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A super large-scale hybrid energy storage power balance control system and method

A hybrid energy storage, ultra-large-scale technology, applied in the direction of AC network load balancing, etc., can solve the problems of short life of energy storage batteries, uneven power distribution of energy storage batteries, etc.

Active Publication Date: 2022-07-19
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0003] This application provides a super-large-scale hybrid energy storage power balance control system and method to solve the problems of short life of energy storage batteries and uneven power distribution between energy storage batteries caused by the prior art

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  • A super large-scale hybrid energy storage power balance control system and method
  • A super large-scale hybrid energy storage power balance control system and method
  • A super large-scale hybrid energy storage power balance control system and method

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Embodiment Construction

[0032] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the application. Therefore, the application is not limited by the specific implementation disclosed below.

[0033] figure 1 A super-large-scale hybrid energy storage power balance control system provided for this application includes: a multi-level inverter MMC, a modular multi-level inverter state evaluation unit, a network channel CAN, a power balance controller, and a hybrid storage device. MMC output optimization unit;

[0034] The modular multi-level inverter MMC is used to convert the electrical energy on the AC grid into a form that can be stored by energy storage batteries and supercapacitors, and convert the stored electrical en...

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Abstract

The invention discloses an ultra-large-scale hybrid energy storage power balance control system, comprising: a multi-level inverter MMC, a modular multi-level inverter state evaluation unit, a network channel CAN, a power balance controller, and a hybrid energy storage device. MMC output optimization unit; modular multi-level inverter MMC, used to convert the electrical energy on the AC grid into a form that can be stored by energy storage batteries and super capacitors; modular multi-level inverter state evaluation unit, used to evaluate The state of charge of each modular multi-level inverter; the network channel CAN, used for communication between each modular multi-level inverter; the power balance controller, used to make the overall energy storage substation meet the target power At the same time, the state of charge of each modular multi-level inverter is consistent; the hybrid energy storage MMC output optimization unit is used to reasonably allocate the probability of super capacitor and energy storage battery participating in the work, and solve the problem of energy storage battery caused by the existing technology. The problem of short life and uneven power distribution among energy storage batteries.

Description

technical field [0001] The present application relates to the technical field of ultra-large-scale energy storage, in particular to an ultra-large-scale hybrid energy storage power balance control system, and a method for ultra-large-scale hybrid energy storage power balance control. Background technique [0002] With the increasing depletion of fossil fuels and the continuous application of new energy technologies such as wind power and photovoltaics, the problems of intermittency, randomness and small inertia of new energy power generation have become increasingly prominent, which seriously affects the stability of the power grid. The application of large-scale energy storage technology is one of the main technical means to solve this problem. However, the existing large-scale energy storage technology of lithium batteries will greatly shorten the life of lithium batteries when faced with large amplitude and fluctuating charge and discharge currents. In addition, the probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 李相俊闫士杰王上行贾学翠王立华杨水丽徐少华全慧
Owner CHINA ELECTRIC POWER RES INST
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