Micro-grid relay protection and automation integrated intelligent protection system

A relay protection and intelligent protection technology, which is applied in the fields of electrical components, energy industry, circuit devices, etc., can solve the problems of restricting the promotion of distributed power supply technology, working principle and complex action logic, etc., and achieve the realization of micro-grid relay protection and The effect of automation integration

Active Publication Date: 2010-10-27
BEIJING SIFANG JIBAO AUTOMATION +2
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Problems solved by technology

These changes brought about by the access of distributed power to the power distribution system may make the working principle and action logic of the protect

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  • Micro-grid relay protection and automation integrated intelligent protection system
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  • Micro-grid relay protection and automation integrated intelligent protection system

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[0024] specific implementation plan

[0025] The technical solution of the present invention will be further described in detail below according to the drawings in the description and in combination with specific embodiments.

[0026] The micro-grid intelligent protection system includes a micro-grid intelligent management device and a micro-grid intelligent terminal protection device. The integrated intelligent protection system collects the status information of all the switches of the micro-grid reported by the micro-grid intelligent terminal protection device through the micro-grid intelligent management device, and analyzes the operation mode of the micro-grid, that is, determines whether the micro-grid is in grid-connected or isolated grid status and distributed When the operation mode of the micro-grid changes, the micro-grid intelligent management device will send the analyzed latest operation mode to each micro-grid intelligent terminal protection device in the micro-...

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Abstract

The invention discloses a micro-grid relay protection and automation integrated intelligent protection system. The system analyzes the running state of a micro-grid in advance by acquiring the running information of all equipments in the micro-grid; and when the running mode of the micro-grid changes, the micro-grid intelligent protection system acquires a latest running mode by analyzing and sends the latest running mode to each intelligent equipment in the micro-grid through a communication network, and the intelligent equipment automatically switches to the setting corresponding to the current running mode according to the current running mode. The equipment in the micro-grid intelligent protection system can be adaptively adjusted according to the change of the running mode of the micro-grid, thereby solving the problem that in a grid connected mode and an isolated grid mode of the micro-grid, relay protection and automation devices are not corresponding. The system also integrates the mode conversion control of the micro-grid simultaneously, thereby realizing the integration of relay protection and automation of the micro-grid.

Description

technical field [0001] The invention belongs to the field of power system automation, and in particular relates to a relay protection and automation technology for a micro-grid system connected to a distributed power supply. Background technique [0002] With the continuous innovation of distributed generation technology, the gradual exhaustion of conventional energy sources and the increasing environmental pollution, countries all over the world are paying more and more attention to distributed generation technology (Distributed Generation-DG). [0003] Distributed power generation generally refers to a small power generation system connected to the power distribution system that is miniaturized, modularized, decentralized, and arranged near the user to provide power to the user with a generating power of several thousand watts to 50 megawatts. The types of distributed power mainly include: micro-gas turbines, solar photovoltaic cells, wind generators, batteries, flywheels,...

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Application Information

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IPC IPC(8): H02J13/00
CPCY02P80/14
Inventor 许健刘云胡玉峰陈曦陈建斌秦应力承文新祝朝晖郭力王成山
Owner BEIJING SIFANG JIBAO AUTOMATION
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