Talking about the design of electrical equipment for super high-rise buildings
Shandong Tongyuan Design Set Co., Ltd. Maoqin Motor Room, Electrical Shaft, Weak Electric Equipment Room> Design Points and Precautions Guan Yuci Super High-rise Building Substation Diesel Generator Room Electrical Wells Earthquake AbstractThisarticledescribesGeneral High SK Building, Root倨Building scale and use functions, loyal to H various electrical systems and electronic suffocation systems, to choose a suitable location in the building, set a certain size of strong electric power and weak motor room and other electrical equipment special claw room. In the engineering design, the electrical profession must promptly give the construction professional according to the family's norms and relevant regulations, and meet the requirements of the construction and construction work. Heqi chooses and determines the various strong and weak electricity houses. The position of H is anti-scale, and it is hoped that the electric H program and the construction plan can achieve satisfactory results. From the similar features of high-rise buildings in the electrical design of S high-rise buildings, there are also the concept of high-rise buildings with ordinary high-M construction. It is necessary to do special design at key points to ensure its safety and quality. Combining my experience in designing in the past, I will talk about the design of a high-rise building in the design of electrical equipment for a high-fif and super-high-rise building. 1.1 The high-rise building has a complex function and a large number of electrical equipment. The claw capacitance is large, and the building is hoarded large, the power supply distance is K, and the line electric IE is increased. Considering a plurality of substations. In the super high-rise buildings below 20m, the more common method is radial power supply, and the 10kV incoming line is introduced from the underground M to the 10kV total transformer station, and then the Btl to the load distribution station of each load center. In the front of each transformer of the substation, U) kV isolating switch 枳, the advantage is that its ground protection is complete and simple, the disadvantage is that the switch is more, the cable is more, the electrical equipment room occupies the basement area. 1.2 Setting the location of the substation The selection of the substation at 10kV and below is designed to be close to the center of the load. The ultra-high M building is generally located in the bustling area of ​​the ten cities. In order to avoid the golden position of the seven-clawed faint layer, the large capacity The electricity is used to set up the air-conditioned room, the water S room, etc., so the total substation is generally set to the ground; the structural beam of the tower of the super-high S building is relatively large, Park: N is relatively dense, not g meet the requirements of power distribution equipment layout, the substation is more choose to be placed in the podium position, the capacity S equipment is provided for the refrigeration room, etc. /11 special claw substation, the skirt room is larger, m electricity The equipment is many and scattered. At the time of design 4, each electrical well is used as a load set point. The position of the substation should be selected to the position with the smallest horizontal distance of each distribution shaft. In the vicinity, the load SR is minimal; the substation can be installed in the basement of the building, but it should not be placed at the bottom. Therefore, the total transformer substation of the high-rise building is usually located on the second floor or below the ground. The location of the building. Secondly, the setting of the substation is still inferior! Hey! The line is convenient, it should be close to the external wall, and the party should investigate and enter the line; it should also investigate the transportation or hoisting of the Jiji. In the program stage, it should cooperate with the construction profession, and consider the entry and exit of the Jiji. In addition to the requirements for collection, the rationality of the outdoor pipelines in the community and the impact on the design of the buildings should also be considered. A high ffi boundary chamber of not less than 20 m2 can be installed in the underground M. According to the total capacity of the claws and the load distribution, a 10kvIE power distribution room and one or more 10/0.4kV substations can be reasonably set. . The 10kV high W power distribution room should be close to the Gaochun boundary room and should be built in conjunction with the main transformer substation. In addition, other setting requirements are: should not be located directly in the office, bathroom or other places where water is often accumulated, ri should not be placed in the vicinity of the place; should not be located in places with severe Yuan or high temperature; should be avoided The position of the expansion joint and settlement joint of the TTv building of Jianchang Energy Construction TT should not be located in the upper part of the explosion hazardous environment or the positive force should not be placed in the fire or dangerous environment, such as the positive force or the positive force, etc. 4 See the relevant specifications, not to mention one by one. 1.3 The height of the upper substation is ten high. The height of the M building is high. It is difficult to connect the water pump to the top of the building with 10 underground M pumps. It is necessary to add a fire water system and a living water system in the equipment layer of the building N. 