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Distributed micro-grid dispatching method

A scheduling method and micro-grid technology, applied in the fields of photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of ignoring environmental benefits and inapplicability, and achieve the effects of reducing costs, improving utilization, and reducing environmental impact.

Pending Publication Date: 2021-08-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technical solutions always only consider the optimal economic cost, while ignoring the environmental benefits, which are obviously not applicable in the current social background

Method used

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Embodiment Construction

[0067] In a specific embodiment of the present invention: a distributed microgrid scheduling method proposed by the present invention is in figure 2 It has been verified in the simplified microgrid system shown, and the algorithm flow is as follows figure 1 shown.

[0068] Specifically, first calculate the cost micro-increase rate according to the following formula,

[0069]

[0070] In the formula, P i Indicates the output power of the i-th traditional power generation unit; r i Indicates the power generation cost C of the i-th traditional power generation unit i For output power P i The derivative of , that is, the slight increase rate of power generation cost; k i Indicates the power generation cost E of the i-th traditional power generation unit i For output power P i The derivative of , that is, the incremental cost of additional cost; q i Indicates the total cost of the i-th traditional power generation unit against the output power P i The derivative of , t...

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Abstract

The invention relates to a distributed micro-grid dispatching method, which considers the regional distribution characteristics of power generation and energy storage resources in a micro-grid and the differentiated economic and environmental appeals of different subjects such as renewable energy power generation and energy storage. The method comprises the following steps: firstly, the structural composition of the micro-grid and economic and environmental appeals of each unit are analyzed; secondly, a micro-grid energy management model is established based on an equal-cost micro-increasing rate criterion, and the micro-grid energy management model comprises a target function and constraint conditions of micro-grid energy management; according to the method, the power generation cost and the pollutant discharge amount in the micro-grid system dispatching process are comprehensively considered, and the novel micro-grid dispatching method is designed to achieve the maximum economic benefits and the maximum environmental benefits.

Description

technical field [0001] The invention belongs to the field of power system operation optimization, and in particular relates to a distributed micro-grid scheduling method. Background technique [0002] Microgrid is an important link in the development of clean and green power system. The microgrid can absorb distributed renewable energy power generation locally, reduce transmission loss and curtailment of wind and light, improve the utilization rate of renewable energy, and reduce pollutant emissions caused by traditional fossil energy power generation, which is in line with the economical efficiency of power system operation. and environmental requirements. [0003] The traditional microgrid dispatching method is centralized. Although the dispatching is accurate, it requires the dispatching center to obtain the information of all units within the dispatching range, which has high requirements on the topology of the communication network. Moreover, due to the large number of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/48H02J3/32H02J3/00
CPCH02J3/381H02J3/48H02J3/32H02J3/003H02J2203/10H02J2203/20H02J2300/20H02J2300/24H02J2300/28Y02E70/30Y02E10/56
Inventor 徐扬秦川韦琦张紫涛
Owner HOHAI UNIV