Control method of energy management system for large-scale VRB optimized operation

A technology of energy management system and control method, which is applied in the field of energy management system control of large-scale VRB optimized operation, and can solve the problems of complex operation control and many factors involved

Active Publication Date: 2019-11-05
JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large number of modules, the control of large-scale energy storage systems usually involves many factors, and the operation control is more complicated

Method used

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  • Control method of energy management system for large-scale VRB optimized operation
  • Control method of energy management system for large-scale VRB optimized operation
  • Control method of energy management system for large-scale VRB optimized operation

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Embodiment Construction

[0032] An energy management system control method for large-scale VRB optimal operation of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] Such as figure 1 As shown in the present invention, a large-scale VRB optimized operation energy management system control method, its energy storage unit module control is to coordinate the charging and discharging of each energy storage module, so as to achieve the power demand P issued by the upper layer control BE , after the charge and discharge power energy storage system issues a power command, since each energy storage unit starts and stops independently, the energy storage control system needs to determine the energy storage unit module and power value that participate in the charge and discharge task according to the power demand;

[0034] In practical applications, due to the needs of the upper-layer power command, it often occurs that the operation i...

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Abstract

The invention relates to a control method of an energy management system for large-scale VRB optimized operation, which is characterized by comprising the steps of establishing a large-scale energy storage efficiency mathematical model; determining the total efficiency of the energy management system according to the large-scale energy storage efficiency mathematical model and a power-efficiency fitting relation of an energy storage unit module; and solving the number of energy storage units and the power of the energy storage unit module at each sampling moment, and the like. According to theinvention, the power-efficiency relation is fitted based on the charge-discharge simulation data of different stored energy powers, and the optimized operation mode of the number of energy storage participating charge-discharge modules is reasonably selected according to a specific energy storage charge-discharge power command by combining the structure of the large-scale VRB energy storage system. The analysis of examples shows that the control strategy can effectively improve the charge-discharge efficiency of the energy storage system, is conducive to the balance of the state of charge ofthe stored energy, avoids the situation that the same energy storage unit is over-charged or over-discharged and reduces the service life loss of the energy storage system. The control method has theadvantages of scientific and reasonable method, strong applicability, good effect and the like.

Description

technical field [0001] The invention relates to the technical field of large-scale energy storage, in particular to an energy management system control method for optimal operation of large-scale VRBs. Background technique [0002] Wind energy is one of the more mature new energy sources at present. my country is rich in wind resources and its installed capacity is also increasing year by year. Wind power has become an important part of my country's power energy supply. However, with the gradual increase of wind power grid-connected scale, the disadvantages of wind power have gradually emerged. First of all, compared with thermal power generation, wind power generation has uncontrollable power output, large fluctuations, and strong randomness. These characteristics bring difficulties to the formulation of power system power generation plans, especially when wind power participates in power system peak-shaving applications , the grid power supply is at a low load at night, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/38H02J3/48
CPCH02J3/32H02J3/48
Inventor 李德鑫李军徽胡达珵王帅吕项羽田春光王佳蕊燕博张晓驰葛长兴李成钢王伟张海锋刘畅张家郡高松孟涛姜栋潇庄冠群
Owner JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD
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