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There are many forms of network structures in the process of smart substation layer. It is significant to research the process layer's reliability under different network structures of relay protection system for the network structure selection of process layer and engineering application. Based on the digitized substation relay protection system structure characteristic, this paper puts forward a...
Spinning reserve (SR) capacity setting is an effective measure to ensure the reliability of power system operation. Traditional models for SR optimization are mainly concerned with the economic and security factors. In this paper, the concept of a low-carbon economy is introduced into the power system SR optimization while considering the emergence of low-carbon factors and their impact on the SR...
A wide area protection agent with high degree of fault tolerance is designed in this paper by using fault direction information and distance action information. The working principle of the proposed agent is to first locate the fault by making a comparison between different fault direction information, and then conduct fault-tolerance processing by utilizing fault confirmation ring and distance action...
Early in 2008, some areas in southern China (especially Guizhou, Guangxi, Yunnan and Guangzhou Provinces) experienced extreme low temperature, heavy rain, snow, and freezing weather, which seriously damaged the power system. Based on the general disaster situation, this paper describes characteristics of local power grids in each province and the processes through which they broke down. Some detailed...
In order to incarnate area wide protection in engineering application and improve the capability of relay protection, the paper refers to regional intelligent protection system. In compared with wide area protection, regional intelligent protection system pays attention to improving the capability of relay protection by using regional power network information. In regional intelligent protection system,...
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