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Centralized coordination control method of distributed power supply

A distributed power and coordinated control technology, applied in the fields of energy storage, greenhouse gas reduction, climate sustainability, etc., can solve problems affecting the stable operation of microgrids and the life of energy storage, improve efficiency and reliability, and improve reliability. Scheduling and stability, the effect of improved control mode

Inactive Publication Date: 2020-04-10
NARI NANJING CONTROL SYST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Other deep discharge conditions will affect the stable operation of the microgrid and the life of energy storage

Method used

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  • Centralized coordination control method of distributed power supply
  • Centralized coordination control method of distributed power supply
  • Centralized coordination control method of distributed power supply

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Experimental program
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Embodiment 2

[0122] When there are multiple energy storage units in the microgrid system, using the highest and lowest state of charge parameters of all energy storage units as the judgment condition for operating mode switching may lead to confusion and unreasonable mode switching situations. In order to avoid the occurrence of the above situation, the present invention uses the average value of the charging state parameters of all energy storage units as the judgment condition for switching the operation mode, as shown in the following formula. The other cases are similar to the single energy storage case.

[0123]

[0124] In the formula, S ESSi is the capacity of energy storage unit i (i=1,2...n), SOC i is the state of charge of the i-th energy storage unit, and SOC is the calculated average value.

[0125] Simulation and Verification

[0126] The present invention is to verify the effectiveness of the proposed centralized coordinated control method for distributed power sources....

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Abstract

The invention discloses a centralized coordination control method of a distributed power supply. The centralized coordination control method specifically comprises the following steps: acquiring a current charging state parameter of an energy storage unit in a microgrid system; comparing the obtained current charging state parameter of the energy storage unit with a charging state parameter set bythe microgrid system; and based on a comparison result, selecting an appropriate control strategy to carry out centralized coordination control on each distributed power supply in the microgrid system. By comparing the obtained current charging state parameter of the energy storage unit with the charging state parameter set by the microgrid system and switching the three control modes, the schedulability of the microgrid system is improved, and the charging balance of the energy storage unit is smoothly realized.

Description

technical field [0001] The invention belongs to the technical field of distributed power supply control, and in particular relates to a centralized coordinated control method of distributed power supply. Background technique [0002] Energy is an important material basis for economic and social development. In recent years, energy demand has continued to grow, fossil energy has been increasingly depleted, nuclear energy development has been restricted, and energy issues have frequently become severe challenges faced by countries all over the world. At the same time, the aging of the traditional power system structure and the continuous improvement of users' requirements for power quality make the development and utilization of renewable energy a perfect way for the sustainable development of society. Distributed generation (DG) has received more and more attention in the 21st century due to its advantages of environmental protection, high efficiency, flexibility, and low in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/46H02J3/24
CPCH02J3/24H02J3/32H02J3/46Y02E70/30
Inventor 唐伟韩韬杜红卫赵景涛吴琳吴雪琼王必恒宋英华孙保华候晓磊黄素娟范炳建吴永佚徐骏梁顺尹宏旭潘汉广戴玮姚德泉王双虎黄丹邵阳刘军傅强仵江鹏蒋国栋胡力文席旸旸吕亚宋伟张敏张玮徐昱
Owner NARI NANJING CONTROL SYST
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