Method for grid and province two-stage real-time generation schedule coordinative optimization under generalized tie line mode

Abstract

The invention discloses a method for grid and province two-stage real-time generation schedule coordinative optimization under a generalized tie line mode. The method is characterized by comprising the following steps that firstly, province scheduling generalized tie line plans are obtained through calculation; secondly, a grid scheduling department issues all the province scheduling generalized tie line plans to corresponding province scheduling departments, and the grid scheduling department obtains a generalized tie line plan of each grid scheduling side directly under the province scheduling through calculation; thirdly, sensitivity information is calculated; fourthly, all kinds of information are read; fifthly, the generalized tie line soft constraint of the corresponding province is added, soft constraint cost is added to a conventional optimization object at the same time, then a province-stage power grid mathematic model is formed, the generalized tie line soft constraint of each grid scheduling side directly under the province scheduling is added, soft constraint cost is added to the conventional optimization target at the same time, then a first area power grid mathematic model is formed, the whole-grid grid scheduling side generalized tie line constraint is added on the basis of the first mathematic model, and a second area power grid mathematic model is formed; sixthly, optimization calculation is started. The method for grid and province two-stage real-time generation schedule coordinative optimization under the generalized tie line mode has the advantages that calculation intensity is low and adaptability is high and is suitable for popularization and application in China scheduling mechanisms of all scales.

Description

technical field [0001] The invention relates to a method for coordinating and optimizing power generation plans, in particular to a method for coordinating and optimizing power generation plans in real time at two levels of grid and province under a generalized tie-line mode. The invention belongs to the technical field of power system scheduling automation. Background technique [0002] At present, with the gradual advancement and implementation of smart grid construction, according to the next day's electricity demand forecast, considering various constraints such as system balance constraints, unit operation constraints, and power grid operation constraints, optimize the preparation of the 96-point unit combination plan and output plan for the next day The degree of practicality of the power generation planning function has been gradually improved. The day-ahead scheduling plan supports three scheduling modes: energy-saving dispatching, power market, and three-public disp...

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Problems solved by technology

[0006] In order to solve the deficiencies of the existing technology, the purpose of the present invention is to provide a two-level grid-province real-time power generation plan coordination and optimization method under the generalized tie-line mode, which can solve the lack of effective adjustment of the prior day output plan of the provincial dispatching unit and the provincial power generation plan in the prior art. Adjusting the output plan of the directly subordinate network regulation and control unit to ensure the coordinated operation of the real-time plan and operation of the network provincial regulation

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