A method and system for dynamic power aggregation of distributed power generation and energy storage devices
A technology for distributed power generation and energy storage devices, which is applied to circuit devices, AC networks with the same frequency from different sources, electrical components, etc. Problems such as the method of dynamic polymerization of the device to achieve the effect of improving the controllability
Active Publication Date: 2022-03-04
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology
However, lithium battery energy storage technology is not yet mature in terms of large-scale integration
[0004] Distributed energy storage system, due to its scattered output, poor controllability, and lack of corresponding scheduling means, it is difficult to realize the potential of its auxiliary power system for safe operation such as peak shaving and valley filling, frequency modulation, voltage regulation, and system security support. The potential of distributed energy storage devices, as well as the coordination and cooperation with other power generation devices, requires reasonable aggregation of their output. At present, there is no accurate and efficient method for dynamic aggregation of distributed energy storage devices and other power generation devices, which cannot meet the needs of power generation devices. Real-time scheduling needs
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[0054] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.
[0055] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...
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The invention provides a method and system for dynamic power aggregation of distributed power generation and energy storage devices. The method determines the power transfer distribution factors of nodes other than the reference node relative to all branches of the target power system, the total power flow aggregation target of the system and the power flow regulation target quantity of each branch, and the total output of the distributed energy storage device. Power, according to the power flow control target quantity of each branch of the system and the power transfer distribution factor, determine the power aggregation value of the power generation device and the energy storage device connected to the target power system, and determine the power aggregation value of the power generation device and the energy storage device according to the power aggregation value of the power generation device and the energy storage device Power output to the target power system. The method and system accurately and efficiently dynamically aggregate all power generation devices and energy storage devices connected to the power system based on the power transfer distribution factors of nodes connected to the target power system relative to all branches, and fully utilize distributed energy storage. The due potential of the device improves the controllability of the distributed energy storage device.
Description
technical field [0001] The present invention relates to the field of power system power distribution, and more particularly, to a method and system for dynamic aggregation of power of distributed generation and energy storage devices. Background technique [0002] The energy problem is the basic problem of human survival and development and social operation. The contradiction between the traditional energy structure and the sustainable development of human beings and the increasing energy demand of human beings has become increasingly acute. New energy structures and supply methods have emerged as the times require. The key to solving the above contradictions lies. This has prompted the birth of a new energy structure "Energy Internet" featuring renewable energy and Internet technology. As one of the cores of the energy Internet, with the continuous increase of grid-connected installed capacity of new energy, its source fluctuation and intermittent problems have brought gre...
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IPC IPC(8): H02J3/38H02J3/28H02J3/46H02J3/06
CPCH02J3/381H02J3/28H02J3/46H02J3/06H02J2203/20
Inventor 李相俊李文启张天庆惠东饶宇飞贾学翠修晓青王骅杨水丽全慧
Owner CHINA ELECTRIC POWER RES INST