Factors affecting lighting design At present, the shortage of lighting for large and medium-sized hydropower stations in China is obvious. The main reasons for the analysis are as follows: In the design of hydropower projects, lighting work is a secondary branch, and its design work is not enough. The importance of the staff and the workers are often insufficiently invested, and it is difficult to conduct complex research projects. For large and medium-sized hydropower projects, a perfect lighting design is undoubtedly a technical, heavy workload and very cumbersome work. From the statistics of lighting capacity, the determination of lighting schemes, the design of construction drawings, and the procurement and installation of materials and equipment, it will be difficult to achieve satisfactory results without careful and meticulous scrutiny. The way of lighting in some important places in hydropower stations has yet to be further explored (this is done in terms of architectural solutions, lighting solutions and innovations in lighting types).
The general lighting mode and illuminance requirements of the main control room, the central control room lighting control room, the main plant, the lamp configuration, etc., have been described in detail in the relevant manuals and procedures, and will not be described here. The following focuses on some of the experience and the use of light sources and the development of lighting design. For the convenience of demonstration, the main technical parameters of several common light sources are extracted for reference. In the lighting design of the generator floor of the main building of Xiaolangdi Project, the more mature lighting mode is adopted, that is, the hybrid lighting mode combining the main light source on the ceiling and the auxiliary light source on the side wall. The main light source uses 144 sets of 400W metal halide light source, and the square vertex is arranged. The average illumination converted to the working surface is about 400Lx.
In the central control room lighting design of Xiaolangdi Project, in order to avoid the above deficiencies, simplify the ceiling structure, and according to the central control room is divided into two parts of the ground and underground and the area is small, it is determined to use high-quality grid fluorescent lamps, evenly arranged in On the ceiling, the embedded installation method, the ground part has natural lighting, so the design average illuminance reaches 300Lx, the average illumination of the underground part reaches 500Lx. Because the AC-DC inverter system is used to provide emergency power for emergency lighting, emergency lighting and working lighting The luminaires can be shared and the average illuminance under emergency conditions can reach 20% of the average illuminance of normal working lighting.
Such a lamp and wiring method greatly simplifies the structure of the ceiling, so that the light color of the central control room is kept uniform, and can be consistent in both the normal working state and the emergency state, thereby effectively reducing the number of light sources and compacting the lamp form. Reasonable, and can make full use of the luminous efficiency of each set of lamps, easy to maintain. This elegant and compact, practical and practical form of cloth is a good design. At the same time, we must also see that if we want to further improve the lighting effect of the central control room, and make an investment once and for all, we should first further innovate the structural form of the central control room ceiling in the architectural design to ensure the illumination uniformity, brightness, glare and other indicators. Under the premise of complying with the regulations, try to install some diffused-type lamps with high power, long life and high color rendering index, in order to effectively reduce the number of light sources, improve the efficiency of the lamps, extend the maintenance cycle, and ensure the long-term illumination of the central control room.
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