A production simulation method for coordinated operation of power grids in multiple provinces

Abstract

A method for simulating the coordinated operation production of multi-province power grids, the method includes the following steps: 1) calculating the independent operation condition production simulation operation mode of each province, and obtaining power exchange curve with an external power grid; 2) according to the production simulation calculation results, calculating the positive and negative regulation capacity that each province can provide to other provinces s under the condition that the starting mode of the thermal power unit is unchanged; 3) according to the power exchange demand and the positive and negative regulation ability of each province and region under the independent operation condition, adopting the quadratic programming model to solve the coordinated operation mode of multiple provinces and regions; 4) gradually increasing the transmission capacity of each province, repeatedly solving the multi-provincial coordination optimization model in the step 3), and calculating the coordinated operation mode of the multi-provincial power grid under different transmission capacity constraint of each provincial section. The method can be used to simulate the coordinated operation and production of multi-provincial power grids adapted to the dispatching mode of provinces in China. It is suitable for the dispatching mode arrangement of power grids in China and thedetermination of the power of provincial tie lines.

Description

technical field [0001] The invention relates to the field of power system planning and operation dispatching, in particular to a production simulation method for coordinated operation of multi-provincial power grids. Background technique [0002] With the large-scale grid integration of wind power, photovoltaic and other new energy power generation, the peak load regulation pressure on the power grid is increasing. Due to the lack of local capacity to absorb new energy, the provinces and regions in the Northwest need to rely on power transmission and multi-province coordinated operation to solve the problem of new energy curtailment. Coordinated operation of multi-provincial power grids can theoretically combine multiple provinces into one province for unified optimization, but there are the following problems: (1) It does not conform to my country's grid dispatching model with provinces as entities; (2) Multi-provinces When merged into one province for production simulation...

AI Technical Summary

Problems solved by technology

Coordinated operation of multi-provincial power grids can theoretically combine multiple provinces into one province for unified optimization, but there are the following problems: (1) It does not conform to my country's grid dispatching model with provinces as entities; (2) Multi-provinces When merged into one province for production simulation, it causes uneven start-up

(3) Unbalanced start-up mode leads to excessive power exchange of tie lines

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