EV-charging-controllability considered unit combination model and modeling method

Abstract

The invention discloses an EV-charging-controllability considered unit combination model and a modeling method. According to the EV-charging-controllability considered unit combination model and the modeling method, the output of a unit and total loads of an EV integrated controller serve as control objects, the EV integrated controller serves as an interaction platform of a power grid dispatching center and EVs, the dispatching center issues a charging command to the EV integrated controller, and the EV integrated controller controls the EVs in an administration region of the EV integrated controller after receiving the charging command to meet the command; constraints such as user charging requirement constraints, dispatching capacity range constraints and unit-side constraints are comprehensively considered, the minimum sum of the running cost of the unit and the dispatching cost of the EVs serves as an objective function, and the EV-charging-controllability considered unit combination model is built; the dispatching cost of the EVs is considered in the objective function of the model, the user charging requirement constraints are considered in the constraint conditions, the requirement of users for the electric quantity of the EVs serves as one condition which must be met when the dispatching center controls the EVs to be charged, and the vehicle attributes of the EVs are sufficiently considered.

Description

technical field [0001] The invention belongs to the technical field of electric power dispatching, and more specifically relates to a unit combination model and a modeling method considering the controllability of electric vehicle charging. Background technique [0002] Electric Vehicle (EV) uses new energy instead of petroleum as its main power source. It has the characteristics of low carbon emissions and environmental friendliness. It has gradually become the strategic industry direction of the world's major automobile manufacturing powers. [0003] The unit commitment (UC) problem is the content of power grid dispatching. The traditional unit commitment is based on the load forecast curve and the goal of the lowest unit operating cost to formulate the start-up plan of the unit; The load forecast curve and wind power forecast curve are used to formulate the start-up plan of thermal power units, aiming at the lowest operating cost of thermal power units, and the reserve ca...

AI Technical Summary

Problems solved by technology

[0005] When large-scale EVs are connected to the power grid, if EVs are used as pure loads and combined with traditional loads for unit combination arrangement, EV charging loads and traditional loads have similar behavioral rules, that is, EV charging will be carried out after users return home from get off work And other daily activities, then there will be a phenomenon of "peak on top of peak", which will greatly increase the cost of the unit; and for the dispatch center to directly use a single EV as the control object, it is feasible when the number of EVs is small However, when the number of EVs increases to tens of thousands, the efficiency of the power grid dispatching center to directly communicate with each EV is low; for the dispatching center to use the EV centralized controller as the control object for dispatching, the existing The technology does not consider the needs of users, and may interrupt the load at any time, causing inconvenience to users; it also does not consider the scheduling cost of electric vehicles

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