Medium and long term electricity purchase planning method capable of considering three-public-service-related consumption schedule and electricity purchase cost

Abstract

The invention provides a medium and long term electricity purchase planning method capable of considering a three-public-service-related consumption schedule and the electricity purchase cost. The method comprises the steps of 1, building a three-public-service-related consumption schedule constraint model which is capable of meeting the condition that the deviation between the three-public-service-related consumption schedule of each unit and an ideal three-public-service-related consumption schedule is in a given range; 2, building a production run constraint model of each unit; 3, considering different grid purchase prices of different units, building an electricity purchase cost objective function model of the units at a plurality of optimizing months, and calculating the value, meeting the three-public-service-related consumption schedule deviation constraint and the production run constraint, of the electricity purchase cost objective function model, wherein the electricity purchase cost objective function model enables the purchase cost of all units at the optimizing months to be minimum. By using the medium and long term electricity purchase planning method, the problem that the three-public-service-related consumption schedule contradicts with the electricity purchase cost in the medium and long term electricity purchase planning is solved, the electricity purchase plan meets the three-public-service-related consumption schedule requirements, and the electricity purchase cost is reduced as far as possible.

Description

technical field [0001] The invention relates to the field of electric power automation, in particular to a medium- and long-term power purchase planning method considering the progress of three projects and the cost of power purchase. Background technique [0002] At present, the preparation of medium- and long-term power generation plans in various provinces in my country must meet the three requirements, that is, the completion progress of the annual basic power generation of each unit is basically consistent. Due to various reasons, the on-grid electricity prices of different units are not the same, but the annual basic electricity plan is issued by the Economic and Trade Commission, and there is no linear relationship between the annual basic electricity plan of the unit and the on-grid electricity price. According to the goal of the lowest power purchase cost, units with low prices should generate more power, but the constraints of the three public demands often conflic...

AI Technical Summary

Problems solved by technology

Due to various reasons, the on-grid electricity prices of different units are not the same, but the annual basic electricity plan is issued by the Economic and Trade Commission, and there is no linear relationship between the annual basic electricity plan of the unit and the on-grid electricity price

According to the goal of the lowest power purchase cost, units with low prices should generate more power, but the constraints of the three public demands often conflict with the power purchase cost. In addition, the planning needs to take into account the power balance of multiple months of the year, the total power consumption of all units Completion of the electricity status, etc., the planning process is complicated. In the actual mid-to-long-term planning process, it is difficult to meet the three public schedule requirements while also taking into account the optimization of power purchase costs.

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