〗 10: Set the bar to run the iK of the security system. In addition, in the refuge floor and the tail top layer of the upper part of the building, elevators, fans and other electric equipment are also installed. It can be considered that h is a load concentration point. When the power supply from the lower substation is uneconomical, it should be considered. Set up a substation at the top. There is information that the load of high-rise buildings is unwilling. Large 1030,000 kW m, otherwise non-ferrous metal consumption, investment and line losses increase. Considering the reality, the full RK construction engineering technical measures / electricity H regulations, the load exceeds 500kW, the power supply distance exceeds 2 (X) m should consider setting up the substation, the negative moment at this time reaches 10,000 kWm; in the high-rise building The Fengchang Electric Power Station is mostly located in the podium building, and there is still a certain degree of water f distance for the Hi line. In the actual design, the super high-speed building above 150m should consider setting the upper substation; When considering whether to set up the upper substation, it should not be considered simply to separate the capacity or the power supply distance. The load moment of 100,000 kV should be considered as the upper limit value of various prisoner's edges. h part of the power distribution station is generally set in the function conversion place or technology folder M, refuge M, which is also the use of electrical equipment in the nest in the ground A. When the upper substation is set, in addition to meeting the requirements of the specification, should also consider Change the IE device t-lifting and post-mouth equipment maintenance history to change the water and the transport channel, and the impact of the Jiji on the floor load. Due to the size and load of the Ding Elevator shaft, the method of hoisting outside the wall should be avoided. A single variable instrument rat should not be used for 8 (X) kVA, or a complete substation miniaturization equipment can be used to save space. The power supply inlet and outlet line adopts h in and out, and it is not recommended to make the cable clamp M. In addition, the upper substation should try to avoid the neighboring room N for the office, hotel, etc., otherwise it should consider taking anti-vibration, noise, Measures such as electromagnetic radiation. 1.4 Substation area estimation Based on past experience, with high voltage distribution room. In the substation, when the equipment is changed to two instruments, the construction area of ​​the substation should be about 300m2; For the 400m2. Other sub-substation leaves are only set up in front of the variable ffi, and the hoarding of the substation can be estimated at 7590m2/ft. The determination of the area of ​​the substation should also take into account the physical dimensions of the selected equipment, and whether or not the first position is set in the substation. Cable trenches, the location of cables entering and leaving the power distribution cabinet, etc. will affect the equipment scale, and if necessary, economic and technical comparisons should be made, Heqiu. Choose to set up. Need to pay attention to the foot, the shape of the building area and the column N setting is not conducive to the equipment layout, the area will be added. 2 Diesel generator room 2.1 Diesel generator room is set as a super-layer building. The safety parts must be the place that the power supply system design needs to pay special attention to. In the design of the distribution system, consider the configuration of the multi-loop power supply and the standby generator set. When using a low-voltage generator, it should be close to the low-voltage power distribution room of the substation for wiring and reduce line loss. When the building m has a large capacity, the claw m generator can be considered. The building is in need of the computer room and the type, throughput and cloth head of the unit. Related factors. In the design stage, the unit room area of ​​the unit is about 60100m2. 2.2 The position of the diesel generator room must meet the requirements for the location selection of the substation, and the air intake, exhaust and exhaust of the equipment room should also be considered. I don't have to rely on the outer wall, it is best to be on the non-main entrance and leeward side of the building. Try to avoid the middle entrances and exits of the building and the main ramps, so as to prevent the machine from being inspected and inspected when the machine is regularly operated and maintained. The equipment room should not be located at the lowest floor of the basement. Otherwise, effective anti-mite and moisture-proof measures should be taken to ensure that the emergency generator set, power distribution cabinet and fire-fighting equipment during the fire-fighting period are not caused by water flooding. 3Electrical shaft (floor distribution room) 3.1 The area of ​​the electric shaft is used as a super high-rise building. There are many floors M. The more electromechanical equipment is matched, the more the area of ​​the equipment is occupied, and the lower the floor usage. According to the information, some foreign high-rise intelligent buildings are used at around 60%. The smart office buildings built and under construction in China have a claw rate of around 65%, and the highest is about 70%. For the ten owners, it is hoped that there will be as much space as possible for use, which will create a contradiction with the space occupied by our electrical equipment. This is also a problem that many high-rise buildings will encounter. According to experience, the area between the strong electrical equipment is 5%.