas-interrupter principle, equipped with the hydraulic actuator. Figure 1 shows 8DN8-3-type structure of highly integrated GIS map, 8DN8-3-GIS is structurally different from the ABB, PASS-style compact switchgear: 8DN8-3-GIS of the circuit breaker and isolators

26、and earthing switches are not a indoor air, while the PASS structure of the circuit breaker and isolating / earthing switch in a gas indoors. 8DN8-3-GIS has just one come out, they were favored customers, sales to the German mainland, Australia and other countries, in China, has sold more than inter

27、val. 4. Medium Voltage Switchgear In the medium-pressure area, Siemens AG, known for producing vacuum interrupter, vacuum circuit breaker and vacuum circuit breaker and said the. Siemens was established in China, the vacuum switch tube (Wuxi) Company. After years of hard work, the company has comple

28、ted the series of vacuum interrupter. Alleged to be German quality, Chinese prices, local delivery. The main features of products are: small size, electrical and mechanical life long (30,000 times), rated short-circuit breaking number of over 50 100 times, intercepting the value of small (average 3A

29、), breaking capacitive current non-renewed, contact resistance small, contact burning of small, insulated, high strength, unique manufacturing processes such as contact material. Siemens tirelessly to develop a vacuum circuit breakers, developed a series of vacuum circuit breaker products, such as 3

30、AF-3AG-3AH-NXAct type and so on. Which 3AH series of sub-standard, special type (such as frequent type), the economic model. The NXAct-type multi-purpose type, set to open the circuit breaker off, isolation, grounding, interlocking in one. This can greatly simplify the structure of switch cabinets.

31、In the switch cabinet, the sub-air-insulated and SF6 insulated two kinds. In the air-insulated cabinet to 8BK20 well-known type of home cabinets. Latest development NXAir and NXAir M-type cabinets in the home. In the air cabinet, the Siemens is the worlds first to develop an inflated cabinet busines

32、s. The company was first introduced in 1982 model-GIS 8DA10/8DB10 later be replicated in other companies also have their own products. Siemens-GIS breaking the vacuum insulation with SF6. This was the excellent vacuum performance and excellent breaking performance, the perfect combination of SF6 ins

33、ulation. From the worlds perspective, inflated into a vacuum-type circuit breaker cabinet has SF6 type, in order to vacuum majority, but the insulation were used SF6 gas or N2 (nitrogen) to SF6 gas mostly. Inflatable cabinet is the high-voltage components, such as bus, circuit breakers, isolating sw

34、itches, etc. in each enclosed in a lower filling pressure of gas (usually 0.02 0.05MPa) in the shell. Are mostly filled by insulating gas SF6 gas, N2, but there are also sufficient. Inflatable cabinet with small size, not environmental impact, reliability, said the high, particularly in the 40.5kV l

35、evel, its technical and economic indicators for more superior. Inflatable Cabinet in the structure of the existing two kinds of shape on the structure of very different types: one for the aluminum cylinder closed; another way for the steel plate closed, the former much like the high-voltage SF6 gas

36、insulated electrical (GIS), the latter like a normal air-insulated switchgear. From manufacturing history, the general first, aluminum cylinder, after the steel plate. Many manufacturing companies have these two kinds of structural type, such as the Siemens 8DA10/8DB10 type is enough to cylinder, wh

37、ile the 8DC11 type of steel plate. Siemens AG will be Chinas market 8DA10/8DB10 aluminum cylinder pneumatic cabinet, in which pairs of 8DB10 type 40.5kV bus-GIS has received domestic orders. The product technical parameters: Rated voltage 40.5kV, rated power frequency withstand voltage 80kV, rated l

38、ightning impulse withstand voltage 180kV, rated current 2500A, rated short-circuit breaking current 31.5KA. Figure 2 shows the structure of Siemens AG, 40.5kV-GIS. The product is fully insulated single-phase closed aluminum cylindrical structure. As of 1999, Siemens AG, Frankfurt 22222 Switch Factor

39、y has been as the first interval, the 8DA10/8DB10 products delivered to the German power company Thuringia. To date, Siemens has the worlds 54 countries, more than 400 users with this product. Apart from the above description, the high-pressure areas should also be mentioned that the Geneva produced

40、 by Siemens for the second-generation hybrid insulation (20% SF6/80% N2) of the inflatable pipeline (GIL). In the medium-pressure connection, has also developed a series of SF6 Ring Main Unit, contactors and other products. 5. Conclusion This article is based on the third country to visit Shanghai Electric Power Equipment and Technology Exhibition and from the current issue of the preparation of such information received made to introduce the Siemens company in the area of high pressure technology innovation and products. Reposted elsewhere in the paper for free download 11