Method and system for optimizing power transmission plan and pumped storage power generation plan

Abstract

The invention discloses a method and system for optimizing a power transmission plan and a pumped-water storage power generation plan. The method includes: minimizing the adjustment degree of a generating set at a power receiving end as an optimization goal, and establishing a power generation at a power transmitting end that considers peak regulation requirements at a power receiving end The hybrid optimization model of planning and pumped storage power plant generation plan; determine the constraints of the established hybrid optimization model; solve the established hybrid optimization model according to the determined constraints, and obtain the optimal transmission end power generation plan and pumped storage Power generation plan optimization scheme. The invention optimizes the power generation plan of the transmission end and the power generation plan of the pumped storage power plant through the established hybrid optimization model, so that the power transmission end and the pumped storage power plant can participate in the peak regulation of the power receiving end to a greater extent, and reduce the cost of the power receiving end unit. Adjusting the degree to the minimum value improves the operating economy of the unit and ensures the frequency security of the power grid during the period of rapid load changes. The invention can be widely used in the field of power system scheduling optimization.

Description

technical field [0001] The invention relates to the field of power system scheduling optimization, in particular to a method and system for optimizing power transmission plan and pumped storage power generation plan. Background technique [0002] Due to the uneven distribution of energy and loads, long-distance, large-capacity, and ultra-high-voltage power transmission has become the development trend of my country's power grids. Regional power grids such as the Southern Power Grid, Central China Power Grid, and East China Power Grid have formed large-scale AC-DC interconnected grids (i.e. AC-DC asynchronous networking) pattern. Reasonable cross-regional power grid dispatching plan is of great significance to the complementary role of regional power resources and loads. [0003] Taking China Southern Power Grid as an example, the load curve of Guangdong Power Grid presents a typical characteristic of three peaks and three valleys in summer, and a typical characteristic of tw...

AI Technical Summary

Problems solved by technology

[0005] In actual operation, if the power generation plans of Xidian and pumped storage power plants cannot well match the load characteristics of Guangdong power grid, they will not be able to make full use of the rapid adjustment capabilities of pumped storage units, which will easily cause frequent adjustments and failures of units in Guangdong Province Disorderly adjustment, anti-peaking phenomenon occurs, and even poses a threat to the frequency security of the main network of China Southern Power Grid

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