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Electric vehicle charging optimization scheduling method considering transmission and distribution cooperation and containing reactive voltage constraints

A technology for electric vehicles and optimized dispatching, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve problems such as complexity, power grid security and economic threats

Active Publication Date: 2020-12-01
NANJING INST OF TECH
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  • Application Information

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Problems solved by technology

However, since large-scale disorderly charging and discharging of electric vehicles connected to the grid will bring huge security and economic threats to the power grid, it is currently a major difficulty to study the orderly charging and discharging of electric vehicles and optimize economic dispatch.
At the same time, it is more complicated to deal with large-scale nonlinear programming problems, so it is also studied for mixed nonlinear large-scale solving problems

Method used

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  • Electric vehicle charging optimization scheduling method considering transmission and distribution cooperation and containing reactive voltage constraints
  • Electric vehicle charging optimization scheduling method considering transmission and distribution cooperation and containing reactive voltage constraints
  • Electric vehicle charging optimization scheduling method considering transmission and distribution cooperation and containing reactive voltage constraints

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Embodiment Construction

[0145] The present invention is described in further detail now in conjunction with accompanying drawing.

[0146] refer to figure 1 The general flowchart of the present invention described, concrete steps are as follows:

[0147] Step 1: Obtain real-time data of the power grid;

[0148] Step 2: Establish an electric vehicle charging optimization model for transmission and distribution coordination with reactive power and voltage constraints, with the cost of traditional unit generation and wind power generation as the objective function for the transmission network and the integrated peak-valley difference and network loss as the objective function for the distribution network;

[0149] Step 3: Add integral constraints to realize the delivery of power generation energy, and adopt a preprocessing strategy for the transmission network model to improve the efficiency of model solution;

[0150] Step 4: Using the Benders decomposition method, the objective function of the trans...

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Abstract

The invention relates to an electric vehicle charging optimization scheduling method considering transmission and distribution cooperation and containing reactive voltage constraints. According to themethod, a unit combination with the optimal cost is obtained by adopting a particle swarm algorithm improved on the basis of bacterium chemotaxis for a power transmission network model, and the solving efficiency of the model is improved by increasing direct-current power flow constraints; the power transmission network generator set model is divided into main and sub problems for iterative solution through Benders decomposition, and the solution efficiency of the model is further improved; photovoltaic unit power generation is used for cooperative scheduling, and the system operation efficiency is guaranteed; and on the premise that a distribution network layer considers security constraints, a node preprocessing strategy is adopted, a solution space range is reduced, and the overall solution efficiency is improved.

Description

technical field [0001] The invention belongs to the field of power system control, and in particular relates to an electric vehicle charging optimization scheduling method considering transmission and distribution coordination including reactive power and voltage constraints. Background technique [0002] Under the circumstances of today's energy crisis and increasingly serious environmental pollution problems, electric vehicles have ushered in a major opportunity for their own development. Major countries in the world have successively introduced and implemented a number of policies and measures to support the research of electric vehicles and promote the new energy vehicle industry. The development has achieved certain results so far. However, since large-scale disorderly charging and discharging of electric vehicles connected to the grid will bring huge security and economic threats to the power grid, it is currently a major difficulty to study the orderly charging and di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/32H02J3/38H02J3/46
CPCH02J3/00H02J3/008H02J3/381H02J3/322H02J3/466H02J3/472H02J2203/10H02J2203/20H02J2300/24H02J2300/28Y02E10/56Y02E70/30Y02T10/40
Inventor 陈光宇许翔泰张仰飞郝思鹏曹吴彧肖汉
Owner NANJING INST OF TECH
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