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Power grid access method of new energy system

An access method and new energy technology, applied in the field of energy storage, to achieve the effect of reasonable design, compact structure and simple operation

Pending Publication Date: 2022-05-03
STATE GRID GASU ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the traditional centralized low-voltage energy storage method, each 2.5MW energy storage unit needs to be equipped with a step-up transformer, and a reactive power compensation device and its step-up equipment also need to be invested

Method used

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Embodiment Construction

[0015] The technical solutions of the present invention are clearly and completely described below, and obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The orientation or positional relationship indicated is only for the convenience of describing the present invention and simplifies the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to the present invention. lim...

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Abstract

The invention discloses a power grid access method for a new energy system, and the method comprises the following steps: developing new energy power generation simulation and pre-input power grid network data, and building a new energy output interval model and a load prediction fuzzy model; new energy power generation is analyzed, and a power transmission network grid structure is optimized; new energy power generation accesses a power grid; new energy power generation scheduling is carried out, and a wind power and photovoltaic power generation power prediction system suitable for large-scale centralized access and a distributed wind power and photovoltaic power generation power prediction system are realized and perfected; an intelligent scheduling system suitable for batch-type power supply large-scale centralized access and an optimal scheduling system suitable for distributed new energy power are established, a power distribution network energy optimal management system containing multiple energy sources is realized, and the microgrid economic operation theory and technology are mastered; the invention discloses operation control of new energy power generation access, belongs to the technical field of energy storage, and particularly relates to a power grid access method of a new energy system.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and specifically refers to a grid connection method for a new energy system. Background technique [0002] With the rapid development of power electronics technology and the strong support of national policies, electrochemical energy storage systems have been widely used in many fields such as peak regulation and frequency regulation of thermal power plants, smoothing power fluctuations of wind power and photovoltaic power generation, and peak regulation of user-side backup power. [0003] At present, in new energy projects, conventional energy storage methods are often used, that is, multiple clusters of battery racks are connected in parallel to a centralized low-voltage PCS (Process Control System, process control system), and multiple centralized low-voltage PCSs are connected in parallel, and then upgraded The voltage is boosted by the transformer, connected to the integrated circuit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/46
CPCH02J3/38H02J3/381H02J3/46H02J3/004H02J3/008H02J2203/10H02J2203/20H02J2300/20H02J2300/24H02J2300/28H02J2300/40Y02E10/56Y02E10/76
Inventor 吕清泉马明张睿骁张健美陶钰磊高鹏飞张彦琪张珍珍李津周强王定美张金平朱红路蒋婷婷史淯城
Owner STATE GRID GASU ELECTRIC POWER RES INST
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