Control method of distributed power grid-connection interface system

Abstract

The invention discloses a distributed power grid-connection interface system and a control method thereof. The distributed power grid-connection interface system is installed on an outgoing line grid side of a distributed power station and comprises a master control unit, an oriented distributed power station service unit, a user-oriented service unit, a grid-oriented enterprise service unit and a grid-oriented protection service unit, wherein the service units are respectively connected with the master control unit. The distributed power grid-connection interface system allows for grid connection for single units for distributed power generation, provides configurable interfaces, provides standard XML (extensible markup language) data services, is convenient for application extension, meets the requirements in technical specifications for distributed generations accessing to power distribution network, has uniform access standards, and is lower in accessing cost and technical difficulty.

Description

technical field [0001] The invention belongs to the technical field of distributed power generation, and in particular relates to a distributed power supply grid-connected interface system and a control method. Background technique [0002] Distributed power generation, with its advantages of small capacity, low voltage level, close to the load, and little impact on the power grid, has been widely used in industrial plants, public buildings, and residential roofs. Distributed power generation can make full use of the idle space of factories, mines, schools, and residential buildings, and avoid the site constraints of centralized construction. Especially in the face of the real conditions of dense living in the central and eastern parts of my country, its large-scale promotion and application prospects are extremely broad. [0003] At present, the country is vigorously promoting the application of distributed power generation, and the State Grid Corporation has also issued th...

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Problems solved by technology

[0009] The technical problem solved by the present invention is to overcome the problem that distributed power generation adopts traditional grid-connected secondary equipment of conventional power plants, the access technology is complicated, the equipment cost is high, and it is not conducive to the large-scale popularization and application of distributed power generation. The present invention can solve the problem of The problem of grid connection of distributed power generation of a single device, providing configurable interfaces, providing standard XML data services, facilitating application expansion, meeting the requirements of the "Technical Specifications for Distributed Power Access to Distribution Networks", and unified access standards , reduce access cost and technical difficulty

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