Distribution network optimal regulation method considering interaction between source and load and randomness of output power of distributed power source

Abstract

Aiming at the problems caused by the randomness and fluctuation of a large number of distributed power sources to a distribution network after the distributed power sources are connected to the distribution network, the invention provides a distribution network optimal regulation method considering the interaction between sources and loads and the randomness of the output power of the distributedpower sources, thereby optimizing the operation of the distribution network while guaranteeing the safe and reliable operation of a system. Firstly, the randomness of renewable energy output is characterized in the form of an uncertain set, and the set is reduced by an extreme scenario method, and a random model is transformed into a deterministic model. According to demand response technology, price incentives are used to realize source and load interaction with electricity. Finally, a double-layer regulation model is used to coordinate the regulation capacity of renewable energy with a traditional regulation means of the distribution network to reduce the network loss and voltage fluctuation of the distribution network, reduce the regulation times of traditional equipment, and optimize the operation of the distribution network.

Description

technical field [0001] The invention relates to the related technical field of distribution network and distributed power supply operation control, in particular to a distribution network source-load interaction optimization control technology considering the randomness of distributed power supply. Background technique [0002] With the depletion of primary fossil energy and the continuous improvement of human demand for environmental protection, more and more renewable energy is connected to the distribution network and absorbed locally to form an active distribution network. However, the output of distributed power sources such as wind power and photovoltaics has the characteristics of volatility and randomness, and based on the current technical conditions, it is difficult for the distribution network to accurately obtain the probability distribution of intermittent distributed power generation. It has brought severe challenges to the operation mode of the traditional dis...

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Problems solved by technology

[0005] Aiming at the problems caused by the randomness and volatility of the distribution network after a large number of distributed power sources are connected to the distribution network, the present invention proposes a power distribution system that considers the interaction of sources and loads and the randomness of distributed power output. Network optimization control method, in order to reduce the network loss and voltage fluctuation of the distribution network, reduce the number of adjustments of traditional equipment, so as to optimize the operation of the distribution network

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