Monthly maintenance plan optimization method of generating unit based on two layers of plans

Abstract

The invention discloses a monthly maintenance plan optimization method of a generating unit based on two layers of plans. The method comprises following steps of (1) counting basic data; (2) carrying out the plan of the first layer: unit maintenance optimization considering balance of the electric power and electric quantity; (3) carrying out the play of the second layer: safety checking considering maintenance requirements of a power transmission and transformation device; (4) judging passing conditions of the safety checking; and (5) adding generating unit maintenance constraint. According to the invention, the calculation processes are simple; the calculated amount is small; the development difficulty is small; the calculation method is highly practical; and the calculation results are precise. Compared with other methods, the provided method is remarkably advantageous in that (1) the maintenance plan requirements of the power transmission and transformation device and the balance requirements of the electric power and the electric quantity are comprehensively considered, and actual operation requirements are met; and (2) based on a two-layer model, the original problem is decoupled into two sub-problems, so the model solving difficulty level is reduced and the solvability of the model is ensured.

Description

technical field [0001] The invention relates to the technical field of electric power dispatching optimization, in particular to a method for optimizing a monthly generating set maintenance plan based on two-level planning. Background technique [0002] The monthly maintenance plan of generating units is an important business in the arrangement of power system dispatching and operation mode. It is required to reasonably arrange the outage plan of generating units according to the grid load forecast and the maintenance plan of power transmission and transformation equipment before monthly execution. [0003] The preparation of the monthly power generation plan maintenance plan needs to meet two requirements: 1) to meet the requirements of power balance, and the generating units in the operating state must meet the relevant requirements of operation and backup on the basis of load forecasting; 2) to meet the grid section control requirements, considering the power transmission ...

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Problems solved by technology

[0004] There are mainly three modes for the application of similar technologies: 1) Only consider the power balance requirements. In actual operation, when the cross-section control requirements are difficult to meet, temporarily adjust the start-up mode of the unit to meet the cross-section control requirements. This method has power supply security. Hidden dangers, which are less and less used in practice; 2) Mainly considering the requirements of power grid section control, the operating reserve margin is increased to meet the requirements of power balance and section control at the same time. Insufficient, the operating efficiency of the generator set is reduced; 3) Considering the maintenance plan of power transmission and transformation equipment and the requirements of power balance at the same time, comprehensive optimization solution, the data model established by the above model is too complicated, and there is currently no practical solution method

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