Abstract
AbstractThe power system flexibility refers to the adaptability of the system to internal and external uncertain factors, that is, the response capability of the system when internal or external variables change. Flexible resources come from all regulation means that can deal with the system volatility and uncertainty. Flexible resources in power systems can be defined as a set of resources in which the “power source-network-load” link can provide a certain regulation capability to adapt to the random changes of power systems (such as renewable energy output uncertainty, load fluctuation, and DC lock caused by grid failure) under a given time scale. The role of flexible resources is to act as a “flexible power regulation” to provide sufficient margin to meet the flexibility requirements of the system. This chapter divides flexible resources according to the three dimensions of “power source-network-load”, and introduces the technical and economic characteristics of flexible resources in the multiple links of “power source-network-load”.
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