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A load optimization control method based on hybrid energy storage

A load optimization control and hybrid energy storage technology, applied in the direction of AC network load balancing, etc., can solve the problems of lack of integrated control method between storage and load, insufficient combination, and reducing the configuration capacity requirement of hybrid energy storage system.

Active Publication Date: 2016-07-06
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology

In the microgrid, the combination of load, energy storage, and distributed power supply operation control is not close enough, and there is a lack of integrated control method between storage and load, so as to reduce the dependence of microgrid on energy storage system and reduce the configuration of hybrid energy storage system. capacity requirements

Method used

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  • A load optimization control method based on hybrid energy storage
  • A load optimization control method based on hybrid energy storage
  • A load optimization control method based on hybrid energy storage

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specific Embodiment approach

[0037] The load optimization control method based on hybrid energy storage in this embodiment includes three parts: optimization target setting, constraint condition setting and model solution.

[0038] The optimization goal setting includes operation control goals and economic goals; the constraint condition setting includes power balance constraints, maximum power constraints, load switching time interval constraints, and load user experience constraints; the model is solved by a two-stage solution to obtain the hybrid energy storage Power value and load switching number.

[0039] (1) The operation control target is set as:

[0040] min J n = Σ i = 1 n | x i k + 1 - x i k ...

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Abstract

A load optimization control method based on hybrid energy storage, including three parts: optimization goal setting, constraint condition setting and model solution, wherein optimization goal setting includes operation control goal and economic goal; constraint condition setting includes power balance constraints, maximum power constraints, load switching time interval constraints, and load user experience constraints; the model solution obtains the hybrid energy storage power value and the number of load switching through a two-stage solution. The hybrid energy storage-based load optimization control method of the present invention can be applied to the evaluation and verification of micro-grid control technology, the method is reasonable and simple to implement, and can meet the actual requirements of micro-grid simulation experiments and technical verification. The invention is suitable for verification and application of energy storage technologies of scientific research institutions and enterprises.

Description

technical field [0001] The invention relates to a load optimization control method based on hybrid energy storage, which belongs to the technical field of electric power system microgrid. Background technique [0002] Supercapacitors and batteries are typical representatives of power-type energy storage components and energy-type energy storage components. They have strong complementarity in key characteristics such as power density, energy density, cycle life, and high and low temperature performance. Mixing the two It has the potential to greatly improve the performance of energy storage systems. [0003] The output power of the hybrid energy storage system is linearly adjustable, but its adjustment range is narrow, which is limited by cost; the adjustable capacity of the controllable load is large, but its adjustable power is stepped. How to realize the integrated control of the two is urgent issues that need resolving. [0004] The current research suppresses the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28
Inventor 曾伟孙旻范瑞祥
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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