Shanghai's first green smart substation put into operation looks beautiful and intelligent

“It was originally a substation. How did it become a commercial building?” The “business building” where people talked about one after another was the 220 kV Yuding substation built in 1983. After 14 months of intelligent transformation and optimized design, it has become the first green intelligent substation in Shanghai. Recently I went to check it out.

Luding Station is located in the heart of Shanghai Putuo Business Park, near Luding West Road, Luding Road. In order to coordinate with the surrounding environment, Shanghai Electric Power Company invited experts to design it carefully. At the scene, the reporter saw that he was standing in the building facade design, using exterior wall paint, aluminum alloy louvers, and PVC lines as the main decoration materials. The equipment rooms with the same function in each group are designed as a composition sequence, and solid walls and shutters are interspersed and arranged to form a virtual reality change of the facade. Because the volume is larger than ordinary civil buildings, the height of the floor is higher, so using the lines on the facade will separate the walls of the wall, and the overall shape will not be bulky.

In order to prevent transformer oil leakage in substations, substations have set up a permanent accident oil pool. Deputy Director of the Infrastructure Department of the Shanghai Electric Power Company, Li Binkai, introduced that in the event of an accident in the main transformer, the transformer oil would enter the accident oil pool from the pebble layer and be completely isolated from other rooms inside and outside the substation, and be completely separated from the sewer. At the same time, in order to reduce the noise, the sound-absorbing material is placed on the wall of the transformer, and the air intake window of the transformer room is changed to a crescent-shaped noise reduction ventilation window, which reduces the reverberation noise of the main transformer room and minimizes the noise.

The information in Luding Station is all digitized, information is transmitted to achieve networking, communication models are standardized, and a variety of equipment and functions share a unified information platform, which breaks through the traditional sense of equipment maintenance and operation to the mode of manual monitoring and operation. Computer "one-click" flow operation is realized. It is planned to establish sensory monitoring and control networks in the main electrical equipment, and to realize the protection and monitoring integration through online real-time monitoring and intelligent analysis systems. The reporter saw in the main control room that the six computers clearly showed the status of the main transformer in the substation, wiring status, and protection status, even if the internal state of each small switch of the transformer could be clearly displayed. Dr. Shen Bing of Shanghai Electric Power Research Institute told the reporter that, like monitoring transformer oil, various oil content changes can be monitored in real time. In the past, monitoring personnel regularly took samples from the oil and sent them to the laboratory for analysis. With the use of smart substation technology, while improving the efficiency of substation dispatching operation management, the use of non-ferrous metals has also been greatly reduced. The number of cables used in the station has dropped by more than 60%, and the effect of material saving has been significant.

It is reported that there are nearly one hundred 220-kilovolt substations in Shanghai, of which the newly-built transformer substations with a voltage level of 220 kilovolts and below are located within the outer ring, and all of them have achieved indoorization, and the land-saving effect is obviously better than that of conventional outdoor substations. Internal substations vary by 30% to 50% depending on the scale of construction. In the future, the newly-built 220 kV and below voltage substation design in Shanghai will have a clear “Energy Conservation and Environmental Protection” benchmark: the size, size, layout, style and color of the substation must be harmonized with the surrounding environment, landscape, and appearance of the city.