Abstract

With the permeability of the renewable energy generations (REGs) becoming greater, the distribution network (DN) has become a complex interconnected network with distributed generations (DGs) and loads from a traditional radiate one. REGs bring the great opportunity to low-carbon and sustainable development of the distribution system (DS), but it also brings severe impacts to the security and stability of the operation. In this chapter, six key impacts regarding secure operation are analyzed including power transmission, power quality, frequency stability, islanding effects, protection, and power-system planning. Based on the analyses, corresponding suggestions are introduced. Particularly, the promotion of REGs’ stability and controllability, as well as the coordinated planning method for DN considering the integration of REGs, are discussed in detail.

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