~10% of the floor area. The upper level is generally 10%n. It is also necessary to borrow the H1 walkway space. The space is relatively tight. The weak electric phase In. 3.2 pay attention to the space saving. Design h, first of all to meet the requirements of the specification, to ensure that the electrical system has a good installation and maintenance of the empty NN when the Hh industry has obtained the history of the Claw N, the designer needs to arrange the cable and Xianli force 4丨 reasonable layout Fine design, adopting new technology and new technology, adopting advanced design on the economical and rational benzene basis, and closely coordinating with the owner and each construction site, the M mouse reduces the conversion vertical and shrinks the vertical and so on. Space to provide more space for use in 丨k. 3.3 The position and number of shafts shall be determined according to the nature of the electrical load, the number of equipment and pipelines, the number of cables supplied by each branch, the settlement of the building and the fire compartment. Generally, 800m2 is left to set up an electric Xianjing. The electric H shaft should not share the same shaft with elevators, pipeline wells, etc., to avoid the adjacent flue, heat pipes and equipment that dissipate heat or humidity, close to the power load center. Reduce the length of the trunk cable and power loss. For high-rise buildings, podiums and towers, the use of various functions, for the management of the ten, electrical Xianjing should be set according to the use of functions, in addition to r set up on the tower, also in the group building power distribution N, diversion A pipeline that is not related to the tower. The installation of electric Xianjing in the high M building should consider the input and exit force, and should be located in the public part of the installation and maintenance, and the upper KS should be aligned. In addition to the size of the cable, the closed busbar, the threaded steel pipe and the trunking, the space occupied by the distribution box, the meter box, the distribution box and the junction box, and the operation and maintenance distance should be considered. In addition to the necessary spacing of the wiring interval and the installation of the cabinet or equipment, the strong electric power should be no less than ten in front of the cabinet. 8m, weak electricity. In front of the cabinet, there is a small operation and maintenance distance of ten 0.6m. When restricted by conditions, the public walkway outside the Kenzi Xianjing is used as the maintenance area. The net depth of the strong electric well should not be 0.8m, and the net depth of the weak electric well should not be small. 4m. When selecting the vertical position, the influence of the structural beam on the vertical line laying should also be considered. It should be noted that when the thickness of the h wall is reduced, the inner wall is aligned and the ten lines are laid. In order to prevent water inflow, the floor or threshold of Yinjing should be high. Mi is in the super M building with substation in the upper part. The electric Xianjing should also be placed in the empty N, In when the ffilOkV and low + : When the 0.22/0.38kV power supply line is used, the spacing should be as large as 500mm, and the high-light cable line should be laid in the gold-line trunking, and the vertical and high-voltage power lines should be clearly marked. Figures I and 2 show the layout of the electrical shaft of your quasi-story with a tower for office. 3.6.1 All kinds of vertical tube wells in high-rise buildings are the way of fire extension. In order to prevent the tube from being fired during the IK fire and to expand the disaster, the parallel wall of the electrical vertical shall be a non-combustion body with a fire limit of not less than 1H. The electrical Xianjing access door on the floor (the fire resistance rating should not be lower than the inner level) should be directed to the public passage. The floor transport N should have reinforced concrete slabs or steel slabs for fireproof and sealed isolation. In each layer of cable passing through the floor (pre-retained hole or gold-line pipe casing) for fireproof sealing, there shall be no holes. Detectors should be provided in rooms with a height of 5 m2 in the super high-rise. Monitoring the electric bridge (three slots) wired integrated cloth IR cabinet two plug-in bus plug-in box fire-fighting information introduction, at the height of lm, the swing deviation can reach 20em. In order to reduce the high-rise buildings when swinging For the copper busway connection assembly, the design of the vertical cow trunk line can be connected to the busway power distribution by cable, reducing the chance of failure and maintenance, and relatively increasing the A life of the dry system. 3.6.3 In order to ensure the safety of people, super high-rise buildings also need to be safely grounded, that is, equipotential bonding system, with grounding P line and grounding terminal box in the shaft. The metal casing of each floor of the steel and electrical equipment can be reliably grounded by means of electrical wiring to form an equipotential M. For details, see the cabinet 3. 3.6.2 due to the high degree of swing of the high-rise building, according to Smart house electrical technology 4 weak electrical equipment room in the super-layer building, the degree of letter is more ambiguous, need to set up various types of weak motor room, such as fire-spinning slaughter, security control center, construction equipment monitoring room, Shu said: Chinese people Ministry of Housing and Urban-Rural Development of the Republic. G16 2008 Electrical Design Code for Civil Buildings. Beijing: China Building Industry Press, 2008. China Building Standard Huai Research Institute. Technical measures for the design of all civil engineering projects - electrical. Beijing: China Building Industry Press, 2003. Ministry of Power Industry of the People's Republic of China. GB50260-96 seismic design specification for power facilities. Beijing: China Planning Press, 1996. Ministry of Housing and Urban-Rural Development of the People's Republic of China. GB50011-2008 seismic design code for buildings. Beijing: China Building Industry Press, 2008. Wu Zhengping. Introduction to the distribution system of super high-rise buildings. Building Electric, 2008 (5). Dye Fabric,African Batik Fabric,African Brocade Fabric,Dye Colored Fabric changxing weituo import and export co.,ltd , https://www.cxweituo.com