Power distribution network distributed optimization method in a bilateral power market environment

Abstract

The invention discloses a power distribution network distributed optimization method in a bilateral electric power market environment, and the method comprises the steps: (1) building a power distribution network system in the bilateral electric power market environment, which comprises a power distribution network system operator DSO, a power purchase user, and a power selling user, and each useris provided with a controllable unit and an uncontrollable unit; (2) respectively constructing a market user optimization model and a DSO security check model; (3) optimizing and solving the market clearing, solving a market user optimization model by a market user at an expected transaction power correction stage, iteratively updating expected transaction power among the users by adopting an ADMM algorithm, and calling a security check model by a DSO to check an iteration result; And correcting the transaction electricity price by modifying the bidding coefficient in the expected transactionelectricity price correction stage. The power distribution network optimization problem under the market condition is solved through distributed optimization, benefits of different subjects and system safety are considered, resource configuration can be achieved only by exchanging a small amount of information between market users, and the network communication difficulty is lowered.

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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