Coordinated Optimal Scheduling Method Considering Power Supply Flexibility Margin

Abstract

The present invention is a wind-solar-water-fire complementary coordinated optimal scheduling method considering the power supply flexibility margin, which is characterized in that it includes the following steps: establishing a mathematical model for calculating the power supply flexibility margin for upward adjustment and downward adjustment flexibility margin; constructing a system based on The goal is to minimize the sum of coal-burning costs and pollution gas emission control costs, and consider the wind power, water and fire complementary coordination and optimization scheduling model of power supply flexibility margin; formulate "priority for full consumption of wind power and photovoltaics, follow up with hydropower regulation to stabilize system net Load fluctuations, and finally the thermal power will bear the system's remaining net load" hierarchical scheduling strategy. The traditional particle swarm optimization algorithm is used to calculate the overall optimal output power of hydropower, the heuristic priority method is used to determine the combination of thermal power units, and the optimal output power of thermal power units is calculated by improving the particle swarm optimization algorithm. Generation schedule within the dispatch cycle. This method can effectively improve the power supply flexibility margin and promote the consumption of renewable energy.

Description

technical field [0001] The invention relates to the field of multi-energy power system complementary coordination optimization dispatching, and is a wind-solar, water-fired complementary coordination optimization dispatching method considering power supply flexibility margin. Background technique [0002] The multi-energy power system with large-scale renewable energy has a wide variety of power sources and a complex structure, which comes from the double superposition of uncertainties in power sources and loads, which puts forward higher requirements for system backup, and the operational flexibility of multi-energy power systems has become the current research hotspot. The central idea of ​​power system flexibility is to "response to change by change", which is the ability to optimally deploy a variety of resources with adjustment capabilities to respond to random changes in power supply, grid and load within the system at the cost of a certain cost. Fully analyzing the f...

AI Technical Summary

Problems solved by technology

[0003] Existing studies on multi-source complementary coordinated optimal dispatching either have few types of power sources, or are simply equipped with sufficient reserve capacity to deal with the impact of renewable energy uncertainties. risk; on the other hand, equipped with sufficient spare capacity will inevitably result in a large amount of spare redundancy, resulting in more economic losses

In terms of flexibility, most of them focus on principle analysis and qualitative evaluation, and lack of integration with actual production

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