Distributed optimization method of distribution network under bilateral power market environment

Abstract

The invention discloses a distribution network distributed optimization method in a bilateral electric power market environment. The method includes: (1) constructing a distribution network system in a bilateral market environment, including a distribution network system operator DSO and an electricity purchase user and electricity selling users, each user is equipped with controllable units and uncontrollable units; (2) build market user optimization models and DSO security check models respectively; (3) optimize and solve market clearing, and solve market users in the expected trading power correction stage In the market user optimization model, users use the ADMM algorithm to iteratively update the expected transaction power, and the DSO calls the security check model to check the iterative results; in the expected transaction price correction stage, the transaction price is corrected by modifying the bidding coefficient. The invention uses distributed optimization to solve distribution network optimization problems under market conditions, taking into account the interests of different subjects and system security, and only needs to exchange a small amount of information between market users to realize resource allocation, simplifying the difficulty of network communication.

Description

technical field [0001] The invention relates to a distributed optimization method of a distribution network under a bilateral power market environment, and belongs to the field of energy management of a distribution network. Background technique [0002] With the massive access of distributed power sources and the rapid development of smart grid technology, energy supply and use members represented by microgrids, load aggregators and electricity retailers can effectively control distributed power sources through energy management because of their independent decision-making capabilities. and flexible loads, which have changed the structure and operation mode of the traditional power grid. A distribution network system often contains multiple stakeholders, which can not only interact with the distribution network, but also conduct electricity transactions with each other. The distribution network optimization under market conditions becomes more complicated, while the traditi...

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Problems solved by technology

A distribution network system often contains multiple stakeholders, which can not only interact with the distribution network, but also conduct electricity transactions with each other. The distribution network optimization under market conditions becomes more complicated, while the traditional The centralized optimization method has problems such as a large amount of information collection, low modeling accuracy, and high difficulty in solving

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