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The concept of virtual synchronous generator (VSG) is emerging as an attractive solution for renewable energies to enhance the microgrid inertia and damping property by emulating the essential behaviors of conventional synchronous generators. However, in the isolated microgrid based on VSGs, there will be a frequency deviation when the power demand varies because of the droop characteristic of the...
With the development of UHVDC technology, the capacity of power transmission is getting increasingly bigger, which will generate a great impact on the receiving power system. This paper proposed a novel separating pole connection (SPC) mode to address this issue. Firstly, the paper introduced the configuration concept of SPC and presented the definition of short circuit ratio for separating pole connection...
Due to the inconsistent development of power grid and wind power farm, as well as insufficient power transmission capability, wind-abandon problem is becoming increasingly serious in China, and no effective solution can be found in a short time. With consideration of large scale wind farm construction in China, a method is proposed in this paper for wind farm cluster active power optimal dispatch...
Blackouts generally stem from cascading failures in power system operation. Their diminution requires very much the development of approaches and algorithms that analyze cascading failure risk and identify weak links of power system. Different from optimal load shedding model widely used in conventional risk assessment, this paper considers the impact of cascading failures on power system, and adopts...
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