Multi-time-scale optimization method for active distribution network considering the coordination and interaction of source, network and load

Abstract

The present invention provides a multi-time-scale optimization method for an active distribution network considering the coordination and interaction of source, network and load. Next day 24h load forecasting and distributed power output forecasting; (2) Considering the constraints on the number of switching operations, divide the next day’s 24h load curve into time periods; (3) According to the load curve segmentation results, carry out the source network coordination of multiple time periods before the day optimization; (4) based on the day-ahead power grid dispatching plan and distributed power output arrangement, perform intraday flexible load optimal scheduling; (5) make full use of distributed power and various Flexible loads to achieve real-time power balance between source and grid loads. The invention realizes the rational distribution of power flow, can effectively reduce network loss, improve node voltage level and power quality, and improve the economy and reliability of power grid operation.

Description

technical field [0001] The invention belongs to the technical field of distribution network operation control, and in particular relates to a multi-time-scale optimization method for an active distribution network considering the coordination and interaction of a source network and a load. Background technique [0002] The traditional distribution network is a one-way power distribution network based on the grid power supply and user power consumption, and it is a dual structure of "grid-load". With the continuous growth of electricity demand, the shortage of traditional energy sources, and the opening of the electricity market, the power grid is developing towards high efficiency, flexibility, intelligence, and sustainability. Sustainability is manifested in the scale-up of distributed power sources, especially a large number of renewable energy sources. access and application. With the access of a large number of distributed power sources, the distribution network has bee...

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Problems solved by technology

[0003] For the large-scale access of distributed power, no effective coordinated control scheme has been proposed at the system level, and the research focuses on the site selection and capacity optimization of distributed power; in terms of source-network-load coordination and interaction, it focuses on Considering network-load coordination, source-load coordination or source-network coordination, the coordination optimization of the three is rarely involved

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