Upper and lower double-layer optimization theory based distributed generation coordination optimization scheduling method

Abstract

The invention relates to distributed generation and distribution network optimization scheduling, in particular to an upper and lower double-layer optimization theory based distributed generation coordination optimization scheduling method. The method includes: S1: determining a distribution network layer optimization objective function; S2: determining constraint conditions that the distributionnetwork layer optimization scheduling should satisfy; S3: constructing a microgrid layer; S4: determining a microgrid layer optimization objective function; S5: determining constraint conditions thatthe microgrid layer optimization scheduling should satisfy; and S6: performing distribution network layer and microgrid layer coordinated optimization scheduling. The distribution network and the microgrid coordinate with each other, and the upper and lower layers interact with each other, and finally the economic scheduling of the distributed power source can be achieved. Due to the introductionof the distributed power sources, the stability and reliability of the distribution network are improved significantly. Moreover, because the upper layer management of the microgrid is performed at the distribution network level, the clean energy of the microgrid is fully utilized, the abandoned wind and light are reduced; the capacity allocation of a energy storage unit is reduced because the microgrids are connected to each other through the distribution network. Furthermore, suggestions and basis are provided for optimal scheduling of the distribution network.

Description

technical field [0001] The invention relates to the optimal scheduling of distributed power sources in a distribution network, in particular to a method for coordinated optimal scheduling of distributed power generation based on upper and lower double-layer optimization theories. Background technique [0002] With the development of social economy, the total energy consumption is also increasing rapidly, and energy has become an important factor restricting the development of the world economy. At the same time, the environmental problems caused by the massive consumption of conventional energy have attracted more and more attention. Therefore, in recent years, new energy generation such as wind energy and solar energy has been greatly supported and developed. The introduction of these new energy sources has impacted the current methods of centralized power generation, remote power transmission, and multi-twin distribution of large-capacity units. Distributed power generati...

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Problems solved by technology

[0003] At present, in the micro-grid composed of distributed new energy, both wind power and solar power are limited by the objective laws of nature, and the electric power that can be provided is random and volatile.

Therefore, in actual use, the reliability of power supply in a separate network is relatively poor. The operating experience of the microgrid shows that there are still many problems in the operation of the microgrid that need to be solved

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