Elasticity lifting method for distribution network considering micro-energy network support function

Abstract

The invention relates to an elasticity lifting method for the distribution network considering the micro-energy network support function. The method is characterized in that the elastic evaluation index of the distribution network with the micro-energy network is given; a power-off management scheme taking the micro-energy network as a main body at the stage of resisting and adapting faults is proposed, namely, a micro-energy network rolling scheduling model based on model predictive control is established; a fault recovery model taking the distribution network as the main body in the fault recovery stage of the distribution network is established. The method is advantaged in that the method can be applied to the distribution network with the multi-micro energy network under natural disasters such as typhoons and thunderstorms, and responds to fault characteristics of the distribution network under the large-scale long-time extreme disasters, from disaster occurrence to disaster ending, the flexibility of the distribution network in the whole process is improved, two states of micro-energy network island operation and grid-connected operation are fully utilized, the multi-energy complementary function of the micro-energy network is maximized, and a valuable technical foundation is provided for flexible operation of the distribution network under extreme disasters.

Description

technical field [0001] The invention relates to a distribution network elastic promotion method. In particular, it relates to a distribution network elastic improvement method that is suitable for urban distribution networks that are susceptible to extreme surface natural disasters such as typhoons and thunderstorms, considering the supporting role of micro-energy networks. Background technique [0002] With global climate change, events of extreme disasters causing large-scale failures of power systems have become more frequent, causing huge economic losses. Traditionally, power distribution systems are designed and operated based on reliability principles. However, high-reliability power distribution systems may also experience large-scale failures and long-term power outages in the face of extreme disasters. Therefore, the concept of resilience is introduced to evaluate the ability of the distribution network to reduce the loss caused by failure and restore the normal p...

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Problems solved by technology

[0005] The distribution network will go through three stages of resistance, adaptation and fault recovery after the occurrence of extreme disasters. Existing researches formulate operation strategies from a single stage, without considering the correlation between stages

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