Power Grid "Three Lines of Defense"

Power Grid "Three Lines of Defense" The "three lines of defense" of the grid:

The first line of defense: After a single failure of the system, no stability control measures are taken and the system must be kept stable and properly powered;

The second line of defense: After the system suffers a serious failure, it is allowed to lose part of the load. If necessary, stable control measures, such as cutting machine and load shedding, shall be taken to ensure stable operation.

The third line of defense: After the system suffers from a particularly serious failure, it leads to stability and destruction. It is necessary to take measures to prevent the system from crashing and minimize the loss of load. The system should be able to resume normal operations as soon as possible.

In the context of global warming, solar energy, as an outstanding representative of new energy, is favored by countries all over the world. Under the trend of low carbon energy saving, solar energy which is mainly based on light and heat technology has been applied to various industries and is constantly improving the energy structure. The solar energy air conditioning system takes heat supply and refrigeration into consideration, and the comprehensive office building, hostel, school, hospital, swimming pool, aquaculture, family, etc., are ideal application objects.
The seasonal adaptability of solar air conditioning is good, and the cooling capacity of the system increases with the increase of solar radiation energy, which coincides with the urgent demand of people for air conditioner in summer.
The traditional condensing refrigerator USES freon as the medium, which has great damage to the atmosphere, while the refrigerator USES the non-toxic and harmless water or lithium bromide as the medium, which is very beneficial to the environment.
The
Solar Air Conditioner system can combine summer cooling, winter heating and other seasons to provide hot water, which significantly improves the utilization and economy of the solar energy system.
Solar air conditioner system can bring into play the comprehensive advantages of cooling in summer, heating in winter and providing hot water all year round, and will achieve remarkable economic, social and environmental benefits, and have a broad prospect of popularization and application.

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